Toyota Corolla Cross: System Diagram
SYSTEM DIAGRAM
Communication Table
|
Transmitting ECU / Parts (Transmitter) |
Receiving ECU (Receiver) |
Signal | Communication Method |
|
Passenger Seat Buckle Switch (Front Seat Inner Belt Assembly RH) |
Airbag ECU Assembly | Front passenger side buckle switch signal |
Direct line |
|
Passenger Airbag ON/OFF Indicator (Map Light Assembly) |
Airbag ECU Assembly |
- Passenger airbag indicator ON signal
- Passenger airbag indicator OFF signal
|
| Front Occupant Classification Sensor LH (Front Seat Cushion Spring Sub-assembly RH) |
Airbag ECU Assembly |
Occupant load for front passenger signal |
LIN |
| Rear Occupant Classification Sensor LH (Front Seat Cushion Spring Sub-assembly RH) |
Airbag ECU Assembly |
|
Skid Control ECU (Brake Actuator Assembly) |
Airbag ECU Assembly |
- Vehicle speed signal
- Acceleration signal
| CAN |
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SYSTEM DESCRIPTION GENERAL (a) The airbag ECU assembly estimates the weight of an occupant based on signals received from the 2 occupant classification sensors. The airbag ECU assembly determines whet
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the occupant classification system.
*: Use the GTS.
PROCEDURE
1. VEHICLE BROUGHT TO WORKSHOP
OPERATION CHECK CHECK SRS WARNING LIGHT (a) Primary check
(1) Turn the ignition switch to ON and check that the SRS warning light turns on.
(2) Turn the ignition switch off. Wait for at least 2 s
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DESCRIPTION
This DTC is stored when the skid control ECU (brake actuator
assembly) receives an internal malfunction signal from the steering sensor.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
DTC Output from
DESCRIPTION These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly and ECM, skid control ECU (brake actuator assembly), main body ECU (multiplex network body ECU), hybrid vehicle control ECU, combination meter assembly or option conn
