TOYOTA SEQUOIA 2001 Service Repair Manual

I28437
D21
Door Unlock Detection
SW Front RH
3 R±Y4
LSWP
LSWE W±B 4Front Passenger
Door ECU
13 24
9 F18 F18
F18 F18
*1: w/ Driving Position Memory
*2: w/o Driving Position Memory(*1) (*2)
(*1) (*2)
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1829
2023 Author: Date:
2005 SEQUOIA (RM1146U)
Door unlock detection switch circuit
CIRCUIT DESCRIPTION
The door unlock detection switch is built in the door lock motor. This switch is ON when the door lock knob
is in the unlock position and OFF when the lock knob is in the lock position. The ECU detects the door lock
knob conditions in this circuit. It is used as one of the operating conditions for the key confinement prevention
function.
WIRING DIAGRAM
DI1Q8±09

DI±1830
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2024 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:
When using the hand±held tester, start the inspection from step 1 and when not using the hand±held tester,
start from step 2.
1 Check door unlock detection switch using hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
CHECK:
According to the display on the tester, read the DATA LIST.
P±DOOR:
ItemMeasurement Item/Dis-
play (Range)Normal conditionDiagnostic Note
LOCK POS SWLock position SW signal/
ON or OFFON: Door lock is in unlock position
OFF: Door lock is in lock position±
OK:
Indication on the tester switches between ON and OFF in accordance with the door unlock
detection switch status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1818).
NG
2 Check door unlock detection switch (See page BE±79).
NG Replace the door lock assembly.
OK

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1831
2025 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check wire harness and connector between door unlock detection switch and
passenger door ECU (See page IN±35).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1818).

I28438
D21
Door Key Lock and
Unlock SW Front RH
LSWE
PKUL
PKL 13
2
3 W±B
LG±R
LG±B 4
1
2Front Passenger
Door ECU
F18 F18
*1: w/ Driving Position Memory
*2: w/o Driving Position Memory(*1) (*2)
F18 F18
F18 F189
10
22 (*1) (*2)
(*1) (*2) DI±1832
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2026 Author: Date:
2005 SEQUOIA (RM1146U)
Door key lock and unlock switch circuit
CIRCUIT DESCRIPTION
The door key lock and unlock switch is built in the door lock motor. When the key is turned to the lock side,
terminal 2 of the switch is grounded and when the key is turned to the unlock side, terminal 1 of the switch
is grounded.
The door key lock and unlock switch can be checked using the DTC check (refer to DI±1904).
WIRING DIAGRAM
DI1Q9±09

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1833
2027 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check the door key lock and unlock switch (See page BE±79).
NG Replace the door key lock and unlock switch.
OK
2 Check wire harness and connector between door key lock and unlock switch
and passenger door ECU (See page IN±35).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1818).

I28439
D11
Door Courtesy
Light Front RH
CTYB
PCYL 6
5 R
R±W1 2Front Passenger Door
ECU
*1: w/ Driving Position Memory
*2: w/o Driving Position Memory(*1) (*2)5 5
6 F18 F18
F18F18
(*1) (*2) DI±1834
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2028 Author: Date:
2005 SEQUOIA (RM1146U)
Door courtesy light circuit
CIRCUIT DESCRIPTION
The door courtesy light comes on when the door is opened and goes off when the door is closed.
WIRING DIAGRAM
DI1QA±09

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1835
2029 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check door courtesy light operation.
CHECK:
Check that the door courtesy light comes on when the door is opened, and goes off when the door is closed.
OK:
Door courtesy light normally operates.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1818).
NG
2 Check door courtesy light (See page BE±40).
NG Replace the door courtesy light.
OK
3 Check wire harness and connector between door courtesy light and passenger
door ECU (See page IN±35).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1818).

I28440
G
R 1
2PDN
PU 9
1Front Passenger
Door ECU P7
Power Window Motor
Front RH
*1: w/ Driving Position Memory
*2: w/o Driving Position MemoryF18
F18
(*1) (*2)
1 14
F18
F18
(*1) (*2) DI±1836
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2030 Author: Date:
2005 SEQUOIA (RM1146U)
Power window motor circuit
CIRCUIT DESCRIPTION
The power window goes down when voltage is applied to terminal 1 of the power window motor, and the
window goes up when voltage is applied to terminal 2.
WIRING DIAGRAM
DI1QB±10

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1837
2031 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:
When using the hand±held tester, start the inspection from step 1 and when not using the hand±held tester,
start from step 2.
1 Check power window motor using hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
CHECK:
According to the display on the tester, perform the ACTIVE TEST.
P±DOOR:
ItemTest DetailsDiagnostic Note
P/W UP/DOWNDrive the P/W Motor UP/DOWN
During this ACTIVE TEST, jam protection,
caught detection can be monitored.
(Refer to the DATA LIST for details)
OK:
Power window operates normally.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1818).
NG
2 Check power window motor (See page BE±69).
NG Replace the power window motor.
OK
3 Check wire harness and connector between power window motor and passenger
door ECU (See page IN±35).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1818).

I28441
W±B
L±W 5
4 Limit SWSGND
LMT 18
16Front Passenger
Door ECU P7
Power Window Motor
Front RH
*1: w/ Driving Position Memory
*2: w/o Driving Position MemoryF18
F18
(*1) (*2)
F18
F18
(*1) (*2)4
2 DI±1838
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2032 Author: Date:
2005 SEQUOIA (RM1146U)
Jam protection limit switch circuit
CIRCUIT DESCRIPTION
The jam protection limit switch, built in the power window motor, turns off before top dead center. The ECU
reads this ºOFFº signal and fully closes the window.
WIRING DIAGRAM
DI1QC±08