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Home >> Toyota >> 2009 >> RAV4 Base, 2.5 F, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2AR-FE) - Service Information & Circuit Tests >> Integration Relay >> On-Vehicle Inspection
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On-Vehicle Inspection

NOTE:
  • The EFI MAIN and A/F relays are built into the integration relay.
  • 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. REMOVE INTEGRATION RELAY 
    1. Remove the engine room No. 1 relay block cover.
    2. Using a screwdriver, detach the 2 claws and disconnect the integration relay from the engine room No. 1 relay block.

      HINT:

      Tape the screwdriver tip before use.

    3. Disconnect the 3 connectors from the integration relay.
      Fig 1: Disconnecting Integration Relay From Engine Room No. 1 Relay Block
      G05997218Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT INTEGRATION RELAY (EFI MAIN RELAY) 
    1. Measure the resistance of the EFI MAIN fuse.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        TESTER CONNECTION SPECIFIED CONDITION CHART

        Tester Connection Condition Specified Condition
        EFI MAIN fuse Always Below 1 Ω

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

    2. Measure the resistance of the EFI MAIN relay circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        TESTER CONNECTION SPECIFIED CONDITION CHART

        Tester Connection Condition Specified Condition
        1C-1 - 1A-4 Battery voltage is not applied to terminals 1A-3 and 1A-2 10 kΩ or higher
        1C-1 - 1A-4 Battery voltage is applied to terminals 1A-3 and 1A-2 Below 1 Ω

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

        Fig 2: Identifying Integration Relay
        G05997219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT INTEGRATION RELAY (A/F RELAY) 
    1. Measure the resistance of the A/F fuse.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        TESTER CONNECTION SPECIFIED CONDITION CHART

        Tester Connection Condition Specified Condition
        A/F fuse Always Below 1 Ω

        If the result is not as specified, replace the A/F fuse.

    2. Measure the resistance of the A/F relay circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        TESTER CONNECTION SPECIFIED CONDITION CHART

        Tester Connection Condition Specified Condition
        1C-1 - 1B-8 Battery voltage is not applied to terminals 1B-7 and 1B-6 10 kΩ or higher
        1C-1 - 1B-8 Battery voltage is applied to terminals 1B-7 and 1B-6 Below 1 Ω

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

        Fig 3: Identifying Integration Relay
        G05997220Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL INTEGRATION RELAY 
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