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 Lincoln Aviator AWDFACTORY OEM SERVICE PROCEDURE
Section 495 (Module Communications Network System)
WARNING: This page is about a different car, the 2004 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Diagnosis And Testing
- Communications Network
- Notes
- Special Tool(s)
- Principles Of Operation
- 4-Wheel Anti-Lock Brake System/Traction Control (ABS/TC) Control Module Or Stability Assist Module (if equipped)
- Restraint Control Module (RCM)
- Message Center Module
- Parking Aid Module
- Powertrain Control Module (PCM)
- Audio Control Module (ACM)
- Audio Control Module (ACM) W/ Navigation Display & Built-In 6 CDDJ
- Lighting Control Module (LCM)
- Instrument Cluster
- Driver Seat Module (DSM)
- Speed Control Actuator
- Luggage Compartment Lid Module
- Driver Door Module (DDM)
- Rear Air Suspension Module
- Electronic Automatic Temperature Control (EATC) Module
- Navigation System Module
- Inspection And Verification
- System Precheck
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: The Anti-Lock Brake System (Abs) Control Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test B: The Audio Control Module (ACM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test C: The Driver Door Module (DDM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test D: The Driver Seat Module (DSM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test E: The Electronic Automatic Temperature Control (EATC) Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test F: The Restraint Control Module (RCM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test G: The Lighting Control Module (LCM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test H: The Speed Control Actuator Does Not Respond To The Diagnostic Tool
- Pinpoint Test I: The Navigation System Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test J: The Powertrain Control Module (Pcm) Does Not Respond To The Diagnostic Tool
- Pinpoint Test K: The Rear Air Suspension Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test L: The Instrument Cluster Does Not Respond To The Diagnostic Tool
- Pinpoint Test M: The Message Center Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test N: The Parking Aid Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test O: The Luggage Compartment Lid Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test P: No International Standards Organization (ISO) 9141 Network Communication
- Pinpoint Test Q: No Standard Corporate Protocol (SCP) Network Communication
- Pinpoint Test R: No Universal Asynchronous Receiver-Transmitter (UART) - Based Protocol (UBP) Network Communication
- Pinpoint Test S: No Module/Network Communication - No Power To The Diagnostic Tool
- Communications Network
- General Procedures
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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