Low Fuel Indicator

Turn ignition to "ON" position. Indicator light should come on, but for less than 1 minute if tank is more than 1/2 full of fuel. If indicator light remains on, or does not turn on when tank is less than 1/4 full of fuel, perform the following checks at the wiring harness-to-switch connector. Terminal 1 is blank. Connect self-powered test light between terminal 2 and ground, then between terminal 3 and ground. Test light should blink at both terminals, but light should be brighter at terminal 3. Test light should remain on when connected between terminal 4 and battery post; and also remain on when connected between terminal 5 and ground. When a jumper wire is connected between terminal 6 and battery positive post, indicator light should turn on and remain on. If any test fails, repair open circuit in wire to that particular terminal. If all terminals test good, make fuel gauge and IVR calibration test. If gauge and IVR calibration test is good, replace low fuel warning sensor/switch and retest.