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.
2015 Ford Flex SEFACTORY OEM SERVICE PROCEDURE
Section 1660 (Module Communications Network)
WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Diagnosis And Testing
- Communications Network
- Special Tool(s)
- Principles of Operation
- Notes
- High Speed Controller Area Network (HS-CAN) Operation
- Medium Speed Controller Area Network (MS-CAN) Operation
- Controller Area Network (CAN) Fault Tolerance
- Normal CAN Operation
- CAN Circuits Shorted Together
- CAN (+) Circuit Shorted To Ground
- CAN (-) Circuit Shorted To Ground
- CAN (+) Circuit Shorted To Battery Voltage
- CAN (-) Circuit Shorted To Battery Voltage
- CAN Circuit Signal Corruption
- Controller Area Network (CAN) Multiplex Messages
- 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 Restraints Control Module (RCM) Does Not Respond To The Scan Tool
- Pinpoint Test D: The 4X4 Control Module Does Not Respond To The Scan Tool
- Pinpoint Test E: The Occupant Classification System Module (OCSM) Does Not Respond To The Scan Tool
- Pinpoint Test F: The Headlamp Control Module (HCM) Does Not Respond To The Scan Tool
- Pinpoint Test G: The Steering Angle Sensor Module (SASM) Does Not Respond To The Scan Tool
- Pinpoint Test H: The Instrument Cluster (IC) Does Not Respond To The Scan Tool
- Pinpoint Test I: The Smart Junction Box (SJB) Does Not Respond To The Scan Tool
- Pinpoint Test J: The HVAC Module Does Not Respond To The Scan Tool
- Pinpoint Test K: The Audio Control Module (ACM) Does Not Respond To The Scan Tool
- Pinpoint Test L: The Audio Digital Signal Processing (DSP) Module Does Not Respond To The Scan Tool
- Pinpoint Test M: The Satellite Digital Audio Receiver System (SDARS) Module Does Not Respond To The Scan Tool
- Pinpoint Test N: The Liftgate/Trunk Module (LTM) Does Not Respond To The Scan Tool
- Pinpoint Test O: The Driver Seat Module (DSM) Does Not Respond To The Scan Tool
- Pinpoint Test P: The Global Positioning System Module (GPSM) Does Not Respond To The Scan Tool
- Pinpoint Test Q: The Dual Climate Controlled Seat Module (DCSM) Does Not Respond To The Scan Tool
- Pinpoint Test R: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool
- Pinpoint Test S: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Scan Tool
- Pinpoint Test T: Intermittent No Medium Speed Controller Area Network (MS-CAN) Communication, One Or More Modules Are Not Responding During Network Test
- Pinpoint Test U: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding
- Pinpoint Test V: Intermittent No High Speed Controller Area Network (HS-CAN) Communication, One Or More Modules Are Not Responding During Network Test
- Pinpoint Test W: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
- Pinpoint Test X: 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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