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Seat Heater for Front Right Seat does not Operate [06/2015 - ]: Procedure

  1. CHECK HEATER AND AIR CONDITIONER OPERATION 
    1. Check air conditioning system operation.

      OK

      Air conditioning system is normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO HEATER AND AIR CONDITIONER SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - ] 

    Result: 

    OK 

    See step  2

  2. INSPECT S/HTR HI RH RELAY AND HEATER RELAY NO. 1 
    1. S/HTR HI RH relay
      GTY552097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (S/HTR HI RH Relay)
      1. Remove the S/HTR HI RH relay from the No. 3 relay box.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        3-5 Auxiliary battery voltage not applied to terminals 1 and 2 10 KΩ or higher
        Auxiliary battery voltage applied to terminals 1 and 2 Below 1 Ω
    2. Heater relay No. 1
      GTY556238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Heater Relay No. 1)
      1. Remove the heater relay No. 1 from the relay holder.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G96-3 - G96-4 Auxiliary battery voltage not applied to terminals 1 and 2 Below 1 Ω
        Auxiliary battery voltage applied to terminals 1 and 2 10 KΩ or higher
        G96-3 - G96-5 Auxiliary battery voltage not applied to terminals 1 and 2 10 KΩ or higher
        Auxiliary battery voltage applied to terminals 1 and 2 Below 1 Ω
        G96-4 - G96-5 Always 10 KΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE S/HTR HI RH RELAY OR HEATER RELAY NO. 1 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (S/HTR HI RH RELAY AND HEATER RELAY NO. 1 - POWER SOURCE CIRCUIT) 
    1. S/HTR HI RH relay
      GTY564612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a No. 3 Relay Box
      *b S/HTR HI RH Relay Holder
      1. Remove the S/HTR HI RH relay from the No. 3 relay box.
      2. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        S/HTR HI RH relay holder (2) - Body ground Power switch on (IG) 11 to 14 V
        S/HTR HI RH relay holder (2) - Body ground Power switch off Below 1 V
        S/HTR HI RH relay holder (5) - Body ground Power switch on (IG) 11 to 14 V
        S/HTR HI RH relay holder (5) - Body ground Power switch off Below 1 V
    2. Heater relay No. 1
      GTY605231Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Relay Holder
      1. Remove the heater relay No. 1 from the relay holder.
      2. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        G96-1 - Body ground Power switch on (IG) 11 to 14 V
        G96-1 - Body ground Power switch off Below 1 V
        G96-5 - Body ground Power switch on (IG) 11 to 14 V
        G96-5 - Body ground Power switch off Below 1 V
      3. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G96-4 - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (S/HTR HI RH RELAY AND HEATER RELAY NO. 1 - AIR CONDITIONING AMPLIFIER ASSEMBLY) 
    1. S/HTR HI RH relay
      1. Disconnect the G43 air conditioning amplifier assembly connector.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        S/HTR HI RH relay holder (1) - G43-17 (SHD+) Always Below 1 Ω
        G43-17 (SHD+) - Body ground Always 10 KΩ or higher
        S/HTR HI RH relay holder (1) - Body ground Always 10 KΩ or higher
    2. Heater relay No. 1
      1. Disconnect the G43 air conditioning amplifier assembly connector.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        Heater relay No. 1 holder (2) - G43-18 (SHD-) Always Below 1 Ω
        G43-18 (SHD-) - Body ground Always 10 KΩ or higher
        Heater relay No. 1 holder (2) - Body ground Always 10 KΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (S/HTR HI RH RELAY AND HEATER RELAY NO. 1 - FRONT SEAT CUSHION PAD WITH COVER RH) 
    1. S/HTR HI RH relay
      1. Disconnect the Z7 front seat cushion pad with cover RH connector.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        S/HTR HI RH relay holder (3) - Z7-2 Always Below 1 Ω
        S/HTR HI RH relay holder (3) - Body ground Always 10 KΩ or higher
        Z7-2 - Body ground Always 10 KΩ or higher
    2. Heater relay No. 1
      1. Disconnect the Z7 front seat cushion pad with cover RH connector.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        Heater relay No. 1 holder (3) - Z7-1 Always Below 1 Ω
        Heater relay No. 1 holder (3) - Body ground Always 10 KΩ or higher
        Z7-1- Body ground Always 10 KΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (FRONT SEAT CUSHION PAD WITH COVER RH - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Z7-3 - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. INSPECT FRONT SEAT CUSHION PAD WITH COVER RH 
    1. Remove the front seat cushion pad with cover RH.

      SEAT > FRONT SEAT CUSHION HEATER > REMOVAL

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

      SEAT > FRONT SEAT CUSHION HEATER > INSPECTION

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT SEAT CUSHION PAD WITH COVER RH. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    OK 

    See step  8

  8. INSPECT FRONT SEATBACK PAD WITH COVER RH 
    1. Remove the front seatback pad with cover RH.

      SEAT > FRONT SEATBACK HEATER > REMOVAL

    2. Inspect the front seatback pad with cover RH.

      SEAT > FRONT SEATBACK HEATER > INSPECTION

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT SEATBACK PAD WITH COVER RH. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    OK 

    See step  9

  9. CHECK SEAT HEATER OPERATION 
    1. Temporarily replace the integration control panel assembly with a new or known good one.

      Refer to REMOVAL [06/2015 - ]

    2. Check the seat heater.

      Refer to OPERATION CHECK [06/2015 - ] 

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (INTEGRATION CONTROL PANEL ASSEMBLY WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [06/2015 - ] 

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