Toyota Sequoia (2005). Manual — part 498

DI1PA–08

I28392

Power Window Master Switch

Driver Door ECU

Power Window Switch

Door Lock Control Switch

Window Lock Switch

Door Courtesy Light

Door Lock Assembly

Door Lock Motor

Door Unlock Detection

Switch

Power Window Motor

Pulse Sensor

Limit Switch

Door Courtesy Light Switch

Driver door ECU is the same with power window master switch.

Door Key Lock and
Unlock Switch

Remote Control Mirror
(w/ Driving Position Memory)

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

DI–1787

1981

PARTS LOCATION

DI1PD–10

I28457

F10
Fusible Link Block

Engine Room J/B

Sub J/B No. 3

SHORT PIN

D22
Driver Door ECU

SIG

21

A

W–L

B–R

9

IB1

J/C

W–R

ECU–B

Battery

IE

B–R

A

B–R

Instrument Panel J/B

ECU–IG

4

1F

I18
Ignition SW

IG1

AM1

4

1C

B–Y

2

1

6

1C

AM1

ALT

L–W

PWR No. 1

2

1

1

1L

1

1F

5

8

W

4

B

13

IB1

L–W

BDR

CPUB

GND

Instrument Panel J/B

2

1E

3

1J

8

2C

1

2D

W–R

1

3A

1

3C

W–R

1

IB1

W–R 23

B

A

J8
J/C

W–B

J/C

D

J6

F

J7

W–B

13

25

B–R

J37

J38

Sub J/B No. 3

3A

3C

8

8

DI–1788

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

1982

CIRCUIT INSPECTION

Power source circuit

CIRCUIT DESCRIPTION

This circuit provides power to operate the driver door ECU.

WIRING DIAGRAM

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

DI–1789

1983

INSPECTION PROCEDURE

1

Check ECU–IG, AM1, PWR No. 1 and ECU–B fuse.

CHECK:
Check continuity of the ECU–IG, AM1, PWR No. 1 and ECU–B fuse.
OK:

Continuity

NG

Replace the faulty fuse.

OK

2

Check voltage between terminals BDR, CPUB, SIG and GND of driver door ECU
connector.

PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals SIG and GND of the driver door ECU of the wire harness side con-
nector.
OK:

Voltage: 10 to 14 V

PREPARATION:
(a)

Turn the ignition switch OFF.

(b)

Disconnect the driver door ECU connector.

CHECK:
Measure the voltage between terminals BDR, CPUB and GND of the driver door ECU of the wire harness
side connector.
OK:

Voltage: 10 to 14 V

OK

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

DI–1782

).

NG

DI–1790

–

DIAGNOSTICS

DRIVER DOOR CONTROL SYSTEM

1984

3

Check wire harness and connector (Driver door ECU – body ground, 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–1782

).