LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 1997 >> 4Runner Base, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 2.7L >> Relays >> EFI Main Relay
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 - 2.7L article.
    EFI MAIN RELAY LOCATION

    Application Location
    2.7L In Fuse/Relay Box Near Driver's Side Front Corner Of Engine Compartment, Just Behind The Battery
  2. To check EFI main relay continuity, use ohmmeter to check continuity between specified terminals. See Figure.
  3. To check EFI main relay operation, apply battery voltage and ground to relay and use ohmmeter to check continuity between specified terminals. See Figure. Replace EFI main relay if defective.
scientia non olet · About LEMON Manuals