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Home >> Lexus >> 2017 >> LS 460 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (Keyless Entry) (Diagnostics & Symptom Tests) >> Smart Access System With Push-Button Start >> How To Proceed With Troubleshooting [09/2015 - ] >> Procedure

How To Proceed With Troubleshooting [09/2015 - ]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  2

  2. INSPECT BATTERY VOLTAGE 

    Standard voltage

    11 to 14 V

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  3

  3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Use the Techstream to check if the CAN communication system is functioning normally.

      Result

      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

    Result:  2

    GO TO CAN COMMUNICATION SYSTEM. Refer to  PRECAUTION [09/2015 - ] 

    Result:  1

    See step  4

  4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
    1. Use the Techstream to check if the LIN communication system is functioning normally.

      Result

      Result Proceed to
      LIN DTC is not output A
      LIN DTC is output B

    Result:  2

    GO TO LIN COMMUNICATION SYSTEM. Refer to  PRECAUTION [09/2015 - ] 

    Result:  1

    See step  5

  5. CHECK FOR DTC* 
    1. Check for DTCs. Based on the DTCs output above, try to cause the output of the same steering lock system DTC or engine immobiliser system DTC by simulating the symptoms indicated by the DTC.

      Result

      Result Proceed to
      DTC output does not reoccur A
      Steering lock system DTC output reoccurs B
      Engine immobiliser system DTC output reoccurs C

    Result:  2

    GO TO STEERING LOCK SYSTEM. Refer to  PRECAUTION [09/2015 - ] 

    Result:  3

    GO TO ENGINE IMMOBILISER SYSTEM. Refer to  PRECAUTION [09/2015 - ] 

    Result:  1

    See step  6

  6. PROBLEM SYMPTOMS TABLE 

    Result

    Result Proceed to
    Fault is not listed in problem symptoms table A
    Fault is listed in problem symptoms table B

    Result:  2

    See step  8

    Result:  1

    See step  7

  7. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Operation Check

      Refer to OPERATION CHECK [09/2015 - ] 

    2. Data List / Active Test

      Refer to DATA LIST / ACTIVE TEST [09/2015 - ] 

    3. Terminals of ECU

      Refer to TERMINALS OF ECU [09/2015 - ] 

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  8

  8. REPAIR OR REPLACEMENT 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  9

  9. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    END