Fuel Pressure Release: Service and Repair

Fuel System Pressure Release Procedure







The fuel system is under constant high pressure even with the engine off. Until the fuel pressure has been properly relieved from the system, do not attempt to open the fuel system. Do not smoke or use open flames/sparks when servicing the fuel system. Wear protective clothing and eye protection. Make sure the area in which the vehicle is being serviced is in a well ventilated area and free of flames/sparks.

A separate fuel pump relay is not used. A circuit within the totally integrated power module is used to control the electric fuel pump located within the fuel pump module.

- Remove the fuel fill cap.

- Disconnect fuel pump module electrical connector.

- Start and run the engine until it stalls.

- Attempt to restart the engine until it will no longer run.

- Turn the ignition key to the OFF position.

- Place a clean cloth or shop towel below the fuel line quick connect fitting on the fuel rail.

- Disconnect the quick connect fitting at the fuel rail.

• After servicing the fuel system, one or more diagnostic trouble codes may have been stored in the powertrain control module memory due to disconnecting the fuel pump module circuit. A diagnostic scan tool must be used to erase any stored DTCs.