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 MANUALSFORD2007CROWN VICTORIA LX, 4.6 WREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESMODULE COMMUNICATIONS NETWORK SYSTEM
2007 Ford Crown Victoria LX, 4.6 W
Module Communications Network System
2007 Ford Crown Victoria LX, 4.6 WSECTION Module Communications Network System
- Description And Operation
- Diagnostic Tests
- Communications Network
- Notes
- Principles of Operation
- Inspection and Verification
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: The Powertrain Control Module (PCM) Does Not Respond To The Scan Tool, or No High Speed Controller Area Network (HS-CAN) Communication
- Pinpoint Test B: The Anti-Lock Brake System (ABS) Module Does Not Respond To The Scan Tool
- Pinpoint Test C: The Instrument Cluster Does Not Respond To The Scan Tool
- Pinpoint Test D: The Lighting Control Module (LCM) Does Not Respond To The Scan Tool
- Pinpoint Test E: The Electronic Automatic Temperature Control (EATC) Module Does Not Respond To The Scan Tool
- Pinpoint Test F: The Air Suspension Module Does Not Respond To The Scan Tool
- Pinpoint Test G: The Driver Door Module (DDM) Does Not Respond To The Scan Tool
- Pinpoint Test H: The Overhead Console Does Not Respond To The Scan Tool
- Pinpoint Test I: The Variable Assist Power Steering (VAPS) Module Does Not Respond To The Scan Tool
- Pinpoint Test J: The Fire Suppression Module Does Not Respond To The Scan Tool
- Pinpoint Test K: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool
- Pinpoint Test L: No International Standards Organization (ISO) 9141 Network Communication, All Modules Are Not Responding
- Pinpoint Test M: No Standard Corporate Protocol (SCP) Network Communications, All Modules Are Not Responding
- Pinpoint Test N: No Power To The Scan Tool
- Communications Network
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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.