Fuel Pump Relay By-Pass Procedure

1992 Saturn SL1 StandardSECTION Fuel Pump Relay By-Pass Procedure
  1. 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 LOCATIONSΒ  at end of this article. Also, see Figure & 9
  2. 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.
Fig 1: Typical Fuel Pump Relay Schematic
G90D13212Courtesy of GENERAL MOTORS CORP.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.