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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Acoustic Vehicle Alerting System (Diagnostic Codes & Symptom Tests) >> Acoustic Vehicle Alerting System >> DTC B1350: Speaker Circuit [07/2022 - ] >> Procedure

DTC B1350: Speaker Circuit [07/2022 - ]: Procedure

  1. INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY 
    1. Remove the vehicle approaching speaker assembly.

      Refer to REMOVAL [08/2021 - ]

    2. Inspect the vehicle approaching speaker assembly.

      Refer to INSPECTION [08/2021 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - VEHICLE APPROACHING SPEAKER ASSEMBLY) 
    1. Disconnect the F142 vehicle approaching speaker controller connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A14-2 (+) - F142-7 (SP+) Always Below 1 Ω
      A14-1 (-) - F142-8 (SP-) Always Below 1 Ω
      A14-2 (+) or F142-7 (SP+) - Body ground Always 10 kΩ or higher
      A14-1 (-) or F142-8 (SP-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER. Refer to  REMOVAL [07/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR