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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 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 SENSOR • With the scan tool, clear the DTC. Turn the ignition off. Disconnect the Engine Oil Temp Sensor harness connector. Connect a jumper wire between the (G224) Engine Oil Temp Signal cir- Ignition on, engine not running. With a scan tool, read DTCs. Does the P0197-ENGINE OIL TEMPERATURE SENSOR CIRCUIT Yes >> Replace the Engine Oil Temp Sensor. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 3 NOTE: Remove the jumper wire before continuing. 9 - 220 ENGINE ELECTRICAL DIAGNOSTICS LX |