Toyota Sequoia (2005). Manual — part 522
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
DI–1883
2077
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 the back door key lock and unlock 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.
BACK–DOOR:
Item
Measurement Item/
Display (Range)
Normal Condition
Diagnostic Note
KEY SW (UNLOCK)
Unlock SW linked with
the key/ON or OFF
ON: Back door lock is in unlock position
OFF: Back door lock is in lock position
–
KEY SW (LOCK)
Unlock SW linked with
the key/ON or OFF
ON: Back door lock is in lock position
OFF: Back door lock is in unlock position
–
UP/DOOR KEY
Back door key lock
and unlock switch
linked window open
and close/AVAIL or
NOT AVL
AVAIL: Key–linked open and close SET
NOT AVL: Key–linked open and close UNSET
*1
DOWN/DOOR KEY
Back door key lock
and unlock switch
linked window open
and close/AVAIL or
NOT AVL
AVAIL: Key–linked open and close SET
NOT AVL: Key–linked open and close UNSET
*1
*1: When the ignition key is not in the key cylinder and the back door is locked, turning and holding the back
door key in the lock position for 1.5 seconds or more activates the back door ECU to operate the power win-
dow motor and close the power window.
Similarly, turning and holding the back door key in the unlock position for 1.5 seconds or more when the back
door is unlocked will open the power window.
OK:
Indication on the tester switches between ON and OFF in accordance with the back door key
lock and unlock switch status.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
NG
DI–1884
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
2078
2
Check the back door key lock and unlock switch (See page
NG
Replace the back door key lock and unlock
switch.
OK
3
Check wire harness and connector between back door key lock and unlock
switch and back door ECU (See page
NG
Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page
I28435
Back Door ECU
P
1
2
L–R
R16
Rear Wiper Motor
L–B
3
3
L–W
W
SGND
12
18
B10
B10
B10
P
E
W
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DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
DI–1885
2079
Rear wiper limit switch circuit
CIRCUIT DESCRIPTION
The rear wiper limit switch is built in to the rear wiper motor. The W built in switch of the rear wiper motor is
ON when the rear wiper arm is in the position between stop and reverse and OFF when the rear wiper arm
is in any other position. The P built in switch of the rear wiper motor is OFF when the rear wiper arm is in
any position except stored and ON when the rear wiper arm is in the stored position.
WIRING DIAGRAM
DI94J–04
DI–1886
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
2080
INSPECTION PROCEDURE
1
Check rear wiper motor (See page
NG
Replace the rear wiper motor.
OK
2
Check wire harness and connector between rear wiper motor and back door ECU
(See page
).
NG
Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page
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