Toyota Sequoia (2005). Manual - part 520

–

DIAGNOSTICS

BACK DOOR CONTROL SYSTEM

DI–1875

2069

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 the back door 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.
BACK–DOOR:

Item

Test details

Diagnostic note

P/W UP/DOWN

Operate the back door power window Motor UP/

DOWN

During this ACTIVE TEST, jam protection caught

detection can be monitored.

OK:

Back door power window operates normally.

OK

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

DI–1854

).

NG

2

Check back door power window motor (See page 

BE–75

).

NG

Replace the back door power window motor.

OK

DI–1876

–

DIAGNOSTICS

BACK DOOR CONTROL SYSTEM

2070

3

Check wire harness and connector between back door power window motor and
back 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–1854

).

I28433

Back Door ECU

DSG

B10

23

6

2

LG–B

B14
Back Door Power 
Window Motor

W–R

B10

11

DSV

5

3

PLS2

PLS1

SSRB

LG–R

P

B10

17

DS1

B10

16

DS2

E

Pulse
Sensor

–

DIAGNOSTICS

BACK DOOR CONTROL SYSTEM

DI–1877

2071

Back door power window pulse sensor circuit

CIRCUIT DESCRIPTION

Two pulse sensors are built into the back door power window motor. The back door ECU detects movement
and position of the back door window based on information from these pulse sensors.

WIRING DIAGRAM

DI94I–04

DI–1878

–

DIAGNOSTICS

BACK DOOR CONTROL SYSTEM

2072

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 the back door power window pulse sensor 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.
BACK–DOOR:

Item

Measurement Item/

Display (Range)

Normal Condition

Diagnostic Note

P/W POSITION

Back door power win-

dow position/CLOSE

or OPEN

CLOSE: Back door power window is fully closed

OPEN: Back door power window is opened

–

OK:

Indication on the tester switches between CLOSE and OPEN in accordance with the back door
power window status.

OK

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

DI–1854

).

NG

2

Check back door power window pulse sensor (See page 

BE–75

).

NG

Replace the back door power window regulator
assembly.

OK