Air Bag Component Description
DRIVER AIR BAG (INFLATOR) MODULEWARNING:
- Never attempt to disassemble or repair driver air bag (inflator) module. If any abnormality is found, be sure to replace it with new one as an assembly.
- When handling it, be sure to read SERVICE PRECAUTION under PRECAUTIONS.
Driver air bag (inflator) module consists of inflatable bag, inflator and trim cover, and is mounted to the center of steering wheel.
Driver inflator consists of initiator, burst disk and inflator gas tank. When vehicle is in a frontal crash of sufficient force, SDM causes current to flow through driver deployment loop. Current passing through the initiator causes a chemical reaction to occur. This chemical reaction generates pressure, depressing a burst disk which releases stored gas rapidly inflating air bag.
When inflatable bag deploys, its expansion force causes trim cover to open. Gas in the inflatable bag is let out through two exhaust holes in the back of bag at the right and left.
PASSENGER AIR BAG (INFLATOR) MODULE
WARNING:
- Never attempt to disassemble or repair passenger air bag (inflator) module. If any abnormality is found, be sure to replace it with new one as an assembly.
- When handling it, be sure to read SERVICE PRECAUTION and observe each instruction.
Passenger air bag (inflator) module consists of inflatable bag, inflator and trim cover, and is mounted above glove box in instrument panel on the passenger side.
Passenger inflator consists of initiator, burst disk and inflator gas tank. When vehicle is in frontal crash of sufficient force, SDM causes current to flow through passenger deployment loop. Current passing through initiator causes a chemical reaction to occur. This chemical reaction generates pressure, depressing burst disk which releases stored gas rapidly inflating air bag.
Once deployment starts, expansion force of the inflatable bag forces trim cover and move up.
Passenger Air Bag (Inflator) Module Connector
Driver Air Bag (Inflator) Module Connector
Contact Coil Connector
Lamp, Seat Belt, DLC Connector
Connector lock lever:
Functions of the connector lock lever are: to connect connectors securely, to cancel shorts and to lock connectors against disconnection.
Shorting bar:
Function of the shorting bar is to short circuit the "HI" and "LO" terminals of the initiator circuit on its module side when the connector is disconnected. This prevents potential difference from occurring between both terminals to avoid malfunction.
Terminal retainer (Terminal position assurance: TPA):
The function of the TPA is to keep the terminal securely seated in the connector body. The TPA is not to be removed from the connector body.
"AIR BAG" MONITOR COUPLER
"AIR BAG" monitor coupler has a diagnosis switch terminal and a ground terminal. With these terminals being shorted, "AIR BAG" warning lamp flashes to indicate the diagnostic trouble code.
(For details of diagnostic trouble code, DIAGNOSTIC TROUBLE CODE TABLE.)