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.
2005 Ford Freestar BaseFACTORY OEM SERVICE PROCEDURE
Module Communications Network System
- Description And Operation
- Communications Network
- Smart Junction Box (SJB)
- Driver Seat Module (DSM)
- Powertrain Control Module (PCM)
- Instrument Cluster
- Restraint Control Module (RCM)
- Anti-Lock Brake System (ABS) Module
- Dual Automatic Temperature Control (DATC) Module
- Speed Control Actuator
- Parking Aid Modules - 4 Sensor and 8 Sensor
- Driver or Passenger Climate Controlled Seat Module
- Right Hand (RH) and Left Hand (LH) Power Sliding Door (PSD) Modules
- Power Liftgate Module
- Communications Network
- Diagnosis And Testing
- Communications Network
- Notes
- Special Tool(s)
- Principles of Operation
- Inspection and Verification
- System Precheck
- Symptom Chart
- Connector Circuit Reference
- Pinpoint Test A: The Smart Junction Box (SJB) Does Not Respond To The Diagnostic Tool
- Pinpoint Test B: The Driver Seat Module (DSM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test C: The Powertrain Control Module (PCM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test D: The Instrument Cluster Does Not Respond To The Diagnostic Tool
- Pinpoint Test E: The Restraint Control Module (RCM) Does Not Respond To The Diagnostic Tool
- Pinpoint Test F: The Anti-Lock Brake System (ABS) Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test G: The Dual Automatic Temperature Control (DATC) Module 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 Parking Aid Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test J: The Driver/Passenger Climate Controlled Seat Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test K: The Left Hand (LH) or Right Hand (RH) Power Sliding Door (PSD) Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test L: The Power Liftgate Module Does Not Respond To The Diagnostic Tool
- Pinpoint Test M: No Universal Asynchronous Receiver-Transmitter (UART)-Based Protocol (UBP) Network Communication
- Pinpoint Test N: No International Standards Organization (ISO) 9141 Communication Network Communication
- Pinpoint Test O: No Standard Corporate Protocol (SCP) Network Communication
- Pinpoint Test P: No Module/Network Communication - No Power To The Diagnostic 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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