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INTEGRATION RELAY (for Sedan): Inspection: Inspection

  1. INSPECT INTEGRATION NO. 1 RELAY 
    Fig 1: Identifying EFI Fuse
    GTY216596Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Inspect the EFI fuse.
      1. Disconnect the fuse.
        TEXT IN ILLUSTRATION

        *1 Fuse Side
        *2 EFI fuse
      2. Measure the resistance of the fuse.

        Standard Resistance

        Tester Connection Condition Specified Condition
        EFI fuse Always Below 1 Ω
    2. Inspect the EFI relay.
      Fig 2: Identifying IG2 Relay
      GTY290824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.
        TEXT IN ILLUSTRATION

        *1 Component without harness connected
        (Integration Relay)

        Standard Resistance

        Tester Connection Condition Specified Condition
        C1 - A4 Battery voltage not applied 10 kΩ or higher
        Battery voltage applied to terminals A2 and A3 Below 1 Ω
        C1 - A1 Always Below 1 Ω
        NOTE:

        While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

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

    3. Inspect the FAN NO. 1 relay.
      Fig 3: Identifying IG2 Relay
      GTY290824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.
        TEXT IN ILLUSTRATION

        *1 Component without harness connected
        (Integration Relay)

        Standard Resistance

        Tester Connection Condition Resistance
        B5 - B8 Battery voltage not applied 10 kΩ or higher
        Battery voltage applied to terminals B6 and B7 Below 1 Ω
        NOTE:

        While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

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

    4. Inspect the AM2 fuse.
      Fig 4: Identifying AM2 Fuse
      GTY233006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the fuse.
        TEXT IN ILLUSTRATION

        *1 Fuse Side
        *2 AM2 fuse
      2. Measure the resistance of the fuse.

        Standard Resistance

        Tester Connection Condition Specified Condition
        AM2 fuse Always Below 1 Ω
    5. Inspect the IG2 relay.
      Fig 5: Identifying IG2 Relay
      GTY290824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.
        TEXT IN ILLUSTRATION

        *1 Component without harness connected
        (Integration Relay)

        Standard Resistance

        Tester Connection Condition Resistance
        C1 - B4 Battery voltage not applied 10 kΩ or higher
        Battery voltage applied to terminals B2 and B3 Below 1 Ω
        C1 - B1 Always Below 1 Ω

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

    6. Inspect the horn relay.
      Fig 6: Identifying Integration Relay Terminals
      GTY214786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the horn fuse.
      2. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Specified Condition
        A8 - T6 10 kΩ or higher
        Below 1 Ω
        (Battery voltage applied to terminals A7 and T6)

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

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