Diagnostic Test
- ACTIVE DTC NOTE:
Diagnose and repair any system voltage or sensor reference voltage DTCs before continuing with this test.
- Turn the ignition on.WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
- With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
- Turn the ignition on.
- CHECK THE (G24) EOT SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
Courtesy of CHRYSLER GROUP, LLC
- Turn the ignition off.
- Disconnect the Engine Oil Temperature Sensor harness connector.
- Turn the ignition on.
- Measure the voltage of the (G24) EOT Signal circuit in the Engine Oil Temperature Sensor harness connector.
Is the voltage above 5.2 volts?
Yes
- Repair the (G24) EOT Signal circuit for a short to voltage.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 3
- CHECK THE (G24) EOT SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
- Turn the ignition off.
- Disconnect the PCM C1 and C2 harness connectors.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 the GPEC Diagnostic Adaptor to perform the diagnosis.
- Connect the (special tool #10436, Adapter, GPEC Diagnostic) to the PCM C2 harness connector.
- Measure the resistance of the (G24) EOT Signal circuit between the EOT Sensor harness connector and the GPEC Adaptor.
Is the resistance below 5.0 Ohms?
Yes
- Go To 4
No
- Repair the (G24) EOT Signal circuit for an open or high resistance.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- CHECK THE (K915) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 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 the GPEC Diagnostic Adaptor to perform the diagnosis.
- Connect the (special tool #10436, Adapter, GPEC Diagnostic) to the PCM C1 harness connector.
- Measure the resistance of the (K915) Sensor Ground circuit between the EOT Sensor harness connector and the GPEC Adaptor.
Is the resistance below 5.0 Ohms?
Yes
- Go To 5
No
- Repair the (K915) Sensor Ground 3 circuit for an open or high resistance.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- ENGINE OIL TEMPERATURE SENSOR
- Turn the ignition off.
- Reconnect the PCM C1 and C2 harness connectors.
- Connect a jumper between the (G24) EOT Signal circuit and the (K915) Sensor Ground in the EOT Sensor harness connector.
- Turn the ignition on.
- With the scan tool, read the Engine Oil Temperature Sensor signal voltage.
Is the voltage below 0.1 volts with the jumper in place?
Yes
- Replace the Engine Oil Temperature Sensor in accordance with the service information. Refer to SENSOR, OIL TEMPERATURE, REMOVAL .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 6
- 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.
- Perform any Technical Service Bulletins that may apply.
Were any problems found?
Yes
- Repair as necessary.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Replace and program the Powertrain Control Module (PCM) in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .