SEAT HEATER SYSTEM Seat Heater for Rear Left Seat does not Operate

DESCRIPTION

When the rear seat heater switch LH is operated, the rear seat heater LH operates.

WIRING DIAGRAM

A01MGKPE02

CAUTION / NOTICE / HINT

Note

Inspect the fuses and relays for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. INSPECT REAR SEAT HEATER SWITCH LH


    1. Remove the rear seat heater switch LH.

      Click here

    2. Inspect the rear seat heater switch LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SEAT HEATER SWITCH LH Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (REAR SEAT HEATER SWITCH LH - POWER SOURCE AND BODY GROUND)


    1. A01MGATC01
      *a

      Front view of wire harness connector

      (to Rear Seat Heater Switch LH)

      Disconnect the rear seat heater switch LH connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      P33-2 (IG) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P33-6 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (REAR SEAT HEATER SWITCH LH - REAR SEATBACK COVER SUB-ASSEMBLY)


    1. Disconnect the P33 rear seat heater switch LH connector.

    2. Disconnect the Q24 rear seatback cover sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P33-3 (HI) - Q24-8 (HI) Always Below 1 Ω
      P33-3 (HI) - Body ground Always 10 KΩ or higher
      Q24-8 (HI) - Body ground Always 10 KΩ or higher
      P33-1 (LO) - Q24-7 (LO) Always Below 1 Ω
      P33-1 (LO) - Body ground Always 10 KΩ or higher
      Q24-7 (LO) - Body ground Always 10 KΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (REAR SEATBACK COVER SUB-ASSEMBLY - BODY GROUND)


    1. Disconnect the Q24 rear seatback cover sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q24-3 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT REAR SEATBACK COVER SUB-ASSEMBLY


    1. Remove the rear seatback cover sub-assembly.

      Click here

    2. Inspect the rear seatback cover sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    END (REAR SEAT CUSHION COVER SUB-ASSEMBLY LH WAS DEFECTIVE)

    NG

    REPLACE REAR SEATBACK COVER SUB-ASSEMBLY Click here