Toyota Sequoia (2005). Manual - part 481

–

DIAGNOSTICS

BODY CONTROL SYSTEM

DI–1719

1913

INSPECTION PROCEDURE

1

Check back door power window control switch (See page 

BE–75

).

NG

Replace back door power window control
switch.

OK

2

Check wire harness and connector between back door power window control
switch and body 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–1686

).

I24353

Body ECU

BC1

ACT–

J11

J10

D18
Door Lock Motor
Rear LH

J10

J10

J10

J11

J11

J11

J11

B5

B5

B7

ACT+

IB1

BC1

BA1

2

ACTD

L–B

10

9

L–B

L–B

L–B

L–B

L–R

L–R

L–R

L–R

L–R

L–R

D21
Door Lock 
Motor
Front RH

D20
Door Lock 
Motor Front
LH

D19
Door Lock 
Motor Rear RH

L–B

L–R

L–R

R–B

L–B

L–B

L–B

L–R

L–R

R–B

2

6

5

1

2

4

3

2

1

13

C

A

12

10

C

D

D

A

E

E

E

10

1

II2

IB1

BA1

II2

10

9

J/C

L–R

J/C

K

D

N

G

J45

J44

D

J

J/C

J34

J33

C

J/C

I

J34

J33

J45

J44

DI–1720

–

DIAGNOSTICS

BODY CONTROL SYSTEM

1914

Door lock motor circuit

CIRCUIT DESCRIPTION

The body ECU actuates the door lock motor when it receives a motor drive signal from the wireless transmit-
ter or an ECU via BEAN.

WIRING DIAGRAM

DI573–11

–

DIAGNOSTICS

BODY CONTROL SYSTEM

DI–1721

1915

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 lock motor using hand–held tester.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch ON.

CHECK:
(a)

According to the display on the tester, perform the ”ACTIVE TEST”.

BODY ECU:

Item

Test Details

Diagnostic Note

DOOR LOCK

Door lock LOCK/UNLOCK

All doors are closed.

OK:

All door lock motors lock or unlock the doors correctly when operating them through the hand–
held tester.

OK

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

DI–1686

).

NG

2

Check door lock motor (See page 

BE–79

).

NG

Replace door lock motor.

OK

DI–1722

–

DIAGNOSTICS

BODY CONTROL SYSTEM

1916

3

Check wire harness and connector between door lock motor and body 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–1686

).