2001 TOYOTA SEQUOIA DLC3 Ts

DI±1830
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2024 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.
P±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±1818).
NG
2 Check door unlock detection switch (See page BE±79).
NG Replace the door lock assembly.
OK

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1837
2031 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 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.
P±DOOR:
ItemTest DetailsDiagnostic Note
P/W UP/DOWNDrive the P/W Motor UP/DOWN
During this ACTIVE TEST, jam protection,
caught detection can be monitored.
(Refer to the DATA LIST for details)
OK:
Power window operates normally.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1818).
NG
2 Check power window motor (See page BE±69).
NG Replace the power window motor.
OK
3 Check wire harness and connector between power window motor and passenger
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±1818).

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1839
2033 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 jam protection limit 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.
P±DOOR:
ItemMeasurement Item/Dis-
play (Range)Normal conditionDiagnostic Note
LIMIT SWJam protection limit SW/
ON or OFFON: Window is almost fully open
OFF: Window is open*1
*1: If the jam protection limit switch is turned ON, the jam protection function will stop.
Even if the switch is not turned ON when the windows are almost fully open, the window will not fully close
as jam protection operates at upper window positions during automatic±up operation.
OK:
Indication on the tester switches between ON and OFF in accordance with the jam protection
limit switch status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1818).
NG
2 Check jam protection limit switch (Jam protection function) (See page BE±69).
NG Replace the power window motor.
OK

DI±1844
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2038 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.
Check if DTC B1223 of the multiplex communication system is output. When the DTC is not output, proceed
to the following procedures and when it is output, perform inspection (see page DI±1904).
1 Check window lock 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.
P±DOOR:
ItemMeasurement Item/Dis-
play (Range)Normal conditionDiagnostic Note
P P/W AUTO SWP/W auto SW signal/
ON or OFFON: P/W auto UP/DOWN SW is ON
OFF: P/W auto UP/DOWN SW is OFF±
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 window lock
switch status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1818).
NG
2 Check wire harness and connector between passenger door ECU 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±1818).

± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1849
2043 Author: Date:
2005 SEQUOIA (RM1146U)
Power window switch circuit
CIRCUIT DESCRIPTION
The power window switch circuit can be checked using the DTC check (refer to DI±1904).
INSPECTION PROCEDURE
1 Check the power window 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.
P±DOOR:
ItemMeasurement Item/Dis-
play (Range)Normal conditionDiagnostic Note
P P/W AUTO SW
Front passenger power
window auto SW signal/
ON or OFFON: Front passenger power window auto UP/DOWN SW
is ON
OFF: Front door power window auto UP/DOWN SW is
OFF
±
OK:
Indication on the tester switches between ON and OFF in accordance with the window auto up
operation status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1818).
NG
Replace the passenger door ECU.
DI94M±05

DID9I±01
DI±1858
± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
2052 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
According to the DATA LIST displayed by the hand±held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
of the methods to shorten labor time.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) 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±
LOCK POS SWLock position SW sig-
nal/ON or OFFON: Door lock is in unlock position
OFF: Door lock is in lock position±
WIPER TURN SW
Rear wiper reversing
position switch/ON or
OFFON: Rear wiper reverse position
OFF: Rear wiper non±reverse position±
WIPER RTRCT SWRear wiper position
switch/ON or OFFON: Rear wiper arm in store position
OFF: Rear wiper arm not in store position±
KEY SW (UNLOCK)Unlock SW linked with
the key/ON or OFFON: 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 OFFON: 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
P/W POSITION
Back door power win-
dow position/CLOSE
or OPENCLOSE: Back door power window is fully closed
OPEN: Back door power window is opened±
GLASS POS±1/4
Back door power win-
dow glass position
(Fully closed ± 1/4
open): OK or CAU-
TIONOK: Power window is going UP by manual operation
CAUTION: CAUTION may be displayed even when no resis-
tance is applied in each position. In this case there is a for-
eign object stuck in that position.
±
GLASS POS±2/4
Back door power win-
dow glass position
(Fully closed ± 2/4
open): OK or CAU-
TIONOK: Power window is going UP by manual operation
CAUTION: CAUTION may be displayed even when no resis-
tance is applied in each position. In this case there is a for-
eign object stuck in that position.
±
GLASS POS±3/4
Back door power win-
dow glass position
(Fully closed ± 3/4
open): OK or CAU-
TIONOK: Power window is going UP by manual operation
CAUTION: CAUTION may be displayed even when no resis-
tance is applied in each position. In this case there is a for-
eign object stuck in that position.
±

± DIAGNOSTICSBACK DOOR CONTROL SYSTEM
DI±1859
2053 Author: Date:
2005 SEQUOIA (RM1146U)
*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.
2. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one of the meth-
ods to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) 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.
(Refer to the DATA LIST for details)
DOOR LOCKOperate the door lock motor at rear door LOCK/
UNLOCK±
REAR WIPEROperate the rear wiper motor ON/OFF±

± 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