Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 439

SEAT BELT – SEAT BELT WARNING SYSTEM

SB–23

SB

DATA LIST / ACTIVE TEST

1.

READ DATA LIST
HINT:
By accessing the DATA LIST using the intelligent tester,
values of the switches and sensors can be read without
removing any parts. Reading the DATA LIST is the first
step of troubleshooting and is one method of shortening
labor time.
(a) Connect the intelligent tester with the CAN VIM to

the DLC3.

(b) Turn the ignition switch ON and turn the tester ON.
(c) Enter the DATA LIST by following the prompts

displayed on the tester screen.

Center Airbag Sensor Assembly

Occupant Classification ECU

Item

Measurement Item/

Range (Display)

Normal Condition

Diagnostic Note

D BUCKLE SW

Buckle switch (Driver side)/
UNSET: Seat belt not fastened
SET: Seat belt fastened
NG: Data not determined

UNSET/SET

-

P BUCKLE SW

Buckle switch (Front passenger
side)/
UNSET: Seat belt not fastened
SET: Seat belt fastened
NG: Data not determined

UNSET/SET

-

PASSENGER CLASS

Front passenger classification/
NG: Data is not determined
OFF: Vacant
CHILD: Child (Less than 36 kg
[79.37 lb]) seated
AF05: Adult (36 to 54 kg [79.37 to
119.05 lb]) seated
AM50: Adult (More than 54 kg
[119.05 lb]) seated
FAIL: Failure detected

NG/OFF/CHILD/AF05/AM50/

FAIL

-

Item

Measurement Item/

Range (Display)

Normal Condition

Diagnostic Note

P BUCKLE SW

Buckle switch (Front passenger
side)/
UNSET: Front passenger side
seat belt is unfastened
SET: Front passenger side seat
belt is fastened
NG: Front passenger side seat
belt is malfunctioning

UNSET/SET

-

PASSENGER CLASS

Front passenger classification/
AM50: Adult (more than 54 kg
(119.05 lb)) is seated
AF05: Adult (36 to 54 kg (79.37 to
119.05 lb)) is seated
CHILD: Child (less than 36 kg
(79.37 lb)) is seated
CRS: Child restraint system (less
than 7 kg (15.43 lb)) and front
passenger side buckle switch ON,
then 7 to 36 kg (15.43 to 79.37 lb)
is set
OFF: Vacant

AF05/AM50/CHILD/CRS/OFF

-

SB–24

SEAT BELT – SEAT BELT WARNING SYSTEM

SB

Main Body ECU (Driver Side J/B)

Item

Measurement Item/

Range (Display)

Normal Condition

Diagnostic Note

D SEAT BUCKL SW

Buckle switch (Driver side)/

ON: Seat belt fastened

OFF: Seat belt not fastened

ON/OFF

-

SEAT BELT – SEAT BELT WARNING SYSTEM

SB–25

SB

DESCRIPTION

When the ignition switch is ON, the combination meter assembly receives signals from the front seat inner
belt assembly (driver side). When the seat belt is unfastened, the combination meter assembly flashes the
driver seat belt warning light in the combination meter assembly. When the seat belt is fastened, the
combination meter assembly stops flashing the front driver seat belt warning light.

WIRING DIAGRAM

INSPECTION PROCEDURE

(a) Connect the intelligent tester with the CAN VIM to the

DLC3.

(b) Turn the ignition switch ON and turn the tester ON.
(c) Enter the following menus: OBD/MOBD / BODY / DATA

LIST

Main Body ECU (Driver Side J/B)

OK:

Front seat inner belt assembly (driver side)
operates normally.

NG

Driver Side Seat Belt Warning Light does not Operate

1

READ VALUE OF INTELLIGENT TESTER (D SEAT BUCKL SW)

Main Body ECU
(Driver Side J/B)

DBKL

L

Combination Meter Assembly

Front Seat Inner Belt Assembly (Driver Side)

RDC

+

E

To Front Seat Outer Belt (Driver Side)

B137675E01

Item

Measurement Item/ Range

(Display)

Normal Condition

Diagnostic Note

D SEAT BUCKL SW

Buckle switch (Driver side)/
ON: Seat belt fastened
OFF: Seat belt not fastened

ON/OFF

-

Go to step 3

SB–26

SEAT BELT – SEAT BELT WARNING SYSTEM

SB

OK

(a) Disconnect the E13 combination meter assembly

connector.

(b) Disconnect the L19 front seat inner belt assembly (driver

side) connector.

(c) Measure the resistance.

Standard resistance

(d) Reconnect the combination meter assembly connector.
(e) Reconnect the front seat inner belt assembly (driver

side) connector.

NG

OK

(a) Disconnect the L19 front seat inner belt assembly (driver

side) connector.

(b) Measure the resistance.

Standard resistance

(c) Reconnect the front seat inner belt assembly (driver

side) connector.

NG

2

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT SEAT
INNER BELT ASSEMBLY)

Wire Haeness Side:

Front Seat Inner Belt Assembly
(Driver Side) Connector

Combination Meter Assembly Connector

Front View

Front View

E13

L19

+

L

B137678E01

Tester Connection

Specified Condition

E13-8 (L) - L19-3 (+)

Below 1

Ω

E13-8 (L) or L19-3 (+) - Body ground

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR
CONNECTOR

REPLACE COMBINATION METER ASSEMBLY

3

INSPECT FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)

Component Side:

Front Seat Inner Belt Assembly
(Driver Side) Connector

+

E

RDC

B137709E02

Tester Connection

Condition

Specified Condition

+ - E

Tongue plate fastened

10 k

Ω or higher

RDC - E

Tongue plate

unfastened

Below 1

Ω

+ - E

Tongue plate

unfastened

Below 1

Ω

RDC - E

Tongue plate fastened

10 k

Ω or higher

REPLACE FRONT SEAT INNER BELT
ASSEMBLY (DRIVER SIDE)