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Home >> Lexus >> 2007 >> GS 430 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Smart Access System With Push-Button Start >> Front Passenger Side Door Entry Unlock Function does not Operate >> Inspection Procedure
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Inspection Procedure

  1. CHECK MANUAL DOOR UNLOCK OPERATION 
    1. Check that the manual door unlock function operates normally.

      OK: 

      Manual door unlock 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 switches.

    Multiplex network door ECU front RH: 

    MULTIPLEX NETWORK DOOR ECU FRONT RH - DATA LIST

    Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
    COURTESY SW Courtesy 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 - DATA LIST

    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. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FRONT PASSENGER SIDE SELECT) 
    1. Select the ACTIVE TEST, use the intelligent tester to generate a control command, and then check that the oscillator operates.

    Certification ECU: 

    CERTIFICATION ECU - ACTIVE TEST LIST

    Item Test Details Diagnostic Note
    P SELECT SIG Front passenger side select ON / OFF -

    OK: 

    ON (P SELECT SIG is on) appears on the screen. 

    NG: REPLACE CERTIFICATION ECU ASSEMBLY 

    OK: Go to next step 

  5. READ VALUE OF INTELLIGENT TESTER (PASSENGER SIDE TOUCH SENSOR) 
    1. With "P SELECT SIG" ON, check the DATA LIST for proper functioning of the touch sensor.

    Certification ECU: 

    CERTIFICATION ECU - DATA LIST

    Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
    P TOUCH SENSOR Passenger side door touch sensor / ON or OFF ON: Sensor is touched
    OFF: Sensor is not touched    		 -

    OK: 

    When front passenger side is selected ON, ON (Sensor is touched) appears on the screen. 

    NG:  Go to step  7

    OK: Go to next step 

  6. 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 unlock function operates normally.

      OK: 

      Entry unlock function operates normally. 

    NG: REPLACE CERTIFICATION ECU ASSEMBLY 

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

  7. CHECK DOOR ELECTRICAL KEY OSCILLATOR FRONT RH 
    1. Measure the voltage of the oscillator connector.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      4 (SEL) - Body ground During Active Test Below 1 V
      6 (SENS) - Body ground Touch sensor is touched during Active Test Below 1 V
    Fig 1: Identifying Door Electrical Key Oscillator Connector Terminals LH
    G05299237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE CERTIFICATION ECU ASSEMBLY 

    NG: Go to next step 

  8. CHECK WIRE HARNESS (OSCILLATOR - ANTENNA) 
    1. Disconnect the p2 oscillator connector.
    2. Disconnect the p1 antenna connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      p2-2 (SGT) - p1-6 (SGT2) Below 1 Ω
      p2-3 (ANT1) - p1-5 (ANT1) Below 1 Ω
      p2-8 (ANT2) - p1-2 (ANT2) Below 1 Ω
      p2-9 (TRG-) - p1-1 (TRG-) Below 1 Ω
    Fig 2: Identifying P2 Oscillator And P1 Antenna Connector Terminals
    G05299242Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  9. CHECK WIRE HARNESS (ECU - OSCILLATOR) 
    1. Disconnect the U28 ECU connector.
    2. Disconnect the p2 oscillator connector.
    3. Measure the resistance of the wire harness connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U28-6 (SEL2) - p2-4 (SEL) Below 1 Ω
      U28-22 (SEN2) - p2-6 (SENS) Below 1 Ω
      U28-35 (CLG2) - p2-10 (CLG) Below 1 Ω
      U28-36 (CG2B) - p2-5 (CLGB) Below 1 Ω
    Fig 3: Identifying U28 ECU And P2 Oscillator Connector Terminals
    G05299243Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: REPLACE ELECTRICAL KEY OSCILLATOR FRONT RH 

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