Power Door Lock Control System Only Passenger Door Lock / Unlock Functions Do Not Operate

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FRONT DOOR LOCK MOTOR)

INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE)

READ VALUE OF INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)

INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE) (DOOR LOCK POSITION SWITCH)

CHECK WIRE HARNESS (PASSENGER DOOR ECU - FRONT DOOR LOCK ASSEMBLY)

POWER DOOR LOCK CONTROL SYSTEM - Only Passenger Door LOCK / UNLOCK Functions do not Operate


DESCRIPTION

The passenger door ECU receives lock/unlock switch signals and activates the door lock motor according to the signals.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System  Only Passenger Door Lock / Unlock Functions Do Not Operate


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System  Only Passenger Door Lock / Unlock Functions Do Not Operate


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FRONT DOOR LOCK MOTOR)
  1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the door lock motor operates.


Passenger door ECU:

Item
Test Details
Diagnostic Note
Door Lock
Operate door lock motor LOCK/UNLOCK
-
OK:
Door locks/unlocks.


NG
Go to step 2
OK

REPLACE PASSENGER DOOR ECU

2.INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE)

Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System  Only Passenger Door Lock / Unlock Functions Do Not Operate

  1. Apply battery voltage to the door lock motor and check the operation of the door lock motor.

    OK:
    LHD (w/ Double locking system)
    Measurement Condition
    Specified Condition
    Battery positive (+) → Terminal 2
    Battery negative (-) → Terminal 1
    Lock
    Battery positive (+) → Terminal 1
    Battery negative (-) → Terminal 2
    Unlock
    LHD (w/o Double locking system):
    Measurement Condition
    Specified Condition
    Battery positive (+) → Terminal 4
    Battery negative (-) → Terminal 1
    Lock
    Battery positive(+) → Terminal 1
    Battery negative (-) → Terminal 4
    Unlock
    RHD (w/ Double locking system):
    Measurement Condition
    Specified Condition
    Battery positive (+) → Terminal 4
    Battery negative (-) → Terminal 3
    Lock
    Battery positive (+) → Terminal 3
    Battery negative (-) → Terminal 4
    Unlock
    RHD (w/o Double locking system):
    Measurement Condition
    Specified Condition
    Battery positive (+) → Terminal 4
    Battery negative (-) → Terminal 1
    Lock
    Battery positive (+) → Terminal 1
    Battery negative (-) → Terminal 4
    Unlock


NG
REPLACE FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE)
OK


3.READ VALUE OF INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)
  1. Check the Data List for proper functioning of the door lock position switch.


Passenger door ECU:

Item
Measurement Item/Display (Range)
Normal Condition
Diagnostic Note
Lock Pos SW
Passenger side door lock position switch signal/ON or OFF
ON: Passenger side door is unlocked
OFF: Passenger side door is locked
-
OK:
ON (passenger side door is unlocked) appears on screen.


NG
Go to step 4
OK

REPLACE PASSENGER DOOR ECU

4.INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE) (DOOR LOCK POSITION SWITCH)

Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System  Only Passenger Door Lock / Unlock Functions Do Not Operate

  1. Measure the resistance of the position switch.

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    7 - 8
    Unlock
    Below 1 Ω
    7 - 8
    Lock
    10 kΩ or higher


NG
REPLACE FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE)
OK


5.CHECK WIRE HARNESS (PASSENGER DOOR ECU - FRONT DOOR LOCK ASSEMBLY)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System  Only Passenger Door Lock / Unlock Functions Do Not Operate
  1. Disconnect the N3*1 or O4*2 ECU connector.

  1. Disconnect the N6*1 or O6*2 door lock connector.

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

    Standard resistance:
    LHD
    Tester Connection
    Specified Condition
    N3-1 (A-) - N6-1 (UL)
    Below 1 Ω
    N3-2 (A+) - N6-2 (L)*3
    Below 1 Ω
    N3-2 (A+) - N6-4 (L)*4
    Below 1 Ω
    N3-14 (LSW) - N6-7 (LSSR)
    Below 1 Ω
    N3-13 (LSWE) - N6-8 (E)
    Below 1 Ω
    RHD:
    Tester Connection
    Specified Condition
    O4-1 (A-) - O6-3 (UL)*3
    Below 1 Ω
    O4-1 (A-) - O6-1 (UL)*4
    Below 1 Ω
    O4-1 (A+) - O6-4 (L)
    Below 1 Ω
    O4-14 (LSW) - O6-7 (LSSR)
    Below 1 Ω
    O4-13 (LSWE) - O6-8 (E)
    Below 1 Ω
    HINT:
    *1: LHD
    *2: RHD
    *3: w/ Double locking system
    *4: w/o Double locking system


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE PASSENGER DOOR ECU