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Fuel Pump Circuit (100)

  1. Ensure fuse No. 17 is okay. Refer to the ELECTRICAL COMPONENT LOCATIONS  table at beginning of article. Ensure fuel filter is okay and battery is fully charged. While operating starter for several seconds, measure voltage at fuse No. 17.
  2. If battery voltage is not present, go to next step. If battery voltage is present, check for open circuit between fuse No. 17 and fuel pump, and between fuel pump and ground. If circuit is okay, replace fuel pump.
    NOTE: Fuel pump connector is accessible through cover on trunk floor.
  3. Check fuel pump relay. See FUEL PUMP RELAY (100). If relay is okay, remove fuel pump relay. Turn ignition on. Check voltage at fuel pump relay terminals No. 28 and 30. See Figure . If battery voltage is not present, repair relay power supply circuit.
  4. If battery voltage is present, check for open circuit between fuel pump relay connector terminal No. 30 and fuse No. 17. If circuit is okay, check for open circuit between fuel pump relay connector terminal No. 29 and ECM. If circuit is okay, replace ECM.
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