Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 435

SEAT BELT – SEAT BELT WARNING SYSTEM

SB–7

SB

PARTS LOCATION

COMBINATION METER ASSEMBLY

FRONT DRIVER SEAT BELT WARNING LIGHT

CENTER AIRBAG SENSOR ASSEMBLY

MAIN BODY ECU (DRIVER SIDE J/B)

DLC3

INTEGRATION CONTROL AND
PANEL ASSEMBLY

FRONT PASSENGER SEAT BELT
WARNING LIGHT

B137674E01

SB–8

SEAT BELT – SEAT BELT WARNING SYSTEM

SB

OCCUPANT CLASSIFICATION ECU

FRONT SEAT INNER BELT
ASSEMBLY (DRIVER SIDE)

FRONT OCCUPANT CLASSIFICATION
SENSOR LH

FRONT OCCUPANT
CLASSIFICATION
SENSOR RH

REAR OCCUPANT
CLASSIFICATION
SENSOR LH

REAR OCCUPANT
CLASSIFICATION
SENSOR RH

FRONT SEAT INNER BELT ASSEMBLY
(PASSENGER SIDE)

B137706E01

SEAT BELT – SEAT BELT WARNING SYSTEM

SB–9

SB

SYSTEM DIAGRAM

Communication table:

Sender

Receiver

Signal

Line

Center airbag sensor assembly

Combination meter assembly

Front seat inner belt switch signal

(passenger side)

CAN communication line

Occupant
Classification
ECU

Center Airbag
Sensor
Assembly

Front Occupant
Classification Sensor
LH

Front Occupant
Classification Sensor
RH

Rear Occupant
Classification Sensor
LH

Rear Occupant
Classification Sensor
RH

Combination Meter
Assembly

Front Passenger Seat
Belt Warning Light

Front Seat Inner Belt
Assembly (Driver
Side)

Front Seat Inner Belt
Assembly (Passenger
Side)

Main Body ECU
(Driver Side J/B)

Air Conditioning Amplifier

Integration Control and Panel Assembly

B137553E01

SB–10

SEAT BELT – SEAT BELT WARNING SYSTEM

SB

SYSTEM DESCRIPTION

1.

SEAT BELT WARNING SYSTEM DESCRIPTION
If a seat belt is not fastened, this system flashes the seat
belt warning light and sounds the seat belt warning
buzzer as a reminder.

2.

FUNCTIONS OF MAIN COMPONENTS

3.

SYSTEM OPERATION
•

When the ignition switch is ON, this system detects
the condition of the seat belts based on signals from
the front seat inner belt switches (for driver and front
passenger seats) and the occupant classification
sensor (front passenger side only).

Components

Function

Front Seat Inner Belt Assembly (Driver Side)

Informs combination meter assembly of driver seat belt condition
(fastened or unfastened)

Front Seat Inner Belt Assembly (Passenger Side)

Informs occupant classification ECU of front passenger seat belt
condition (fastened or unfastened)

Occupant Classification ECU

Informs center airbag sensor assembly of front passenger seat
condition (occupied or unoccupied)
Informs center airbag sensor assembly of front passenger seat belt
condition (fastened or unfastened)

Occupant Classification Sensor

Informs occupant classification ECU of front passenger seat condition

Center Airbag Sensor Assembly

Informs combination meter assembly of front passenger seat belt
condition (fastened or unfastened)

Combination Meter Assembly

The combination meter assembly transmits the passenger seat belt
warning light signal to the integration control and panel assembly
through the air conditioning amplifier.

Front Driver Seat Belt Warning Light

If driver seat belt is unfastened and ignition switch is ON, combination
meter assembly flashes seat belt warning light of combination meter
assembly as reminder

Front Passenger Seat Belt Warning Light

When front passenger seat is occupied and ignition switch is ON, if
passenger seat belt is unfastened, combination meter assembly
flashes seat belt warning light of integration control and panel
assembly as reminder

Seat Belt Warning Buzzer for Driver Side and Passenger Side

If driver or passenger seat belt is unfastened and ignition switch is ON
combination meter assembly sounds buzzer as reminder