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Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Door Lock >> Smart Access System With Push-Button Start >> Driver Side Door Entry Unlock Function does not Operate >> Inspection Procedure
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Inspection Procedure

NOTE: Before performing the inspection, check that there are no problems related to the "CAN COMMUNICATION SYSTEM" and "LIN COMMUNICATION SYSTEM".
  1. CHECK POWER DOOR LOCK OPERATION 
    1. When the master switch's door control switch is operated, check that the locked doors unlock (see OPERATION CHECK  )

      OK: Locked doors unlock. 

    NG: GO TO POWER DOOR LOCK CONTROL SYSTEM 

    OK: Go to next Step 

  2. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM 
    1. Using the intelligent tester or Techstream, read the Data List (see DATA LIST / ACTIVE TEST  )
      1. Intelligent tester

        D-DOOR 

        DIAGNOSTIC NOTE NORMAL CONDITION CHART

        Tester Display Measurement Item/Display Normal Condition Diagnostic Note
        ENTRY SENSOR Driver side door touch sensor / ON or OFF ON Driver side door sensor is touched
        OFF Driver side door sensor is not touched        		 -
      2. Techstream

        Driver Door 

        DIAGNOSTIC NOTE NORMAL CONDITION CHART

        Tester Display Measurement Item/Display Normal Condition Diagnostic Note
        Entry Sensor Driver side door touch sensor / ON or OFF ON Driver side door sensor is touched
        OFF Driver side door sensor is not touched        		 -

        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 FRONT DOOR )
    2. Check that the entry function operates normally (see OPERATION CHECK  )

      OK: Operates normally 

    NG: REPLACE CERTIFICATION ECU  (See REMOVAL )

    OK: END (FRONT DOOR ECU LH IS DEFECTIVE) 

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR LH - DOOR ELECTRICAL KEY OSCILLATOR) 
    Fig 1: Identifying B1 Oscillator Connector Terminals And N10 ECU Connector Terminals
    G04951636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N10 ECU connector
    2. Disconnect the b1 oscillator connector
    3. Measure the resistance according to the value(s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      N10-15 (SEL) - b1-4 (SEL) Always Below 1 Ω
      N10-15 (SEL) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next Step 

  5. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE LH) 
    Fig 2: Identifying B1 Oscillator Connector Terminals And B2 Handle Connector Terminals
    G05783160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the b1 oscillator connector
    2. Disconnect the b2 handle connector.
    3. Measure the resistance according to the value (s) in the table below

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      b1-2 (SGT4) - b2-6 (SGT3) Always Below 1 Ω
      b1-2 (SGT4) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next Step 

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

      OK: Operates normally 

    NG: Go to step 7 

    OK: END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

  7. CHECK FRONT DOOR OUTSIDE HANDLE LH (OPERATION) 
    1. Replace the front door outside handle LH with a new one or normally functioning one (see ENTRY LOCK AND UNLOCK SWITCH (FOR FRONT)  )
    2. Check that the entry function operates normally (see OPERATION CHECK  )

      OK: Operates normally 

    NG: Go to step 8 

    OK: END (FRONT DOOR OUTSIDE HANDLE LH 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 FRONT DOOR )
    2. Check that the entry function operates normally (see OPERATION CHECK  )

      OK: Operates normally 

    NG: REPLACE CERTIFICATION ECU  (See REMOVAL )

    OK: END (FRONT DOOR ECU LH IS DEFECTIVE) 

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