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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 211 (Navigation System (Except Hybrid) - Diagnostic Codes (2 Of 2) & Symptom Tests (1 Of 2)) >> NAVIGATION SYSTEM (for Gasoline Model) >> Stereo Jack Adapter Light does not Illuminate [06/2018 - 09/2022] >> Procedure

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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2022 Lexus ES 350, 2022 Lexus ES 250, 2021 Lexus ES 350, 2021 Lexus ES 250, and 2020 Lexus ES 350. 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.
      GTY823343Courtesy 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 Engine switch on (ACC) 5 V
      G8-8 (ACC) - Body ground Engine 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 G102 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.
      GTY823423Courtesy 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) - G102-1 (USV1) Always Below 1 Ω
      G103-1 (UPI) or G102-1 (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 G5 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) - G5-16 (ACC) Always Below 1 Ω
      G8-8 (ACC) or G5-16 (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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