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.
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HOMESERVICE MANUALSFORD2004MUSTANG BASE, 2D COUPE, 3.9 6, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 146 (MODULE COMMUNICATIONS NETWORK)SYSTEM TESTSTEST G: NO MODULE/NETWORK COMMUNICATION - SCP BUS
2004 Ford Mustang Base, 2D Coupe, 3.9 6, Automatic
Test G: No Module/Network Communication - SCP Bus
2004 Ford Mustang Base, 2D Coupe, 3.9 6, AutomaticSECTION Test G: No Module/Network Communication - SCP Bus
WARNING: This page is about a different car, the 2002 Ford RV Cutaway, 2002 Ford Econoline, 2002 Ford E450 Super Duty, and 2002 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Depending on module configuration, with all modules connected and with ignition switch in RUN position or with engine running, 2-3 volts may be present at DLC terminals No. 2 (Tan/Orange wire) and No. 10 (Pink/Light Blue wire). See Figure. These are the Standard Corporate Protocol (SCP) diagnostic communications network circuits.
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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.