Air Bag Systems: Testing and Inspection

To ensure proper system operation on any vehicle involved in a collision, all system components should be inspected for dents, cracks, exposure to excessive heat and other damage even if deployment did not take place. The steering column, knee pad and instrument panel reinforcement plate should be inspected for damage. All air bag system wiring should be checked for chaffing and interference with other vehicle components. Do not attempt to repair forward discriminating sensor, passenger compartment discriminating sensor, arming sensor, DERM, coil assembly, SIR module or mounting brackets. If found to be damaged, replace with a new unit. To ensure proper operation of the SIR system, the vehicle structure must be returned to its original configuration. When repairing vehicle, the SIR system should be disarmed as outlined under Technician Safety Information. Also, when performing service procedure, do not expose components or wiring to heat guns, welding or spray guns.