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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Seat Heater System - Diagnostic Codes & Symptom Tests (1 Of 2) >> Seat Heater System >> DTC B14C0: Front Right Seat Heat Sensor Circuit [10/2017 - ] >> Procedure

DTC B14C0: Front Right Seat Heat Sensor Circuit [10/2017 - ]: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [10/2017 - ]

      Body Electrical > Air Conditioner > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK FOR DTC 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [10/2017 - ]

      Body Electrical > Air Conditioner > Trouble Codes 

      OK

      DTC B14C0 is not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 09/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2019 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

    Result: 

    NG 

    See step  3

  3. INSPECT SEPARATE TYPE FRONT SEAT CUSHION COVER RH 
    1. Remove the separate type front seat cushion cover RH.

      Refer to REMOVAL [10/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 11/2021] , or refer to REMOVAL [11/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

    2. Inspect the separate type front seat cushion cover RH.

      Refer to INSPECTION [10/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SEPARATE TYPE FRONT SEAT CUSHION COVER RH. Refer to  REMOVAL [10/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION COVER RH) 
    1. Disconnect the G63 and G64 air conditioning amplifier assembly connectors.
    2. Disconnect the Q15 separate type front seat cushion cover RH connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G63-18 (TSR) - Q15-4 Always Below 1 Ω
      G63-18 (TSR) or Q15-4 - Other terminals and body ground Always 10 kΩ or higher
      G64-8 (SG-5) - Q15-5 Always Below 1 Ω
      G64-8 (SG-5) or Q15-5 - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [10/2017 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR