Toyota Sequoia (2005). Manual - part 512

I28443

F18
Front Passenger Door ECU

D22
Driver Door ECU

WLSW

7

R–L

E

J7

J/C

E

J6

R–L

R–L

II1

5

LSW

7

–

DIAGNOSTICS

PASSENGER DOOR CONTROL SYSTEM

DI–1843

2037

Window lock switch circuit

CIRCUIT DESCRIPTION

The power window lock switch circuit can be checked using the DTC check (refer to 

DI–1904

).

The window lock switch is built in the passenger door ECU. Voltage applied to the LSW terminal of the pas-
senger door ECU is shut off when the window lock switch is turned to the LOCK position. The power main
relay stops power supply to the other power window control switches.

WIRING DIAGRAM

DI1PE–16

DI–1844

–

DIAGNOSTICS

PASSENGER DOOR CONTROL SYSTEM

2038

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:

Item

Measurement Item/Dis-

play (Range)

Normal condition

Diagnostic Note

P P/W AUTO SW

P/W auto SW signal/

ON or OFF

ON: P/W auto UP/DOWN SW is ON

OFF: P/W auto UP/DOWN SW is OFF

–

LOCK POS SW

Lock position SW signal/

ON or OFF

ON: 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

).

I28444

R18
Remote Control Mirror RH

Front Passenger Door ECU

PM+R

PMVR

PMHR

F18

15

17

16

L–W

LG–B

LG–R

7

6

8

M+

MV

MH

F18

F18

–

DIAGNOSTICS

PASSENGER DOOR CONTROL SYSTEM

DI–1845

2039

Remote control mirror motor RH circuit (w/ Driving position
memory)

CIRCUIT DESCRIPTION

SEQUOIA features a driving position memory function, and up to 2 driver positions can be memorized.
The passenger door ECU operates 2 motors built into the remote control mirror. The motors move the mirror
to the memorized positions based on information from the position sensor.

WIRING DIAGRAM

DIDEV–01

DI–1846

–

DIAGNOSTICS

PASSENGER DOOR CONTROL SYSTEM

2040

INSPECTION PROCEDURE

1

Check remote control mirror motor (See page 

BE–115

).

NG

Replace outer mirror motor.

OK

2

Check wire harness and connector between remote mirror motor and driver door
ECU (See page 

IN–35

).

NG

Repair or replace harness or connector.

OK

Proceed to next circuit inspection shown in
problem symptoms table (See page 

DI–1818

).