Fuel Pressure Relieving
Before disconnecting fuel lines or hoses, relieve pressure from the system by disabling the fuel pump running the engine until it stalls, then and disconnecting the fuel line/quick connect fitting in the engine compartment.
With the HDS
  1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
  1. Turn the ignition switch to ON (II).
  1. Make sure the HDS communicates with the ECM/PCM. If it doesn't, go to the DLC circuit troubleshooting.
  1. Turn the ignition switch to LOCK (0).
  1. Remove the fuel fill cap to relieve the pressure in the fuel tank.
  1. Turn the ignition switch to ON (II).
  1. From the INSPECTION MENU of the HDS, select Fuel Pump OFF, then start the engine, and let it idle until it stalls.
    NOTE:
    • Do not allow the engine to idle above 1,000 rpm (min −1 ) or the ECM/PCM will continue to operate the fuel pump.
    • A DTC or a Temporary DTC may be set during this procedure. Check for DTCs, and clear them as needed.
  1. Turn the ignition switch to LOCK (0).
  1. Do the battery terminal disconnection procedure.