Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Ford Excursion 2WD V8-6.0L DSL TurboFACTORY OEM SERVICE PROCEDURE
Information Bus: Service and Repair
COMMUNICATION CIRCUIT WIRING REPAIR
SPECIAL TOOL(S)
1. Disconnect the battery ground cable.
2. Strip the wires.
3. NOTE: Use rosin core mildly activated (RMA) solder, not acid core solder.
Solder the wires.
1 Install the heat shrink tube.
2 Twist the wires together.
3 Solder the wires together.
4. NOTE: Wait for the solder to cool before moving the wires.
Bend the wires back in a straight line.
5. Position the (A) heat shrink tube over the (B) wire repair.
- Overlap the heat shrink tube on both wires.
6. Use the heat gun to heat the repaired area until adhesive flows out both ends of the heat shrink tube.
7. Reconnect the battery ground cable.
Heat Gun:
SPECIAL TOOL(S)
1. Disconnect the battery ground cable.
2. Strip the wires.
3. NOTE: Use rosin core mildly activated (RMA) solder, not acid core solder.
Solder the wires.
1 Install the heat shrink tube.
2 Twist the wires together.
3 Solder the wires together.
4. NOTE: Wait for the solder to cool before moving the wires.
Bend the wires back in a straight line.
5. Position the (A) heat shrink tube over the (B) wire repair.
- Overlap the heat shrink tube on both wires.
6. Use the heat gun to heat the repaired area until adhesive flows out both ends of the heat shrink tube.
7. Reconnect the battery ground cable.
Factory Service Tools
Use the Manual With the Right Hardware
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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.