Power Door Lock Control System All Doors Lock / Unlock Functions Do Not Operate Via Door Control Switch

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (FR DOOR RH*1, FR DOOR LH*2, MPX-B, D/C CUT)

CHECK WIRE HARNESS (PASSENGER DOOR ECU - BATTERY AND BODY GROUND)

INSPECT DOOR CONTROL SWITCH ASSEMBLY

CHECK WIRE HARNESS (DOOR CONTROL SWITCH ASSEMBLY - PASSENGER DOOR ECU)

REPLACE PASSENGER DOOR ECU

POWER DOOR LOCK CONTROL SYSTEM - All Doors LOCK / UNLOCK Functions do not Operate Via Door Control Switch


DESCRIPTION

The multiplex network body ECU receives switch signals from the door control switch and activates the door lock motor on each door according to the signals.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System All Doors Lock / Unlock Functions Do Not Operate Via Door Control Switch


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System All Doors Lock / Unlock Functions Do Not Operate Via Door Control Switch


INSPECTION PROCEDURE

1.INSPECT FUSE (FR DOOR RH*1, FR DOOR LH*2, MPX-B, D/C CUT)

  1. Remove the FR DOOR RH*1 fuse from the cowl side junction block RH.

  1. Remove the FR DOOR LH*2 fuse from the cowl side junction block LH.

  1. Remove the MPX-B and D/C CUT fuses from the engine room No. 1 junction block.

  1. Measure the resistance of the fuses.

    Standard resistance:
    Below 1 Ω
    HINT:
    *1: LHD
    *2: RHD


NG
REPLACE FUSE
OK


2.CHECK WIRE HARNESS (PASSENGER DOOR ECU - BATTERY AND BODY GROUND)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System All Doors Lock / Unlock Functions Do Not Operate Via Door Control Switch

  1. Disconnect the N4*1 or O3*2 ECU connector.

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    LHD
    Tester Connection
    		Specified Condition
    N4-6 (BDR) - N4-1 (GND)
    		10 to 14 V
    N4-4 (CPUB) - N4-1 (GND)
    		10 to 14 V
    RHD:
    Tester Connection
    		Specified Condition
    O3-6 (BDR) - O3-1 (GND)
    		10 to 14 V
    O3-4 (CPUB) - O3-1 (GND)
    		10 to 14 V

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

    Standard resistance:
    LHD
    Tester Connection
    		Specified Condition
    N4-1 (GND) - Body ground
    		Below 1 Ω
    RHD:
    Tester Connection
    		Specified Condition
    O3-1 (GND) - Body ground
    		Below 1 Ω
    HINT:
    *1: LHD
    *2: RHD


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.INSPECT DOOR CONTROL SWITCH ASSEMBLY
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System All Doors Lock / Unlock Functions Do Not Operate Via Door Control Switch

  1. Remove the door control switch.

  1. Measure the resistance of the switch.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2 - 3
    		Lock
    		Below 1 Ω
    4 - 3
    		Unlock
    		Below 1 Ω
    2 - 3
    		Unlock
    		10 kΩ or higher
    4 - 3
    		Lock
    		10 kΩ or higher


NG
REPLACE DOOR CONTROL SWITCH ASSEMBLY
OK


4.CHECK WIRE HARNESS (DOOR CONTROL SWITCH ASSEMBLY - PASSENGER DOOR ECU)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Power Door Lock Control System All Doors Lock / Unlock Functions Do Not Operate Via Door Control Switch

  1. Disconnect the R3*1 or S8*2 switch connector.

  1. Disconnect the N3*1 or O4*2 ECU connector.

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

    Standard resistance:
    LHD
    Tester Connection
    		Specified Condition
    R3-3 (E) - N3-21 (DLE)
    		Below 1 Ω
    R3-4 (UL) - N3-23 (PMUL)
    		Below 1 Ω
    R3-2 (L) - N3-22 (PNL)
    		Below 1 Ω
    R3-5 (IND) - N3-24 (PWS)
    		Below 1 Ω
    RHD:
    Tester Connection
    		Specified Condition
    S8-3 (E) - O4-21 (DLE)
    		Below 1 Ω
    S8-4 (UL) - O4-23 (PMUL)
    		Below 1 Ω
    S8-2 (L) - O4-22 (PNL)
    		Below 1 Ω
    S8-5 (IND) - O4-24 (PWS)
    		Below 1 Ω
    HINT:
    *1: LHD
    *2: RHD


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


5.REPLACE PASSENGER DOOR ECU

  1. After replacing the passenger door ECU with a normal one, check that all doors can be locked and unlocked by using the door control switch.

    OK:
    All doors can be locked and unlocked with door control switch.


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

END (PASSENGER DOOR ECU IS FAULTY)