CLIMATE CONTROL SEAT SYSTEM, Diagnostic DTC:B14F0

DTC Code DTC Name
B14F0 Cushion Peltier Temperature Sensor Malfunction

DESCRIPTION

Output from the seat climate control controller stops if one of the following occurs: 1) the seat climate control controller's temperature sensor is open or shorted; or 2) the temperature sensor is damaged and its output value does not change.

DTC Code DTC Detection Condition Trouble Area
B14F0 Cushion Peltier Temperature Sensor Malfunction

  • Seat climate control controller

  • Seat climate control ECU

  • Harness or connector

WIRING DIAGRAM

A000XEQE21
A000TB6E03

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is output (Front seat climate control ECU LH) A
      DTC is output (Front seat climate control ECU RH) B
      DTC is output (Rear seat climate control ECU LH) C
      DTC is output (Rear seat climate control ECU RH) D

    B

    READ VALUE USING INTELLIGENT TESTER (SEAT CUSHION TEMPERATURE SENSOR) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (SEAT CUSHION TEMPERATURE SENSOR) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (SEAT CUSHION TEMPERATURE SENSOR) Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (SEAT CUSHION TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Front Left Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Cushion Temp Seat cushion temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

  3. INSPECT SEAT CLIMATE CONTROL CONTROLLER LH

    A000VGTE09
    *1 Component without harness connected: (Seat Climate Control Controller LH)
    *2 TCS

    1. Disconnect the e33 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TC5) - 4 (TCS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ

    NG

    REPLACE SEAT CLIMATE CONTROL CONTROLLER LH Click here

    OK

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

    A000YKKE02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 TCS
    *3 Front view of wire harness connector: (to Seat Climate Control Controller LH)

    1. Disconnect the e34 ECU connector.

    2. Disconnect the e33 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      e34-19 (TC5) - e33-3 (TC5) Always Below 1 Ω
      e34-16 (TCS) - e33-4 (TCS) Always Below 1 Ω
      e34-19 (TC5) - Body ground Always 10 kΩ or higher
      e34-16 (TCS) - Body ground Always 10 kΩ or higher

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. READ VALUE USING INTELLIGENT TESTER (SEAT CUSHION TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Front Right Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Cushion Temp Seat cushion temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

  6. INSPECT SEAT CLIMATE CONTROL CONTROLLER RH

    A000VGTE10
    *1 Component without harness connected: (Seat Climate Control Controller RH)
    *2 TCS

    1. Disconnect the e2 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TC5) - 4 (TCS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ

    NG

    REPLACE SEAT CLIMATE CONTROL CONTROLLER RH Click here

    OK

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

    A000UA4E02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 TCS
    *3 Front view of wire harness connector: (to Seat Climate Control Controller RH)

    1. Disconnect the e4 ECU connector.

    2. Disconnect the e2 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      e4-19 (TC5) - e2-3 (TC5) Always Below 1 Ω
      e4-16 (TCS) - e2-4 (TCS) Always Below 1 Ω
      e4-19 (TC5) - Body ground Always 10 kΩ or higher
      e4-16 (TCS) - Body ground Always 10 kΩ or higher

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. READ VALUE USING INTELLIGENT TESTER (SEAT CUSHION TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Rear Left Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Cushion Temp Seat cushion temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.
      Result
      Result Proceed to
      NG A
      OK (except Ottoman) B
      OK (for Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  9. INSPECT REAR SEAT CLIMATE CONTROL CONTROLLER LH

    A000VGTE11
    *1 Component without harness connected: (Rear Seat Climate Control Controller LH)
    *2 TCS

    1. Disconnect the z65 climate control controller LH connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TC5) - 4 (TCS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ
      Result
      Result Proceed to
      OK A
      NG (except Ottoman) B
      NG (for Ottoman) C

    B

    REPLACE REAR SEAT CLIMATE CONTROL CONTROLLER LH Click here

    C

    REPLACE REAR SEAT CLIMATE CONTROL CONTROLLER LH Click here

    A

  10. CHECK HARNESS AND CONNECTOR (HEATER BLOWER WIRE)

    A000TEQE02
    *1 Front view of wire harness connector: (to Rear Seat Wire LH)
    *2 TCS
    *3 Front view of wire harness connector: (to Rear Seat Climate Control Controller LH)

    1. Disconnect the fz2 joining connector.

    2. Disconnect the z65 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      fz2-3 (TC5) - z65-3 (TC5) Always Below 1 Ω
      fz2-4 (TCS) - z65-4 (TCS) Always Below 1 Ω
      fz2-3 (TC5) - Body ground Always 10 kΩ or higher
      fz2-4 (TCS) - Body ground Always 10 kΩ or higher

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SEAT CLIMATE CONTROL ECU - JOINING CONNECTOR)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATER BLOWER WIRE)

  11. READ VALUE USING INTELLIGENT TESTER (SEAT CUSHION TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Rear Right Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Cushion Temp Seat cushion temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.
      Result
      Result Proceed to
      NG A
      OK (except Ottoman) B
      OK (for Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  12. INSPECT REAR SEAT CLIMATE CONTROL CONTROLLER RH

    A000VGTE12
    *1 Component without harness connected: (Rear Seat Climate Control Controller RH)
    *2 TCS

    1. Disconnect the z63 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TC5) - 4 (TCS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ
      Result
      Result Proceed to
      OK A
      NG (except Ottoman) B
      NG (for Ottoman) C

    B

    REPLACE REAR SEAT CLIMATE CONTROL CONTROLLER RH Click here

    C

    REPLACE REAR SEAT CLIMATE CONTROL CONTROLLER RH Click here

    A

  13. CHECK HARNESS AND CONNECTOR (HEATER BLOWER WIRE)

    A000YY5E02
    *1 Front view of wire harness connector: (to Rear Seat Wire RH)
    *2 TCS
    *3 Front view of wire harness connector: (to Rear Seat Climate Control Controller RH)

    1. Disconnect the fz1 joining connector.

    2. Disconnect the z63 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      fz1-3 (TC5) - z63-3 (TC5) Always Below 1 Ω
      fz1-4 (TCS) - z63-4 (TCS) Always Below 1 Ω
      fz1-3 (TC5) - Body ground Always 10 kΩ or higher
      fz1-4 (TCS) - Body ground Always 10 kΩ or higher

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SEAT CLIMATE CONTROL ECU - JOINING CONNECTOR)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATER BLOWER WIRE)