Fuel Pressure Hold
- Disconnect negative battery cable. Install fuel pressure gauge in fuel supply line. Reconnect negative battery cable.
- Locate data link connector in left side of engine compartment. Connect a jumper wire between data link connector terminals F/P and GND. Turn ignition on for 10 seconds to operate fuel pump. Turn ignition off and disconnect jumper wire. Wait 5 minutes and observe fuel pressure. Fuel pressure should be at least 21 psi (1.5 kg/cm2 ).
- If fuel pressure is not as specified, check fuel pump hold pressure and fuel pressure regulator hold pressure. See FUEL PUMP HOLD PRESSURE heading below and FUEL PRESSURE REGULATOR HOLD PRESSURE heading below. Also check for injector fuel leakage. See INJECTOR FUEL LEAKAGE heading below.