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  • P0517 High Voltage At The Battery Temperature Sensor

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    P0517 HIGH VOLTAGE AT THE BATTERY TEMP SENSOR

    When Monitored and Set Condition:

    When Monitored: With ignition on and battery voltage greater than 10.4 volts.
    Set Condition: The circuit voltage to the ECM is above a calibrated threshold for a certain period of time.

    POSSIBLE CAUSES

    • BATTERY TEMP SENSOR
    • (K118) SIGNAL CIRCUIT OPEN
    • (K4) RETURN CIRCUIT OPEN
    • (K118) SIGNAL CIRCUIT SHORTED
    • ECM
    • INTERMITTENT CONDITION

    DIAGNOSTIC PROCEDURE

    1. Disconnect the Battery temp sensor harness connector. Check connectors - Clean/repair as necessary. Measure the resistance of the Battery temp sensor Is the resistance between 300 and 90k ohms?
      Yes --> Go To 2
      No --> Replace the Battery temp sensor. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
    2. Reconnect the disconnected Battery temp sensor harness connector. Disconnect the ECM harness connectors. Check connectors - Clean/repair as necessary. Measure the resistance between the temperature sensor (K118) signal and (K4) return circuits at the ECM harness connector. Is the resistance between 300 and 90k ohms?
      Yes --> Go To 5
      No --> Go To 3
    3. Disconnect the Battery temp sensor harness connector. Measure the resistance of the sensor (K118) signal circuit between the sensor harness connector and the ECM harness connector. Is the resistance less than 10 Ohms?
      Yes --> Go To 4
      No --> Repair the open (K118) signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
    4. Measure the resistance of the sensor (K4) return circuit between the sensor harness connector and the ECM harness connector. Is the resistance less than 10 Ohms?
      Yes --> Go To 5
      No --> Repair the open (K4) return circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
    5. Check for a short circuit from (K118) signal circuit to all other circuits at the ECM harness connector. Is the resistance more than 100k ohms?
      Yes --> Go To 6
      No --> Repair the shorted (K118) signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
    6. Reconnect the ECM harness connectors. While monitoring with DRBIII®, use a jumper wire and connect the sensor (K118) signal circuit to the sensor (K4) return circuit at the sensor harness connector. Did P0516 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).

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