Mopar1973Man

P2128 HIGH VOLTAGE AT THE THROTTLE VALIDATION SWITCH When Monitored and Set Condition: When Monitored: Key on. Set Condition: Both Idle and Not Idle switches are in the same state simultaneously for a calibrated amount of time. POSSIBLE CAUSES (K565) IDLE SWITCH CIRCUIT SHORTED TO (K922) RETURN CIRCUIT (K556) NOT IDLE SWITCH CIRCUIT SHORTED TO (K922) RETURN CIRCUIT (K565) IDLE SWITCH CIRCUIT SHORTED TO GROUND (K556) NOT IDLE SWITCH CIRCUIT SHORTED TO GROUND (K565) IDLE SWITCH SHORTED TO (K556) NOT IDLE SWITCH (K565) IDLE SWITCH SHORTED TO (K556) NOT IDLE SWITCH INSIDE ECM ECM INTERMITTENT CONDITION (K29) APPS NO.2 SIGNAL CIRCUIT SHORTED TO (K854) APPS NO.2 5-VOLT SUPPLY CIRCUIT (K29) APPS NO.2 SIGNAL CIRCUIT SHORTED TO OTHER CIRCUITS IN THE ECM HARNESS ECM APPS INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures. The diesel engine uses two types of throttle position sensors, depending on transmission configuration. Is the throttle position sensor is located on the engine? Yes --> Go To 2 No --> Go To 9 Turn the ignition off. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Measure the voltage between the (K565) idle switch circuit of the APPS harness connector and (K922) return circuit. Is the voltage between 4.5 and 5.5 volts? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 3 Measure the voltage between the (K556) not idle switch circuit of the APPS harness connector and (K922) return circuit. Is the voltage between 4.5 and 5.5 volts? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 4 Turn the ignition off. Disconnect the ECM harness connectors. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (K565) idle switch circuit of the APPS harness connector and battery negative. Is the resistance greater than 100 K Ohms? Yes --> Go To 5 No --> Repair the (K565) Idle switch circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K556) not idle switch circuit of the APPS harness connector and battery negative. Is the resistance greater than 100 K Ohms? Yes --> Go To 6 No --> Repair the (K556) not Idle switch circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K65) idle switch circuit of the APPS harness connector and the (K556) not idle switch circuit of the APPS harness connector. Is the resistance less than 10 Ohms? Yes --> Repair the (K565) idle switch circuit shorted to the not (K556) not idle switch circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 7 Reconnect the ECM harness connectors. Measure the resistance between the (K565) idle switch circuit of the APPS harness connector and the (K556) not idle switch circuit of the APPS harness connector. Is the resistance less than 10 Ohms? Yes --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 8 Ignition on, engine not running. Measure the voltage between the (K565) idle switch circuit of the APPS harness connector and battery negative. Is the voltage between 4.5 and 5.5 volts? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (K29) APPS No. 2 signal circuit in the sensor harness connector and the (K854) APPS No. 2 5-volt supply circuit in the sensor harness connector. Is the resistance greater than 100 K ohms? Yes --> Go To 10 No --> Repair the (K29) APPS No. 2 signal circuit shorted to (K854) APPS No. 2 5-volt supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the APPS No. 2 signal circuit at the ECM harness connector and all other circuit in the ECM harness connector. Is the resistance greater than 100 K ohms? Yes --> Go To 11 No --> Repair the (K29) APPS No. 2 Signal circuit shorted to other circuits in the ECM harness connector. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connector. Reconnect the APPS harness connector. Ignition on, engine not running. While monitoring the DRBIII®, disconnect the APPS harness connector. Did DTC P2122 and P2127 set? Yes --> Go To 12 No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the APPS harness connector. Monitor the APPS No. 1 and APPS No. 2 voltage with the DRBIII® while depressing the throttle pedal. Is the voltage transition shown on the DRBIII® smooth while depressing the throttle Yes --> Test Complete. No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P2127 LOW VOLTAGE AT THE THROTTLE VALIDATION SWITCH When Monitored and Set Condition: When Monitored: Key on. NOTE: This DTC will remain active until the accelerator pedal is cycled. Be sure to cycle the accelerator pedal after completing any repairs to this circuit and prior to checking DTC status with the. DRBIII® Set Condition: Both Idle and Not Idle switches are in the same state simultaneously for a calibrated amount of time. POSSIBLE CAUSES APPS IDLE SWITCH APPS NOT IDLE SWITCH IDLE SWITCH CIRCUIT OPEN NOT IDLE SWITCH CIRCUIT OPEN APPS RETURN CIRCUIT OPEN IDLE SWITCH CIRCUIT SHORTED TO VOLTAGE NOT IDLE SWITCH CIRCUIT SHORTED TO VOLTAGE ECM APPS 2 SIGNAL CIRCUIT OPEN INTERMITTENT CONDITION 5-VOLT SUPPLY CIRCUIT OPEN APPS 2 SIGNAL CIRCUIT SHORTED TO GROUND APPS 2 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND APPS 2 SIGNAL CIRCUIT SHORTED APPS 2 5-VOLT SUPPLY CIRCUIT SHORTED APPS ECM INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures. The diesel engine uses two types of throttle position sensors, depending on transmission configuration. Is the throttle position sensor is located on the engine? Yes --> Go To 2 No --> Go To 10 Turn the ignition off. Disconnect the APPS harness connector. Turn the ignition on. NOTE: Check connectors - Clean/repair as necessary. Measure the voltage between the idle switch circuit of the APPS harness connector and sensor #1 return circuit. Is the voltage between 4.5 and 5.5 volts? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 3 Measure the voltage between the not idle switch circuit of the APPS harness connector and sensor #1 return circuit. Is the voltage between 4.5 and 5.5 volts? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 4 Turn the ignition off. Disconnect the ECM harness connector(s). NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the idle switch circuit between the APPS harness connector and the ECM harness connector. Is the resistance less than 10 Ohms? Yes --> Go To 5 No --> Repair the open idle switch circuit from the ECM harness connector to the APPS harness connector. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the not idle switch circuit between the APPS harness connector and the ECM harness connector. Is the resistance less than 10 Ohms? Yes --> Go To 6 No --> Repair the open not idle switch circuit from the ECM harness connector to the APPS harness connector. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the APPS #1 return circuit between the APPS harness connector and the ECM harness connector. Is the resistance less than 10 Ohms? Yes --> Go To 7 No --> Repair the open APPS return circuit from the ECM harness connector to the APPS harness connector. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the voltage between the idle switch circuit of the APPS connector and battery negative. Is the voltage less than 1 volt? Yes --> Go To 8 No --> Repair the shorted to voltage idle switch circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the voltage between the not idle switch circuit of the APPS connector and battery negative. Is the voltage less than 1 volt? Yes --> Go To 9 No --> Repair the shorted to voltage not idle switch circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connector. Measure the voltage between the idle switch circuit of the APPS connector and APPS return circuit. Is the voltage between 4.5 and 5.5 volts? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the APPS 2 signal circuit between the APPS harness connector and the ECM harness connector Is the resistance less than 10 ohms? Yes --> Go To 11 No --> Repair or replace the engine harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the APPS 2 5-volt supply circuit between the APPS harness connector and the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Go To 12 No --> Repair the open 5-volt supply circuit or replace the wiring harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the APPS 2 signal circuit between the APPS harness connector and battery negative. Is the resistance less than 100 ohms? Yes --> Go To 13 No --> Repair or replace the engine harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the APPS 2 5-volt supply circuit between the APPS harness connector and battery negative. Is the resistance less than 100 ohms? Yes --> Go To 14 No --> Repair or replace the engine harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the APPS 2 signal circuit between the APPS harness connector and all other circuits in the ECM harness connector. Is the resistance less than 100 ohms? Yes --> Go To 15 No --> Repair or replace the engine harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the APPS 2 5-volt supply circuit between the APPS harness connector and all other circuits in the ECM harness connector. Is the resistance less than 100 ohms? Yes --> Go To 16 No --> Repair or replace the engine harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connectors. Ignition on, engine not running. While monitoring with the DRBIII®, connect a jumper wire between the APPS 2 signal circuit at the sensor harness connector and the APPS 2 5-volt supply circuit at the sensor harness connector. NOTE: With the sensor disconnected it is normal to have a APPS 1 and APPS 2 low voltage DTC set. Did a APPS 2 voltage too high DTC set? Yes --> Go To 17 No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Reconnect the APPS harness connector. Ignition on, engine not running. Monitor the APPS 1 and APPS 2 voltage with the DRBIII® while depressing the throttle pedal. Is the voltage transition shown on the DRBIII® smooth while depressing the throttle Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P2123 HIGH VOLTAGE AT THE APP SENSOR When Monitored and Set Condition: When Monitored: While the key is on and during engine operation. Set Condition: The APPS signal circuit voltage at the ECM goes above 4.24 volts for more than 2 seconds. POSSIBLE CAUSES APPS (K922) RETURN CIRCUIT OPEN (K22) SIGNAL CIRCUIT SHORTED TO (K851) 5-VOLT SUPPLY (K22) SIGNAL CIRCUIT SHORTED TO VOLTAGE ECM INTERMITTENT CONDITION (K167) APPS NO. 1 RETURN CIRCUIT OPEN (K23) APPS NO. 1 SIGNAL CIRCUIT SHORTED TO (K852) APPS NO. 1 5-VOLT SUPPLY (K23) APPS SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures. The diesel engine uses two types of throttle position sensors, depending on transmission configuration. Is the throttle position sensor is located on the engine? Yes --> Go To 2 No --> Go To 9 Turn the ignition off. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (K22) signal circuit of the sensor to the (K851) 5-volt supply circuit of the sensor. Is the resistance between 1500 - 3000 Ohms with the accelerator pedal released? Yes --> Go To 3 No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K22) signal circuit of the sensor to the (K851) 5-volt supply circuit of the sensor. NOTE: Released resistance must be at least 1000 Ohms greater than depressed resistance. Is the resistance between 200 - 1500 Ohms with the accelerator pedal depressed? Yes --> Go To 4 No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the APPS harness connector. Ignition on, engine not running. Using the DRBIII®, monitor the DTC while disconnecting the APPS harness connector Did P2122 set? