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CLIMATE CONTROL SEAT SYSTEM Climate Control System does not Operate on Rear Right Side

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DTC Code DTC Name
  Climate Control System does not Operate on Rear Right Side
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DESCRIPTION

The air conditioning amplifier assembly receives ventilation volume switch signals when the power switch is on (IG), and then transmits airflow amount signals to each seat climate blower.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

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

  • The climate control seat system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the climate control seat system after confirming that the communication system is functioning properly.

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  • If the auxiliary battery voltage is low, the climate control seat system may not operate. When "High Power Consumption Partial Limit On AC/Heater Operation" is displayed on the multi-information display in the combination meter assembly, inspect the auxiliary battery, referring to On-vehicle Inspection for the charging system.

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Tip:

If the auxiliary battery voltage is low, the climate control seat system may not operate. When "High Power Consumption Partial Limit On AC/Heater Operation" 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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PROCEDURE


  1. Click here

    CHECK CLIMATE CONTROL SEAT OPERATION


    1. Check the climate control seat operation.

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      Result
      Result Proceed to
      Only rear seatback climate control blower RH does not operate A
      Only rear seat cushion climate control blower assembly RH does not operate B
      Both climate control blowers do not operate C

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    CHECK HARNESS AND CONNECTOR (REAR SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY RH - REAR SEATBACK CLIMATE CONTROL BLOWER RH)


    1. Disconnect the T1 rear seat cushion climate control blower assembly RH connector.

    2. Disconnect the R10 rear seatback climate control blower RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T1-5 (CTB) - R10-1 (IG) Always Below 1 Ω
      T1-5 (CTB) or R10-1 (IG) - Other terminals and body ground Always 10 kΩ or higher
      T1-6 (BBS) - R10-3 (BFB+) Always Below 1 Ω
      T1-6 (BBS) or R10-3 (BFB+) - Other terminals and body ground Always 10 kΩ or higher
      T1-4 (BFB-) - R10-4 (GND) Always Below 1 Ω
      T1-4 (BFB-) or R10-4 (GND) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. Click here

    REPLACE REAR SEATBACK CLIMATE CONTROL BLOWER RH


    1. Temporarily replace the rear seatback climate control blower RH with a new or known good one.

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      Result
      Proceed to
      NEXT

  4. Click here

    CHECK CLIMATE CONTROL SEAT OPERATION


    1. Check the climate control seat operation again.

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      OK
      The climate control seat operates normally.
      Result
      Proceed to
      OK
      NG

    • OK

      END (REAR SEATBACK CLIMATE CONTROL BLOWER RH WAS DEFECTIVE)

    • NG

      REPLACE REAR SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY RHClick here

  5. Click here

    CHECK HARNESS AND CONNECTOR (REAR SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY RH - BATTERY AND BODY GROUND)


    1. Disconnect the T1 rear seat cushion climate control blower assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T1-8 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      T1-1 (IG) - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - REAR SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY RH)


    1. Disconnect the G63 air conditioning amplifier assembly connector.

    2. Disconnect the T1 rear seat cushion climate control blower assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G63-14 (SVDB) - T1-7 (SING) Always Below 1 Ω
      G63-14 (SVDB) or T1-7 (SING) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY


    1. B004YF7C06
      Table 1.
      *1 SVDB
      *a

      Component with harness connected

      (Air Conditioning Amplifier Assembly)

      Check for pulses according to the value(s) in the table below.

      Table 2. Measurement Condition
      Item Content
      Tester Connection G63-14 (SVDB) - Body ground
      Tool Setting 1 V/DIV., 1 ms/DIV.
      Vehicle Condition

      • Power switch on (IG)

      • Ventilation volume switch on
      OK
      Waveform is similar to that shown in the illustration.
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE REAR SEAT CUSHION CLIMATE CONTROL BLOWER ASSEMBLY RHClick here

    • NG

      REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLYClick here