Toyota Yaris: Seat Belt Warning System / System Diagram
SYSTEM DIAGRAM

Communication Table
| Sender | Receiver | Signal | Communication Method |
| Main body ECU (multiplex network body ECU) | Combination meter assembly | -
Front seat buckle switch signal (for Passenger side)
-
Rear seat belt buckle switch signal (LH/RH)
-
Front door courtesy light switch signal (LH/RH)
-
Parking brake switch
| CAN |
| Power Distribution Box Assembly | Main body ECU (multiplex network body ECU) | -
Front seat buckle switch signal (for Passenger side)
-
Rear seat belt buckle switch signal (LH/RH)
| CXPI |
| Skid control ECU (brake actuator assembly) | Combination meter assembly | Vehicle speed | CAN |
| ECM | Combination meter assembly | Gear position |
SYSTEM DESCRIPTION SEAT BELT WARNING SYSTEM DESCRIPTION (a) Seat belt warning light operation for driver seat belt: (1) The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the driver seat belt state, vehicle speed, shift lever position and parking brake state...
Other information:
UTILITY REFRIGERANT SHORTAGE CHECK USING GTS (a) Check that the following conditions are met and perform the refrigerant shortage check according to the display on the GTS. Measurement Condition: Item Condition A/C switch On Ambient temperature*1 0 to 49°C (32 to 120°F) Blower speed HI *1: If the ambient temperature is not within the range shown, do not perform this check...
BODY TIGHTEN BOLTS AND NUTS ON CHASSIS AND BODY (a) If necessary, tighten the bolts and nuts on the chassis parts listed below.
Front axle and suspension
Drivetrain
Rear axle and suspension
Brake system
Engine mounts
Other chassis parts
(b) If necessary, tighten the bolts and nuts on the body parts listed below...
Categories
Before refueling, close all the doors, windows, and the liftgate/trunk
lid, and switch the ignition OFF.
To open the fuel-filler lid, pull
the remote fuel-filler lid release.

To remove the fuel-filler cap, turn it counterclockwise.
Attach the removed cap to the
inner side of the fuel-filler lid.
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