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 MANUALSFORD2021EXPEDITION PLATINUM, RWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESMODULE COMMUNICATIONS NETWORK (2 OF 2)_
2021 Ford Expedition Platinum, RWD
Module Communications Network (2 Of 2)_
2021 Ford Expedition Platinum, RWDSECTION Module Communications Network (2 Of 2)_
- Diagnosis And Testing
- Communications Network
- DTC Chart(s)
- Symptom Chart(s)
- Pinpoint Tests
- Pinpoint Test A: The Powertrain Control Module (Pcm) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test B: The Gearshift Module (GSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test C: The Anti-Lock Brake System (Abs) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test D: The Vehicle Dynamics Control Module (VDM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test E: The Power Steering Control Module (PSCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test F: The TCCM (Transfer Case Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test G: The ATCM (All Terrain Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test H: The DCMR (Differential Control Module Rear) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test I: The Restraints Control Module (RCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test J: The Occupant Classification System Module (OCSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test K: The SCCM (Steering Column Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test L: The Instrument Panel Cluster (IPC) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test M: The Body Control Module (BCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test N: The FCIM (Front Controls Interface Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test O: The Rear Heating, Ventilation And Air Conditioning (RHVAC) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test P: The Audio Front Control Module (ACM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Q: The Image Processing Module A (IPMA) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test R: The Image Processing Module B (IPMB) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test S: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test T: The Audio DSP (Audio Digital Signal Processing Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test U: The TCU (TELEMATIC Control Unit Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test V: The Rear Audio Control Module (RACM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test W: The WACM (Wireless Accessory Charging Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test X: The RTM (Radio Transceiver Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Y: The Driver Seat Module (DSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Z: The Driver Door Module (DDM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Aa: The Passenger Door Module (PDM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ab: The Side Obstacle Detection Control Module LH (Sod-L) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ac: The Side Obstacle Detection Control Module RH (Sod-R) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ad: The PAM (Parking Assist Control Module) Does Not Respond To The Diagnostic Scan Tool (Active Park Assist Only)
- Pinpoint Test AE: The DCDC (Direct Current/Direct Current Converter Control Module) (Voltage Quality Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AF: The HSWM (Heated Steering Wheel Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ag: The Rear Gate Trunk Module (RGTM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ah: The SCMG (Driver Multi-Contour Seat Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ai: The SCMH (Passenger Multi-Contour Seat Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AJ: The SCMJ (Power Fold Seat Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AK: The TRM (Trailer Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Al: The TBM (Trailer Brake Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Am: The RBM (Running Board Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test An: All Modules Do Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AO: No High Speed Controller Area Network 1 (HS-Can1) Communication, All Modules Are Not Responding
- Pinpoint Test AP: No High Speed Controller Area Network 2 (HS-Can2) Communication, All Modules Are Not Responding
- Pinpoint Test AQ: No High Speed Controller Area Network 3 (HS-Can3) Communication, All Modules Are Not Responding
- Pinpoint Test Ar: No High Speed Controller Area Network 4 (HS-Can4) Communication, All Modules Are Not Responding
- Pinpoint Test As: No Medium Speed Controller Area Network (Ms-Can) Communication, All Modules Are Not Responding
- Pinpoint Test At: No Power To The Data Link Connector (DLC)
- Pinpoint Test AU: U3000:44, U3000:45, Or U3000:49
- Pinpoint Test Av: U2100:00
- Communications Network
- Removal And Installation
RENDER: 1.0x
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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.