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Home › Lexus › 2007 › GS 450h › 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

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 SWITCH) 
    1. Check the DATA LIST for proper functioning of the front passenger side door courtesy switches.

      Main body ECU RH: 

      NORMAL CONDITION CHART

      Item Measurement Item / Range (Display) Normal Condition
      P DOR CTY SW Front passenger side courtesy switch / ON or OFF ON: Courtesy switch is pushed
      OFF: Courtesy switch is not pushed

      OK: ON (door courtesy 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: 

      NORMAL CONDITION CHART

      Item Measurement Item / Range (Display) Normal Condition
      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 REFERENCE CHART

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

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

    NG: REPLACE CERTIFICATION ECU 

    OK: GO TO Next Step 

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

      Certification ECU: 

      NORMAL CONDITION CHART

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

      OK: When front passenger side door touch sensor is touched, 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 

    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 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      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
      2. Fig 1: Checking Door Electrical Key Oscillator Front RH
      G05299237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE CERTIFICATION ECU 

    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 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      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
      p2-2 (SGT) or p1-6 (SGT2) - Body ground 10 kΩ or higher
      p2-3 (ANT1) or p1-5 (ANT1) - Body ground 10 kΩ or higher
      p2-8 (ANT2) or p1-2 (ANT2) - Body ground 10 kΩ or higher
      p2-9 (TRG-) or p1-1 (TRG-) - Body ground 10 kΩ or higher
      4. Fig 2: Identifying Q2 Oscillator And P1 Antenna Connector Terminals
      G05311024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR 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 side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      U28-6 (SEL2) - p2-4 (SEL) Below 1 Ω
      U28-23 (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
      U28-6 (SEL2) or p2-4 (SEL) - Body ground 10 kΩ or higher
      U28-23 (SEN2) or p2-6 (SENS) - Body ground 10 kΩ or higher
      U28-35 (CLG2) or p2-10 (CLG) - Body ground 10 kΩ or higher
      U28-36 (CG2B) or p2-5 (CLGB) - Body ground 10 kΩ or higher
      4. Fig 3: Identifying U28 ECU And P2 Oscillator Connector Terminals
      G05311025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE DOOR ELECTRICAL KEY OSCILLATOR FRONT RH 

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