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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 › Rear Door LH 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 rear LH side door courtesy switches.

      Main body ECU RH: 

      NORMAL CONDITION CHART

      Item Measurement Item / Range (Display) Normal Condition
      RL DOR CTY SW Rear LH 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 rear LH: 

      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 (DRIVER SIDE REAR 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
      DR SELECT SIG Driver side rear select ON / OFF

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

    NG: REPLACE CERTIFICATION ECU 

    OK: GO TO Next Step 

  5. READ VALUE OF INTELLIGENT TESTER (DRIVER SIDE REAR TOUCH SENSOR) 
    1. With "DR 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
      DR TOUCH SENSOR Driver side rear door touch sensor / ON or OFF ON: Sensor is touched
      OFF: Sensor is not touched

      OK: When driver side rear 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 REAR LH 
    1. After replacing the multiplex network door ECU rear LH 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 REAR LH IS DEFECTIVE) 

  7. CHECK DOOR ELECTRICAL KEY OSCILLATOR REAR LH 
    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 Rear LH
      G05311027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE CERTIFICATION ECU 

    NG: GO TO Next Step 

  8. CHECK WIRE HARNESS (OSCILLATOR - ANTENNA) 
    1. Disconnect the s2 oscillator connector.
    2. Disconnect the s1 antenna connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      s2-2 (SGT) - s1-6 (SGT2) Below 1 Ω
      s2-3 (ANT1) - s1-5 (ANT1) Below 1 Ω
      s2-8 (ANT2) - s1-2 (ANT2) Below 1 Ω
      s2-9 (TRG-) - s1-1 (TRG-) Below 1 Ω
      s2-2 (SGT) or s1-6 (SGT2) - Body ground 10 kΩ or higher
      s2-3 (ANT1) or s1-5 (ANT1) - Body ground 10 kΩ or higher
      S2-8 (ANT2) or s1-2 (ANT2) - Body ground 10 kΩ or higher
      s2-9 (TRG-) or s1-1 (TRG-) - Body ground 10 kΩ or higher
      4. Fig 2: Identifying S2 Oscillator And S1 Antenna Connector Terminals
      G05311028Courtesy 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 U33 ECU connector.
    2. Disconnect the s2 oscillator connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      U33-1 (SEL3) - s2-4 (SEL) Below 1 Ω
      U33-28 (SEN3) - s2-6 (SENS) Below 1 Ω
      U33-8 (CLG3) - S2-10 (CLG) Below 1 Ω
      U33-9 (CG3B) - s2-5 (CLGB) Below 1 Ω
      U33-1 (SEL3) or s2-4 (SEL) - Body ground 10 kΩ or higher
      U33-28 (SEN3) or s2-6 (SENS) - Body ground 10 kΩ or higher
      U33-8 (CLG3) or S2-10 (CLG) - Body ground 10 kΩ or higher
      U33-9 (CG3B) or s2-5 (CLGB) - Body ground 10 kΩ or higher
      4. Fig 3: Identifying U33 ECU And S2 Oscillator Connector Terminals
      G05311029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE DOOR ELECTRICAL KEY OSCILLATOR REAR LH 

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