2001 TOYOTA SEQUOIA DLC3 Ts

DI±1786
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1980 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 key
in the back door key cylinder in the lock position for 1.5 seconds or more activates the driver door ECU to
operate the power window motor and close the power window.
Similarly, turning and holding the key in the back door key cylinder in the unlock position for 1.5 seconds or
more when the back door is unlocked will open the power window.
ItemMeasurement Item/Display (Range)Normal ConditionDiagnostic Note
MIR POS SEN VVertical mirror position/Min.: 0, Max.: 5Within range from 0 to 5 V±
MIR POS SEN HVertical mirror position/Min.: 0, Max.: 5Within range from 0 to 5 V±
2. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relay, actuator and so on to operate
without removal. Performing the ACTIVE TEST as the first step of troubleshooting is one of the methods 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.
D±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)
MIRR UP/DOWNMirror motor vertical operation UP/OFF/DOWN±
MIRR RIGHT/LEFTMirror motor horizontal operation RIGHT/OFF/
LEFT±

DI±1792
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
1986 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.
D±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±1782).
NG
2 Check door unlock detection switch (See page BE±79).
NG Replace the door lock assembly.
OK

± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1799
1993 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.
D±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±1782).
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 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±1782).

± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1801
1995 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.
D±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±1782).
NG
2 Check jam protection limit switch (jam protection function) (See page BE±69).
NG Replace the power window motor.
OK

DI±1806
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
2000 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 B1221 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.
D±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 window lock
switch status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1782).
NG
2 Check power main relay (See page BE±69).
NG Replace power main relay.
OK

± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±1813
2007 Author: Date:
2005 SEQUOIA (RM1146U)
Power window master switch circuit
CIRCUIT DESCRIPTION
The power window master switch circuit can be checked using the DTC check (refer to DI±1904).
INSPECTION PROCEDURE
1 Check the power window master 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.
D±DOOR:
ItemMeasurement Item/Dis-
play (Range)Normal ConditionDiagnostic Note
D 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±
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±
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±1782).
NG
Replace the driver door ECU.
DI94N±04

DIDEU±01
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
DI±1823
2017 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.
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 passenger power window auto UP/DOWN SW
is OFF
±
LIMIT SWJam protection limit SW/
ON or OFFON: Window is almost fully open
OFF: Window is open*1
LOCK POS SWLock position SW signal/
ON or OFFON: Door lock is in unlock position
OFF: Door lock is in lock position±
*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.
HINT:
The following data list can be used when the power window is operated through manual±up operation during
the ACTIVE TEST.
ItemMeasurement Item/Display (Range)Normal conditionDiagnostic Note
GRASS POS±1/4
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
closed and 1/4 open*2
GRASS POS±1/2
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
1/4 open and 1/2 open*2
GRASS POS±3/4
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
1/2 open and 3/4 open*2
GRASS POS±OPEN
Detects things caught in the P/W / OK or
CAUTION
(Displayed during the active test)OK: Nothing caught in the range between
3/4 open and fully open*2
HINT:
*2: If the CAUTION is displayed without applying any resistance in each range, there must be something
caught somewhere in that range.
ItemMeasurement Item/Display (Range)Normal conditionDiagnostic Note
MIR POS SEN VVertical mirror position/Min.: 0, Max.: 5Within range from 0 to 5 V±
MIR POS SEN HVertical mirror position/Min.: 0, Max.: 5Within range from 0 to 5 V±

DI±1824
± DIAGNOSTICSPASSENGER DOOR CONTROL SYSTEM
2018 Author: Date:
2005 SEQUOIA (RM1146U)
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 the first step of troubleshooting is one of the
methods 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.
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)
MIRR UP/DOWNMirror motor vertical operation UP/OFF/DOWN±
MIRR RIGHT/LEFTMirror motor horizontal operation RIGHT/OFF/
LEFT±