Fuel Pump Relay

See FUEL PUMP RELAY  under MODULES, MOTORS, RELAYS & SOLENOIDS.

1. 1) System Integrity Check
   
   Perform the following checks:
   • Visually inspect fuel system (fuel lines, filter, pump, injectors, pressure regulator, etc.).
   • Ensure Inertia Fuel Shutoff (IFS) switch reset button is not in upper (tripped) position.
   • Ensure battery is fully charged and fuel-related fuses are okay.
   • Check fuel tank contents and fuel gauge accuracy. On vehicles with 2 fuel tanks, check both tanks. If any fault is detected, repair as necessary. If system checks are okay, go to next step.
2. 2) Check Fuel Pressure
   
   Install fuel pressure gauge. Check and record fuel pressure. For 1995 fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. For 1996 fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. If fuel pressure is as specified, testing is complete. If fuel pressure is not as specified, proceed as follows:

   • For Natural Gas Vehicles
     
     Go to CIRCUIT TEST HB, step 1)  under CIRCUIT TESTS in appropriate G - TEST W/CODES article.
   • For Models Except Natural Gas Vehicles
     
     Go to CIRCUIT TEST HC, step 1)  under CIRCUIT TESTS in appropriate G - TEST W/CODES article.