Initial Inspection and Diagnostic Overview

As of software level B 01, the waiting time for service operations is reduced from 20 minutes to 5 minutes xxxx. As of manufacturing date June 12, 1992, the switch-on time of the airbag warning light is reduced from approx. 5 seconds to approx. 2.5 seconds.

Tools









Special Tools 9516 and 9516/1 are used to check the ignition pill circuits.

If there is a fault in the ignition pill circuits, attach Special Tool 9516 in place of the airbag units, then erase the fault memory. Switch the ignition off and on again.

The fault can then be identified by means of the diagnosis unit in the airbag control unit.

If the warning light no longer indicates a fault, the airbag unit is defective and must be replaced.

If the warning light again indicates a fault, the control unit or the wiring are at fault.

A fault in ignition pill circuit 1 may also be caused by the contact unit. Disconnect the wiring harness from the contact unit and attach Special Tool 9516/1 in place of the contact unit. Erase the fault memory. Switch the ignition off and then on again. If the warning light no longer indicates a fault, the contact unit is defective; if the warning light again indicates a fault, the control unit or the wiring are at fault.

Note: For safety reasons, never drive the vehicle with the special tools installed in place of the airbag units.





Special Tool 9541 is used to check the wiring of the airbag system. It is attached in place of the control unit. For safety reasons, the wiring to the ignition pills cannot be checked with this Tool.