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Integration Relay: Inspection: Inspection

  1. INSPECT INTEGRATION NO. 1 RELAY 
    Fig 1: Measuring Resistance Of Integration Relay Connector
    GTY162444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Inspect the EFI fuse.
      1. Disconnect the fuse.
      2. Using an ohmmeter, measure the resistance of the fuse.

        Standard resistance

        Tester Connection Condition Specified Condition
        EFI fuse Always Below 1 Ω
    2. Inspect the EFI relay.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance

        Tester Connection Condition Specified Condition
        A1 - C1 When battery voltage absent Below 1 Ω
        A1 - A4 When battery voltage absent 10 kΩ or higher
        A4 - C1 When battery voltage absent 10 kΩ or higher
        A1 - A4 Apply battery voltage between terminals A2 and A3 Below 1 Ω
        A4 - C1 Apply battery voltage between terminals A2 and A3 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.

    3. Inspect the cooling fan relay.
      Fig 2: Measuring Resistance Of Cooling Fan Relay Connector
      GTY161427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance

        Tester Connection Condition Resistance
        B5 - B8 When battery voltage absent 10 kΩ or higher
        When 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.

    4. Inspect the IG2 relay.
      Fig 3: Measuring Resistance Of IG2 Relay Connector
      GTY163800Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance

        Tester Connection Condition Resistance
        B1 - B4 When battery voltage absent 10 kΩ or higher
        When battery voltage applied to terminals B2 and B3 Below 1 Ω
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