Testing and Repair Instructions - After Accident

Important Instructions to be Observed During Testing and Repairs and Following Accidents:
1. Before Starting body repairs; welding; and work on the airbag restraint system, steering wheel, airbag unit, control unit and belt tensioner:
- The battery negative terminal must be disconnected and covered.
- The 10-pin test coupling for the airbag plug connection (color red) in the right-hand footwell must be disconnected 2 s after disconnecting the battery.
2. Following an accident, the individual components must be renewed if the following conditions are met:
- Visible deformation or damage to the housing.
- Deformation to the control unit support bracket (even if the control unit appears to be intact).
- If an electrical fault is discovered during testing.
- Not triggered, but damaged airbag and belt tensioner units.
- Triggered airbag and belt tensioner units.
- If pulse display 10 appears (vehicles as of 09/87).

NOTE: Damaged or faulty components must not be repaired, but must always be renewed.
If the driver airbag unit has been triggered, the steering wheel must always be replaced.
If the front passenger's airbag (if equipped) has been triggered then replace the mounting frame as well as the airbag.

3. There are no particular safety regulations to be observed in the event of paintwork with subsequent heat drying, as the entire airbag and belt tensioner restraint system has been designed in such a way that no damage can occur from heating up the vehicle.
4. After working on the airbag and belt tensioner restraint system, the system (in vehicles up to 09/87) must be checked using the tester, or (in vehicles as of 09/87) by means of the pulse display. Pulse display 1 indicates that no fault is stored, i.e. the system is in order.

NOTES:
- In vehicles as of 09/87, the belt tensioners are not incorporated into the pulse display and these must be specially tested following renewal of one or both belt tensioners. [1][2]Component Tests and General Diagnostics
- When removing one or both front seats (the plug connection to the belt buckles must be disconnected) with the ignition in position 1 or 2, the RS or SRS warning lamp lights up and goes out again when the seats have been reinstalled. This is stored as a fault (pulse display 5 or 6).
- The memory must be cleared.