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Test Description

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The numbers below refer to the step numbers in the diagnostic procedure.

  1. 2  - Command both the ON and OFF states. Repeat the commands as necessary.
  2. 3  - This step determines if the condition is located on the coil side or the switch side of the circuit.
  3. 4  - This step verifies that the PCM is providing voltage to the fuel pump relay.
  4. 5  - This step tests for an open in the ground circuit to the fuel pump relay.
  5. 6  - This step determines if a voltage is constantly being applied to the fuel pump relay.
  6. 12  - To gain access to the fuel pump connector, the fuel tank may need to be removed. This step tests for a grounded fuel pump supply circuit between the fuel pump and the fuel pump fuse.
  7. 13  - This step determines if the condition with the circuit is intermittent. If the fuse does not open, inspect the supply voltage circuit between the fuse and the fuel pump for an intermittent condition.
  8. 15  - Use the same amperage fuse in the jumper as is used to protect the fuel pump circuit.
  9. 16  - To gain access to the fuel pump connector, the fuel tank may need to be removed.
  10. 17  - Check the ground connection for the fuel pump. Ensure all ground connections are clean and tight.
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