Non-SRS Wiring Repairs: Volvo

What is a non-SRS wiring repair? It is the repairing of an electrical component that is not part of the supplemental restraints system circuit (usually identified by yellow wire looms). As technology increases on vehicles, so does the number of components that utilize electricity. Many of the sensors and modules are becoming smarter and more sensitive. If the wire is too long, the wrong gauge, or spliced in the wrong location, it can cause malfunctions in the components that it’s powering. Many OEMs have different restrictions and guidelines for repairing wiring that does not control SRS components. On the other hand, there are OEMs that don’t allow wiring repairs at all, so full harness replacement is the only option.

Volvo provides wiring repair information under: Information ➤ Repair ➤ Cleaning, Inspection And Adjustment ➤ 3 Electrical Systems ➤ 37 Cables And Fuses ➤ 371 Cables. This area has the following documents in their service information for repairing non-SRS wiring harnesses:

• Joining Cables - provides an installation procedure for junction sleeves.
• Fibre Optic Cable Repair - Volvo states: "A fibre optic cable must not be spliced. A damaged fibre optic cable an only be repaired if there is sufficient length for a new end sleeve to be installed. If not, a new fibre optic cable must be routed parallel to the damaged cable as a replacement."
• The Cable Terminals Surface Treatment document is found under: Information ➤ Repair ➤ General Information ➤ 3 Electrical Systems ➤ 37 Cables And Fuses ➤ 371 Cables and provides the following caution: "If new components are supplied with a section of new wiring, the equivalent wiring section in the vehicle must be substituted with the new section. Due to oxidation and galvanic currents, female and male connections with the same surface treatment should be used."

It is important to read the service and repair manuals to make sure what repairs can be carried out and where, to achieve a complete, safe, and quality repair.

For all Volvo service information, go to: www.volvotechinfo.com

Additional I-CAR Collision Repair News you may find helpful:

• Back-To-Basics: Broken Wires
• Non-SRS Wiring Repairs
• Step-By-Step: Accessing Volvo Repair Information

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