EFI Main Relay

1996 Toyota Tercel DX, 4D Sedan, AutomaticSECTION EFI Main Relay
NOTE: EFI main relay may also be referred to as EFI relay.
  1. Ensure ignition is off. Remove EFI main relay. See EFI MAIN RELAY LOCATION  table.
    NOTE: The EFI main relay may also be identified using appropriate illustration in THEORY/OPERATION article.
    EFI MAIN RELAY LOCATION

    Application Location
    Tercel In Large Fuse/Relay Box Near Driver's Side Front Corner Of Engine Compartment
  2. To test EFI main relay continuity, using ohmmeter, check continuity between specified terminals. See Fig 1 and Fig 2.
  3. To test EFI main relay operation, apply battery voltage and ground to relay and use ohmmeter to check continuity between specified terminals. See Fig 1 and Fig 2. Replace EFI main relay if defective.
Fig 1: Testing EFI Main Relay - Checking Continuity
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When to See a Mechanic

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

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