Driver Air Bag (Inflator) Module

WARNING:
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".




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.