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 5 Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the APPS (K922) return circuit between the sensor harness connector and the ECM harness connector. Is the resistance less than 10 Ohms? Yes --> Go To 6 No --> Repair the open (K922) return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K22) signal circuit in the sensor harness connector and the (K851) 5- volt supply circuit in the sensor harness connector. Is the resistance less than 10 Ohms? Yes --> Repair the (K22) signal circuit shorted to (K851) 5-volt supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 7 Measure the voltage between the (K22) signal circuit in the sensor harness connector and battery negative. Is the voltage greater than 1 volt? Yes --> Repair the (K22) signal circuit shorted to voltage. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 8 Reconnect the ECM harness connectors. Reconnect the disconnected APPS harness connector. Monitor the DRBIII® while disconnecting the APPS harness connector. Did P2122 set? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Disconnect the APPS harness connector. Disconnect the ECM harness connectors. Measure the resistance on the (K167) APPS No. 1 return circuit between the sensor harness connector and the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Go To 10 No --> Repair the (K167) APPS No. 1 return circuit open. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K23) APPS No. 1 signal circuit in the sensor harness connector and the (K852) APPS No. 1 5-volt supply circuit in the sensor harness connector. Is the resistance greater than 100 K ohms? Yes --> Go To 11 No --> Repair the (K23) APPS No. 1 signal circuit shorted to the (K852) 5-volt supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the APPS No. 1 signal circuit at the ECM harness connector and all other circuits in the ECM harness connector. Is the resistance greater than 100 k ohms? Yes --> Go To 12 No --> Repair the (K23) APPS No. 1 signal circuit shorted to another circuit in the engine harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connectors. Reconnect the APPS harness connector. While monitoring with the DRBIII®, disconnect the sensor connector. Did a APPS No. 1 and APPS No. 2 voltage too low DTC set? Yes --> Go To 13 No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the APPS harness connector. Monitor the APPS No. 1 and APPS No. 2 voltage with the DRBIII® while depressing the throttle pedal. Is the voltage transition shown on the DRBIII® smooth while depressing the throttle? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P2122 LOW VOLTAGE AT THE APP SENSOR When Monitored and Set Condition: When Monitored: While the key is on and during engine operation. Set Condition: The APPS circuit voltage at the ECM goes below 0.13 volt for more than 2 seconds. POSSIBLE CAUSES APPS (K851) 5-VOLT SUPPLY CIRCUIT OPEN (K22) SIGNAL CIRCUIT OPEN FROM ECM TO APPS (K22) SIGNAL CIRCUIT SHORTED TO (K922) RETURN CIRCUIT (K22) SIGNAL CIRCUIT SHORTED TO GROUND (K22) SIGNAL CIRCUIT SHORTED TO (K914) SENSOR RETURN (K851) 5-VOLT SUPPLY CIRCUIT SHORTED TO (K922) RETURN CIRCUIT (K851) 5-VOLT SUPPLY CIRCUIT SHORTED TO (K914) SENSOR RETURN (K851) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND (K22) SIGNAL CIRCUIT SHORTED TO (K565) IDLE CIRCUIT (K22) SIGNAL CIRCUIT SHORTED TO (K556) NOT IDLE CIRCUIT ECM INTERMITTENT CONDITION (K23) APPS NO. 1 SIGNAL CIRCUIT OPEN (K852) APPS NO. 1 5-VOLT SUPPLY OPEN (K23) APPS NO. 1 SIGNAL CIRCUIT SHORTED TO GROUND (K23) APPS NO. 1 SIGNAL CIRCUIT SHORTED TO OTHER CIRCUITS (K852) APPS NO. 1 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND (K852) APPS NO. 1 5-VOLT SUPPLY CIRCUIT SHORTED TO OTHER CIRCUITS INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE The diesel engine uses two types of throttle position sensors, depending on transmission configuration. Is the throttle position sensor is located on the engine? Yes --> Go To 2 No --> Go To 17 Turn the ignition off. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (K22) signal circuit of the sensor to the (K851) 5-volt supply circuit of the sensor. Is the resistance between 1500 - 3000 Ohms with the accelerator pedal released? Yes --> Go To 3 No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K22) signal circuit of the sensor to the (K851) 5-volt supply circuit of the sensor. NOTE: Released resistance must be at least 1000 Ohms greater than depressed resistance. Is the resistance between 200 - 1500 Ohms with the accelerator pedal depressed? Yes --> Go To 4 No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K851) 5-volt supply circuit of the sensor and the (K922) return circuit of the sensor. Is the resistance between 2000 and 3000 Ohms, depressed as well as released? Yes --> Go To 5 No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Connect a jumper wire between the (K22) signal circuit in the sensor harness connector and the (K851) 5-volt supply circuit in the sensor harness connector. With the DRBIII®, read DTCs. Did P2123 set? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 6 Disconnect the ECM harness connectors. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the (K851) 5-volt supply circuit between the APPS harness connector and the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Go To 7 No --> Repair the open (K851) 5-volt supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the (K22) signal circuit between the APPS harness connector and the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Go To 8 No --> Repair the open (K22) signal circuit from ECM to APPS harness connector. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K22) signal circuit in the sensor harness connector and the (K922) return circuit in the sensor harness connector. Is the resistance less than 10 ohms? Yes --> Repair the (K22) signal circuit shorted to the (K922) return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 9 Measure the resistance between the (K22) signal circuit in the sensor harness connector and battery negative. Is the resistance less than 10 ohms? Yes --> Repair the (K22) signal circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 10 Measure the resistance between the (K22) signal circuit in the sensor harness connector and the (K914) sensor return circuit of the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Repair the (K22) signal circuit shorted to the (K914) sensor return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 11 Measure the resistance between the (K851) 5-volt supply circuit in the sensor harness connector and the (K922) return circuit in the sensor harness connector. Is the resistance less than 10 ohms? Yes --> Repair the (K851) 5-volt supply circuit shorted to the (K922) return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 12 Measure the resistance between the (K851) 5-volt supply circuit in the sensor harness connector and battery negative. Is the resistance less than 10 ohms? |Yes --> Repair the (K851) 5-volt supply circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 13 Measure the resistance between the (K851) 5-volt supply circuit in the sensor harness connector and the (K914) sensor return circuit of the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Repair the (K851) 5-volt supply circuit shorted to the (K914) sensor return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 14 Measure the resistance between the (K22) signal circuit in the sensor harness connector and the (K565) idle switch circuit in the sensor harness connector. Is the resistance less than 10 ohms? Yes --> Repair the (K22) signal circuit shorted to the (K565) idle circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 15 Measure the resistance between the (K22) signal circuit in the sensor harness connector and the (K556) not idle switch circuit in the sensor harness connector. Is the resistance less than 10 ohms? Yes --> Repair the (K22) signal circuit shorted to the (K556) not idle circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 16 Reconnect the ECM harness connectors. Ignition on, engine not running. Connect a jumper wire between the (K22) signal circuit in the sensor harness connector and the (K851) 5-volt supply circuit in the sensor harness connector. Did DTC P2123 set? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the (K23) APPS No. 1 signal circuit between the APPS sensor harness connector and the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Go To 18 No --> Repair the (K23) APPS No. 1 signal circuit open. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the (K852) APPS No. 1 5-volt supply circuit between the APPS sensor harness connector and the ECM harness connector. Is the resistance less than 10 ohms? Yes --> Go To 19 No --> Repair the (K852) APPS No. 1 5-volt supply open. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K23) APPS No. 1 signal circuit at the sensor harness connector and battery negative. Is the resistance greater than 100 k ohms? Yes --> Go To 20 No --> Repair the (K23) APPS No. 1 signal circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K23) APPS No. 1 signal circuit at the sensor harness connector and all other circuits in the ECM harness connector. Is the resistance greater than 100 k ohms? Yes --> Go To 21 No --> Repair the (K23) APPS No. 1 signal circuit shorted to other circuits. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K852) APPS No. 1 5-volt supply circuit at the sensor harness connector and battery negative. Is the resistance greater than 100 k ohms? Yes --> Go To 22 No --> Repair the (K852) APPS No. 1 5-volt supply circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K852) APPS No. 1 5-volt supply circuit at the sensor harness connector and all other circuits in the ECM harness connector. Is the resistance greater than 100 k ohms? Yes --> Go To 23 No --> Repair the (K852) APPS No. 1 5-volt supply circuit shorted to other circuits. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connectors. Turn the ignition on. While monitoring with the DRBIII®, connect a jumper wire between the (K23) APPS No. 1 signal circuit at the sensor harness connector and the (K852) APPS No. 1 5-volt supply circuit at the sensor harness connector. NOTE: With the sensor disconnected it is normal to have a APPS 1 and APPS 2 low voltage DTC set. Did DTC P2123 set? Yes --> Go To 24 No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the APPS harness connector. Monitor the APPS 1 and APPS 2 voltage with the DRBIII® while depressing the throttle pedal. Is the voltage transition shown on the DRBIII® smooth while depressing the throttle and is the volta Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P1652 J1850 SHORT TO GROUND When Monitored and Set Condition: When Monitored: While the ignition is on. Set Condition: The ECM detects a short to ground on the J1850. POSSIBLE CAUSES ECM (D25) J1850 SHORTED COMMUNICATION DIAGNOSTIC PROCEDURE Turn the ignition off. Disconnect the ECM harness connectors. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (D25) J1850 circuit in the ECM harness connector and battery negative. Is the resistance less than 10 Ohms? Yes --> Go To 2 No --> Replace the ECM. Measure the resistance between the (D25) J1850 circuit and all other circuits in both ECM connectors. Is the resistance greater than 100k ohms? Yes --> Refer to the Body Diagnostic under Communications. No --> Repair (D25) J1850 shorted to another circuit.

P0839 4WD MODE SENSOR HIGH When Monitored and Set Condition: When Monitored: Continuously with the ignition key on. Set Condition: When the 4WD Mode Sensor input circuit voltage raises above 4.78 volts for 5.72 seconds. POSSIBLE CAUSES TRANSFER CASE POSITION SENSOR INPUT CIRCUIT OPEN TRANSFER CASE POSITION SENSOR INPUT CIRCUIT SHORT TO VOLTAGE TRANSFER CASE POSITION SENSOR POWERTRAIN/ENGINE CONTROL MODULE INTERMITTENT OPERATION DIAGNOSTIC PROCEDURE With the DRBIII(R), record and erase DTC's. Start the engine and cycle the Transfer Case through all positions. With the DRBIII(R), read Transfer Case DTCs. Is the Good Trip Counter equal to zero? Yes --> Go To 2 No --> Go To 6 Turn the ignition off to the lock position. Disconnect the Powertrain/Engine Control Module harness connectors. CAUTION: IF EQUIPPED WITH NGC CONTROLLER, DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Disconnect the Transfer Case Position Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the Transfer Case Position Sensor Input circuit. Is the resistance above 5.0 ohms? Yes --> Repair the Transfer Case Position Sensor input circuit for an open. No --> Go To 3 Turn the ignition on. Measure the voltage of the Transfer Case Position Sensor Input circuit. Is there any voltage present? Yes --> Repair the Transfer Case Position Sensor input circuit for a short to voltage. No --> Go To 4 Turn the ignition off to the lock position. Measure the resistance between the Transfer Case Position Sensor Input circuit and the Sensor Return circuit in the PCM/ECM harness connector. Is the resistance between 55 ohms and 1.3k ohms? Yes --> Go To 5 No --> Replace the Transfer Case Position Sensor. If there are no possible causes remaining, view repair. Repair Replace and program the Powertrain/Engine Control Module. Refer to ELECTRONIC CONTROL MODULES . Perform the appropriate Powertrain verification test. The conditions to set this DTC are not present at this time. NOTE: Use the Freeze Frame Data to help duplicate the conditions that set the DTC. Pay particular attention to the DTC set conditions, such as, VSS, MAP, ECT, and Load. NOTE: Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. NOTE: Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. NOTE: Refer to any technical service bulletins that may apply. Were there any problems found? Yes --> Repair as necessary. No --> Test Complete.

P0838 4WD MODE SENSOR LOW When Monitored and Set Condition: When Monitored: Continuously with the ignition key on. Set Condition: When the 4WD Mode Sensor input circuit voltage falls below 0.3 volts for 5.72 seconds. POSSIBLE CAUSES TRANSFER CASE POSITION SENSOR INPUT CIRCUIT SHORT TO GROUND TRANSFER CASE POSITION SENSOR INPUT CIRCUIT SHORT TO SENSOR RETURN CIRCUIT TRANSFER CASE POSITION SENSOR POWERTRAIN/ENGINE CONTROL MODULE INTERMITTENT OPERATION DIAGNOSTIC PROCEDURE With the DRBIII(R), record and erase DTC's. Start the engine and cycle the Transfer Case through all positions. With the DRBIII(R), read Transfer Case DTCs. Is the Good Trip Counter equal to zero? Yes --> Go To 2 No --> Go To 6 Turn the ignition off to the lock position. Disconnect the Powertrain Control Module harness connector. CAUTION: IF EQUIPPED WITH NGC CONTROLLER, DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WELL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Disconnect the Transfer Case Position Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between ground and the Transfer Case Position Sensor Input circuit. Is the resistance below 5.0 ohms? Yes --> Repair the Transfer Case Position Sensor input circuit for a short to ground. No --> Go To 3 Measure the resistance between the Transfer Case Position Sensor Input circuit and the Sensor Return circuit in the PCM/ECM harness connector. Is the resistance above 1000.0 ohms? Yes --> Go To 4 No --> Repair the Transfer Case Position Sensor Input circuit for a short to the Sensor Return circuit. Measure the resistance between the Transfer Case Position Sensor Input circuit and the Sensor Return circuit in the PCM/ECM harness connector. Is the resistance between 55 ohms and 1.3k ohms? Yes --> Go To 5 No --> Replace the Transfer Case Position Sensor. If there are no possible causes remaining, view repair. Repair Replace and program the Powertrain/Engine Control Module. Refer to ELECTRONIC CONTROL MODULES . Perform the appropriate Powertrain verification test. The conditions to set this DTC are not present at this time. NOTE: Use the Freeze Frame Data to help duplicate the conditions that set the DTC. Pay particular attention to the DTC set conditions, such as, VSS, MAP, ECT, and Load. NOTE: Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. NOTE: Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. NOTE: Refer to any technical service bulletins that may apply. Were there any problems found? Yes --> Repair as necessary. No --> Test Complete.

P0837 4WD MUX SWITCH PERFORMANCE When Monitored and Set Condition: When Monitored: Continuously with the ignition on. Set Condition: The 4WD muxed switch input detected in an invalid range or irrational switch state. POSSIBLE CAUSES RELATED DTCS PRESENT TRANSFER CASE SHIFTER OUT OF ADJUSTMENT TRANSFER CASE POSITION SENSOR OUT OF TOLERANCE POWERTRAIN/ENGINE CONTROL MODULE DIAGNOSTIC PROCEDURE With the DRBIII(R), read DTCs. Are any other Transfer Case DTCs present? Yes --> Repair all other Transfer Case DTCs before proceeding. No --> Go To 2 Verify proper Transfer Case Shifter adjustment. Refer to appropriate TRANSFER CASE article. Is the Transfer Case Shifter adjusted correctly? Yes --> Go To 3 No --> Adjust the Transfer Case shifter linkage. Turn the ignition off to the lock position. Disconnect the PCM/ECM harness connector(s). CAUTION: IF EQUIPPED WITH NGC CONTROLLER, DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WELL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance across the Transfer Case Position Sensor signal circuit and Sensor Ground circuit at the PCM/ECM harness connector. Place the transfer case in each of the following positions: 2H - resistance should be between 1124 and 1243 ohms. 4H - resistance should be between 650 and 719 ohms. N - resistance should be between 389 and 431 ohms. 4L - resistance should be between 199 and 221 ohms. Were all resistance values in each transfer case position within the specified range? Yes --> Go To 4 No --> Replace the Transfer Case Position Sensor. If there are no possible causes remaining, view repair. Repair Replace and program the Powertrain/Engine Control Module. Refer to ELECTRONIC CONTROL MODULES . Perform the appropriate Powertrain verification test.

P0836 4WD MUX SWITCH STUCK When Monitored and Set Condition: When Monitored: When Transfer Case in 4WD Low. Set Condition: Four wheel drive (4WD) muxed switch input detected below minimum or above maximum acceptable voltage. POSSIBLE CAUSES TRANSFER CASE POSITION SENSOR INPUT CIRCUIT OPEN TRANSFER CASE POSITION SENSOR INPUT CIRCUIT SHORT TO GROUND TRANSFER CASE POSITION SENSOR INPUT CIRCUIT SHORT TO VOLTAGE TRANSFER CASE POSITION SENSOR INPUT CIRCUIT SHORT TO SENSOR RETURN CIRCUIT TRANSFER CASE POSITION SENSOR POWERTRAIN/ENGINE CONTROL MODULE INTERMITTENT OPERATION DIAGNOSTIC PROCEDURE With the DRBIII(R), record and erase DTC's. Start the engine and cycle the Transfer Case through all positions. With the DRBIII(R), read Transfer Case DTCs. Is the Good Trip Counter equal to zero? Yes --> Go To 2 No --> Go To 8 Turn the ignition off to the lock position. Disconnect the Powertrain Control Module harness connector. CAUTION: IF EQUIPPED WITH NGC CONTROLLER, DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WELL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Disconnect the Transfer Case Position Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the Transfer Case Position Sensor Input circuit. Is the resistance above 5.0 ohms? Yes --> Repair the Transfer Case Position Sensor input circuit for an open. No --> Go To 3 Measure the resistance between ground and the Transfer Case Position Sensor Input circuit. Is the resistance below 5.0 ohms? Yes --> Repair the Transfer Case Position Sensor input circuit for a short to ground. No --> Go To 4 Turn the ignition on. Measure the voltage of the Transfer Case Position Sensor Input circuit. Is there any voltage present? Yes --> Repair the Transfer Case Position Sensor input circuit for a short to voltage. No --> Go To 5. Turn the ignition off to the lock position. Measure the resistance between the Transfer Case Position Sensor Input circuit and the Sensor Return circuit in the PCM harness connector. Is the resistance above 1000.0 ohms? Yes --> Go To 6 No --> Repair the Transfer Case Position Sensor Input circuit for a short to the Sensor Return circuit. Measure the resistance between the Transfer Case Position Sensor Input circuit and the Sensor Return circuit in the PCM harness connector. Is the resistance between 55 ohms and 1.3k ohms? Yes --> Go To 7 No --> Replace the Transfer Case Position Sensor. If there are no possible causes remaining, view repair. Repair Replace and program the Powertrain/Engine Control Module. Refer to ELECTRONIC CONTROL MODULES . Perform the appropriate Powertrain verification test. The conditions to set this DTC are not present at this time. NOTE: Use the Freeze Frame Data to help duplicate the conditions that set the DTC. Pay particular attention to the DTC set conditions, such as, VSS, MAP, ECT, and Load. NOTE: Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. NOTE: Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. NOTE: Refer to any technical service bulletins that may apply. Were there any problems found? Yes --> Repair as necessary. No --> Test Complete.

P0733 GEAR RATIO ERROR IN 3RD When Monitored and Set Condition: When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL. POSSIBLE CAUSES RELATED DTC'S PRESENT RELATED PRESSURE SWITCH DTC'S PRESENT INTERNAL TRANSMISSION TRANSMISSION SOLENOID/TRS ASSEMBLY INTERMITTENT GEAR RATIO ERRORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), check for other transmission DTCs If any of these DTCs are present, perform their respective tests first. Are the DTCs P0944, P0715, P0720, P1794, P0867, P0932, P0868, or P0869 present also? Yes --> Refer to the Transmission Category and perform the appropriate symptom. If any of these DTCs are present, they will cause a Speed Ratio Error. Perform the test for P0944 first if it is present. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 3 With the DRBIII(R), check for other transmission DTCs Are the DTCs P0870 OD Hydraulic Pressure Switch and/or P0871 OD Pressure Switch present also? Yes --> Replace the Transmission Solenoid/TRS Assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 4 With the DRBIII(R), perform the 3rd Gear Clutch Test. Follow the instructions on the DRBIII(R). Increase the throttle angle, TPS Degree, to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did the clutch test pass, Input speed remain at zero? Yes --> Go To 5 No --> Go To 6 The conditions to set this DTC are not currently present. Check the gearshift linkage adjustment. Intermittent gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits and/or Speed Sensor Ground circuit. Remove the Starter Relay. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool #8333. Wiggle wiring and connectors while checking for intermittent operation with the Transmission Simulator. Gear ratio DTCs can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found. Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete. Repair the transmission as necessary. If there were any line pressure DTC's also present, make sure to inspect the Transmission Oil Pump and Pressure Control Solenoid. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: If DTC's P0871 and/or P0870 are also present, replace the Transmission Solenoid/TRS Assembly in addition to necessary internal repairs. If there are no possible causes remaining, view repair. Repair Repair internal transmission. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 :

P0732 GEAR RATIO ERROR IN 2ND When Monitored and Set Condition: When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL. POSSIBLE CAUSES RELATED DTC'S PRESENT CHECK 2C AND UD CLUTCH EXTRA #7 CHECK BALL IN POCKET OR PASSAGE INTERNAL TRANSMISSION TRANSMISSION SOLENOID/TRS ASSEMBLY INTERMITTENT GEAR RATIO ERRORS TEST DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), check Transmission DTCs Are there any Loss of Prime, Speed Sensor, and/or Line Pressure DTCs present? Yes --> Refer to the Transmission Category and perform the appropriate symptom. If any of these DTCs are present, they may cause a Speed Ratio Error. Perform the test procedure for P0944-LOSS OF PRIME first if it is present. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 3 With the DRBIII(R), check Transmission DTCs Is the DTC P0845 and/or P0846 also present? Yes --> Replace the Transmission Solenoid/TRS Assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 4 With the DRBIII(R), record the EATX DTC EVENT DATA for P0732. Does the EATX DTC EVENT DATA show a Input speed of 0? Yes --> Go To 5 No --> Go To 6 The conditions to set this DTC are not currently present. Check the gearshift linkage adjustment. Intermittent gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits and/or Speed Sensor Ground circuit. Remove the Starter Relay. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool # 8333. Wiggle wiring and connectors while checking for intermittent operation with the Transmission Simulator. Gear ratio DTCs can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete. Remove the Valve Body and air check the 2C and UD clutches. Refer to appropriate AUTOMATIC TRANSMISSION article. Do the 2C and UD clutches pass the air test? Yes --> Go To 7 No --> Repair internal transmission. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Check the #7 Check Ball pocket and passage for an extra check ball. Is there an extra check ball in the #7 Check Ball pocket or passage? Yes --> Remove extra #7 Check Ball. Make sure the check ball to be used is not cut or damaged and repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 8 Repair internal transmission as necessary. Refer to the appropriate OVERHAUL article. If there are no possible causes remaining, view repair. Repair Repair internal transmission. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1

P0731 GEAR RATIO ERROR IN 1ST When Monitored and Set Condition: When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL. POSSIBLE CAUSES RELATED DTC'S PRESENT INTERNAL TRANSMISSION INTERMITTENT GEAR RATIO ERRORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), check for other transmission DTCs If any of these DTCs are present, perform their respective tests first. Are DTCs P0944, P0715, P0720, P1794, P0867, P0932, P0868, or P0869 present also? Yes --> Refer to the Transmission Category and perform the appropriate symptom. If any of these DTCs are present, they may cause a Speed Ratio Error. Perform the test for P0944 first if it is present. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 3 With the DRBIII(R), perform the 1st Gear Clutch Test. Follow the instructions on the DRBIII(R). Increase the throttle angle or TPS Degree to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did the Clutch Test pass, Input Speed remain at zero? Yes --> Go To 4 No --> Go To 5 The conditions to set this DTC are not currently present. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. If the DTC Event Data shows fault P0731 was set in the Park, Reverse, or Neutral, replace the Powertrain Control Module. If the DTC Event Data shows fault P0731 set with input RPM = zero, check input speed sensor and related wiring. If the DTC Event Data shows fault P0731 set with line pressure significantly below Desired Line Pressure, check for cause of low line pressure (i.e., oil level, misinstalled or damages filter or filter seal, sticking main regulator valve in pump, etc.). If the DTC Event Data shows fault P0731 set with UD pressure switch open (but line pressure matches Desired Line Pressure), air check the UD clutch passage for leakage and if OK, replace the solenoid assembly.Check the gearshift linkage adjustment. Intermittent Gear Ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits and/or Speed Sensor Ground circuit. Remove the Starter Relay from the PDC. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool # 8333. Wiggle wiring and connectors while checking for intermittent operation with the Transmission Simulator. Gear ratio DTCs can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. Were there any problems found. Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete. Repair internal transmission as necessary. Refer to the appropriate OVERHAUL article. If there were any line pressure DTC's present along with this DTC, make sure to inspect the Transmission Oil Pump and Pressure Control Solenoid. If DTC's P0876 and/or P0875 were present in addition to the P0731, replace the Transmission Solenoid/TRS Assembly in addition to necessary internal repairs. Pay particular attention to the following list of possible causes when repairing the transmission condition. Cut UD piston seal Failed overrunning clutch Faulty solenoid module Cut UD accumulator seal ring Broken UD accumulator piston Broken reaction shaft support seal ring Low line pressure Broken/missing main valve body bleed orifice Broke/missing dribbles orifice assy in reaction shafts support If there are no possible causes remaining, view repair. Repair Repair internal transmission. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .

P0725 ENGINE SPEED SENSOR CIRCUIT When Monitored and Set Condition: When Monitored: Continuously with engine running. Set Condition: This code is set when the engine speed sensed by the Transmission is less than 400 RPM and the engine is running (As reported by the PCM over the communication bus) for 2 seconds. This DTC can take up to five minutes of problem identification before illuminating the MIL. POSSIBLE CAUSES RELATED ENGINE DTC'S PRESENT POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms.NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 NOTE: This is not a Transmission Input Speed Sensor DTC. NOTE: This counter only applies to the last DTC set. Start the engine. Allow the engine to idle. With the DRBIII(R), check the STARTS SINCE SET counter for P0725. Is the STARTS SINCE SET counter for P0725 set at 0? No --> Go To 3 Yes --> Go To 4 The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorts and open circuits. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete. Ignition on, engine not running. With the DRBIII(R), read Engine DTC's. Are there any Engine DTCs present? Yes --> Refer to the Powertrain category and perform the appropriate symptom. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 5 Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .

P0720 OUTPUT SPEED SENSOR ERROR When Monitored and Set Condition: When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear. Set Condition: If there is an excessive change in output RPM in any gear. This DTC can take up to five minutes of problem identification before illuminating the MIL. POSSIBLE CAUSES OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN SPEED SENSOR GROUND CIRCUIT OPEN OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND SPEED SENSOR GROUND CIRCUIT SHORT TO GROUND OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE OUTPUT SPEED SENSOR POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 Turn the ignition off to the lock position. CAUTION: Properly support the vehicle and raise all drive wheels off the ground. Start the engine in park. Place the transmission gear selector in drive, release foot from brake. WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING WHEELS. With the DRBIII(R), monitor the Output Speed Sensor RPM. Is the Output Speed Sensor RPM below 100 RPM? Yes --> Go To 3 No --> Go To 12 Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. Install the Transmission Simulator, Miller tool #8333. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running.With the Transmission Simulator, set the selector switch to 3000/1000 and the Input/Output switch to ON. With the DRBIII(R), monitor the Input and Output Speed Sensor RPM Does the Input Speed read 3000 RPM and the Output Speed read 1000 RPM, +/- 50 RPM? Yes --> Go To 4 No --> Go To 5 If there are no possible causes remaining, view repair. Repair Replace the Output Speed Sensor. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Output Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the Output Speed Sensor Signal circuit from the Output Speed Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance above 5.0 ohms? Yes --> Repair the Output Speed Sensor Signal circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 6 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Output Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the Output Speed Sensor Signal circuit. Is the resistance Below 5.0 ohms? Yes --> Repair the Output Speed Sensor Signal circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 7 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WELL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. NOTE: Check connectors - Clean/repair as necessary. Place a jumper wire between the Fused B+ circuit and the Transmission Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the Output Speed Sensor Signal circuit. Is the voltage above 0.5 volts? Yes --> Repair the Output Speed Sensor Signal circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 8 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Output Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WELL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the Speed Sensor Ground circuit from the Output Speed Sensor harness connector to the appropriate terminal in the special tool #8815. Is the resistance above 5.0 ohms? Yes --> Repair the Speed Sensor Ground circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 9 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Output Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the Speed Sensor Ground circuit. Is the resistance below 5.0 ohms? Yes --> Repair the Speed Sensor Ground circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 10 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay from the PDC. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Place a jumper wire between the Fused B+ circuit and Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the Speed Sensor Ground circuit. Is the voltage above 0.5 volts? Yes --> Repair the Speed Sensor Ground circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 11 Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete.

P0715 INPUT SPEED SENSOR ERROR When Monitored and Set Condition: When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear. Set Condition: If there is an excessive change in input RPM in any gear. This DTC can take up to five minutes of problem identification before illuminating the MIL. POSSIBLE CAUSES INPUT SPEED SENSOR SIGNAL CIRCUIT OPEN SPEED SENSOR GROUND CIRCUIT OPEN INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND SPEED SENSOR GROUND CIRCUIT SHORT TO GROUND INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE INPUT SPEED SENSOR POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 Start the engine in park. With the DRBIII(R), observe the Input Speed Sensor Reading. Is the Input Speed Sensor Reading below 400 RPM? Yes --> Go To 3 No --> Go To 12 Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. Install the Transmission Simulator, Miller tool #8333. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. With the Transmission Simulator, set the selector switch to 3000/1000 and the Input/Output switch to ON. With the DRBIII(R), monitor the Input and Output Speed Sensor RPM. Does the Input speed read 3000 RPM and the Output speed read 1000 RPM +/- 50 RPM? Yes --> Go To 4 No --> Go To 5 If there are no possible causes remaining, view repair. Repair Replace the Input Speed Sensor. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Turn ignition switch to the lock position Disconnect the PCM C4 harness connector. Disconnect the Input Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the Input Speed Sensor Signal circuit from the appropriate terminal of special tool #8815 to the Input Speed Sensor harness connector. Is the resistance above 5.0 ohms? Yes --> Repair the Input Speed Sensor Signal circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 6 Tarn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Input Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the Input Speed Sensor Signal circuit. Is the resistance Below 5.0 ohms? Yes --> Repair the Input Speed Sensor Signal circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 7 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Place a jumper wire between the Fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the Input Speed Sensor Signal circuit. Is the voltage above 0.5 volts? Yes --> Repair the Input Speed Sensor Signal circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 8 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Input Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the Speed Sensor Ground circuit from the appropriate terminal of special tool #8815 to the Input Speed Sensor harness connector. Is the resistance above 5.0 ohms? Yes --> Repair the Speed Sensor Ground circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 9 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Input Speed Sensor harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the Speed Sensor Ground circuit. Is the resistance Below 5.0 ohms? Yes --> Repair the Speed Sensor Ground circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 10 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Place a jumper wire between the fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the Speed Sensor Ground circuit. Is the voltage above 0.5 volts? Yes --> Repair Speed Sensor Ground circuit short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 11 Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete

