Triggering Unit - System B 04

The triggering unit has the following functions:
- Crash recognition and triggering time calculation
- Triggering the airbag system
- Recording the crash data
- Self-test and permanent monitoring of the airbag system
- Fault storage
- Fault display
- Fault output
- System readiness display

The triggering unit need not be replaced until after the third time the airbag is triggered or if the fault memory can no longer be cleared.

If the triggering unit is replaced, the data record for the appropriate vehicle must be loaded with the Porsche System Tester 2 and the triggering unit must be locked. Refer to Sytem Tester Displays, Testing and Inspection
The warning light flashes before locking. The warning light goes out after locking was performed successfully (if no fault is present).

After the airbag triggering unit is replaced, the coding must be adapted to the vehicle equipment. Refer to Modify Coding. Testing and Inspection