Page 1993 of 4323
I18711
D20
Door Unlock Detection
SW Front LHD22
Driver Door ECU
LSWD
LSWE 24
9 R±Y
W±B
34
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1791
1985 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
DI1PG±16
Page 1994 of 4323
DI±1792
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1986 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.
D±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±1782).
NG
2 Check door unlock detection switch (See page BE±79).
NG Replace the door lock assembly.
OK
Page 1995 of 4323
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1793
1987 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check wire harness and connector between door unlock detection switch and
driver 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±1782).
Page 1996 of 4323
I18710
D22
Driver Door ECU
D20
Door Key Lock and
Unlock SW Front LH
LSWE
KUL
KL 9
10
22 W±B
LG±R
LG±B 3
6
5 DI±1794
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1988 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 5 of the switch is grounded and when the key is turned to the unlock side, terminal 6 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
DI1PH±17
Page 1997 of 4323
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1795
1989 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 driver 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±1686).
Page 1998 of 4323
I18709
D22
Driver Door ECU
D10
Door Courtesy Light Front LH
CTYB
DCYL 5
6 R
R±W 1 2 DI±1796
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1990 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
DI1PI±18
Page 1999 of 4323
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1797
1991 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±1782).
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 driver 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±1782).
Page 2000 of 4323
I28452
D22
Driver Door ECU P6
Power Window Motor
Front LH
DDN
DU 14
1 G
R 2
1 DI±1798
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1992 Author: Date:
2005 SEQUOIA (RM1146U)
Power window motor circuit
CIRCUIT DESCRIPTION
The power window goes down when voltage is applied to terminal 2 of the power window motor, and the
window goes up when voltage is applied to terminal 1.
WIRING DIAGRAM
DI1PJ±09