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 ZX2 AutomaticFACTORY OEM SERVICE PROCEDURE
Section 571 (Module Communications Network)
WARNING: This page is about a different car, the 2004 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Diagnosis And Testing
- Communications Network
- Notes
- Special Tool(s)
- Principles Of Operation
- Inspection And Verification
- System Precheck
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: The Abs Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test B: The Pcm Does Not Respond To The Diagnostic Tool
- Pinpoint Test C: The Instrument Cluster Does Not Respond To The Diagnostic Tool
- Pinpoint Test D: The Gem Does Not Respond To The Diagnostic Tool
- Pinpoint Test E: The RCM Does Not Respond To The Diagnostic Tool
- Pinpoint Test F: No Pcm Standard Corporate Protocol (SCP) Network Communication - 2.0L SVT
- Pinpoint Test G: No International Standards Organization (ISO) 9141 Network Communication
- Pinpoint Test H: No Standard Corporate Protocol (SCP) Network Communication
- Pinpoint Test I: No Can Network Communication - 2.3L Only
- Pinpoint Test J: No Module/Network Communication
- Communications Network
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.
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