P0714 TRANSMISSION TEMPERATURE SENSOR INTERMITTENT When Monitored and Set Condition: When Monitored: Continuously with the ignition on and engine running. Set Condition: The DTC will set when the monitored Temperature Sensor voltage fluctuates or changes abruptly within a predetermined period of time. POSSIBLE CAUSES RELATED DTC'S PRESENT TRANSMISSION TEMPERATURE SENSOR POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), check Transmission DTCs. Are there any Speed Sensor and/or other Temperature Sensor DTCs present? Yes --> Refer to the Transmission Category and perform the appropriate symptom. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 3 With the DRBIII(R), Check the STARTS SINCE SET counter for P0714. NOTE: This counter only applies to the last DTC set. Is the STARTS SINCE SET counter 2 or less? Yes --> Go To 4 No --> Go To 7 Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. Install the Transmission Simulator, Miller tool #8333. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. With the Transmission Simulator, turn the Input/Output switch to OFF. With the DRBIII(R), monitor the TRANS TEMP VOLTS while turning the Thermistor Voltage switch to all three positions on the Transmission Simulator. Compare the DRBIII(R) readings with the numbers listed on the Transmission Simulator. Do the readings on the Transmission Simulator match a non-fluctuating DRBIII(R) reading +/- 0.2 volts? Yes --> Go To 5 No --> Go To 6 If there are no possible causes remaining, view repair. Repair Replace Transmission Solenoid/TRS assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes -->+ Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete.

P0713 TRANSMISSION TEMPERATURE SENSOR HIGH When Monitored and Set Condition: When Monitored: Continuously with the ignition on and engine running. Set Condition: The DTC will set when the monitored Temperature Sensor voltage rises above 4.94 volts for the period of 0.45 seconds. POSSIBLE CAUSES RELATED DTC'S PRESENTTRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE TRANSMISSION TEMPERATURE SENSOR POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL .For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), check Transmission DTC's. Are there any Speed Sensor DTCs present? Yes --> Refer to the Transmission Category and perform the appropriate symptom. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 3 With the DRBIII(R), Check the STARTS SINCE SET counter for P0713. NOTE: This counter only applies to the last DTC set. Is the STARTS SINCE SET counter 2 or less? Yes --> Go To 4 No --> Go To 9 Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. Install the Transmission Simulator, Miller tool #8333. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. With the Transmission Simulator, turn the Input/Output switch to OFF. With the DRBIII(R), monitor the TRANS TEMP VOLTS while turning the Thermistor Voltage switch to all three positions on the Transmission Simulator. Compare the DRBIII(R) readings with the numbers listed on the Transmission Simulator. Do the readings on the Transmission Simulator match the DRBIII(R) readings +/- 0.2 volts? Yes --> Go To 5 No --> Go To 6 If there are no possible causes remaining, view repair. Repair Replace Transmission Solenoid/TRS assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Transmission Solenoid /TRS Assembly harness connector NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the Transmission Temperature Sensor Signal circuit from the appropriate terminal of special tool #8815 to the Transmission Solenoid/TRS Assembly harness connector. Is the resistance above 5.0 ohms? Yes --> Repair the Transmission Temperature Sensor Signal circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 7 Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Connect a jumper wire between the Fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the Transmission Temperature Sensor Signal circuit. Is the voltage above 0.5 volts? Yes --> Repair the Transmission Temperature Sensor Signal circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 8 Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete.

P0712 TRANSMISSION TEMPERATURE SENSOR LOW When Monitored and Set Condition: When Monitored: Continuously with the ignition on and engine running. Set Condition: The DTC will set when the monitored Temperature Sensor voltage drops below 0.078 volts for the period of 0.45 seconds. POSSIBLE CAUSES RELATED DTC'S PRESENT TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND TRANSMISSION TEMPERATURE SENSOR POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), check Transmission DTC's. Are there any Speed Sensor DTCs present? Yes --> Refer to the Transmission Category and perform the appropriate symptom. Perform (NGC) 45RFE/545RPE TRANSMISSION VERIFICATION TEST - VER 1. No --> Go To 3 With the DRBIII(R), Check the STARTS SINCE SET counter for P0712. NOTE: This counter only applies to the last DTC set. Is the STARTS SINCE SET counter 2 or less? Yes --> Go To 4 No --> Go To 8 Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. Install the Transmission Simulator, Miller tool #8333. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. With the Transmission Simulator, turn the Input/Output switch to OFF. With the DRBIII(R), monitor the TRANS TEMP VOLTS while turning the Thermistor Voltage switch to all three positions on the Transmission Simulator Compare the DRBIII(R) readings with the numbers listed on the Transmission Simulator. Do the readings on the Transmission Simulator match the DRBIII(R) readings +/- 0.2 volts? Yes --> Go To 5 No --> Go To 6 If there are no possible causes remaining, view repair. Repair Replace Transmission Solenoid/TRS assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Transmission Solenoid/TRS Assembly harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the Transmission Temperature Sensor Signal circuit. Is the resistance below 5.0 ohms? Yes --> Repair the Transmission Temperature Sensor Signal circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 7 Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete.

P0711 TRANSMISSION TEMPERATURE SENSOR PERFORMANCE When Monitored and Set Condition: When Monitored: Continuously with the ignition on and engine running. Set Condition: This DTC will set when the desired transmission temperature does not reach a normal operating temperature within a given time frame. Time is variable due to ambient temperature. Approximate times are starting temperature to warm up time: (-40° F / -40° C - 35 min) (-20° F / -28° C - 25 min) (20° F / -6.6° C - 20 min) (60° F / 15.5 ° C -10 min) POSSIBLE CAUSES RELATED DTC'S PRESENT TRANSMISSION TEMPERATURE SENSOR POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article. NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), check Transmission DTCs. Are there any other Transmission Temperature Sensor related DTCs present? Yes --> Refer to the Transmission Category and perform the appropriate symptom. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 3 With the DRBIII(R), Check the STARTS SINCE SET counter for P0711. NOTE: This counter only applies to the last DTC set. Is the STARTS SINCE SET counter 2 or less? Yes --> Go To 4 No --> Go To 7 Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. Install the Transmission Simulator, Miller tool #8333. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. With the Transmission Simulator, turn the Input/Output switch to OFF. With the DRBIII(R), monitor the TRANS TEMP VOLTS while turning the Thermistor Voltage switch to all three positions on the Transmission Simulator. Compare the DRBIII(R) readings with the numbers listed on the Transmission Simulator. Do the readings on the Transmission Simulator match the DRBIII(R) readings +/- 0.2 volts? Yes --> Go To 5 No --> Go To 6 If there are no possible causes remaining, view repair. Repair Replace Transmission Solenoid/TRS assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete.

