Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly (Manual Operation And Key-Linked Lock Are Activated)

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ENTRY AND START SYSTEM

READ VALUE OF INTELLIGENT TESTER (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE))

INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)

CHECK WIRE HARNESS (MULTIPLEX NETWORK BODY ECU - DOOR COURTESY LIGHT SWITCH)

POWER DOOR LOCK CONTROL SYSTEM - Key Lock-in Prevention Function does not Work Properly (Manual Operation and Key-Linked Lock are Activated)


DESCRIPTION

When the transmitter is in the vehicle or the door courtesy light ON signal is output to the ECU, performing the door lock operation with the lock switch on the outer handle will not lock the door.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly (Manual Operation And Key-Linked Lock Are Activated)


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly (Manual Operation And Key-Linked Lock Are Activated)


INSPECTION PROCEDURE

1.CHECK ENTRY AND START SYSTEM

  1. Check that each function of the entry door lock operates normally by using the lock switch.

    OK:
    Entry door lock is functioning normally.


NG
GO TO ENTRY AND START SYSTEM
OK


2.READ VALUE OF INTELLIGENT TESTER (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE))

  1. Check the Data List for proper functioning of the door courtesy light switch.


Multiplex network body ECU:

Item
Measurement Item/Display (Range)
Normal Condition
Diagnostic Note
D Door Courtesy SW
Driver side door courtesy light switch signal/ON or OFF
ON: Driver side door is unlocked
OFF: Driver side door is locked
-
OK:
ON (driver side door is unlocked) appears on screen.


NG
Go to step 3
OK

REPLACE COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU)

3.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly (Manual Operation And Key-Linked Lock Are Activated)

  1. Remove the courtesy light switch.

  1. Measure the resistance of the switch.

    Standard resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - Body ground
    		Not pushed (ON)
    		Below 1 Ω
    1 - Body ground
    		Pushed (OFF)
    		10 kΩ or higher


NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)
OK


4.CHECK WIRE HARNESS (MULTIPLEX NETWORK BODY ECU - DOOR COURTESY LIGHT SWITCH)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System Key Lock-In Prevention Function Does Not Work Properly (Manual Operation And Key-Linked Lock Are Activated)

  1. Disconnect the V1 ECU connector.

  1. Disconnect the W7*1 or V4*2 switch connector.

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

    Standard resistance:
    LHD
    Tester Connection
    		Specified Condition
    V1-14 (DCTY) - W7-1
    		Below 1 Ω
    RHD:
    Tester Connection
    		Specified Condition
    V1-14 (DCTY) - V4-1
    		Below 1 Ω
    HINT:
    *1: LHD
    *2: RHD


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU)