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• When Monitored: • Set Condition: Possible Causes (G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE (G224) ENGINE OIL TEMP SIGNAL CIRCUIT OPEN (K900) SENSOR GROUND CIRCUIT OPEN (G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO GROUND (G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND ENGINE OIL TEMPERATURE SENSOR PCM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes >> Go To 2 No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 2. ENGINE OIL TEMP SIGNAL CIRCUIT Turn the ignition off. Disconnect the Engine Oil Temp Sensor harness connector. Ignition on, engine not running. Measure the voltage on the (G224) Engine Oil Temp Signal circuit in the Engine Oil Temp Sensor harness connec- Is the voltage between 4.8 to 5.2 volts? Yes >> Go To 3 No >> Go To 4 3. (K900) SENSOR GROUND CIRCUIT Measure the resistance between ground and the (K900) Sensor Ground circuit in the Engine Oil Temp Sensor har- Is the resistance below 15.0 ohms? Yes >> Replace the Engine Oil Temperature Sensor. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 8 9 - 212 ENGINE ELECTRICAL DIAGNOSTICS LX |