P0706 CHECK SHIFTER SIGNAL When Monitored and Set Condition: When Monitored: Continuously with the ignition on. Set Condition: The DTC will set if there are 3 occurrences in one ignition cycle of an invalid PRNDL code which last for more than 0.1 seconds. POSSIBLE CAUSES SHIFTER OUT OF ADJUSTMENT, TRS T1 SENSE CIRCUIT OPEN TRS T2 SENSE CIRCUIT OPEN TRS T3 SENSE CIRCUIT OPEN TRS T41 SENSE - P/N SENSE CIRCUIT OPEN TRS T42 SENSE CIRCUIT OPEN TRS T1 SENSE CIRCUIT SHORT TO GROUND TRS T2 SENSE CIRCUIT SHORT TO GROUND TRS T3 SENSE CIRCUIT SHORT TO GROUND TRS T41 SENSE - P/N SENSE CIRCUIT SHORT TO GROUND TRS T42 SENSE CIRCUIT SHORT TO GROUND TRS T1 SENSE CIRCUIT SHORT TO VOLTAGE TRS T2 SENSE CIRCUIT SHORT TO VOLTAGE TRS T3 SENSE CIRCUIT SHORT TO VOLTAGE TRS T41 SENSE - P/N SENSE CIRCUIT SHORT TO VOLTAGE TRS T42 SENSE CIRCUIT SHORT TO VOLTAGE TRANSMISSION RANGE SENSOR TRANSMISSION SOLENOID/TRS ASSEMBLY POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS DIAGNOSTIC PROCEDURE NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems. NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints. NOTE: Check for applicable TSB's that may apply. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2 With the DRBIII(R), perform the Shift Lever Position Test. Select the test outcome from the following: Test passes: Go To 3 Test fails with Error Code: Go To 4 Test fails without Error Code: Go To 23 The conditions necessary to set the DTC are not present at this time. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. NOTE: If the Transmission Solenoid/TRS connector is disconnected while the ignition key is in the ON or OFF position, code P0706 will be set. NOTE: In this case, the EATX DTC Event Data may show engine speed as zero, all TRS pin states as OPEN, all pressure switches as OPEN or CLOSED (all switches in the same state), and/or line pressure as zero. NOTE: Ensure the Transmission Solenoid/TRS connector is properly reconnected. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Test Complete. NOTE: Make sure to disconnect the Transmission Simulator and reconnect all disconnected connectors before proceeding. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. NOTE: When the DRBIII(R) requests the O/D off button be depressed, you must use the O/D OFF button in the vehicle or you will fail the Shift Lever Position Test with a shifter code 11. Turn the ignition off to the lock position. Remove the Starter Relay. Install Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the DRBIII(R), perform the Shift Lever Position Test. When the DRBIII(R) instructs you to put the Gear Selector in a particular position, you must do so using the selector switch on the Transmission Simulator. The LED for the gear position in question must be illuminated on the Transmission Simulator prior to pressing "ENTER" on the DRBIII(R). Did the Shift Lever Position test pass? Yes --> Go To 5 No --> Go To 6 Remove the Transmission Valve Body assembly for inspection. Refer to appropriate AUTOMATIC TRANSMISSION article. Is there significant metal debris on the manual valve code plate? Yes --> Repair internal transmission. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Replace the Transmission Solenoid Assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . With the DRBIII(R) under Transmission in Inputs/Outputs, for the following step monitor all TRS sense circuits, C1 through C5. Move the shift lever from P to L, pausing momentarily in each gear position. Watch for one of the circuits to not change state. Pick the one that did not change state. TRS T1/C4 Sense Go To 7 TRS T2 /C5 Sense Go To 10 TRS T3/C3 Sense Go To 13 TRS T41/C1 Sense Go To 16 TRS T42/C2 Sense Go To 19 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. NOTE: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the TRS T1 Sense circuit from the Transmission Solenoid/ TRS Assembly harness connector to the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes --> Repair the TRS T1 Sense circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the TRS T1 Sense circuit. Is the resistance below 5.0 ohms? Yes --> Repair the TRS T1 Sense circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 9 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Connect a jumper wire between the Fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the TRS T1 Sense circuit. Is the voltage above 0.5 volt? Yes --> Repair the TRS T1 Sense circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 22 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the TRS T2 Sense circuit between the Transmission Solenoid/TRS Assembly harness connector to the appropriate terminal of special tool #8815. Is the resistance above 5.0 ohms? Yes --> Repair the TRS T2 Sense circuit for an open. Perform (NGC) 45RPE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No --> Go To 11 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the TRS T2 Sense circuit. Is the resistance below 5.0 ohms? Yes --> Repair the TRS T2 Sense circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 12 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Connect a jumper wire between the Fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the TRS T2 Sense circuit. Is the voltage above 0.5 volt? Yes --> Repair the TRS T2 Sense circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 22 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the TRS T3 Sense circuit from the Solenoid/TRS Assembly harness connector to the appropriate terminal of special tool #8815. Is the resistance above 5.0 ohms? Yes --> Repair the TRS T3 Sense circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 14 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the TRS T3 Sense circuit. Is the resistance below 5.0 ohms? Yes --> Repair the TRS T3 Sense circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 15 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Connect a jumper wire between the Fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the TRS T3 Sense circuit. Is the voltage above 0.5 volt? Yes --> Repair the TRS T3 Sense circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 22 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C3 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the TRS T41 Sense - P/N Sense circuit from the Solenoid/TRS Assembly harness connector to the appropriate terminal of special tool #8815. Is the resistance above 5.0 ohms? Yes --> Repair the TRS T41 Sense - P/N Sense circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 17 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C3 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the TRS T41 Sense - P/N Sense circuit. Is the resistance below 5.0 ohms? Yes --> Repair the TRS T41 Sense - P/N Sense circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 18 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C3 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Connect a jumper wire between the Fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the TRS T41 Sense - P/N Sense circuit. Is the voltage above 0.5 volt? Yes --> Repair the TRS T41 Sense - P/N Sense circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 22 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the TRS T42 Sense circuit from the Solenoid/TRS Assembly harness connector to the appropriate terminal of special tool #8815. Is the resistance above 5.0 ohms? Yes --> Repair the TRS T42 Sense circuit for an open. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 20 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance between ground and the TRS T42 Sense circuit. Is the resistance below 5.0 ohms? Yes --> Repair the TRS T42 Sense circuit for a short to ground. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 21 Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Connect a jumper wire between the Fused B+ circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage, of the TRS T42 Sense circuit. Is the voltage above 0.5 volt? Yes --> Repair the TRS T42 Sense circuit for a short to voltage. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . No --> Go To 22 Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, view repair. Repair Replace the Powertrain Control Module and perform STANDARD PROCEDURE - TCM QUICK LEARN . Refer to ELECTRONIC CONTROL MODULES . Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 . If there are no possible causes remaining, view repair. Repair Adjust the shifter. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .

