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Home >> Lexus >> 2010 >> IS F >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Smart Access System (Keyless Entry) (Diagnostics & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Driver Side Door Entry Lock Function does not Operate >> Procedure

Driver Side Door Entry Lock Function does not Operate: Procedure

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

      OK

      Locked doors unlock.

    NG → See step   9 

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (DOOR UNLOCK DETECTION SWITCH) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Master Switch / Data List.
    5. Read the Data List according to the display on the Techstream.
      MASTER SWITCH (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Lock Pos SW Driver side door unlock detection switch signal/ON or OFF ON: Driver side door is unlocked
      OFF: Driver side door is locked
      -

      OK

      On the Techstream screen, ON or OFF will be displayed accordingly.

      Result

      Result Proceed to
      OK A
      NG B
      (Refer to "Driver Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table)

    B → See step   12 

    A: Go to next step 

  3. READ VALUE USING TECHSTREAM (DOOR OUTSIDE HANDLE) 
    1. Enter the following menus: Body Electrical / Smart Access / Data List.
    2. Read the Data List according to the display on the Techstream.
      SMART ACCESS (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D-Door Trigger SW Driver side door lock switch / ON or OFF ON: Entry lock switch is pressed
      OFF: Entry lock switch is not pressed
      -

      OK

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

    NG → See step   4 

    OK → See step   11 

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the front door outside handle assembly (driver side) connector.
    2. Disconnect the door electrical key oscillator (driver side) connector.
      Fig 1: Identifying o1 And o2 Connector Terminals
      GTY116590Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      o1-1 (TRG-) - o2-9 (TRG-) Always Below 1 Ω
      o1-1 (TRG-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE) 
    1. Disconnect the certification ECU (smart key ECU assembly) connector.
      Fig 2: Identifying P33 And o1 Connector Terminals
      GTY134540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P33-3 (TSW1) - o1-3 (TRG+) Always Below 1 Ω
      P33-3 (TSW1) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. INSPECT FRONT DOOR OUTSIDE HANDLE ASSEMBLY (DRIVER SIDE) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying Front Door Outside Handle Assembly LH
      GTY115553Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

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

    NG → See step   10 

    OK: Go to next step 

  7. REPLACE DOOR ELECTRICAL KEY OSCILLATOR (DRIVER SIDE) 
    1. Replace the door electrical key oscillator (driver side). Refer to REMOVAL .

    NEXT: Go to next step 

  8. CHECK DOOR ELECTRICAL KEY OSCILLATOR (DRIVER SIDE OPERATION) 
    1. Check that the entry functions operate normally. Refer to OPERATION CHECK .

      OK

      Entry functions operate normally.

    NG → See step   11 

    OK → END (DOOR ELECTRICAL OSCILLATOR IS DEFECTIVE) 

  9. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  OPERATION CHECK 
  10. REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (DRIVER SIDE). Refer to  REMOVAL 
  11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL 
  12. GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table). Refer to  PROBLEM SYMPTOMS TABLE