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Test E: Fuel Gauge Always Reads Full

  1. Turn ignition off. Disconnect fuel pump assembly connector C343. See Figure . Measure resistance between ground and fuel pump connector C343 Black wire. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Black wire.
  2. Check fuel tank sending unit. See FUEL TANK SENDING UNIT  under COMPONENT TESTS. Repair if necessary. If fuel tank sending unit is okay, go to next step.
  3. Turn ignition off. Disconnect fuel pump assembly connector C343. Remove instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Disconnect instrument cluster connector C272. See Figure . Measure resistance of Blue/Red wire between instrument cluster connector C272 terminal No. 1 and fuel pump assembly connector C343. If resistance is less than 5 ohms, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. If resistance is 5 ohms or more, repair open Blue/Red wire.
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