SUPPLEMENTARY RESTRAINT SYSTEM (SRS) 18 1.7.2.3. AIR BAGS A. DRIVER AIR BAG (DAB) The driver airbag module is located in the steering wheel and its function is controlled by the SRS ECU. A bag within the module inflates to protect the driver in the event of a collision severe enough to deploy the system. The driver airbag module connects to the steering column wiring harness via a rotary coupler called as clock spring. Within the driver airbag module is a squib which, when given the correct current by the SRS ECU, inflates the airbag by initiating a chemical reaction. In deployment, the airbag inflates within a fraction of a second and then deflate at a controlled rate as the driver body regions; typically head and chest interact with airbag. Vents in the airbag control its deflation. The SRS ECU regularly applies a test current to the driver airbag squib to confirm continuity of the ignition circuitry. ON VEHICLE SERVICE !! WARNING Always work on the air bag module from the side. Always carry the module with the cover side uppermost or away from the body in case being carried vertically. Do not attempt to repair, open or apply power (Multimeter) to the air bag module terminals. ! CAUTION Disconnect the battery negative lead. REMOVAL 1. Disconnect the battery connections. 2. Rotate steering wheel in 90-degree clockwise direction, insert screw driver from bottom cover to disengage DAB snap, rotate steering wheel in 90-degree anticlockwise direction, insert screw driver from bottom cover to disengage DAB 2nd snap. 3. Disconnect the DAB connector coming from clock spring and disconnect the horn pad connection and take out the DAB assembly from the vehicle. FITMENT For fitment follow reverse procedure of removal. ! CAUTION We need to press fit the airbag and it is to be insure that it is fitted properly. NOTE After fitment connect the diagnostic tool and clear all fault codes if any.
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