Diagnostic Test

1. Turn the ignition off.
2. 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.
3. Start the engine and allow it to reach normal operating conditions.
4. With the scan tool, select View DTCs.

   Is the status Active or Pending for this DTC?

   Yes 

   • Go To  2.

   No 

   • Refer to STANDARD PROCEDURE and perform the INTERMITTENT CONDITION diagnostic procedure.

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 

• Repair as necessary.
• Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.

No 

• Go To  3.

1. Turn the ignition off.
2. Disconnect the Engine Oil Temperature Sensor harness connector.
3. Turn the ignition on.
4. With the scan tool, read the Engine Oil Temperature Sensor voltage.
   NOTE:

   The sensor voltage should be approximately 5.0 Volts (plus or minus 0.1 Volt) with the connector disconnected.

   Does the scan tool display the voltage as described above?

   Yes 

   • Go To  4.

   No 

   • Go To  5.

Fig 1: Checking Engine Oil Temperature Sensor

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Connect a jumper wire between the (G24) EOT Signal circuit and the (K915) Sensor Ground circuit in the Engine Oil Temperature Sensor harness connector.
3. Turn the ignition on.
4. With the scan tool, read the Engine Oil Temperature Sensor voltage.
   NOTE:

   The sensor voltage should be approximately 0.0 Volts (plus or minus 0.1 Volt) with the jumper wire in place.

   Does the scan tool display the voltage as described above?

   Yes 

   • Replace the Engine Oil Temperature Sensor.
   • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.

   No 

   • Go To  5.

Fig 2: Checking Engine Oil Temp Signal Circuit For Open

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
3. Measure the resistance of the (G24) EOT Signal circuit between the Engine Oil Temperature Sensor harness connector and the PCM C2 harness connector.

   Is the resistance below 5.0 Ohms?

   Yes 

   • Go To  6.

   No 

   • Repair the (G24) EOT Signal circuit for high resistance.
   • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.

Fig 3: Checking Sensor Ground Circuit For Open

Courtesy of CHRYSLER GROUP, LLC

1. Measure the resistance of the (K915) Sensor Ground circuit between the Engine Oil Temperature Sensor harness connector and the PCM C2 harness connector.

   Is the resistance below 5.0 Ohms?

   Yes 

   • Go To  7.

   No 

   • Repair the (K915) Sensor Ground circuit for high resistance.
   • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.

1. 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).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
5. Look for the data to change or for the DTC to reset during the wiggle test.
6. Perform any Technical Service Bulletins that may apply.

   Were any problems found?

   Yes 

   • Repair as necessary.
   • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.

   No 

   • Replace and program the Powertrain Control Module in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
   • Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION TEST.