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EFI Main Relay

  1. Ensure ignition is off. Remove EFI main relay from relay box at driver's side front corner of engine compartment, near battery.
  2. To test EFI main relay continuity, use ohmmeter to check for continuity and no continuity between specified terminals on EFI main relay. See Fig 1.
  3. To test EFI main relay operation, apply battery voltage and ground to EFI relay and use ohmmeter to check continuity between specified terminals on EFI main relay. See Fig 1. Replace EFI main relay if defective.
Fig 1: Testing EFI Main Relay
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