Module Communications Network: Wiring Ford Focus I

REPAIRING BUS WIRING

Note. The following procedure must be used to ensure proper repair is performed on bus wiring. Bus wiring is sensitive to moisture and oxidation and must be properly sealed to ensure proper operation of module communications network. Regular heat shrink tubing is NOT sufficient, heat shrink tubing containing hot melt wax is required.

1. When performing repairs on bus wiring, ensure wires on bus are twisted at a rate of 33-40 winds per 3.3 ft. (1 m). The twists should start approximately 4.9" (124 mm) from any connector. Use only 20 AWG standard wire gauge for repairs.
2. If performing a splice, strip.75" (19.0 mm) of insulation from one wire and 1.50" (38.1 mm) of insulation from the other wire. Perform STEP 1 in illustration. (Scheme 11) Place hot melt wax type heat shrink tubing over one wire.
3. Twist stripped portion of wires together. Solder connection using resin core RMA solder. DO NOT use acid core solder. Bend wires to allow installation of heat shrink tubing. Perform STEP 2 in illustration. (Scheme 11)
4. Position heat shrink tubing over splice area. Using heat gun, evenly heat the heat shrink tubing until wax flows from both ends of heat shrink tubing.

Scheme 11

WIRING DIAGRAMS

Note. See appropriate wiring diagrams in DATA LINK CONNECTORS, GROUND DISTRIBUTION and/or POWER DISTRIBUTION article in WIRING DIAGRAMS.