P0341 CAMSHAFT POSITION (CMP) SENSOR SIGNAL

When Monitored and Set Condition:

When Monitored: While the engine is running.
Set Condition: The ECM no longer detects a signal from the Engine Position Sensor.

POSSIBLE CAUSES

• INJECTOR DTCS PRESENT
• OTHER DTCS
• CAMSHAFT SENSOR
• (K53) SIGNAL CIRCUIT OPEN
• (K72E) 5-VOLT SUPPLY CIRCUIT OPEN
• (K55) RETURN CIRCUIT OPEN
• (K53) SIGNAL CIRCUIT SHORTED TO GROUND
• (K53) SIGNAL CIRCUIT SHORTED TO (K72E) 5-VOLT SUPPLY CIRCUIT
• (K53) SIGNAL CIRCUIT SHORTED TO (K55) RETURN CIRCUIT
• (K53) SIGNAL CIRCUIT SHORT TO VOLTAGE
• ECM
• INTERMITTENT CONDITION

DIAGNOSTIC PROCEDURE

1. With the DRBIII®, read DTCs. Do you have a DTC for P2146 or P2149?
   Yes --> Repair injector DTCs first. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
   No --> Go To 2
2. With the DRBIII®, read DTCs. Is any other DTCs present?
   Yes --> Repair other DTCs first. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
   No --> Go To 3
3. Turn the ignition off. Disconnect the cam sensor harness connector. Check connectors - Clean/repair as necessary. Measure the resistance between the (K72E) 5-volt supply circuit and the (K53) signal circuit of the sensor. Is the resistance between 900 and 1100 ohms?
   Yes --> Go To 4
   No --> Replace the camshaft sensor. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
4. Disconnect the ECM harness connectors. Measure the resistance of the (K53) signal circuit between the ECM harness connector and the sensor harness connector. Is the resistance less than 10 ohms?
   Yes --> Go To 5
   No --> Repair the open (K53) signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
5. Measure the resistance of the (K72E) 5-volt supply circuit between the ECM harness connector and the sensor harness connector. Is the resistance less than 10 ohms?
   Yes --> Go To 6
   No --> Repair the open (K72E) 5-volt supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
6. Measure the resistance of the (K55) return circuit between the ECM harness connector and the sensor harness connector. Is the resistance less than 10 ohms?
   Yes --> Go To 7
   No --> Repair the open (K55) return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
7. Measure the resistance between the (K53) signal circuit in the sensor harness connector and battery negative. Is the resistance greater than 100k ohms?
   Yes --> Go To 8
   No --> Repair (K53) signal circuit shorted to ground. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
8. Measure the resistance between the (K53) signal circuit and the (K72E) 5-volt supply circuit in the sensor harness connector. Is the resistance greater than 100k ohms?
   Yes --> Go To 9
   No --> Repair (K53) signal circuit shorted to the (K72E) 5-volt supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
9. Measure the resistance between the (K53) signal circuit and the (K55) return circuit in the sensor harness connector. Is the resistance greater than 100k ohms?
   Yes --> Go To 10
   No --> Repair (K53) signal circuit shorted to the (K55) return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
10. Measure the voltage between the (K53) signal circuit in the sensor harness connector and battery negative.Is the voltage less than 1 volt?
    Yes --> Go To 11
    No --> Repair (K53) signal circuit shorted to voltage. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).
11. Reconnect the ECM harness connectors. Measure the voltage between the (K53) signal circuit in the sensor harness connector and battery negative. Is the voltage less than 1 volt?
    Yes --> Test Complete.
    No --> Replace the ECM. Perform POWERTRAIN VERIFICATION TEST VER - 2 (DIESEL).