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Entry Unlock Function does not Operate on Driver Side Door: Wiring Diagram

Fig 1: Entry Unlock Function Does Not Operate On Driver Side Door - Wiring Diagram
G04021959Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 driver side door courtesy light switch.

      Multiplex network master switch assembly: 

      MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

      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 master switch assembly: 

      MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

      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 (DRIVER 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 - TEST DETAILS

      Item Test Details Diagnostic Note
      D SELECT SIG Driver side select / ON or OFF -

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

    NG : REPLACE CERTIFICATION ECU ASSEMBLY 

    OK : GO TO NEXT STEP 

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

      Certification ECU: 

      CERTIFICATION ECU

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

      OK : When driver 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 MASTER SWITCH ASSEMBLY 
    1. After replacing the multiplex network master switch assembly 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 MASTER SWITCH ASSEMBLY IS DEFECTIVE) 

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

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      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 2: Identifying Connector Terminals
      G04021960Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE CERTIFICATION ECU ASSEMBLY 

    NG : GO TO NEXT STEP 

  8. CHECK WIRE HARNESS (OSCILLATOR - ANTENNA) 
    1. Disconnect the q2 oscillator connector.
    2. Disconnect the q1 antenna connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      q2-2 (SGT) - q1-6 (SGT2) Below 1 Ω
      q2-3 (ANT1) - q1-5 (ANT1) Below 1 Ω
      q2-8 (ANT2) - q1-2 (ANT2) Below 1 Ω
      q2-9 (TRG-) - q1-1 (TRG-) Below 1 Ω
      Fig 3: Identifying Q1 Antenna Connector And Q2 Oscillator Connector
      G04021961Courtesy 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 q2 oscillator connector.
    3. Measure the resistance of the wire harness connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      U28-5 (SEL1) - q2-4 (SEL) Below 1 Ω
      U28-22 (SEN1) - q2-6 (SENS) Below 1 Ω
      U28-33 (CLG1) - q2-10 (CLG) Below 1 Ω
      U28-34 (CG1B) - q2-5 (CLGB) Below 1 Ω
      Fig 4: Identifying U28 ECU Connector And Q2 Oscillator Connector
      G04021962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : REPLACE ELECTRICAL KEY OSCILLATOR FRONT LH 

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