Fuel Gauge Indicates Full Or Above At All Times (Single Tank)
- Disconnect instrument cluster connector. Connect a fused jumper wire between instrument cluster connector terminal No. 22 (Pink wire) and battery voltage. See Figure. See WIRING DIAGRAMS. Connect another fused jumper wire between instrument cluster connector terminal No. 16 (Purple wire) and ground. Connect a third fused jumper wire between instrument cluster connector terminal No. 31 (Black/White wire) and ground. Turn ignition on. If fuel gauge indicates empty, go to next step. If fuel gauge indicates full, replace instrument cluster.
- Remove fused jumper wires from instrument cluster connector and reconnect connector. Disconnect fuel pump/sender connector. Connect a fused jumper wire between ground and fuel pump/sender connector terminal "A" (Purple/White wire) on gasoline, or terminal "B" (Purple wire) on diesel. See WIRING DIAGRAMS . If fuel gauge indicates empty, go to next step. If fuel gauge indicates full, repair open in Purple wire (gasoline) between instrument cluster and Vehicle Control Module (VCM), or Purple/White wire (gasoline) between VCM and fuel pump/sender; or in Purple wire (diesel) between instrument cluster and fuel pump/sender.
- If vehicle is gasoline powered, replace fuel pump/sender. If vehicle is diesel powered, connect a fused jumper wire between fuel pump/sender connector terminals "B" (Purple wire) and "A" (Black/White wire). See WIRING DIAGRAMS . If fuel gauge indicates full, repair open in Black/White wire between fuel pump/sender and ground connection. If fuel gauge indicates empty, replace fuel pump/sender.