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Home >> Toyota >> 2011 >> Land Cruiser >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Smart Key System (For Entry Function) (Diagnostics & Symptom Tests) >> SMART KEY SYSTEM (for Entry Function) >> Rear Door LH Entry Unlock Function does not Operate >> Procedure
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Rear Door LH Entry Unlock Function does not Operate: 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   9 

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (TOUCH SENSOR) 
    1. Using the Techstream, read the Data List.
      SMART KEY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Dr-Door Touch Sensor Driver side rear door touch sensor / ON or OFF ON: Touch sensor touched
      OFF: Touch sensor not touched      		 -

      OK

      "ON" (sensor is touched) and "OFF" (sensor is not touched) appears on the screen.

    NG → See step   3 

    OK → See step   10 

  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - DOOR ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the E30 ECU connector.
      Fig 1: Identifying Certification ECU And Door Electrical Key Oscillator Connector Terminals
      GTY115632Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z28 oscillator connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E30-1 (SEL3) - z28-4 (SEL) Always Below 1 Ω
      E30-28 (SEN3) - z28-6 (SENS) Always Below 1 Ω
      E30-1 (SEL3) - Body ground Always 10 kΩ or higher
      E30-28 (SEN3) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - REAR DOOR OUTSIDE HANDLE) 
    1. Disconnect the z27 handle connector.
      Fig 2: Identifying Door Electrical Key Oscillator And Rear Door Outside Handle Connector Terminals
      GTY116697Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z28 oscillator connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z27-6 (SGT) - z28-2 (SGT) Always Below 1 Ω
      z27-6 (SGT) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. REPLACE DOOR ELECTRICAL KEY OSCILLATOR 
    1. Replace the door electrical key oscillator, refer to DISASSEMBLY - Step 37 .

    NEXT: Go to next step 

  6. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) 
    1. Check that the entry function operates normally.

      OK

      Operates normally.

    NG → See step   7 

    OK → END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

  7. REPLACE REAR DOOR OUTSIDE HANDLE 
    1. Replace the rear door outside handle, refer to DISASSEMBLY - Step 28 .

    NEXT: Go to next step 

  8. CHECK REAR DOOR OUTSIDE HANDLE (OPERATION) 
    1. Check that the entry function operates normally.

      OK

      Operates normally.

    NG → See step   10 

    OK → END (REAR DOOR OUTSIDE HANDLE IS DEFECTIVE) 

  9. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  OPERATION CHECK 
  10. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL 
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