LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2009 >> LS 460 AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Smart Access System With Push-Button Start >> Rear Door LH Entry Lock Function does not Operate >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

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

      Result 

      RESULT CHART

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

      NG:  GO TO POWER DOOR LOCK CONTROL SYSTEM 

      OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (OUTSIDE HANDLE) 
    1. Using the Techstream, read the Data List.

      Rear Left Door (Rear door ECU LH) 

      REAR LEFT DOOR (REAR DOOR ECU LH) DATA LIST REFERENCE

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

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

      NG:  Go to step  4

      OK: Go to next step 

  3. CHECK REAR DOOR ECU LH (OPERATION) 
    1. Replace the rear door ECU LH with a new one or normally functioning one (see REMOVAL ).
    2. Check that the entry function operates normally.

      OK: Operates normally 

      NG: REPLACE CERTIFICATION ECU 

      OK: END (REAR DOOR ECU LH IS DEFECTIVE) 

  4. CHECK REAR DOOR OUTSIDE HANDLE LH 
    1. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      d1-1 (TRG-) - d1-3 (TRG+) ON Below 1 Ω
      d1-1 (TRG-) - d1-3 (TRG+) OFF 10 kΩ or higher
      Fig 1: Identifying D1 Rear Door Outside Handle LH Connector Terminals
      G04951688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE REAR DOOR OUTSIDE HANDLE LH  (See REMOVAL )

      OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (REAR DOOR OUTSIDE HANDLE LH - REAR DOOR ECU LH) 
    Fig 2: Identifying D1 Handle Connector And O14 ECU Connector Terminals
    G04951689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the d1 handle connector.
    2. Disconnect the O14 ECU connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      d1-3 (TRG+) - O14-20 (TRG+) Always Below 1 Ω
      d1-3 (TRG+) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (REAR DOOR OUTSIDE HANDLE LH - DOOR ELECTRICAL KEY OSCILLATOR) 
    Fig 3: Identifying D2 Oscillator Connector And D1 Handle Connector Terminals
    G04951690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the d1 handle connector.
    2. Disconnect the d2 oscillator connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      d1-1 (TRG-) - d2-9 (TRG-) Always Below 1 Ω
      d1-1 (TRG-) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step 

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

      OK: Operates normally 

      NG: Go to step 8 

      OK: Go to next step 

  8. CHECK REAR DOOR ECU LH (OPERATION) 
    1. Replace the rear door ECU LH with a new one or normally functioning one (see REMOVAL ).
    2. Check that the entry function operates normally.

      OK: Operates normally 

      NG: REPLACE CERTIFICATION ECU 

      OK: END (REAR DOOR ECU LH IS DEFECTIVE) 

scientia non olet · About LEMON Manuals