Entry And Start System Entry Lock And Unlock Functions Do Not Operate On Rear Door Lh

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MANUAL DOOR LOCK AND UNLOCK OPERATION

PERFORM ACTIVE TEST (DOOR ELECTRICAL KEY OSCILLATOR REAR LH)

CHECK WIRE HARNESS (CERTIFICATION ECU ASSEMBLY - DOOR ELECTRICAL KEY OSCILLATOR REAR LH)

CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR REAR LH - DOOR ELECTRICAL KEY ANTENNA REAR LH)

CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR REAR LH - MULTIPLEX NETWORK DOOR ECU REAR LH)

CHECK WIRE HARNESS (DOOR ELECTRICAL KEY ANTENNA REAR RH - MULTIPLEX NETWORK DOOR ECU REAR LH)

CHECK OPERATION OF ELECTRICAL KEY ANTENNA REAR LH

CHECK OPERATION OF DOOR ELECTRICAL KEY OSCILLATOR REAR LH

ENTRY AND START SYSTEM - Entry Lock and Unlock Functions do not Operate on Rear Door LH


DESCRIPTION

Both the entry lock and unlock functions do not operate when: 1) nothing is output from the door electrical key oscillator rear LH, 2) the entry and start system is disabled through customization, or 3) the entire power door lock control system is malfunctioning.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Lock And Unlock Functions Do Not Operate On Rear Door Lh


INSPECTION PROCEDURE

1.CHECK MANUAL DOOR LOCK AND UNLOCK OPERATION

  1. Check that the manual door lock and unlock function operates normally.

    OK:
    Manual door lock and unlock function operates normally.


NG
GO TO POWER DOOR LOCK CONTROL SYSTEM
OK


2.PERFORM ACTIVE TEST (DOOR ELECTRICAL KEY OSCILLATOR REAR LH)

  1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the oscillator operates.

    Certification ECU (LHD):
    Item
    		Test Details
    		Diagnostic Note
    DR Transmitter
    		Driver side rear transmitter ON / OFF
    		-

    Certification ECU (RHD):
    Item
    		Test Details
    		Diagnostic Note
    PR Transmitter
    		Passenger side rear transmitter ON / OFF
    		-
    OK:
    When key is brought close to door oscillator that is OFF, indicator light on key illuminates.


OK
REPLACE CERTIFICATION ECU ASSEMBLY
NG


3.CHECK WIRE HARNESS (CERTIFICATION ECU ASSEMBLY - DOOR ELECTRICAL KEY OSCILLATOR REAR LH)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Lock And Unlock Functions Do Not Operate On Rear Door Lh

  1. Disconnect the V33 ECU connector.

  1. Disconnect the s2 oscillator connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    V33-8 (CLG3) - s2-10 (CLG)*1
    V33-10 (CLG4) - s2-10 (CLG)*2
    		Below 1 Ω
    V33-9 (CG3B) - s2-5 (CLGB)*1
    V33-11 (CG4B) - s2-5 (CLGB)*2
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


4.CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR REAR LH - DOOR ELECTRICAL KEY ANTENNA REAR LH)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Lock And Unlock Functions Do Not Operate On Rear Door Lh

  1. Disconnect the s2 oscillator connector.

  1. Disconnect the s1 antenna connector.

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

    Standard resistance:
    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


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


5.CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR REAR LH - MULTIPLEX NETWORK DOOR ECU REAR LH)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Lock And Unlock Functions Do Not Operate On Rear Door Lh

  1. Disconnect the s2 oscillator connector.

  1. Disconnect the Q3 ECU connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    s2-1 (+B) - Q3-7 (OSCB)
    		Below 1 Ω
    s2-7 (GND) - Q3-20 (OSCE)
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


6.CHECK WIRE HARNESS (DOOR ELECTRICAL KEY ANTENNA REAR RH - MULTIPLEX NETWORK DOOR ECU REAR LH)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Lock And Unlock Functions Do Not Operate On Rear Door Lh

  1. Disconnect the s1 antenna connector.

  1. Disconnect the Q3 ECU connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    s1-3 (TRG+) - Q3-18 (TRG+)
    		Below 1 Ω


NG
REPLACE ELECTRICAL KEY ANTENNA REAR LH
OK


7.CHECK OPERATION OF ELECTRICAL KEY ANTENNA REAR LH

  1. After replacing the electrical key antenna rear LH with a normal one, check that the entry lock and unlock functions operate normally.

    OK:
    Entry lock and unlock functions operate normally.


NG
END (ELECTRICAL KEY ANTENNA REAR LH IS DEFECTIVE)
OK


8.CHECK OPERATION OF DOOR ELECTRICAL KEY OSCILLATOR REAR LH

  1. After replacing the electrical key oscillator rear LH with a normal one, check that the entry lock and unlock functions operate normally.

    OK:
    Entry lock and unlock functions operate normally.


NG
REPLACE CERTIFICATION ECU ASSEMBLY
OK

END (DOOR ELECTRICAL KEY OSCILLATOR REAR LH IS DEFECTIVE)