Fuel Gauge Indicates Full At All Times (Dual Tanks)
- Disconnect instrument cluster connector. Connect a fused jumper wire between instrument cluster connector terminal No. 31 (Black/White wire) and ground. See Figure. See WIRING DIAGRAMS . Connect another fused jumper wire between instrument cluster connector terminal No. 22 (Pink wire) and battery voltage. Connect a third fused jumper wire between instrument cluster connector terminal No. 16 (Purple wire) and ground. 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. Reconnect instrument cluster connector. Disconnect fuel pump balance module connector. Connect a fused jumper wire between ground and fuel pump balance module connector C2 terminal "B" (Purple wire) on gasoline, or fuel pump balance module connector terminal "F" (Purple wire) on diesel. See WIRING DIAGRAMS . If fuel gauge indicates full, repair open in Purple wire between fuel pump balance module and VCM (gasoline), or instrument cluster (diesel). If fuel gauge indicates empty, reconnect fuel pump balance module connector and go to FUEL GAUGE INACCURATE (DUAL TANKS) test.