Fuel Gauge Test
- Connect scan tool. Turn ignition switch to RUN position. Access IPC trouble codes function. If scan tool displays DTC B0028 (FUEL SENDER CIRCUIT), go to step 4). If scan tool does not display FUEL SENDER CIRCUIT, turn ignition switch to OFF position. Disconnect fuel gauge sender connector.
- Connect 2 Red leads of Gauge Tester (J 33431) to fuel gauge sender connector terminals "B" (Purple wire) and "D" (Black wire). Turn ignition switch to RUN position. Set resistance dials on tester to zero ohms (empty), then to 90 ohms (full). If fuel gauge fluctuates from empty to full, check for poor connections at fuel gauge sender or for damage to pigtail wiring. If connections and pigtail wiring are okay, replace fuel gauge sender.
- If fuel gauge does not fluctuate from empty to full, check for open, high resistance or short to ground in Purple wire. Check for open circuit or high resistance in Black wire. Also, check for poor connections at fuel gauge sender and instrument cluster. If wires and connections are okay, see CLUSTER POWER & GROUND TEST .
- Turn ignition switch to OFF position. Disconnect fuel gauge sender connector. Connect a jumper wire between fuel gauge sender connector terminal "B" (Purple wire) and ground. Turn ignition switch to RUN position. If fuel gauge indicates empty, go to step 6). If fuel gauge does not indicate empty, turn ignition switch to OFF position. Disconnect instrument cluster connector C2.
- Check for open or high resistance in Purple wire at fuel gauge sender. Also check for poor connection at instrument cluster. If Purple wire and connection are okay, see CLUSTER POWER & GROUND TEST .
- Turn ignition switch to OFF position. Check for open or high resistance in Black wire. Also check for poor connections at fuel gauge sender or for damage to pigtail wiring. If Black wire, connections and pigtail wiring are okay, replace fuel gauge sender.