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

SEAT BELT  –  SEAT BELT WARNING SYSTEM

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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

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SEAT BELT  –  SEAT BELT WARNING SYSTEM

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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

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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

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SEAT BELT  –  SEAT BELT WARNING SYSTEM

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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