11/10/2022 0 Comments City car driving 1.4.1 escalade![]() One of the other pins will be voltage feedback to the gas gauge. ![]() You should always have 5 V or 12 V on one of the pins. At this point, with the key in the ON position (but without starting the engine), back-probe the connector and check for voltage. Remove the fuel pump module so you can manipulate the float arm. Make sure the pins are straight and that the connector is fully seated. Start by making sure the plug is clean, dry, and free of corrosion. The fuel sender test should be conducted when the tank is lower than HALF, to prevent fuel splashing. Note that some self-test steps may stop the gas gauge at 1/4, 1/2, and 3/4, as well. Pay special attention to whether or not the gas gauge sweeps smoothly from EMPTY to FULL. The test puts the instrument cluster through its paces, testing the digital lights and readouts as well as swiping the gauges through their ranges. The procedure may be in your owner’s manual or available online (enter “ instrument cluster self-test” in your favorite search engine). Many modern cars and trucks are equipped with an instrument cluster self-test feature to test computer-controlled instrument clusters. Then, run through the following tests to determine the source fo the problem. īefore you begin testing your gas gauge, gather the following tools: an electrical wiring diagram (EWD), a digital multimeter (DMM), and basic hand tools. Repeat to self, “The electrical wiring diagram is your friend and can help you fix a broken gas gauge.”. If the gas gauge fails as part of the cluster, the whole unit must be replaced.
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