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Home >> Lexus >> 2021 >> ES 350 Luxury >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System (Except Hybrid) - Symptom Tests (2 Of 2) & Circuit Tests >> NAVIGATION SYSTEM (for Gasoline Model) >> Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU [06/2018 - 09/2022] >> Procedure

Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU [06/2018 - 09/2022]: Procedure

  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) 
    1. Disconnect the G1 radio receiver assembly connector.
    2. Disconnect the G14 navigation ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G1-7 (SUP) - G14-21 (SUP) Always Below 1 Ω
      G1-7 (SUP) or G14-21 (SUP) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 10/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [10/2019 - 08/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2020 - 08/2021]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2021 - 09/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR