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Test B - Fuel Gauge Inaccurate

  1. Perform FUEL GAUGE SENDING UNIT TEST  under COMPONENT TESTING. If sending unit is okay, go to next step. Replace sending unit if it fails test.
  2. Perform FUEL GAUGE TEST  under COMPONENT TESTING. If fuel gauge is okay, go to next step. Replace fuel gauge if it fails test.
  3. Unplug fuel tank sending unit harness connector. Measure resistance between Black/Red wire at sending unit harness connector and chassis ground. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open Black/Red wire.
  4. Turn ignition off. Unplug 14-pin connector from instrument cluster. Measure resistance between Yellow wire at harness connector pin No. 8 and Red wire at fuel pump harness connector. If resistance is less than 5 ohms, replace instrument cluster printed circuit. If resistance is not less than 5 ohms, repair Yellow wire (wire color changes from Yellow to Red between instrument cluster and fuel gauge sending unit).
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