Operational Test

WARNING: The fuel system remains under pressure when the engine Is not running. Release fuel system pressure before disconnecting any fuel line to reduce the chance of personal injury or fire damage to vehicle components.

Fuel pump operation




1. Connect data link connector terminals FUEL PUMP and B+ with jumper wire.
2. Remove fuel filler cap.
3. Turn ignition switch ON.
4. Determine if fuel pump is running by listening for sound of it at fuel filler inlet.
5. Install fuel filler cap.




6. If no sound was heard, measure voltage between fuel pump connector wire (PNK) to chassis ground.

Voltage: Approx. 12 V

7. If voltage is not correct, check related wiring harness and repair as necessary.
8. If you do measure 12 V, check for continuity between fuel pump connector terminal wires (PNK) and (BLK).
9. If there is continuity, replace fuel delivery module.
10. If there is no continuity, repair ground circuit.