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CLIMATE CONTROL SEAT SYSTEM Climate Control System does not Operate on Driver Side

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DTC Code DTC Name
  Climate Control System does not Operate on Driver Side
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DESCRIPTION

When the seat climate switch is operated, the seat climate control ECU receives the signal and operates the air seat.

A01GYIKE08
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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    CONFIRM PROBLEM SYMPTOMS

    Table 1. Result
    Result Proceed to
    Air conditioner and heater do not operate A
    Heater is normal and air conditioner does not operate B
    Air conditioner is normal and heater does not operate C

  2. Click here

    CHECK SEAT CLIMATE CONTROL ECU


    1. Remove the seat climate control ECU with its connectors still connected.

    2. A01GZUYE03

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

      Standard voltage
      Table 2. for LHD
      Tester Connection Switch Condition Specified Condition
      e34-18 (VSL) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V
      Table 3. for RHD
      Tester Connection Switch Condition Specified Condition
      e4-18 (VSR) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V

  3. Click here

    INSPECT CLIMATE CONTROL SWITCH


    1. Disconnect the L167 switch connector.

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

      Standard resistance
      Table 4. for LHD
      Tester Connection Switch Condition Specified Condition
      5 (V5L) - 4 (VSL)

      Climate Control Switch

      HOT HI to COLD HI

      		 Below 1 Ω to 5 kΩ
      Table 5. for RHD
      Tester Connection Switch Condition Specified Condition
      13 (V5R) - 12 (VSR)

      Climate Control Switch

      HOT HI to COLD HI

      		 Below 1 Ω to 5 kΩ

  4. Click here

    CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - CLIMATE CONTROL SWITCH)


    1. for LHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the L167 switch connector.

    2. for RHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the L167 switch connector.

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

      Standard resistance
      Table 6. for LHD
      Tester Connection Condition Specified Condition
      e34-18 (VSL) - L167-4 (VSL) Always Below 1 Ω
      Table 7. for RHD
      Tester Connection Condition Specified Condition
      e4-18 (VSR) - L167-12 (VSR) Always Below 1 Ω

  5. Click here

    CHECK SEAT CLIMATE CONTROL ECU


    1. Remove the seat climate control ECU with its connectors still connected.

    2. A01GZUYE04

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

      Standard voltage
      Table 8. for LHD
      Tester Connection Switch Condition Specified Condition
      e34-18 (VSL) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V
      Table 9. for RHD
      Tester Connection Switch Condition Specified Condition
      e4-18 (VSR) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V

  6. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (COOL AIR)


    1. for LHD:

      Select the Active Test, use the intelligent tester to generate a control command, and then check the climate control seat function (Click here).

      Table 10. Front Left Seat A/C
      Tester Display Test Part Control Range
      Cool air Cool air operation OFF / ON

    2. for RHD:

      Select the Active Test, use the intelligent tester to generate a control command, and then check the climate control seat function (Click here).

      Table 11. Front Right Seat A/C
      Tester Display Test Part Control Range
      Cool air Cool air operation OFF / ON
      OK
      Cool air operates normally

  7. Click here

    INSPECT CLIMATE CONTROL SWITCH


    1. A01GWTAE02

      Disconnect the L167 switch connector.

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

      Standard resistance
      Table 12. for LHD
      Tester Connection Condition Specified Condition
      5 (V5L) - 4 (VSL)

      Climate Control Switch

      HOT HI to COLD HI

      		 Below 1 Ω to 5 kΩ
      5 (V5L) - 3 (VGL) Always 5 kΩ
      Table 13. for RHD
      Tester Connection Condition Specified Condition
      13 (V5R) - 11 (VGR)

      Climate Control Switch

      HOT HI to COLD HI

      		 Below 1 Ω to 5 kΩ
      13 (V5R) - 12 (VSR) Always 5 kΩ

  8. Click here

    CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - CLIMATE CONTROL SWITCH)


    1. for LHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the L167 switch connector.

    2. for RHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the L167 switch connector.

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

      Standard resistance
      Table 14. for LHD
      Tester Connection Condition Specified Condition
      e34-15 (VGL) - L167-3 (VGL) Always Below 1 Ω
      e34-14 (V5L) - e34-18 (VSL) Always 10 kΩ or higher
      Table 15. for RHD
      Tester Connection Condition Specified Condition
      e4-15 (VGR) - L167-11 (VGR) Always Below 1 Ω
      e4-14 (V5R) - e4-18 (VSR) Always 10 kΩ or higher

  9. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (AIRFLOW)


    1. for LHD:

      Select the Active Test, use the intelligent tester to generate a control command, and then check the blower motor function (Click here).

