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Diagnostic Test

  1. 1) DTC IS ACTIVE 
    NOTE: Diagnose any CAN - C Communication DTCs before continuing.

    Turn the ignition off.

    If possible, allow the vehicle to sit with the ignition off for more than 60 minutes in an environment where the temperature will allow the oil temperature to cool down.

    Start the engine and allow it to reach normal operating conditions.

    With a scan tool, select View DTCs.

    Is the status Active or Pending for this DTC? 

    Yes 

    1. Go To  2).

    No 

    1. Refer to the *CHECKING FOR AN INTERMITTENT CONDITION Diagnostic Procedure.
  2. 2) ENGINE OIL 

    The following conditions must be checked.

    • OEM recommended oil viscosity is being used.
    • Customer is following the oil change schedule.
    • Check the engine oil for contamination. (i.e, fuel and/or engine coolant)
    • Internal engine condition that may effect oil pressure.

    Were any of the above conditions found? 

    Yes 

    1. Repair as necessary.
    2. Perform PCM VERIFICATION TEST .

    No 

    1. Go to  3).
  3. 3) (G24) EOT SIGNAL CIRCUIT SHORTED TO VOLTAGE 
    Fig 1: Measuring Voltage Of (G24) EOT Signal Circuit In Engine Oil Temperature Sensor Harness Connector
    GC0053922Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Engine Oil Temperature Sensor connector.

    Disconnect the Powertrain Control Module (PCM) connector.

    Turn the ignition on.

    Measure the voltage of the (G24) EOT Signal circuit in the Engine Oil Temperature Sensor harness connector.

    Is there any voltage present? 

    Yes 

    1. Repair the (G24) EOT Signal circuit for a short to voltage.
    2. Perform PCM VERIFICATION TEST .

    No 

    1. Go to  4).
  4. 4) (G24) EOT SIGNAL CIRCUIT SHORTED TO GROUND 
    Fig 2: Checking EOT Sensor Signal Circuit For Short To Ground
    GC0053923Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Measure the resistance between ground and the (G24) EOT Signal circuit in the Engine Oil Temperature Sensor harness connector.

    Is the resistance above 100 ohms? 

    Yes 

    1. Go to  5).

    No 

    1. Repair the (G24) EOT Signal circuit for a short to ground.
    2. Perform PCM VERIFICATION TEST .
  5. 5) (G24) EOT SIGNAL CIRCUIT SHORTED TO (K915) SENSOR GROUND CIRCUIT 
    Fig 3: Checking EOT Sensor Signal Circuit For Short To Ground Circuit
    GC0053924Courtesy of CHRYSLER LLC

    Measure the resistance between the (G24) EOT Signal circuit and the (K915) Sensor Ground circuit in the Engine Oil Temperature Sensor harness connector.

    Is the resistance above 100 ohms? 

    Yes 

    1. Go to  6).

    No 

    1. Repair the (G24) EOT Signal circuit for a short to the (K915) Sensor Ground circuit.
    2. Perform PCM VERIFICATION TEST .
  6. 6) (G24) EOT SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 4: Checking EOT Sensor Signal Circuit For Open Or High Resistance
    GC0053925Courtesy of CHRYSLER LLC

    Measure the resistance of the (G24) EOT Signal circuit between the Engine Oil Temperature Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to  7).

    No 

    1. Repair the (G24) EOT Signal circuit for an open circuit or high resistance.
    2. Perform PCM VERIFICATION TEST .
  7. 7) (K915) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 5: Checking EOT Sensor Ground Circuit For Open Or High Resistance
    GC0053926Courtesy of CHRYSLER LLC

    Measure the resistance of the (K915) Sensor Ground circuit between the Engine Oil Temperature Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to  8).

    No 

    1. Repair the (K915) Sensor Ground for an open circuit or high resistance.
    2. Perform PCM VERIFICATION TEST .
  8. 8) ENGINE OIL TEMPERATURE SENSOR 
    Fig 6: Connecting Jumper Wire Between EOT Sensor Ground Circuit And Signal Circuit In EOT Sensor Harness Connector
    GC0053927Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Connect the Powertrain Control Module (PCM) connector.

    Connect a jumper wire between the (K915) Sensor Ground circuit and the (G24) EOT Signal circuit in the Engine Oil Temperature Sensor harness connector.

    Turn the ignition on.

    With the scan tool, read the Engine Oil Temperature Sensor signal voltage.

    Is the voltage below 1.0 volt with the jumper wire in place? 

    Yes 

    1. Replace the Engine Oil Temperature Sensor in accordance with the Service Information.
    2. Perform PCM VERIFICATION TEST .

    No 

    1. Go to  9).
  9. 9) POWERTRAIN CONTROL MODULE (PCM) 

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Engine Oil Temperature Sensor and the Powertrain Control Module (PCM).

    Look for any chafed, pierced, pinched, or partially broken wires.

    Look for broken, bent, pushed out or corroded terminals.

    Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.

    Look for the data to change or for the DTC to reset during the wiggle test.

    Refer to any Technical Service Bulletins that may apply.

    Were any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform PCM VERIFICATION TEST .

    No 

    1. Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
    2. Perform PCM VERIFICATION TEST .
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