Pyrotechnic Component Wire, Repairing

Pyrotechnic Component Wire, Repairing

Special tools, testers and auxiliary items required

• Wiring Harness Repair Set VAS 1978/A (VAS 1978 B)

• Repairs to the wiring harnesses and connectors must only be performed using the Wiring harness repair set (VAS 1978 B).

• Observe the country-specific requirements.

• Use of the Wiring harness repair set (VAS 1978 B) is described in detail in the attached operating instructions.

• Repairs on open circuits and faulty connectors are also explained using examples.

• Observe general notes for repairs on the vehicle electrical system. Refer to=> [ General Notes on Repairs on Vehicle Electrical System ] General Notes on Repairs on Vehicle Electrical System.

• Observe the notes on wiring harness and connector repairs. Refer to=> [ General Notes For Repairing Wiring Harnesses and Connectors ] General Notes For Repairing Wiring Harnesses and Connectors including identifying repair locations.

Passenger protection malfunction due to faulty repairs to the wires for pyrotechnic components - for example, airbag, belt tensioner.

• Repairs to wires for pyrotechnic components may only be performed on the vehicle side using the Wiring harness repair set (VAS 1978 B) and original replacement parts (connector housing, contacts, wires) in order to guarantee the repair quality required by Audi AG.

• Wires at individual airbag units may not be repaired.

• If the wires or connectors on the airbag units are damaged, the respective airbag unit must be replaced for safety reasons.

• A maximum of two repairs may be performed when repairing wires for pyrotechnic components. Repairs increase the electrical resistance in the wire and may trigger malfunctions in the system On Board Diagnostic (OBD).

• Repairs in the area of the pyrotechnic components should be performed a maximum of 30 cm from the next connector housing. Together with the identification using yellow adhesive tape, this procedure makes it possible to obtain a quick overview of previously performed repairs.

• Both wires to the airbag igniter have a twist with 20 +/- 5 mm routing length. This routing length must be maintained when repairing the twisted wires.






• When repairing, both wires to the airbag igniters must be the same length. When twisting the wires - 1 and 2 - together, the - A - = 20 mm routing length must be maintained.

• While doing so, no section of wire may be greater than - B - = 100 mm without twisting the wires, for example, in the area of crimp connectors - arrow -.

• Repairs are to be documented in the Audi Service Plan under "Space for workshop entries" with a short commentary of scope of repairs, workshop stamp and signature.

• Any warranty claims to Audi AG are void for repairs on airbag wiring harness which were not performed using original replacement parts and (VAS 1978 B).