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Home >> Lexus >> 1997 >> LX 450 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Relays >> EFI Main Relay
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EFI Main Relay

  1. Ensure ignition is off. Remove EFI main relay from fuse/relay box at driver's side front corner of engine compartment, near the battery.
  2. To test EFI main relay continuity, use ohmmeter to check continuity between specified terminals. See Figure.
  3. To test EFI main relay operation, apply battery voltage and ground to specified terminals on EFI main relay and use ohmmeter to check continuity between specified terminals. See Figure. Replace EFI main relay if defective.
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