OCCUPANT CLASSIFICATION SYSTEM
System Diagram
System Description
THIS OCCUPANT CLASSIFICATION SYSTEM HAS THE FOLLOWING FUNCTION.- Suppress the deployment of front passenger air bag when front passenger seat is empty, or when occupied by child and child-seat. Turns on front passenger air bag OFF indicator when front passenger seat is occupied by child-seat and child.
- Indicates malfunction portion with blinking times of air bag warning lamp in diagnosis mode.
- Indicates the malfunctioning record by CONSULT-III.
NOTE：
Operation of air bag diagnosis sensor unit when air bag diagnosis sensor unit receives information from Occupant Classification System
|
Status (front passenger seat) |
Passenger air bag
|
Front passenger air bag OFF indicator
|
Air bag warning lamp
|
Seat belt warning lamp (when front passenger seat is unbuckled) |
|
Empty |
Suppress |
OFF |
OFF |
OFF |
|
Child/ child-seat |
Suppress |
ON |
OFF |
ON |
|
Adult |
Enable to deploy |
OFF |
OFF |
ON |
|
Malfunction |
Suppress |
ON |
Blinking |
OFF |
Component Parts Location
|
1. |
Air bag diagnosis sensor unit B37, B237, M147 |
2. |
Occupant Classification System control unit B253 |
3. |
Occupant Classification System seat sensor mat |
|
4. |
Passenger air bag OFF indicator M73 |
|
|
|
|
|
A. |
View with rear console assembly removed |
B. |
Front passenger seat |
|
|
|
Component parts |
Outline of function |
|
Occupant Classification System seat sensor mat |
Detects if the passenger seat is empty or occupied |
|
Occupant Classification System control unit |
Transmits the passenger seat status (occupied or empty) to air bag diagnosis sensor unit |
|
Front passenger air bag OFF indicator |
Turns the front passenger air bag OFF indicator lamp ON when the front passenger seat is occupied by a child or a child-seat |
|
Air bag diagnosis sensor unit |
Performs the deploy judgement of passenger air bag based on the information from Occupant Classification System control unit |