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• When Monitored: • Set Condition: Possible Causes INTERMITTENT DTC (N4) FUEL LEVEL SENSOR NO. 1 SIGNAL CIRCUIT SHORTED TO VOLTAGE (Z210) GROUND CIRCUIT SHORTED TO VOLTAGE (N4) FUEL LEVEL SENSOR NO. 1 SIGNAL CIRCUIT SHORTED TO GROUND (N4) FUEL LEVEL SENSOR NO. 1 SIGNAL CIRCUIT SHORTED TO (Z210) GROUND CIRCUIT (N4) FUEL LEVEL SENSOR NO. 1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE (Z210) GROUND CIRCUIT OPEN OR HIGH RESISTANCE FUEL LEVEL SENSOR INSTRUMENT CLUSTER (CCN) Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, Clear DTCs in the Instrument Cluster (CCN). Monitor the scan tool for at least two minutes. Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time. Start the engine. Allow the engine to reach normal operating temperature. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes >> Go To 2 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 2. (N4) FUEL LEVEL SENSOR NO. 1 SIGNAL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Fuel Pump connector. Disconnect the Instrument Cluster (CCN) connector. Turn the ignition on. Measure the voltage of the (N4) Fuel Level Sensor No. 1 Signal circuit Is there any voltage present? Yes >> Repair the (N4) Fuel Level Sensor No. 1 Signal circuit for a short to voltage. Perform the BODY VERIFICATION TEST VER 1. (Refer to No >> Go to 3 9 - 1396 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |