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P0462-FUEL LEVEL SENSOR 1 CIRCUIT LOW (CONTINUED) For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (N4) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO GROUND (N4) FUEL LEVEL SIGNAL CIRCUIT OPEN (A109 FUSED B+ CIRCUIT FUEL LEVEL SENSOR INSTRUMENT CLUSTER Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. FUEL LEVEL SENSOR VOLTAGE BELOW 0.4 OF A VOLT NOTE: Diagnose any CAN - B or CAN -C Communication DTCs before continuing. With the scan tool, read the Fuel Level Sensor voltage. Is the Fuel Level Sensor voltage below 0.4 of a volt? Yes >> Go To 2 No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 2. FUEL LEVEL SENSOR Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Ignition on, engine not running. Using a fused jumper wire, jump the (A109) Fused B+ circuit to the Did the Fuel gauge level change from empty to full? Yes >> Replace the Fuel Level Sensor. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 3 9 - 520 ENGINE ELECTRICAL DIAGNOSTICS WK |