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

DESCRIPTION

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

WIRING DIAGRAM

A01GIT1E04
A01GIT1E05

INSPECTION PROCEDURE

PROCEDURE


  1. CONFIRM PROBLEM SYMPTOMS

    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

    B

    CHECK SEAT CLIMATE CONTROL ECU Click here

    C

    CHECK SEAT CLIMATE CONTROL ECU Click here

    A

  2. CHECK SEAT CLIMATE CONTROL ECU


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

    2. A01GLNKE02

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

      Standard voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      e4-18 (VSR) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      e34-18 (VSL) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V

    NG

    INSPECT CLIMATE CONTROL SWITCH Click here

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  3. INSPECT CLIMATE CONTROL SWITCH


    1. A01GK1VE04

      Disconnect the L149 switch connector.

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

      Standard resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      13 (V5R) - 12 (VSR) HOT HI to COLD HI Below 1 Ω to 5 kΩ
      for RHD
      Tester Connection Switch Condition Specified Condition
      5 (V5L) - 4 (VSL) HOT HI to COLD HI Below 1 Ω to 5 kΩ

    NG

    REPLACE CLIMATE CONTROL SWITCH Click here

    OK

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

    A01GJ10E05

    1. for LHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the L149 switch connector.

    2. for RHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the L149 switch connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      e4-18 (VSR) - L149-12 (VSR) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      e34-18 (VSL) - L149-4 (VSL) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  5. CHECK SEAT CLIMATE CONTROL ECU


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

    2. A01GLNKE06

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

      Standard voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      e4-18 (VSR) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      e34-18 (VSL) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V

    NG

    INSPECT CLIMATE CONTROL SWITCH Click here

    OK

  6. 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.

      Front Right 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.

      Front Left Seat A/C
      Tester Display Test Part Control Range
      Cool air Cool air operation OFF / ON
      OK
      Cool air operates normally

    NG

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (AIRFLOW) Click here

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  7. INSPECT CLIMATE CONTROL SWITCH


    1. A01GK1VE05

      for LHD:


      1. Disconnect the L149 switch connector.

    2. for RHD:


      1. Disconnect the L149 switch connector.

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

      Standard resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      13 (V5R) - 12 (VSR) HOT HI to COLD HI Below 1 Ω to 5 kΩ
      13 (V5R) - 11 (VGR) Always 5 kΩ
      for RHD
      Tester Connection Switch Condition Specified Condition
      5 (V5L) - 4 (VSL) HOT HI to COLD HI Below 1 Ω to 5 kΩ
      5 (V5L) - 3 (VGL) Always 5 kΩ

    NG

    REPLACE CLIMATE CONTROL SWITCH Click here

    OK

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

    A01GJ10E06

    1. for LHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the L149 switch connector.

    2. for RHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the L149 switch connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      e4-15 (VGR) - L149-12 (VGR) Always Below 1 Ω
      e4-14 (V5R) - e4-18 (VSR) Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      e34-15 (VGL) - L149-3 (VGL) Always Below 1 Ω
      e34-14 (V5L) - e34-18 (VSL) Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  9. 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.

      Front Right 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.

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

    NG

    CHECK SEAT CLIMATE CONTROL ECU Click here

    OK

  10. 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

    NG

    CHECK SEAT CLIMATE CONTROL CONTROLLER (for SEATBACK) Click here

    OK

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

  11. CHECK SEAT CLIMATE CONTROL ECU


    1. A01GHKJE02

      for LHD:


      1. Disconnect the e1 blower connector.

    2. for RHD:


      1. Disconnect the e32 blower connector.

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

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

    NG

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

    OK

    REPLACE SEAT CLIMATE CONTROL BLOWER Click here

  12. 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

    NG

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

    OK

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

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


    1. A01GNYZE04

      for LHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the e1 blower connector.

    2. for RHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the e32 blower connector.

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

      Standard resistance
      for LHD
      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
      for RHD
      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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

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


    1. A01GIXWE06

      for LHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the e2 and e21 controller connectors.

    2. for RHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the e33 and e51 controller connectors.

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

      Standard resistance
      for LHD
      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
      for RHD
      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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  15. CHECK SEAT CLIMATE CONTROL ECU


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

    2. A01GLNKE07

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

      Standard voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      e4-18 (VSR) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      e34-18 (VSL) - Body ground

      Climate Control Switch

      COLD HI to HOT HI

      		 Below 1 to 5 V

    NG

    INSPECT CLIMATE CONTROL SWITCH Click here

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

  16. INSPECT CLIMATE CONTROL SWITCH


    1. A01GK1VE07

      for LHD:


      1. Disconnect the L149 switch connector.

    2. for RHD:


      1. Disconnect the L149 switch connector.

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

      Standard resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      13 (V5R) - 12 (VSR) HOT HI to COLD HI Below 1 Ω to 5 kΩ
      for RHD
      Tester Connection Switch Condition Specified Condition
      5 (V5L) - 4 (VSL) HOT HI to COLD HI Below 1 Ω to 5 kΩ

    NG

    REPLACE CLIMATE CONTROL SWITCH Click here

    OK

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

    A01GJ10E07

    1. for LHD:


      1. Disconnect the e4 ECU connector.

      2. Disconnect the L149 switch connector.

    2. for RHD:


      1. Disconnect the e34 ECU connector.

      2. Disconnect the L149 switch connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      e4-14 (V5R) - L149-13 (V5R) Always Below 1 Ω
      e4-18 (VSR) - L149-12 (VSR) Always Below 1 Ω
      e4-15 (VGR) - L149-11 (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
      for RHD
      Tester Connection Condition Specified Condition
      e34-14 (V5L) - L149-5 (V5L) Always Below 1 Ω
      e34-18 (VSL) - L149-4 (VSL) Always Below 1 Ω
      e34-15 (VGL) - L149-3 (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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  18. INSPECT FRONT SEAT CUSHION COVER


    1. Remove the front seat cushion cover Click here.

    2. Inspect the front seat cushion cover Click here.


    NG

    REPLACE FRONT SEAT CUSHION COVER Click here

    OK

  19. INSPECT FRONT SEATBACK COVER


    1. Remove the front seatback cover Click here.

    2. Inspect the front seatback cover Click here.


    NG

    REPLACE FRONT SEATBACK COVER Click here

    OK

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

    A01GLP5E02

    1. for LHD:


      1. Disconnect the e106 ECU connector.

      2. Disconnect the e108 cushion cover connector.

    2. for RHD:


      1. Disconnect the e115 ECU connector.

      2. Disconnect the e116 cushion cover connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      e106-1 (AMP) - e108-4 (SWR) Always Below 1 Ω
      e106-1 (AMP) - Body ground Always 10 kΩ or higher
      e108-3 (E) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      e115-1 (AMP) - e116-4 (SWL) Always Below 1 Ω
      e115-1 (AMP) - Body ground Always 10 kΩ or higher
      e116-3 (E) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here