P0699 ACCELERATOR PEDAL POSITION SENSOR (APPS) SUPPLY VOLTAGE TOO HIGH When Monitored and Set Condition: When Monitored: While engine is running. Set Condition: High voltage detected at the APPS supply circuit. POSSIBLE CAUSES (K851) 5-VOLT SUPPLY OPEN (K851) 5-VOLT SUPPLY SHORT TO VOLTAGE ECM INTERMITTENT CONDITION (K852) 5-VOLT SUPPLY OPEN (K852) 5-VOLT SUPPLY SHORT TO VOLTAGE ECM INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE The diesel engine uses two types of throttle position sensors, depending on transmission configuration and build. Is the throttle position sensor is located on the engine? Yes --> Go To 2 No --> Go To 5 Turn the ignition off. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Measure the voltage between the (K851) 5-volt supply circuit at the sensor connector and battery negative. Is the voltage between 4.5 and 5.5 volts? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 3 Turn the ignition off. Disconnect the ECM harness connector(s). NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Measure the voltage between the (K851) 5-volt supply circuit in the sensor harness connector and battery negative. Is the voltage less than 1 volt? Yes --> Go To 4 No --> Repair or replace the wiring harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Reconnect the ECM harness connector(s). Ignition on, engine not running. Measure the voltage between the (K851) 5-volt supply circuit at the sensor harness connector and battery negative. Is the voltage greater than 6 volts? Yes --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Measure the voltage between the (K852) APPS #1 5-volt supply circuit at the sensor connector and battery negative. Is the voltage between 4.5 and 5.5 volts? Yes --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 6 Turn the ignition off. Disconnect the ECM harness connector(s). NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Measure the voltage between the (K852) APPS #1 5-volt supply circuit in the sensor harness connector and battery negative. Is the voltage less than 1 volt? Yes --> Go To 7 No --> Repair or replace the wiring harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Reconnect the ECM harness connector(s). Ignition on, engine not running. Measure the voltage between the (K852) APPS #1 5-volt supply circuit at the sensor harness connector and battery negative. Is the voltage greater than 6 volts? Yes --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P0698 ACCELERATOR PEDAL POSITION SENSOR (APPS) SUPPLY VOLTAGE TOO LOW When Monitored and Set Condition: When Monitored: With engine running. Set Condition: Low voltage detected at the APPS signal circuit. POSSIBLE CAUSES (K851) APPS 5-VOLT SUPPLY OPEN APPS HIGH RESISTANCE (K851) 5-VOLT SUPPLY CIRCUIT SHORTED TO (K922) RETURN CIRCUIT (K851) 5-VOLT SUPPLY CIRCUIT SHORTED TO BATTERY NEGATIVE (K851) 5-VOLT SUPPLY CIRCUIT SHORTED TO THE (K922) RETURN CIRCUIT ECM INTERMITTENT CONDITION (K852) 5-VOLT SUPPLY CIRCUIT SHORTED TO BATTERY NEGATIVE (K852) 5-VOLT SUPPLY CIRCUIT SHORTED TO OTHER CIRCUITS INTERNAL ECM APPS INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE The diesel engine uses two types of throttle position sensors, depending on transmission configuration. Is the throttle position sensor is located on the engine? Yes --> Go To 2 No --> Go To 9 Turn the ignition off. Disconnect the APPS harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Measure the voltage between the (K851) 5-volt supply circuit at the sensor connector and battery negative. Is the voltage between 4.5 and 5.5 volts? Yes --> Go To 3 No --> Go To 4 Connect a jumper wire between the (K851) 5-volt supply circuit in the APPS harness connector and battery voltage. With the DRBIII®, read DTCs. Did P0699 set? Yes --> Replace the Accelerator pedal position sensor. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 4 Measure the resistance between the APPS (K851) 5-volt supply circuit and (K922) return circuit of the sensor connector (APPS side) with the accelerator depressed and released. Is the resistance between 2000 and 3000 Ohms, depressed as well as released? Yes --> Go To 5 No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Disconnect the ECM harness connectors. Check connectors - Clean/repair as necessary. Measure the resistance between the (K851) 5-volt supply circuit and the (K922) return circuit in the sensor harness connector. Is the resistance less than 10 Ohms? Yes --> Repair the (K851) 5-volt supply circuit shorted to the (K922) Return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 6 Measure the resistance between the (K851) 5-volt supply circuit in the sensor harness connector and battery negative. Is the resistance less than 10 Ohms? Yes --> Repair the (K851) 5-volt supply circuit shorted to battery negative. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 7 Measure the resistance between the (K851) 5-volt supply circuit and the sensor (K922) return circuit in the sensor harness connector. Is the resistance less than 10 Ohms? Yes --> Repair the (K851) 5-volt supply circuit shorted to the (K922) Return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 8 Reconnect the ECM harness connector. Connect a jumper wire between the (K851) 5-volt supply circuit in the sensor harness connector and battery voltage. With the DRBIII®, read DTCs. Did the DTC for P0699 set? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the APPS harness connector. Check connectors - Clean/repair as necessary. Measure the resistance of the APPS 1 (K852) 5-volt supply circuit between the sensor harness connector and battery negative Is the resistance greater than 100 k ohms? Yes --> Go To 10 No --> Repair the (K852) 5-volt supply circuit shorted to battery negative. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (K852) APPS 1 5-volt supply circuit at the ECM harness connector and all other circuits in the ECM connector. Is the resistance greater than 100k ohms? Yes --> Go To 11 No --> Repair the APPS #1 (K852) 5-volt supply circuit shorted to other circuits. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connectors. While monitoring with the DRBIII®, connect a jumper wire between the (K23) APPS 1 signal circuit at the sensor harness connector and the (K852) APPS 1 supply circuit at the sensor harness connector. NOTE: With the APPS disconnected it is normal to have a APPS 1 and APPS 2 low voltage DTC set. Did a APPS 1 voltage too high DTC set? Yes --> Go To 12 No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). 12. Reconnect the APPS harness connector. Ignition on, engine not running. Monitor the APPS 1 and APPS 2 voltage with the DRBIII® while depressing the throttle pedal. Is the voltage transition shown on the DRBIII® smooth while depressing the throttle and is the volta Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace the APPS. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P0652 LOW VOLTAGE AT THE #1 SENSOR SUPPLY CIRCUIT When Monitored and Set Condition: When Monitored: With the key on. Set Condition: Voltage detected on the sensor supply is below a calibrated value. POSSIBLE CAUSES ECM (F855) #1 5-VOLT SUPPLY SHORTED TO GROUND (F855) #1 5-VOLT SUPPLY SHORTED FUEL RAIL PRESSURE A/C PRESSURE SENSOR MAP SENSOR CAMSHAFT POSITION SENSOR INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE Turn the ignition off. Disconnect the ECM 60 pin harness connector. NOTE: Check connectors - Clean/repair as necessary. Turn the ignition on. Measure the voltage between the Sensor (F855) #1 5-volt Supply and the Sensor (K916) #1 Return pin at the ECM. Is the voltage between 4.5 and 5.5 volts? Yes --> Go To 2 No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Disconnect the Pressure sensors harness connectors and the engine position sensor. Measure the resistance between the (P855) #1 sensor supply circuits at the ECM harness connector and battery negative. Is the resistance greater than 100K Ohms? Yes --> Go To 3 No --> Repair the harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connector. While monitoring with the DRBIII®, disconnect the fuel rail pressure sensor. Is DTC P0652 set? Yes --> Go To 4 No --> Replace the Fuel rail pressure sensor. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). While monitoring with the DRBIII®, disconnect the A/C pressure sensor. Is DTC P0652 set? Yes --> Go To 5 No --> Replace the A/C pressure sensor. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). While monitoring with the DRBIII®, disconnect the map sensor. Is DTC P0652 set? Yes --> Go To 6 No --> Replace the MAP sensor. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). While monitoring with the DRBIII®, disconnect the Camshaft position sensor. Is DTC P0652 set? Yes --> Go To 7 No --> Replace the Camshaft position sensor. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance between the (F855) #1 sensor supply circuit of the ECM harness connector and all other circuits in both ECM harness connectors. Is the resistance greater than 100K Ohms? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Repair the shorted circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P0647 HIGH VOLTAGE DETECTED AT THE A/C CLUTCH RELAY When Monitored and Set Condition: When Monitored: When the ignition is on. Set Condition: When the signal from the A/C Clutch output does not match the signal from the A/C Clutch feedback. POSSIBLE CAUSES LOOSE CONNECTION FUSED BATTERY SUPPLY A/C CLUTCH RELAY INTERMITTENT CONDITION ECM DIAGNOSTIC PROCEDURE Ignition on, engine not running. With the DRBIII®, actuate the A/C clutch relay. Can you hear the Relay clicking? Yes --> Go To 2 No --> Go To 3 Actuation still running. While the relay is clicking, wiggle the wiring harness and connectors throughout the circuit. Does this interrupt the clicking? Yes --> Repair the loose connection. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 3 Ignition on, engine not running. Measure the voltage on the Fused Battery Supply circuit in the PDC. Is the voltage within 1 volt of battery voltage? Yes --> Go To 4 No --> Repair the open Fused battery supply. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Remove the A/C Clutch Relay from the PDC. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between terminals 85 and 86 of the A/C Clutch Relay. Is the resistance less than 10 Ohms? Yes --> Go To 5 No --> Replace the A/C clutch relay. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connectors. Reinstall the A/C clutch relay. With the DRBIII®, actuate the A/C clutch relay. Turn the ignition on. While monitoring with the DRBIII®, disconnect the A/C Clutch Relay from the PDC. Did DTC P0646 set? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace the ECM. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

P0646 LOW VOLTAGE DETECTED AT THE A/C CLUTCH RELAY When Monitored and Set Condition: When Monitored: When the ignition is on. Set Condition: When the signal from the A/C Clutch output does not match the signal from the A/C Clutch feedback. POSSIBLE CAUSES A/C CLUTCH RELAY LOOSE CONNECTION FUSED BATTERY SUPPLY (C13) A/C SIGNAL CIRCUIT OPEN (C13) A/C SIGNAL CIRCUIT SHORTED TO GROUND INTERMITTENT CONDITION ECM DIAGNOSTIC PROCEDURE Ignition on, engine not running. With the DRBIII®, actuate the A/C clutch relay. Can you hear the Relay clicking? Yes --> Go To 2 No --> Go To 3 Actuation still running. While the relay is clicking, wiggle the wiring harness and connectors throughout the circuit. Does this interrupt the clicking? Yes --> Repair the loose connection. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Go To 3 Remove the A/C Clutch Relay from the PDC. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between terminals 85 and 86 of the A/C Clutch Relay. Is the resistance less than 100 Ohms? Yes --> Go To 4 No --> Replace the A/C clutch relay. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Ignition on, engine not running. Measure the voltage on the Fused Battery Supply circuit in the PDC. Is the voltage within 1 volt of battery voltage? Yes --> Go To 5 No --> Repair the open Fused battery supply. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Turn the ignition off. Disconnect the ECM harness connectors. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance of the (C13) A/C Clutch signal circuit between the PDC and the ECM harness connector. Is the resistance less than 10 Ohms? Yes --> Go To 6 No --> Repair the open (C13) A/C signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Measure the resistance of the (C13) A/C Clutch signal circuit between the PDC and battery negative. Is the resistance greater than 100k Ohms? Yes --> Go To 7 No --> Repair the (C13) A/C signal circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Reconnect the ECM harness connectors. Using the DRBIII®, actuate the A/C Clutch Relay While monitoring with the DRBIII®, use a jumper wire to connect 12 volts to the relay signal cavity (85) in the PDC with the relay disconnected. Did DTC P0647 set? Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). No --> Replace the ECM. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).