SEAT HEATER SYSTEM, Diagnostic DTC:B14C1

DTC Code DTC Name
B14C1 Front Left Seat Heat Sensor Circuit

DESCRIPTION

Output to the front seat cushion heater 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 No. Detection Item DTC Detection Condition Trouble Area
B14C1 Front Left Seat Heat Sensor Circuit Seat heater temperature sensor malfunction

  • Air conditioning amplifier assembly

  • Front Seat Cushion Heater Assembly LH

  • Wire harness or connector

WIRING DIAGRAM

B0070ORE05
*a Air Conditioning Amplifier Assembly
*b Front Seat Cushion Heater Assembly LH

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.


      Body Electrical > Air Conditioner > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.


      Body Electrical > Air Conditioner > Trouble Codes
      OK
      DTC B14C1 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY LH


    1. Remove the front seat cushion heater assembly LH.

      for Manual Seat: Click here

      for Power Seat: Click here

    2. Inspect the front seat cushion heater assembly LH.

      for Manual Seat: Click here

      for Power Seat: Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT SEAT CUSHION HEATER ASSEMBLY LH for Manual Seat: Click here
    REPLACE FRONT SEAT CUSHION HEATER ASSEMBLY LH for Power Seat: Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - FRONT SEAT CUSHION HEATER ASSEMBLY LH)


    1. Disconnect the b6 front seat cushion heater assembly LH connector.

    2. Disconnect the K55 and K56 air conditioning amplifier assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K56-17 (TSL) - b6-4 Always Below 1 Ω
      K56-17 (TSL) or b6-4 - Body ground Always 10 kΩ or higher
      K55-8 (SG-5) - b6-5 Always Below 1 Ω
      K55-8 (SG-5) or b6-5 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR