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Test C: Fuel Gauge Reads Incorrectly

  1. Test fuel gauge. See FUEL GAUGE TEST  under COMPONENT TESTS. If fuel gauge functions correctly, go to next step. If fuel gauge does not function correctly, go to step  4.
  2. Visually inspect fuel tank for any damage or deformation. If fuel tank is okay, go to next step. If fuel tank is not okay, replace fuel tank.
  3. Visually inspect fuel pump module, wiring, float and float rod for damage or obstruction. If fuel pump module and wiring is okay, replace fuel gauge sending unit.
  4. Turn ignition switch to LOCK position. Disconnect fuel pump/sending unit harness connector C441 (C442 on California models). Measure resistance between fuel level sensor ground and Black/Orange wire terminal at fuel pump/sending unit connector C441 or C442. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Black/Orange wire and retest.
  5. Disconnect instrument cluster connectors. Measure resistance between terminal No. 10 (Yellow/White wire) at instrument cluster harness connector C250b and Yellow/White wire terminal at fuel pump/sending unit harness connector C441 or C442. Measure resistance between ground and terminal No. 10 (Yellow/White wire) at instrument cluster harness connector C250b. If resistance is 5 ohms or less between instrument cluster and fuel pump/sending unit and more than 10 k/ohms between instrument cluster and ground, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. If resistance is more than 5 ohms between instrument cluster and fuel pump/sending unit and less than 10 k/ohms between instrument cluster and ground, repair circuit and retest.
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