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Home >> Lexus >> 2006 >> GS 430 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Door Lock >> Smart Access System With Push-Button Start >> Entry Lock Function does not Operate on Front Passenger Side Door >> Description

Entry Lock Function does not Operate on Front Passenger Side Door: Description

When the touch sensor inside the outside door handle front RH is touched, the multiplex network door ECU front RH (front passenger door ECU) sends a request signal to the door electrical key oscillator front RH. The key receives this request and transmits its ID code. Upon receiving the ID code, the certification ECU determines that the key is outside the vehicle and sends a lock signal to the front passenger side door lock through the cowl side junction block RH (multiplex network body).

  1. CHECK MANUAL DOOR LOCK OPERATION 
    1. Check that the manual door lock function operates normally.

      OK : Manual door lock function operates normally. 

    NG : GO TO  POWER DOOR LOCK CONTROL SYSTEM  

    OK : GO TO NEXT STEP 

  2. READ VALUE OF INTELLIGENT TESTER (DOOR COURTESY LIGHT SWITCH) 
    1. Check the DATA LIST for proper functioning of the front passenger side door courtesy light switch.

      Multiplex network door ECU front RH: 

      MULTIPLEX NETWORK DOOR ECU FRONT RH

      Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
      COURTESY SW Courtesy light switch / ON or OFF ON: Courtesy light switch is pushed
      OFF: Courtesy light switch is not pushed
      -

      OK : ON (door courtesy light switch is pushed) appears on the screen. 

    NG : GO TO LIGHTING SYSTEM 

    OK : GO TO NEXT STEP 

  3. READ VALUE OF INTELLIGENT TESTER (LOCK POSITION SWITCH) 
    1. Check the DATA LIST for proper functioning of the door lock position switch.

      Multiplex network door ECU front RH: 

      MULTIPLEX NETWORK DOOR ECU FRONT RH

      Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
      LOCK POS SW Door unlock detection switch signal / ON or OFF ON: Door is unlocked
      OFF: Door is locked
      -

      OK : ON (door is unlocked) appears on the screen. 

    NG : GO TO  POWER DOOR LOCK CONTROL SYSTEM  

    OK : GO TO NEXT STEP 

  4. READ VALUE OF INTELLIGENT TESTER (LOCK SWITCH) 
    1. Check the DATA LIST for proper functioning of the door lock switch.

      Certification ECU: 

      CERTIFICATION ECU

      Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
      P TRIGGER SW Passenger side-door lock switch / ON or OFF ON: Lock switch is pushed
      OFF: Lock switch is not pushed
      -

      OK : ON (lock switch is pushed) appears on the screen. 

    NG : REPLACE FRONT DOOR HANDLE ASSEMBLY OUTSIDE RH 

    OK : GO TO NEXT STEP 

  5. CHECK OPERATION OF MULTIPLEX NETWORK DOOR ECU FRONT RH 
    1. After replacing the multiplex network door ECU front RH with a normal one, check that the entry lock function operates normally.

      OK : Entry lock function operates normally. 

    NG : REPLACE CERTIFICATION ECU ASSEMBLY 

    OK : END (MULTIPLEX NETWORK DOOR ECU FRONT RH IS DEFECTIVE)