3.
CHECK THE (G224) ENGINE OIL TEMPERATURE SENSOR SIGNAL FOR AN OPEN/HIGH RESISTANCE
1.
Turn the ignition off.
2.
Disconnect the PCM C1 harness connector.
3.
Measure the resistance of the (G224) Engine Oil Temperature Sensor Signal circuit between the Engine Oil Temperature Sensor harness connector and the PCM C1 harness connector.
4.
CHECK THE (K200) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1.
Measure the resistance of the (K200) Sensor Ground circuit between the Engine Oil Temperature Sensor harness connector and the PCM C1 harness connector.
Connect a jumper wire between the (K200) Sensor Ground circuit and the (G224) Engine Oil Temperature Sensor Signal circuit in the Engine Oil Temperature Sensor harness connector.
6.
Turn the ignition on.
7.
With the scan tool, select View DTCs.
NOTE:
The scan tool should display an P0197-Engine Oil Temperature Sensor Low DTC with the jumper wire in place.
Does the scan tool display the DTC as described above?
Yes
Replace the Engine Coolant Temperature Sensor in accordance with the service information.
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.
