Fuel Pump Relay By-Pass Procedure
- If the fuel pump will not energize, the relay may be by-passed to test the fuel pump and its related wiring. See Fig 1
. Turn ignition off. Disconnect fuel pump relay connector. Using a fused jumper wire, apply battery voltage to the fuel pump test connector (located in in the engine compartment). For fuel pump test connector location, refer to COMPONENT LOCATIONS
at end of this article. Also, see Figure
& 9
- If fuel pump runs and relay tests okay, check for faulty connections at relay. If fuel pump does not run, check for faulty wiring between relay and fuel pump or replace defective fuel pump.
Courtesy of GENERAL MOTORS CORP.