Toyota Sequoia (2005). Manual — part 517
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
DI–1863
2057
3
Check wire harness and connector between back door ECU and battery
(See page
).
NG
Repair or replace wire harness or connector.
OK
4
Check wire harness and connector between back door ECU and body ground
(See page
).
NG
Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptoms table
(See page
I18726
Back Door ECU
BDCY
B10
7
2
1
W–B
B9
Back Door Courtesy Light Switch
CTYE
B10
20
R
DI–1864
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
2058
Back door courtesy light switch circuit
CIRCUIT DESCRIPTION
The back door courtesy light switch is built in the back door lock assembly.
This switch comes on when the back door is opened and goes off when the back door is closed.
WIRING DIAGRAM
DI57K–07
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
DI–1865
2059
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 courtesy light 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
COURTSY SW
Back door courtesy
light SW signal/ON or
OFF
ON: Back door is open
OFF: Back door is closed
–
OK:
Indication on the tester switches between ON and OFF in accordance with the courtesy light
switch status.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
NG
2
Check back door courtesy light switch (See page
NG
Replace the back door lock assy.
OK
DI–1866
–
DIAGNOSTICS
BACK DOOR CONTROL SYSTEM
2060
3
Check wire harness and connector between back door courtesy light 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
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