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SEAT HEATER SYSTEM Seat Heater for Front Right Seat does not Operate

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DTC Code DTC Name
  Seat Heater for Front Right Seat does not Operate
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DESCRIPTION

When the refreshing seat switch is operated, the air conditioning amplifier assembly receives the signal. The air conditioning amplifier assembly receives the signal and operates the front seat heater.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • If the battery voltage is low, the seat heater system may not operate. When "Operation of Electrical Items Restricted." is displayed on the multi-information display in the combination meter assembly, inspect the battery, referring to On-vehicle Inspection for the charging system.

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  • If the battery voltage is low, the seat heater system may not operate. When "Operation of Electrical Items Restricted." is not displayed on the multi-information display in the combination meter assembly, check the Data List item "Battery Control Count (Body ECU)".

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  • Inspect the fuses for circuits related to this system before performing the following procedure.

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PROCEDURE


  1. Click here

    CLEAR DTC


    1. Clear the DTCs.

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      1. Body Electrical > Air Conditioner > Clear DTCs


      Result
      Proceed to
      NEXT

  2. Click here

    CHECK FOR DTC


    1. Check for DTCs.

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      1. Body Electrical > Air Conditioner > Trouble Codes


      OK
      DTC B14B5, B14C0 or B14C1 is not output.
      Result
      Proceed to
      OK
      NG

  3. Click here

    CHECK HARNESS AND CONNECTOR (IG POWER SUPPLY - FRONT SEAT CUSHION PAD WITH COVER RH - BODY GROUND)


    1. A01FOSFC08
      *a

      Front view of wire harness connector

      (to Front Seat Cushion Pad with Cover RH)

      Disconnect the a6 front seat cushion pad with cover RH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      a6-2 (B1R) - Body ground Engine switch on (IG) 11 to 14 V
      a6-2 (B1R) - Body ground Engine switch off Below 1 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      a6-3 (ER) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    INSPECT FRONT SEAT CUSHION PAD WITH COVER RH


    1. Remove the front seat cushion pad with cover RH.

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    2. Inspect the front seat cushion pad with cover RH.

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      Result
      Proceed to
      OK
      NG

  5. Click here

    INSPECT FRONT SEATBACK PAD WITH COVER RH


    1. Remove the front seatback pad with cover RH.

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    2. Inspect the front seatback pad with cover RH.

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      Result
      Proceed to
      OK
      NG

  6. Click here

    CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - FRONT SEAT CUSHION PAD WITH COVER RH)


    1. Disconnect the O10 and O9 air conditioning amplifier assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O9-15 (SHP+) - a6-5 (SWR) Always Below 1 Ω
      O9-15 (SHP+) or a6-5 (SWR) - Body ground Always 10 kΩ or higher
      O10-20 (TSR) - a6-1 (THR) Always Below 1 Ω
      O10-20 (TSR) or a6-1 (THR) - Body ground Always 10 kΩ or higher
      O10-34 (SG-3) - a6-7 (PR) Always Below 1 Ω
      O10-34 (SG-3) or a6-7 (PR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    REPLACE SEAT HEATER CONTROL SUB-ASSEMBLY RH


    1. Temporarily replace the seat heater control sub-assembly RH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

  8. Click here

    CHECK SEAT HEATER OPERATION


    1. Check the seat heater.

      Click here

      OK
      The seat heater operates normally.
      Result
      Proceed to
      OK
      NG

    • OK

      END (SEAT HEATER CONTROL SUB-ASSEMBLY RH WAS DEFECTIVE)

    • NGClick here
  9. Click here

    REPLACE REFRESHING SEAT SWITCH


    1. Temporarily replace the refreshing seat switch with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

  10. Click here

    CHECK SEAT HEATER OPERATION


    1. Check the seat heater.

      Click here

      OK
      The seat heater operates normally.
      Result
      Proceed to
      OK
      NG

    • OK

      END (REFRESHING SEAT SWITCH WAS DEFECTIVE)

    • NG

      REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLYClick here