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On-Vehicle Inspection

  1. INSPECT CIRCUIT OPENING RELAY (C/OPN) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Circuit Opening Relay (C/OPN)
      GTY358974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      Battery voltage is applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the circuit opening relay.

  2. INSPECT NO. 1 INTEGRATION RELAY (IG2) 
    1. Check the IG2 fuse.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        IG2 fuse Always Below 1 Ω

        If the result is not as specified, replace the IG2 fuse.

    2. Check the IG2 relay.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 2: Inspecting Integration Relay (IG2)
        GTY313831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard Resistance

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

        *a Component without harness connected
        (Integration Relay)

        If the result is not as specified, replace the No. 1 integration relay.

  3. INSPECT NO. 1 INTEGRATION RELAY (EFI) 
    1. Check the EFI fuse.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        EFI fuse Always Below 1 Ω

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

    2. Check the EFI relay.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 3: Inspecting Integration Relay (IG2)
        GTY313831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard Resistance

        Tester Connection Condition Specified Condition
        1C-1 - 1B-4 Battery voltage not applied to terminals 1B-2 and 1B-3 10 kΩ or higher
        Battery voltage applied to terminals 1B-2 and 1B-3 Below 1 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Integration Relay)

        If the result is not as specified, replace the No. 1 integration relay.

  4. INSPECT NO. 1 INTEGRATION RELAY (A/F) 
    1. Check the A/F fuse.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        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 according to the value(s) in the table below.
      Fig 4: Inspecting Integration Relay (IG2)
      GTY313831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1C-1 - 1B-8 Battery voltage not applied to terminals 1B-4 and 1B-7 10 kΩ or higher
      Battery voltage applied to terminals 1B-4 and 1B-7 Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Integration Relay)

      If the result is not as specified, replace the No. 1 integration relay.

  5. INSPECT AIR INJECTION VSV RELAY (AI-VSV) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 5: Identifying Circuit Opening Relay (C/OPN)
      GTY358974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      Battery voltage is applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the air injection VSV relay.

  6. INSPECT FUEL PUMP RELAY (FUEL PMP) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 6: Identifying Circuit Opening Relay (C/OPN)
      GTY358974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      Battery voltage is applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the fuel pump relay.

  7. INSPECT STARTER RELAY (ST) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 7: Identifying Circuit Opening Relay (C/OPN)
      GTY358974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      Battery voltage is applied to terminals 1 and 2 Below 1 Ω

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

  8. INSPECT MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) 
    NOTE:

    The ACC relay and IG1 No. 1 relay are built into the main body ECU (driver side junction block).

    1. Inspect the ACC relay.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 8: Identifying Main Body ECU Connector Terminals (Driver Side Junction Block)
        GTY354190Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Main Body ECU)        		 - -

        Standard Resistance

        Tester Connection Condition Specified Condition
        2D-17 - 2K-1 Battery voltage not applied to terminals 2A-48 and 2D-4 10 kΩ or higher
        Battery voltage applied to terminals 2A-48 and 2D-4 Below 1 Ω

        If the result is not as specified, replace the main body ECU.

    2. Inspect the IG1 No. 1 relay.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 9: Identifying Main Body ECU Connector Terminals (Driver Side Junction Block)
        GTY354190Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Main Body ECU)        		 - -

        Standard Resistance

        Tester Connection Condition Specified Condition
        2A-31 - 2K-1 Battery voltage not applied to terminals 2A-52 and 2D-4 10 kΩ or higher
        Battery voltage applied to terminals 2A-52 and 2D-4 Below 1 Ω

        If the result is not as specified, replace the main body ECU.

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