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.
2008 Ford Mustang GT, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Module Communications Network System
- Description And Operation
- Diagnostic Tests
- Communications Network
- Notes
- Principles of Operation
- Inspection and Verification
- DTC Charts
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: The PCM Does Not Respond To The Scan Tool
- Pinpoint Test B: The ABS Module Does Not Respond To The Scan Tool
- Pinpoint Test C: The Instrument Cluster (IC) Does Not Respond To The Scan Tool
- Pinpoint Test D: The Smart Junction Box (SJB) Does Not Respond To The Scan Tool
- Pinpoint Test E: The Audio Control Module (ACM) Does Not Respond To The Scan Tool
- Pinpoint Test F: The Satellite Digital Audio Receiver System (SDARS) Module Does Not Respond To The Scan Tool
- Pinpoint Test G: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool Or No ISO 9141 Network Communication
- Pinpoint Test H: Intermittent No Medium Speed Controller Area Network (MS-CAN) Communication, Communication Can Be Intermittently Established
- Pinpoint Test I: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding
- Pinpoint Test J: Intermittent No High Speed Controller Area Network (HS-CAN) Communication, Communication Can Be Intermittently Established
- Pinpoint Test K: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
- Pinpoint Test L: No Power To The Scan Tool
- Communications Network
Factory Service Tools
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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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