SEAT HEATER SYSTEM, Diagnostic DTC:B14C1

DTC Code DTC Name
B14C1 Front Left Seat Heat Sensor Circuit

DESCRIPTION

Output to the front left cushion cover temperature sensor stops if one of the following occurs: 1) the 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
B14C1 Seat heater temperature sensor malfunction

  • Air conditioning amplifier assembly

  • Separate type front seat cushion cover

  • Harness or connector

WIRING DIAGRAM

A000QN1E16
*a Air Conditioning Amplifier Assembly
*b Separate Type Front Seat Cushion Cover

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B14C1 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. INSPECT SEPARATE TYPE FRONT SEAT CUSHION COVER


    1. Remove the separate type front seat cushion cover.


    2. Inspect the separate type front seat cushion cover.


      Result
      Result Proceed to
      OK A
      NG (for Standard Seat Type) B
      NG (for Sports Seat Type) C
      NG (for Luxury Seat Type) D

    B

    REPLACE SEPARATE TYPE FRONT SEAT CUSHION COVER Click here

    C

    REPLACE SEPARATE TYPE FRONT SEAT CUSHION COVER Click here

    D

    REPLACE SEPARATE TYPE FRONT SEAT CUSHION COVER Click here

    A

  4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION COVER)


    1. Disconnect the N157 air conditioning amplifier assembly connector.

    2. Disconnect the d22 separate type front seat cushion cover connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N157-19 (TSL) - d22-1 (THL) Always Below 1 Ω
      N157-35 (SG-4) - d22-7 (PL) Always Below 1 Ω
      N157-19 (TSL) - Body ground Always 10 kΩ or higher
      N157-35 (SG-4) - Body ground Always 10 kΩ or higher

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR