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

DESCRIPTION

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

WIRING DIAGRAM

Power Door Lock Control System - All Doors Lock/Unlock Functions Do Not Operate Via Door Control Switch. DOOR LOCK. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1.READ VALUE USING INTELLIGENT TESTER (DOOR LOCK AND UNLOCK SWITCH)

Use the Data List to check if the door lock and unlock switches are functioning properly.

Main Body ECU
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Door Lock SW-Lock	Door manual lock switch signal / ON or OFF	ON: Front passenger side door control switch on (lock) OFF: Front passenger side door control switch off	-
Door Unlock SW-Unlock	Door manual unlock switch signal / ON or OFF	ON: Front passenger side door control switch on (unlock) OFF: Front passenger side door control switch off	-

OK:
On the intelligent tester screen, each item changes between ON and OFF according to above chart.

Go to step 4

OK

2.INSPECT FUSE (DOOR NO. 1, DOOR NO. 2)

Remove the DOOR NO. 1 fuse from the main body ECU (cowl side junction block LH).

Remove the DOOR NO. 2 fuse from the engine room relay block.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
DOOR NO. 1 fuse Always Below 1 Ω
DOOR NO. 2 fuse Always Below 1 Ω

REPLACE FUSE

OK

3.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)

Power Door Lock Control System - All Doors Lock/Unlock Functions Do Not Operate Via Door Control Switch. DOOR LOCK. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the 2A, 2B, and 2D ECU connectors.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
2A-1 (ALTB) - Body ground Always 11 to 14 V
2B-20 (BATB) - Body ground Always 11 to 14 V

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
2D-62 (GND2) - Body ground Always Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

4.INSPECT DOOR CONTROL SWITCH ASSEMBLY (DOOR LOCK AND UNLOCK SWITCH)

Power Door Lock Control System - All Doors Lock/Unlock Functions Do Not Operate Via Door Control Switch. DOOR LOCK. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Remove the door control switch ().

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Switch Condition Specified Condition
2 (UL) - 3 (E) Unlock Below 1 Ω
2 (UL) - 3 (E)
4 (L) - 3 (E) Off 10 kΩ or higher
4 (L) - 3 (E) Lock Below 1 Ω

REPLACE DOOR CONTROL SWITCH ASSEMBLY ()

OK

5.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR CONTROL SWITCH AND BODY GROUND)

Power Door Lock Control System - All Doors Lock/Unlock Functions Do Not Operate Via Door Control Switch. DOOR LOCK. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the 2D ECU connector.

Disconnect the I33 switch connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
2D-52 (UL1) - I33-2 (UL)	Always	Below 1 Ω
2D-49 (L1) - I33-4 (L)	Always	Below 1 Ω
I33-3 (E) - Body ground	Always	Below 1 Ω
I33-2 (UL) - Body ground	Always	10 kΩ or higher
I33-4 (L) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

Tester Connection	Switch Condition	Specified Condition
2 (UL) - 3 (E)	Unlock	Below 1 Ω
2 (UL) - 3 (E) 4 (L) - 3 (E)	Off	10 kΩ or higher
4 (L) - 3 (E)	Lock	Below 1 Ω