Procedures

Wiring Harnesses and Connectors, Repairing

Special tools, testers and auxiliary items required

• Wiring Harness Repair Set (VAS 1978 B)

CAUTION!
• 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 (VAS 1978 B) is described in detail in the attached operating instructions.

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

CAN Bus Wire, Repairing

• 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.

An unshielded two strand wire - 1 and 2 - with a cross section of 0.35 mm2 or 0.5 mm2 can be used as CAN-Bus wiring.





• CAN bus wires have the following color coding:





• When repairing CAN bus wires, both wires must be 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 - = 50 mm without twisting the wires, for example, in the area of crimp connectors - arrow -.