Posted by Owen Aaland on August 27, 2014 at 11:14:04 from (216.47.34.49):
In Reply to: Air bags posted by Russ from MN on August 26, 2014 at 19:34:11:
Most air bag systems use two switches to activate an air bag deployment. The deceleration switch is usually located somewhere inside the passenger compartment and closes only when the vehicle slows quickly. This is generally faster than can be accomplished with just braking. A second switch is designed to close under impact. There may be more than one impact switch but only one needs to close if the deceleration switch is also closed. If only one or he other closes the air bags should not be set off.
The other thing that set off the air bags is improper servicing. The system is designed to maintain enough electrical energy to be able to set off the bags even if disconnected from the rest of the electrical system That is why it is important to follow the correct procedures when working on the system. Generally one or two connectors neat the bag will be designed to short the wires together when disconnected If the system is disconnected elsewhere first it is possible that they will deploy unexpectedly.
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