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Home >> Lexus >> 2024 >> RC 350 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Battery / Charging System (8AR-FTS) - Diagnostic Codes & Symptom Tests) >> Charging System >> DTC P161A-87: Lost Communication with Alternator Missing Message [10/2015 - ] >> Procedure

DTC P161A-87: Lost Communication with Alternator Missing Message [10/2015 - ]: Procedure

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  1. CHECK CHARGING SYSTEM 
    1. Check the charging system.

      Refer to ON-VEHICLE INSPECTION [10/2015 - 09/2020] , or refer to ON-VEHICLE INSPECTION [09/2020 - ] 

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CHARGING SYSTEM 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY) 
    1. Disconnect the F67 ECM connector.
    2. Disconnect the F71 generator assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F67-61 (LIN) - F71-2 (LIN) Always Below 1 Ω
      F67-61 (LIN) or F71-2 (LIN) - body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE GENERATOR ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR