GSIC - Global Service Information Center

# FUEL PUMP > INSPECTION

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1. INSPECT FUEL PUMP

1. Check the fuel pump resistance.

   1. Using an ohmmeter, measure the resistance between terminals 4 and 5.

      Standard resistance:
        0.2 to 3.0 at 20°C (68°F)
      If the result is not as specified, replace the fuel pump.

1. Check fuel pump operation.

   1. Apply battery voltage to terminals 4 and 5. Check that the pump operates.

      NOTICE:
      1. This test must be completed within 10 seconds to prevent the coil from burning out.
      2. Keep fuel pump as far away from the battery as possible.
      3. Always turn on and off the voltage on the battery side, not the fuel pump side.
      If the pump does not operate, replace the fuel pump.

2. INSPECT FUEL PUMP RELAY ASSEMBLY

1. Check the resistance.

   1. Using an ohmmeter, check the resistance between each terminal.

      Standard resistance:

        Tester Connection | Specified Condition
        1 - 2 3 - 4 | Below 1 Ω
        3 - 5 | 10 kΩ or higher

   2. Using an ohmmeter, check the resistance between terminals 3 and 5 when the battery voltage is applied across terminals 1 and 2.

      Specified condition:
        Below 1 Ω