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2. (K2) ENGINE COOLANT TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Engine Coolant Temperature Sensor connector. Disconnect the Engine Control Module (ECM) connector. Remove the ASD Relay from the IPM. Connect a jumper wire between cavity 30 and cavity 87 of the ASD Turn the ignition on. Measure the voltage of the (K2) Engine Coolant Temperature Sensor Is there any voltage present? Yes >> Repair the (K2) Engine Coolant Temperature Sensor Signal circuit for a short to voltage. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go to 3 3. (K222) ENGINE COOLANT TEMPERATURE SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE NOTE: The jumper wire should still be in place. Is there any voltage present? Yes >> Repair the (K222) Engine Coolant Temperature Sensor Ground circuit for a short to voltage. Perform the ECM Verification Test Ver. 1. (Refer to 9 - No >> Go to 4 4. (K2) ENGINE COOLANT TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (K2) Engine Coolant Is the resistance above 10.0 ohms? Yes >> Go to 5 No >> Repair the (K2) Engine Coolant Temperature Sensor Signal circuit for a short to ground. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 9 - 1148 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |