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Home >> Lexus >> 2009 >> LS 460 AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Smart Access System With Push-Button Start >> Rear Door RH Entry Unlock Function does not Operate >> Inspection Procedure
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Inspection 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 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 
    1. Using the Techstream, read the Data List.

      Rear Right Door (Rear door ECU RH) 

      REAR RIGHT DOOR (REAR DOOR ECU RH) DATA LIST REFERENCE

      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Entry Sensor Rear RH side door touch sensor/ON or OFF ON: Rear RH side door sensor is touched
      OFF: Rear RH side door sensor is not touched      		 -

      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 RH (OPERATION) 
    1. Replace the rear door ECU RH 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 RH IS DEFECTIVE) 

  4. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - REAR DOOR ECU RH) 
    Fig 1: Identifying O3 ECU Connector And C2 Oscillator Connector Terminals
    G04951642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the O3 ECU connector.
    2. Disconnect the c2 oscillator connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      O3-16 (SEL) - c2-4 (SEL) Always Below 1 Ω
      O3-16 (SEL) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - REAR DOOR OUTSIDE HANDLE RH) 
    Fig 2: Identifying C2 Oscillator Connector And C1 Handle Connector Terminals
    G04951643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the c2 oscillator connector.
    2. Disconnect the d handle connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      c2-2 (SGT6) - d-6 (SGT5) Always Below 1 Ω
      c2-2 (SGT6) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step 

  6. 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 7 

      OK: END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

  7. CHECK REAR DOOR OUTSIDE HANDLE RH (OPERATION) 
    1. Replace the rear door outside handle RH 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: END (REAR DOOR OUTSIDE HANDLE RH IS DEFECTIVE) 

  8. REPLACE REAR DOOR ECU RH (OPERATION) 
    1. Replace the rear door ECU RH 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 RH IS DEFECTIVE) 

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