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Home >> Lexus >> 2014 >> LX 570 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Smart Access System With Push-Button Start (Keyless Entry) (Diagnostics & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Symptom Tests >> Driver Side Door Entry Lock Function does not Operate [08/2013 - ] >> Procedure
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Driver Side Door Entry Lock Function does not Operate [08/2013 - ]: Procedure

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

      OK

      Door locks operate normally.

    NG → See step   8 

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (LOCK SWITCH) 
    1. Using the Techstream, read the Data List.
      SMART ACCESS

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D-Door Trigger Switch Driver side door outside handle lock switch / ON or OFF ON: Entry lock switch pushed
      OFF: Entry lock switch not pushed      		 -

      OK

      On Techstream screen, item changes between ON and OFF according to above chart.

    NG → See step   3 

    OK → See step   10 

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the z24 oscillator connector.
      GTY128304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z23 handle connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z24-9 (TRG-) - z23-1 (TRG-) Always Below 1 Ω
      z24-9 (TRG-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - FRONT DOOR OUTSIDE HANDLE) 
    1. Disconnect the E29 ECU connector.
      GTY115636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z23 handle connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E29-3 (TSW1) - z23-3 (TRG+) Always Below 1 Ω
      E29-3 (TSW1) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. INSPECT FRONT DOOR OUTSIDE HANDLE (for Driver Side) 
    1. Remove the front door outside handle (for Driver Side). Refer to DISASSEMBLY [08/2013 - ] .
      GTY403285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      1 (TRG-) - 3 (TRG+) Lock switch not pushed 10 kΩ or higher
      Lock switch pushed Below 1 Ω

    NG → See step   9 

    OK: Go to next step 

  6. REPLACE DOOR ELECTRICAL KEY OSCILLATOR 
    1. Replace the door electrical key oscillator. Refer to DISASSEMBLY [08/2013 - ] - Step 42 .

    NEXT: Go to next step 

  7. CHECK DOOR ELECTRICAL KEY OSCILLATOR OPERATION 
    1. Check that the entry function operates normally.

      OK

      Operates normally.

    NG → See step   10 

    OK → END (DOOR ELECTRICAL OSCILLATOR IS DEFECTIVE) 

  8. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  PROBLEM SYMPTOMS TABLE [08/2013 - ] 
  9. REPLACE FRONT DOOR OUTSIDE HANDLE. Refer to  DISASSEMBLY [08/2013 - ] - Step 33 
  10. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2013 - ] 
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