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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Smart Access System With Push-Button Start >> Driver Side Door Entry Lock Function does not Operate >> Inspection Procedure
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Inspection Procedure

  1. CHECK POWER DOOR LOCK OPERATION 
    1. When the master switch assembly's door control switch is operated, check that the locked doors unlock.

      Result 

      POWER DOOR LOCK OPERATION

      Result Proceed to
      Door locks operate normally OK
      Door locks do not operate normally NG

    NG: GO TO POWER DOOR LOCK CONTROL SYSTEM (See  POWER DOOR LOCK CONTROL SYSTEM   ) 

    OK: GO TO NEXT STEP 

  2. READ VALUE OF INTELLIGENT TESTER OR TECHSTREAM (OUTSIDE HANDLE) 
    1. Using the intelligent tester or Techstream, read the Data List.
      1. Intelligent tester

        D-DOOR (Front door ECU LH) 

        INTELLIGENT TESTER - D-DOOR (FRONT DOOR ECU LH)

        Tester Display Measurement Item/Display Normal Condition Diagnostic Note
        TRIGGER SW Driver side door outside handle lock switch / ON or OFF ON: Driver side door outside handle lock switch is pushed
        OFF: Driver side door outside handle lock switch is not pushed
        -
      2. Techstream

        Driver Door (Front door ECU LH) 

        TECHSTREAM - DRIVER DOOR (FRONT DOOR ECU LH)

        Tester Display Measurement Item/Display Normal Condition Diagnostic Note
        Outside Handle Trigger SW Driver side door outside handle lock switch / ON or OFF ON: Driver side door outside handle lock switch is pushed
        OFF: Driver side door outside handle lock switch is not pushed
        -

        OK: On tester screen, item changes between ON and OFF according to above chart. 

    NG: Go to step   4 

    OK: GO TO NEXT STEP 

  3. CHECK FRONT DOOR ECU LH (OPERATION) 
    1. Replace the front door ECU LH with a new one or normally functioning one (see INSTALLATION ).
    2. Check that the entry function operates normally.

      OK: Operates normally 

    NG: REPLACE CERTIFICATION ECU 

    OK: END (FRONT DOOR ECU LH IS DEFECTIVE) 

  4. INSPECT FRONT DOOR OUTSIDE HANDLE LH 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      FRONT DOOR OUTSIDE HANDLE LH

      Tester Connection Switch Condition Specified Condition
      b2-3 (TRG+) - b2-1 (TRG-) ON Below 1 Ω
      b2-3 (TRG+) - b2-1 (TRG-) OFF 10 kΩ or higher
      Fig 1: Identifying Front Door Outside Handle Connector Terminal
      G04951682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT DOOR OUTSIDE HANDLE LH  (See INSTALLATION )

    OK: GO TO NEXT STEP 

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE LH - FRONT DOOR ECU LH) 
    Fig 2: Identifying B2 Front Door Outside Handle - N10 Front Door ECU Connector Terminal
    G04951683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the b2 handle connector.
    2. Disconnect the N10 ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      FRONT DOOR OUTSIDE HANDLE LH - FRONT DOOR ECU LH

      Tester Connection Condition Specified Condition
      b2-3 (TRG+)-N10-20 (TRG+) Always Below 1 Ω
      b2-3 (TRG+) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE LH - DOOR ELECTRICAL KEY OSCILLATOR) 
    Fig 3: Identifying B2 Front Door Outside Handle - B1 Door Electrical Key Oscillator Connector Terminal
    G04951684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the b2 handle connector.
    2. Disconnect the b1 oscillator connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      FRONT DOOR OUTSIDE HANDLE LH - DOOR ELECTRICAL KEY OSCILLATOR

      Tester Connection Condition Specified Condition
      b2-1 (TRG-)-b1-9(TRG-) Always Below 1 Ω
      b2-1 (TRG-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  7. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) 
    1. Replace the door electrical key oscillator with a new one or normally functioning one (see INSTALLATION ).
    2. Check that the entry function operates normally.

      OK: Operates normally 

    NG: Go to step 8 

    OK: END (DOOR ELECTRICAL OSCILLATOR IS DEFECTIVE) 

  8. CHECK FRONT DOOR ECU LH (OPERATION) 
    1. Replace the front door ECU LH with a new one or normally functioning one (see INSTALLATION ).
    2. Check that the entry function operates normally.

      OK: Operates normally 

    NG: REPLACE CERTIFICATION ECU 

    OK: END (FRONT DOOR ECU LH IS DEFECTIVE)