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Stereo Jack Adapter Light does not Illuminate [06/2018 - 09/2022]: Procedure

WARNING: This page is about a different car, the 2022 Lexus ES 300h, 2021 Lexus ES 300h, 2020 Lexus ES 300h, and 2019 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND CONNECTOR (NO. 1 STEREO JACK ADAPTER ASSEMBLY ILLUMINATION POWER SOURCE) 
    1. Disconnect the G103 and G8 No. 1 stereo jack adapter assembly connectors.
    2. Measure the voltage according to the value(s) in the table below.
      GTY823344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 Stereo Jack Adapter Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      G103-1 (UPI) - Body ground Power switch on (ACC) 5 V
      G8-8 (ACC) - Body ground Power switch on (ACC) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 STEREO JACK ADAPTER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 09/2022] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) 
    1. Disconnect the G112 radio receiver assembly connector.
    2. Disconnect the G103 No. 1 stereo jack adapter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY823426Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio Receiver Assembly)
      *b Front view of wire harness connector
      (to No. 1 Stereo Jack Adapter Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      G103-1 (UPI) - G112-1 (USV1) Always Below 1 Ω
      G103-1 (UPI) or G112-1 (USV1) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) 
    1. Disconnect the G6 radio receiver assembly connector.
    2. Disconnect the G8 No. 1 stereo jack adapter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G8-8 (ACC) - G6-16 (ACC) Always Below 1 Ω
      G8-8 (ACC) or G6-16 (ACC) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 09/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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