Entry And Start System Entry Unlock Function Does Not Operate On Front Passenger Side Door

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Door Lock. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MANUAL DOOR UNLOCK OPERATION

READ DATA LIST (DOOR COURTESY LIGHT SWITCH)

READ DATA LIST (LOCK POSITION SWITCH)

PERFORM ACTIVE TEST (FRONT PASSENGER SIDE SELECT)

READ DATA LIST (P TOUCH SENSOR)

CHECK OPERATION OF MULTIPLEX NETWORK DOOR ECU FRONT

CHECK DOOR ELECTRICAL KEY OSCILLATOR FRONT

CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR FRONT - DOOR ELECTRICAL KEY ANTENNA FRONT)

CHECK WIRE HARNESS (ECU - OSCILLATOR)

ENTRY AND START SYSTEM - Entry Unlock Function does not Operate on Front Passenger Side Door


DESCRIPTION

  1. LHD:
When an ID code from the door electrical key oscillator front RH matches an ID code from the key, the multiplex network door ECU front RH (front passenger door ECU) outputs a SEL signal (Lo when output) to the door electrical key oscillator front RH, activates the touch sensor inside the outside door handle, and enters unlock standby mode. When the touch sensor is touched, the door electrical key oscillator front RH sends a SENS signal (Lo when output) to the multiplex network door ECU front RH (front passenger door ECU) and the multiplex network door ECU front RH (front passenger door ECU) sends an unlock signal to the front passenger side door lock.
  1. RHD:
When an ID code from the door electrical key oscillator front LH matches an ID code from the key, the multiplex network door ECU front LH (front passenger door ECU) outputs a SEL signal (Lo when output) to the door electrical key oscillator front LH, activates the touch sensor inside the outside door handle, and enters unlock standby mode. When the touch sensor is touched, the door electrical key oscillator front LH sends a SENS signal (Lo when output) to the multiplex network door ECU front LH (front passenger door ECU) and the multiplex network door ECU front LH (front passenger door ECU) sends an unlock signal to the front passenger side door lock.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Unlock Function Does Not Operate On Front Passenger Side Door


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Unlock Function Does Not Operate On Front Passenger Side Door


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


2.READ DATA LIST (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 (LHD):
    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
    		-

    Multiplex network door ECU front LH (RHD):
    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


3.READ DATA LIST (LOCK POSITION SWITCH)

  1. Check the Data List for proper functioning of the door lock position switch.

    Multiplex network door ECU front RH (LHD):
    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
    		-

    Multiplex network door ECU front LH (RHD):
    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


4.PERFORM ACTIVE TEST (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:
    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


5.READ DATA LIST (P TOUCH SENSOR)

  1. With "P Select Sig" ON, check the Data List for proper functioning of the touch sensor.

    Certification ECU:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    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 is set to ON, ON (Sensor is touched) appears on the screen.


NG
Go to step 7
OK


6.CHECK OPERATION OF MULTIPLEX NETWORK DOOR ECU FRONT

  1. After replacing the multiplex network door ECU front 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 IS DEFECTIVE)

7.CHECK DOOR ELECTRICAL KEY OSCILLATOR FRONT
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Unlock Function Does Not Operate On Front Passenger Side Door

  1. Measure the voltage of the oscillator connector.

    Standard voltage:
    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


OK
REPLACE CERTIFICATION ECU ASSEMBLY
NG


8.CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR FRONT - DOOR ELECTRICAL KEY ANTENNA FRONT)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Unlock Function Does Not Operate On Front Passenger Side Door

  1. Disconnect the r2*1 or q2*2 oscillator connector.

  1. Disconnect the r1*1 or q1*2 antenna connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    r2-2 (SGT) - r1-6 (SGT2)*1
    q2-2 (SGT) - q1-6 (SGT2)*2
    		Below 1 Ω
    r2-3 (ANT1) - r1-5 (ANT1)*1
    q2-3 (ANT1) - q1-5 (ANT1)*2
    		Below 1 Ω
    r2-8 (ANT2) - r1-2 (ANT2)*1
    q2-8 (ANT2) - q1-2 (ANT2)*2
    		Below 1 Ω
    r2-9 (TRG-) - r1-1 (TRG-)*1
    q2-9 (TRG-) - q1-1 (TRG-)*2
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


9.CHECK WIRE HARNESS (ECU - OSCILLATOR)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Unlock Function Does Not Operate On Front Passenger Side Door

  1. Disconnect the V28 ECU connector.

  1. Disconnect the r2*1 or q2*2 oscillator connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    V28-6 (SEL2) - r2-4 (SEL)*1
    V28-6 (SEL2) - q2-4 (SEL)*2
    		Below 1 Ω
    V28-22 (SEN2) - r2-6 (SENS)*1
    V28-22 (SEN2) - q2-6 (SENS)*2
    		Below 1 Ω
    V28-35 (CLG2) - r2-10 (CLG)*1
    V28-35 (CLG2) - q2-10 (CLG)*2
    		Below 1 Ω
    V28-36 (CG2B) - r2-4 (CLGB)*1
    V28-36 (CG2B) - q2-4 (CLGB)*2
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE ELECTRICAL KEY OSCILLATOR FRONT