Water In Fuel Indicator Always On (Diesel)
- Disconnect water in fuel sender harness connector. If indicator light goes out, replace water in fuel sender. If indicator remains on, go to next step.
- Disconnect instrument panel harness connector. Connect test light between instrument panel harness connector terminal No. 18 (Yellow/Black wire) and ground. If test light does not light, replace instrument cluster. If test light lights, repair short to ground in Yellow/Black wire.