2001 TOYOTA SEQUOIA Page 18

± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1865
2059 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 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:
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
COURTSY SW
Back door courtesy
light SW signal/ON or
OFFON: 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 DI±1854).
NG
2 Check back door courtesy light switch (See page BE±40).
NG Replace the back door lock assy.
OK

DI±1866
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2060 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check wire harness and connector between back door courtesy light switch and
back 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±1854).

DI±1868
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2062 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check luggage room light (See page BE±40).
NG Replace the luggage room light.
OK
2 Check wire harness and connector between luggage room light and back door
ECU (See page IN±35).
NG Repair or replace wire harness or connector.
OK
3 Check wire harness and connector between luggage room light and battery
(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±1854).

DI±1870
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2064 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 the back 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.
BACK±DOOR:
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
LOCK POS SW
Back door lock posi-
tion SW signal/ON or
OFFON: Back door lock is in unlock position
OFF: Back door lock is in lock position±
OK:
Indication on the tester switches between ON and OFF in accordance with the back door unlock
detection switch status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1854).
NG
2 Check back door unlock detection switch (See page BE±79).
NG Replace the back door unlock detection switch.
OK

± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1871
2065 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check wire harness and connector between back door unlock detection switch
and back 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±1854).

± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1873
2067 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 the back door lock 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:
ItemTest detailsDiagnostic note
DOOR LOCKOperate the door lock motor at rear door LOCK/
UNLOCK±
OK:
Back door lock motor operates normally.
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI±1854).
NG
2 Check back door lock motor (See page BE±79).
NG Replace the back door lock motor.
OK
3 Check wire harness and connector between back door lock motor and back 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±1854).

± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1875
2069 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 the back door 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.
BACK±DOOR:
ItemTest detailsDiagnostic note
P/W UP/DOWNOperate the back door power window Motor UP/
DOWNDuring this ACTIVE TEST, jam protection caught
detection can be monitored.
OK:
Back door power window operates normally.
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI±1854).
NG
2 Check back door power window motor (See page BE±75).
NG Replace the back door power window motor.
OK

DI±1876
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2070 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check wire harness and connector between back door power window motor and
back 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±1854).