System Description

The Airbag System consists of the following components:
- Triggering Unit
- Contact Unit
- Driver Airbag Unit
- Passenger Airbag Unit
- Warning Lamp
A self-test is run after the ignition is switched ON. The warning lamp is activated during the self-test. If no faults are stored in the fault memory the warning lamp will go out after approximately 5 seconds.

A maximum of 10 faults can be stored. The duration is also stored for the first 5 faults.

A differentiation is made between crash-relevant faults and non-crash relevant faults. Faults that are not crash-relevant are indicated by a longer duration illumination of the warning lamp, approximately 2 minutes after the ignition is switched ON. Such faults will not affect the operation of the airbag system.

A crash-relevant fault is indicated by continuous illumination of the warning lamp after the ignition is switched ON.

The Triggering Unit covers the following functions:
- Crash detection and determination of ignition point
- Ignition of the airbag system
- Recording of crash data
- Self-test and permanent monitoring of the airbag system
- Fault storage
- Fault display
- Fault output
- System readiness display

The triggering unit must be replaced only after the third time the airbag is triggered or if the fault memory can no longer be cleared.

If the triggering unit is exchanged, the data record for the appropriate vehicle must be loaded with the System Tester and the triggering unit must be locked.

The warning light flashes before locking. The warning light goes out following locking (if no fault is present).