RELAY ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT MAIN BODY ECU

    A01X6O3E04
    Text in Illustration
    *a

    Component without harness connected

    (Main Body ECU)

    		 - -

    Note


    • The IG1 No. 1 relay, IG1 No. 2 relay and IG1 No. 3 relay are built into the main body ECU.

    • Before performing the relay inspections for the relays of the main body ECU, inspect the ECU-IG No. 1, ECU-IG No. 2 and ECU-IG No. 3 fuses.


    1. Inspect the IG1 No. 1 relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        2G-1 - 2H-24 Battery voltage is not applied to terminals 2I-18 and 2J-1 10 kΩ or higher
        Battery voltage is applied to terminals 2I-18 and 2J-1 Below 1 Ω

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

    2. Inspect the IG1 No. 2 relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        2G-1 - 2H-14 Battery voltage is not applied to terminals 2I-18 and 2J-1 10 kΩ or higher
        Battery voltage is applied to terminals 2I-18 and 2J-1 Below 1 Ω

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

    3. Inspect the IG1 No. 3 relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        2G-1 - 2H-16 Battery voltage is not applied to terminals 2I-18 and 2J-1 10 kΩ or higher
        Battery voltage is applied to terminals 2I-18 and 2J-1 Below 1 Ω

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

  2. INSPECT AIR INJECTION VSV RELAY (AI-VSV)


    1. A01X91WE13

      Measure the resistance according to the value(s) in the table below.

      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 relay.

  3. INSPECT INTEGRATION RELAY

    A01X5ERE04
    Text in Illustration
    *A for LHD *B for RHD
    *a

    Component without harness connected

    (Integration Relay)

    		 - -

    Note


    • The IG2 MAIN relay, FUEL PMP relay, EFI MAIN No. 1 relay, A/F relay and AIR PMP HTR relay are built into the integration relay.

    • Before performing the relay inspections for the relays of the integration relay, inspect the IG2 MAIN, FUEL PMP, EFI No. 2, EFI MAIN No. 1, A/F HTR and AIR PMP HTR fuses.


    1. Inspect the IG2 MAIN relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        for LHD:
        Tester Connection Condition Specified Condition
        1Y-1 - 1R-1 Battery voltage is not applied to terminals 1R-2 and 1S-4 10 kΩ or higher
        Battery voltage is applied to terminals 1R-2 and 1S-4 Below 1 Ω
        for RHD:
        Tester Connection Condition Specified Condition
        1X-1 - 1R-1 Battery voltage is not applied to terminals 1R-2 and 1S-4 10 kΩ or higher
        Battery voltage is applied to terminals 1R-2 and 1S-4 Below 1 Ω

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

    2. Inspect the FUEL PMP relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        for LHD:
        Tester Connection Condition Specified Condition
        1Y-1 - 1R-6 Battery voltage is not applied to terminals 1R-7 and 1S-12 10 kΩ or higher
        Battery voltage is applied to terminals 1R-7 and 1S-12 Below 1 Ω
        for RHD:
        Tester Connection Condition Specified Condition
        1X-1 - 1R-6 Battery voltage is not applied to terminals 1R-7 and 1S-12 10 kΩ or higher
        Battery voltage is applied to terminals 1R-7 and 1S-12 Below 1 Ω

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

    3. Inspect the EFI MAIN No. 1 relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        for LHD:
        Tester Connection Condition Specified Condition
        1Y-1 - 1S-1 Battery voltage is not applied to terminals 1S-8 and 1S-4 10 kΩ or higher
        Battery voltage is applied to terminals 1S-8 and 1S-4 Below 1 Ω
        for RHD:
        Tester Connection Condition Specified Condition
        1X-1 - 1S-1 Battery voltage is not applied to terminals 1S-8 and 1S-4 10 kΩ or higher
        Battery voltage is applied to terminals 1S-8 and 1S-4 Below 1 Ω

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

    4. Inspect the A/F relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        for LHD:
        Tester Connection Condition Specified Condition
        1Y-1 - 1S-3 Battery voltage is not applied to terminals 1S-1 and 1S-4 10 kΩ or higher
        Battery voltage is applied to terminals 1S-1 and 1S-4 Below 1 Ω
        for RHD:
        Tester Connection Condition Specified Condition
        1X-1 - 1S-3 Battery voltage is not applied to terminals 1S-1 and 1S-4 10 kΩ or higher
        Battery voltage is applied to terminals 1S-1 and 1S-4 Below 1 Ω

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

    5. Inspect the AIR PMP HTR relay.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        for LHD:
        Tester Connection Condition Specified Condition
        1Y-1 - 1P-9 Battery voltage is not applied to terminals 1Y-1 and 1P-10 10 kΩ or higher
        for RHD:
        Tester Connection Condition Specified Condition
        1X-1 - 1P-9 Battery voltage is not applied to terminals 1X-1 and 1P-10 10 kΩ or higher
        Standard Voltage
        for LHD:
        Tester Connection Condition Specified Condition
        1P-9 - Battery negative (-)

        Battery positive (+) → 1Y-1

        Battery negative (-) → 1P-10

        		 11 to 14 V
        for RHD:
        Tester Connection Condition Specified Condition
        1P-9 - Battery negative (-)

        Battery positive (+) → 1X-1

        Battery negative (-) → 1P-10

        		 11 to 14 V

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