KA Cables, General

2001 Volvo S40 L4-1.9L Turbo VIN 29 B4204T3SECTION KA Cables, General





KA. Cables, general

General
This Manual is for the repair and replacement of cables in an existing cable harness.
Choice of cable size and rating, cable routing for installing accessories or other installations are not covered here.
- For mounting accessories or subsequent wiring work refer to the instructions for the particular part involved.

Normal multiple strand cable




There are different types of cable. The most common is multiple strand (more than 7 strands) of copper. There are also single strand cables and minimal strand (2-7 strands).
Cables have different areas and color codes.

Cable area
Specifications that give a cable area are always based on the area of the core (the copper strands). The cable area does not include the insulation.

Cable insulation (sheath)
Nearly all cables are of the insulated type and have either single or double insulation.
Some copper cables have no insulation.

Other types of cable





Shielded cables
Shielded cables are used for carrying signals from antenna and in wiring for engine control modules. Braided wire shield is wrapped around on or two conducting copper strands which provides protection against interference from electromagnetic high frequency fields.
Special tools are required for stripping, splicing and connecting shielded cables. These are not included in this Service Manual.





Twisted pair
Twisted pair cables reduce the effects of magnetically induced interference. When splicing twisted pair cables the splice points must not be made parallel.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.