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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.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      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
      Fig 1: Inspecting Circuit Opening Relay (C/OPN)
      G05628298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  2. INSPECT INTEGRATION RELAY (IG2) 
    1. Measure the resistance of the IG2 MAIN fuse.
      1. Remove the IG2 MAIN fuse from the integration relay.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        STANDARD RESISTANCE SPECIFICATION

        Tester Connection Condition Specified Condition
        IG2 MAIN fuse Always Below 1 Ω

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

      3. Install the IG2 MAIN fuse to the integration relay.
    2. Measure the resistance of the ignition relay No. 2 (IG2) circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        STANDARD RESISTANCE SPECIFICATION

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

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

        Fig 2: Identifying Integration Relay
        G05628299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT INTEGRATION RELAY (EFI) 
    1. Measure the resistance of the EFI MAIN fuse.
      1. Remove the EFI MAIN fuse from the integration relay
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        STANDARD RESISTANCE SPECIFICATION

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

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

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

        Standard Resistance 

        STANDARD RESISTANCE SPECIFICATION

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

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

        Fig 3: Identifying Integration Relay
        G05628299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT EFI NO. 2 RELAY 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      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 relay.

      Fig 4: Inspecting EFI NO. 2 Relay
      G05628298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT INTEGRATION RELAY (A/F) 
    1. Measure the resistance of the A/F fuse.
      1. Remove the A/F fuse from the integration relay.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        STANDARD RESISTANCE SPECIFICATION

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

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

      3. Install the A/F fuse to the integration relay.
    2. Measure the resistance of the A/F sensor heater relay circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        STANDARD RESISTANCE SPECIFICATION

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

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

        Fig 5: Identifying Integration Relay
        G05628302Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT MAIN BODY ECU (IG1 NO. 1) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 6: Identifying Main Body ECU Connector
      G05628303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      2A-1 - 2B-17 Battery voltage is not applied to terminals 2B-5 and 2D-43 10 kΩ or higher
      Battery voltage is applied to terminals 2B-5 and 2D-43 Below 1 Ω

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

  7. INSPECT STARTER RELAY (ST)  (See ON-VEHICLE INSPECTION )
  8. INSPECT STARTER CUT RELAY (ST CUT)  (See ON-VEHICLE INSPECTION )
  9. INSPECT MAIN BODY ECU (ACC RELAY)  (See ON-VEHICLE INSPECTION )
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