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HOMESERVICE MANUALSLEXUS2010LS 460L AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSSMART ACCESS SYSTEM (KEYLESS ENTRY) (DIAGNOSTICS & SYMPTOM TESTS)SMART ACCESS SYSTEM WITH PUSH-BUTTON STARTREAR DOOR RH ENTRY LOCK FUNCTION DOES NOT OPERATEPROCEDURE
2010 Lexus LS 460L AWD

Rear Door RH Entry Lock Function does not Operate: Procedure

2010 Lexus LS 460L AWDSECTION Procedure
  1. CHECK POWER DOOR LOCK OPERATION 
    1. When the master switch assembly's door control switch is operated, check that the locked doors unlock.
      RESULT

      Result Proceed to
      Door locks operate normally OK
      Door locks do not operate normally NG

    NG → See step   10 

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) 
    1. Using the Techstream, read the Data List.
      REAR RIGHT DOOR (REAR DOOR ECU RH)

      Tester Display Measurement Item/Display Normal Condition
      Lock Position SW Rear RH side door lock position switch signal / ON or OFF ON: Rear RH side door is unlocked
      OFF: Rear RH side door is locked

      OK

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

    NG → See step   12 

    OK: Go to next step 

  3. READ VALUE USING TECHSTREAM (OUTSIDE HANDLE) 
    1. Using the Techstream, read the Data List.
      REAR RIGHT DOOR (REAR DOOR ECU RH)

      Tester Display Measurement Item/Display Normal Condition
      Outside Handle Trigger SW Rear RH side door outside handle lock switch / ON or OFF ON: Rear RH side door outside handle lock switch is pushed
      OFF: Rear RH side door outside handle lock switch is not pushed

      OK

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

    NG → See step   5 

    OK: Go to next step 

  4. CHECK REAR DOOR ECU RH (OPERATION) 
    1. Replace the rear door ECU RH with a new one or normally functioning one. Refer toCOMPONENTS .
    2. Check that the entry function operates normally.

      OK

      Operates normally

    NG → REPLACE CERTIFICATION ECU 

    OK → END (REAR DOOR ECU RH IS DEFECTIVE) 

  5. INSPECT REAR DOOR OUTSIDE HANDLE RH 
    Fig 1: Inspect Rear Door Outside Handle RH
    GTY282736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Switch Condition Specified Condition
      c1-3 (TRG+) - c1-1 (TRG-) ON Below 1 Ω
      c1-3 (TRG+) - c1-1 (TRG-) OFF 10 kΩ or higher

    NG → See step   11 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (REAR DOOR OUTSIDE HANDLE RH - REAR DOOR ECU RH) 
    Fig 2: Identifying O3 ECU Connector Terminal And c1 Handle Connector Terminals
    GTY117045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the c1 handle connector.
    2. Disconnect the O3 ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      c1-3 (TRG+) - O3-20 (TRG+) Always Below 1 Ω
      c1-3 (TRG+) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (REAR DOOR OUTSIDE HANDLE RH - DOOR ELECTRICAL KEY OSCILLATOR) 
    Fig 3: Identifying c1 Handle Connector And c2 Oscillator Connector Terminals
    GTY117060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the c1 handle connector.
    2. Disconnect the c2 oscillator connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      c1-1 (TRG-) - c2-9 (TRG-) Always Below 1 Ω
      c1-1 (TRG-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

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

      OK

      Operates normally

    NG → See step   9 

    OK → END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

  9. CHECK REAR DOOR ECU RH (OPERATION) 
    1. Replace the rear door ECU RH with a new one or normally functioning one. Refer toCOMPONENTS .
    2. Check that the entry function operates normally.

      OK

      Operates normally

    NG → REPLACE CERTIFICATION ECU 

    OK → END (REAR DOOR ECU RH IS DEFECTIVE) 

  10. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to PRECAUTION 
  11. REPLACE REAR DOOR OUTSIDE HANDLE RH. Refer to COMPONENTS 
  12. GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Rear Door RH LOCK/UNLOCK Functions do not Operate). Refer to PROBLEM SYMPTOMS TABLE 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
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  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.