      Table 16. Front Left Seat A/C
      Tester Display Test Part Control Range
      Airflow Airflow operation OFF / Low / High

    2. for RHD:

      Select the Active Test, use the intelligent tester to generate a control command, and then check the blower motor function (Click here).

      Table 17. Front Right Seat A/C
      Tester Display Test Part Control Range
      Airflow Airflow operation OFF / Low / High
      OK
      Blower motor operates normally

  10. Click here

    CHECK SEAT CLIMATE CONTROL CONTROLLER (for SEAT CUSHION)


    1. Replace the seat climate control controller (for Seat Cushion) (Click here).

    2. Check the climate control seat function is normal.

      OK
      Climate control seat function is normal

  11. Click here

    CHECK SEAT CLIMATE CONTROL ECU


    1. A01H1IEE01

      for LHD:


      1. Disconnect the e32 blower connector.

    2. for RHD:


      1. Disconnect the e1 blower connector.

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

      Standard voltage
      Table 18. for LHD
      Tester Connection Switch Condition Specified Condition
      e32-2 (BFC+) - e32-4 (BFC-) Power switch off → on (IG) Below 1 V → 11 to 14 V
      Table 19. for RHD
      Tester Connection Switch Condition Specified Condition
      e1-2 (BFC+) - e1-4 (BFC-) Power switch off → on (IG) Below 1 V → 11 to 14 V

  12. Click here

    CHECK SEAT CLIMATE CONTROL CONTROLLER (for SEATBACK)


    1. Replace the seat climate control controller (for Seatback) (Click here).

    2. Check the climate control seat function is normal.

      OK
      Climate control seat function is normal

  13. Click here

    CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE CONTROL BLOWER)


    1. A01GZCLE03

      for LHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the e32 blower connector.

    2. for RHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the e1 blower connector.

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

      Standard resistance
      Table 20. for LHD
      Tester Connection Condition Specified Condition
      e34-4 (BFC+) - e32-2 (BFC+) Always Below 1 Ω
      e34-6 (BFC-) - e32-4 (BFC-) Always Below 1 Ω
      e34-5 (BCS) - e32-3 (BCS) Always Below 1 Ω
      e34-4 (BFC+) - Body ground Always 10 kΩ or higher
      e34-6 (BFC-) - Body ground Always 10 kΩ or higher
      e34-5 (BCS) - Body ground Always 10 kΩ or higher
      e34-4 (BFC+) - e34-6 (BFC-) Always 10 kΩ or higher
      e34-5 (BCS) - e34-4 (BFC+) Always 10 kΩ or higher
      e34-5 (BCS) - e34-6 (BFC-) Always 10 kΩ or higher
      Table 21. for RHD
      Tester Connection Condition Specified Condition
      e4-4 (BFC+) - e1-2 (BFC+) Always Below 1 Ω
      e4-6 (BFC-) - e1-4 (BFC-) Always Below 1 Ω
      e4-5 (BCS) - e1-3 (BCS) Always Below 1 Ω
      e4-4 (BFC+) - Body ground Always 10 kΩ or higher
      e4-6 (BFC-) - Body ground Always 10 kΩ or higher
      e4-5 (BCS) - Body ground Always 10 kΩ or higher
      e4-4 (BFC+) - e4-6 (BFC-) Always 10 kΩ or higher
      e4-5 (BCS) - e4-4 (BFC+) Always 10 kΩ or higher
      e4-5 (BCS) - e4-6 (BFC-) Always 10 kΩ or higher

  14. Click here

    CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE CONTROL CONTROLLER)


    1. A01GX3UE05

      for LHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the e33 and e51 controller connectors.

    2. for RHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the e2 and e21 controller connectors.

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

      Standard resistance
      Table 22. for LHD
      Tester Connection Condition Specified Condition
      e34-8 (TDC+) - e33-1 (TDC+) Always Below 1 Ω
      e34-7 (TDC-) - e51-2 (TDB-) Always Below 1 Ω
      e33-2 (TDC-) - e51-1 (TDB+) Always Below 1 Ω
      e34-8 (TDC+) - Body ground Always 10 kΩ or higher
      e34-7 (TDC-) - Body ground Always 10 kΩ or higher
      e33-2 (TDC-) - Body ground Always 10 kΩ or higher
      Table 23. for RHD
      Tester Connection Condition Specified Condition
      e4-8 (TDC+) - e2-1 (TDC+) Always Below 1 Ω
      e4-7 (TDC-) - e21-2 (TDB-) Always Below 1 Ω
      e2-2 (TDC-) - e21-1 (TDB+) Always Below 1 Ω
      e4-8 (TDC+) - Body ground Always 10 kΩ or higher
      e4-7 (TDC-) - Body ground Always 10 kΩ or higher
      e2-2 (TDC-) - Body ground Always 10 kΩ or higher

  15. Click here

    CHECK SEAT CLIMATE CONTROL ECU


    1. Remove the seat climate control ECU with its connectors still connected.

    2. A01GZUYE05

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

      Standard voltage
      Table 24. for LHD
      Tester Connection Switch Condition Specified Condition
      e34-18 (VSL) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V
      Table 25. for RHD
      Tester Connection Switch Condition Specified Condition
      e4-18 (VSR) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V

  16. Click here

    INSPECT CLIMATE CONTROL SWITCH


    1. Disconnect the L167 switch connector.

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

      Standard resistance
      Table 26. for LHD
      Tester Connection Switch Condition Specified Condition
      5 (V5L) - 4 (VSL)

      Climate Control Switch

      HOT HI to COLD HI

      		 Below 1 Ω to 5 kΩ
      Table 27. for RHD
      Tester Connection

      Climate Control Switch

      Switch Condition

      		 Specified Condition
      13 (V5R) - 12 (VSR) HOT HI to COLD HI Below 1 Ω to 5 kΩ

  17. Click here

    CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - CLIMATE CONTROL SWITCH)


    1. for LHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the L167 switch connector.

    2. for RHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the L167 switch connector.

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

      Standard resistance
      Table 28. for LHD
      Tester Connection Condition Specified Condition
      e34-14 (V5L) - L167-5 (V5L) Always Below 1 Ω
      e34-18 (VSL) - L167-4 (VSL) Always Below 1 Ω
      e34-15 (VGL) - L167-3 (VGL) Always Below 1 Ω
      e34-14 (V5L) - Body ground Always 10 kΩ or higher
      e34-18 (VSL) - Body ground Always 10 kΩ or higher
      e34-15 (VGL) - Body ground Always 10 kΩ or higher
      Table 29. for RHD
      Tester Connection Condition Specified Condition
      e4-14 (V5R) - L167-13 (V5R) Always Below 1 Ω
      e4-18 (VSR) - L167-12 (VSR) Always Below 1 Ω
      e4-15 (VGR) - L167-11 (VGR) Always Below 1 Ω
      e4-14 (V5R) - Body ground Always 10 kΩ or higher
      e4-18 (VSR) - Body ground Always 10 kΩ or higher
      e4-15 (VGR) - Body ground Always 10 kΩ or higher

  18. Click here

    INSPECT FRONT SEAT CUSHION COVER


    1. Remove the front seat cushion cover (Click here).

    2. Inspect the front seat cushion cover (Click here).


  19. Click here

    INSPECT FRONT SEATBACK COVER


    1. Remove the front seatback cover (Click here).

    2. Inspect the front seatback cover (Click here).


  20. Click here

    CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - FRONT SEAT CUSHION COVER)


    1. for LHD:


      1. Disconnect the e116 ECU connector.

      2. Disconnect the e115 cushion cover connector.

    2. for RHD:


      1. Disconnect the e105 ECU connector.

      2. Disconnect the e107 cushion cover connector.

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

      Standard resistance
      Table 30. for LHD
      Tester Connection Condition Specified Condition
      e116-1 (AMP) - e115-4 (SWL) Always Below 1 Ω
      e116-1 (AMP) - Body ground Always 10 kΩ or higher
      e115-3 (E) - Body ground Always 10 kΩ or higher
      Table 31. for RHD
      Tester Connection Condition Specified Condition
      e105-1 (AMP) - e107-4 (SWR) Always Below 1 Ω
      e105-1 (AMP) - Body ground Always 10 kΩ or higher
      e107-3 (E) - Body ground Always 10 kΩ or higher

  21. Click here

    REPLACE SEAT CLIMATE CONTROL ECUClick here

  22. Click here

    REPLACE CLIMATE CONTROL SWITCHClick here

  23. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  24. Click here

    END (SEAT CLIMATE CONTROL CONTROLLER [for SEAT CUSHION] WAS DEFECTIVE)

  25. Click here

    REPLACE SEAT CLIMATE CONTROL BLOWERClick here

  26. Click here

    END (SEAT CLIMATE CONTROL CONTROLLER [for SEATBACK] WAS DEFECTIVE)

  27. Click here

    REPLACE FRONT SEAT CUSHION COVERClick here

  28. Click here

    REPLACE FRONT SEATBACK COVERClick here