S60 2.4 L5-2.4L VIN 61 B5244S (2001)
Air Bag Control Module: Description and Operation
SRS Module
SRS module
The SRS unit continually transmits diagnostic pulses to all SRS components. The diagnostic pulses check that there are no wiring short-circuits or other
faults in the SRS system. In the event of a fault the SRS lamp lights. (The SRS lamp also lights briefly (approximately 7 s) when the ignition is switched
on. During this time the SRS module starts up the side impact sensors, runs self diagnostics and diagnostics of other SRS components and charges the
SRS system's ignition capacitor).
The bracket for the module must be rigidly secured in the body and welded (with as high resonance frequency as possible greater than 300 Hz).
The SRS module can still deploy up to 10 seconds after any power failure.
In the event of a collision, the SRS module transmits a signal so that the central locking system opens (if locked), passenger compartment lighting
switches on, hazard warning signal flashers operate and fuel supply is shut off.
