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RESTRAINT SYSTEMS DESCRIPTION AND OPERATION 75-9 Operation - SRS The diagnostic and control unit (DCU) controls the SRS system. The DCU is located beneath the centre console close The SRS has diagnostic capabilities through TestBook. In the event that a fault is detected, the DCU alerts the driver The DCU controls the following: l SRS warning lamp. l Drivers airbag module. l Passenger airbag module (where fitted). l Driver seat belt pretensioner. l Passenger seat belt pretensioner. WARNING: The integrity of the SRS system are critical for safety reasons. Ensure the following precautions l Never install used SRS components from another vehicle or attempt to repair an SRS component. l When repairing an SRS system only use genuine new parts. l Never apply electrical power to an SRS component unless instructed to do so as part of an approved test l Special Torx bolts are necessary for installing the airbag module - do not use other bolts. Ensure bolts l Always use new fixings when replacing an SRS component. l Ensure the SRS Diagnostic Control Unit (DCU) is always installed correctly. There must not be any gap System deployment l The ignition switch is on. l The vehicle decelerates beyond a threshold defined within the DCU. l The electromechanical safing sensor within the DCU triggers. When all of the above conditions are met, the DCU deploys the airbag(s) and seat belt pretensioners. If the above Component replacement policy l DCU. l Driver and passenger airbag modules. l Driver and passenger buckle pretensioners. l Rotary coupler. l Flyleads (where applicable) connecting airbags and pre-tensioners to SRS harness SRS warning lamp ± 4 seconds for all fault conditions. The SRS warning lamp will only illuminate for low voltage concerns while the low voltage condition is present. If the |