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HOMESERVICE MANUALSTOYOTA2008RAV4 LIMITED, 2.4 D, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEM (2AZ-FE)INTEGRATION RELAYON-VEHICLE INSPECTION
2008 Toyota RAV4 Limited, 2.4 D, FWD

On-Vehicle Inspection

2008 Toyota RAV4 Limited, 2.4 D, FWDSECTION On-Vehicle Inspection
  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
  2. INSPECT INTEGRATION RELAY 
    NOTE:
    • The EFI relay is built into the integration relay (unit A: EFI MAIN).
    • Some relays are built into the integration relay. The integration relay cannot be disassembled. If there is a malfunction in the circuit of the integration relay, replace the integration relay.
    1. Using a screwdriver, detach the 2 claws and disconnect the integration relay from the No. 1 engine room junction block.

      HINT:

      Tape the screwdriver tip before use.

      Fig 1: Identifying Integration Relay From Engine Room Junction Block
      G05183855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 3 connectors from the integration relay.
    3. Inspect the EFI relay.
      1. Check the resistance of the EFI MAIN fuse.

        If the result is not as specified, replace the EFI MAIN fuse.

      2. Measure the resistance of the integration relay.

        Standard resistance 

        RESISTANCE SPECIFICATION

        Tester Connection Specified Condition
        1A-4 - 1C-1 10 kΩ or higher
        1A-4 - 1A-1
        1A-4 - 1C-1 Below 1 Ω (when battery voltage is applied to terminals 1A-3 and 1A-2)
        1A-4 - 1A-1
        Fig 2: Identifying Integration Relay Terminals
        G05183856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        If the result is not as specified, replace the integration relay.

  3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
RENDER: 1.0x

NO RELATED

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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.