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Home >> Toyota >> 2014 >> Land Cruiser >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (Smart Key System (For Entry Function) (Diagnostics & Symptom Tests)) >> SMART KEY SYSTEM (for Entry Function) >> Symptom Tests >> Rear Door LH Entry Lock Function does not Operate >> Procedure
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Rear Door LH Entry Lock Function does not Operate: Procedure

WARNING: This page is about a different car, the 2013 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  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 KEY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Dr-Door Trigger Switch Driver side rear 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 (REAR DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the z28 oscillator connector.
      Fig 1: Identifying Rear Door Outside Handle And Door Electrical Key Oscillator
      GTY116586Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z27 handle connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z28-9 (TRG-) - z27-1 (TRG-) Always Below 1 Ω
      z28-9 (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] - REAR DOOR OUTSIDE HANDLE) 
    1. Disconnect the E30 ECU connector.
      Fig 2: Identifying Certification ECU And Rear Door Outside Handle Connector Terminals
      GTY115637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z27 handle connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E30-25 (TSW3) - z27-3 (TRG+) Always Below 1 Ω
      E30-25 (TSW3) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. INSPECT REAR DOOR OUTSIDE HANDLE LH 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying Rear Door Outside Handle LH Connector Terminal z27
      GTY115806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      z27-1 (TRG-) - z27-3 (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 - Step 39 .

    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  OPERATION CHECK 
  9. REPLACE REAR DOOR OUTSIDE HANDLE. Refer to  REMOVAL - Step 10 
  10. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL 
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