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Home >> Lexus >> 1995 >> ES 300 >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Controls - System/Component Tests - 3.0L) >> Relays >> EFI Main Relay

EFI Main Relay

WARNING: This page is about a different car, the 1995 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  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 - 3.0L article or wire color. See wiring diagram in the WIRING DIAGRAMS article.
    EFI MAIN RELAY LOCATION

    Application Location
    Camry Fuse/Relay Box Near Driver's Side Front Corner Of Engine Bay
  2. Using ohmmeter, check continuity between specified terminals. See Fig 1 or Fig 3 .
  3. Check EFI main relay operation by applying battery voltage and ground and checking continuity between specified terminals. See Fig 2 or Fig 4 . Replace EFI main relay if defective.
Fig 1: Testing EFI Main Relay (Checking Continuity - With Bosch Relay)
G95E32643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Testing EFI Main Relay (Checking Operation - With Bosch Relay)
G95F32644Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Testing EFI Main Relay (Checking Continuity - With Nippondenso Relay)
G95F32479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Testing EFI Main Relay (Checking Operation - With Nippondenso Relay)
G95I32480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002