Toyota Sequoia (2005). Manual - part 502

I28454

D22
Driver Door ECU

P6
Power Window Motor
Front LH

Pulse Sensor

SGND

PLS

4

3

W–B

L–R

5

3

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

DI–1803

1997

Jam protection pulse sensor circuit

CIRCUIT DESCRIPTION

The jam protection pulse sensor, built in the power window motor, outputs a ON/OFF pulse when the motor
rotates.

WIRING DIAGRAM

DI1PL–09

DI–1804

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

1998

INSPECTION PROCEDURE

1

Check the jam protection pulse sensor circuit using DTC check (See page

DI–1904

).

CHECK:
Check if DTC B1232 of the multiplex communication system is output.
OK:

DTC is not output.

OK

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

DI–1782

).

NG

2

Check jam protection pulse sensor (See page 

BE–69

).

NG

Replace the power window motor.

OK

3

Check wire harness and connector between jam protection pulse sensor 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

).

I24364

D22
Driver Door ECU

P4 Power Window
Control SW Rear RH

F18
Front Passenger Door ECU

F10
Fusible Link Block

P3 Power Window Control
SW Rear LH

E

B

L–O

5

W–B

PWR No. 4

R–L

WLSW

U

D

3

5

2

4

BC1

A

J46

L–O

L–O

13

BC1

W–B

U

D

5

2

G

R

2

1

B

L–Y

5

BA1

L–Y

G

J30

L–Y

7

1G

8

1F

16

1F

PWR No. 3

3

5

2

1

1

1L

9

1F

E

J6

E

J7

E

J6

7

R–L

R–L

R–L

II1

LSW

W–B

Battery

J8
J/C

IE

A

W–B

BK

W

8

5

B

BA1

13

W–B

BH

ALT

G

R

2

1

3

E

Power Main Relay

Instrument Panel J/B

J/C

P9
Power
Window
Motor
Rear
RH

P8
Power
Window
Motor
Rear
LH

7

4

5

N

J/C

J/C

E

J29

J47

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

DI–1805

1999

Window lock switch circuit

CIRCUIT DESCRIPTION

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

DI–1904

).

The window lock switch is built in the driver door ECU. Voltage applied to the WLSW terminal of the driver
door ECU is shut off when the window lock switch is turned to the LOCK position. Thus the power main relay
stops power supply to the other power window control switches.

WIRING DIAGRAM

DI1PE–15

DI–1806

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

2000

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:

Item

Measurement Item/Dis-

play (Range)

Normal Condition

Diagnostic Note

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–1782

).

NG

2

Check power main relay (See page 

BE–69

).

NG

Replace power main relay.

OK