Repairing airbag and belt tensioner wiring — AUDI

Repairing airbag and belt tensioner wiring
In addition to the general notes on repairing wiring harnesses, observe the following instructions for repairing wiring in the airbag and belt tensioner system:
WARNING
Airbag and belt tensioner system can fail.
Carrying out repair work incorrectly on wiring harnesses for airbags and belt tensioners can cause a malfunction in passenger protection systems.
For repairs to airbag and belt tensioner wiring harnesses, only use contacts, connectors and wiring designed specifically for this purpose
Electronic parts catalogue.
Note
Wiring for airbag and belt tensioner wiring harness may only be repaired using wiring harness repair set
VAS 1978 B and previous versions.
Observe general information on repairs to the vehicle electrical system (see the separate procedure).
Do not repair wiring for the airbag and belt tensioner system at more than two repair locations. Repair locations increase the resistance in wiring and can be the cause of faults in the system's self-diagnosis.
To avoid corrosion, the crimp connectors must always be shrink-fitted when repairing the airbag wiring harness or belt tensioner wiring harness.
Do not incorporate the repaired wiring back in the wiring harness in the vehicle, and mark the repair location clearly with yellow insulating tape.
Repairs in the area around airbags or belt tensioners should not be performed more than 30 cm from the nearest connector housing. Following this method and marking the repair with yellow insulating tape ensures that previous repairs can be easily identified.
The original wires going to the airbag igniters have a twist length specification of 20 ± 5 mm. The wiring pairs have standard part numbers that ensure this twist length in series production, and it must always be observed when repairing twisted wires.
When performing repairs both wires to the airbag igniters must be of the same length. When twisting wires (1) and (2)
, it is very important to ensure that twist length A = 20 ±5 mm.
There must be no untwisted section of wire which is longer than B = 100 mm, e.g. in the vicinity of crimp connectors (arrow).
Repair operations must be recorded in the Audi Service Schedule under
“Workshop entries” with a brief outline of the repair work completed, company stamp and signature.
Any warranty claims made under the AUDI AG factory warranty are invalid if airbag wiring harness repairs have not been performed using genuine replacement parts and wiring harness repair set
VAS 1978 B.