Toyota Sequoia (2005). Manual — part 521
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
DI–1879
2073
3
Check wire harness and connector between back door power window pulse sen-
sor 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
I28434
Back Door ECU
R16
Rear Wiper Motor
WIP–
4
5
L–Y
L–O
WIP+
1
2
B10
B10
R
F
DI–1880
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
2074
Rear wiper motor circuit
CIRCUIT DESCRIPTION
The wiper motor is controlled by the back door ECU.
WIRING DIAGRAM
DI94K–04
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
DI–1881
2075
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 rear wiper 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.
BACK–DOOR:
Item
Test details
Diagnostic note
REAR WIPER
Operate the rear wiper motor ON/OFF
–
OK:
Rear wiper motor operates normally.
OK
Proceed to next circuit inspection shown in
problem symptom table (See page
NG
2
Check rear wiper motor (See page
NG
Replace the rear wiper motor.
OK
3
Check wire harness and connector between 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
I18725
Back Door ECU
BKUL
1
2
G
B12
Back Door Key Lock and Unlock SW
3
R–W
L
KEYE
BKL
5
4
B10
19
B10
B10
DI–1882
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
2076
Back door key lock and unlock switch circuit
CIRCUIT DESCRIPTION
The back door ECU operates the back door lock motor based on information from the back door key lock
and unlock switch.
The back door power window goes up when the key is inserted into the cylinder and turned to the LOCK
position. The window goes down when the key is turned to the UNLOCK position.
WIRING DIAGRAM
DI94L–05
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