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 MANUALSFORD2019TRANSIT-250 BASE, 2D CAB CHASSIS, 3.2L ENG VIN VREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 52 (MODULE COMMUNICATIONS NETWORK)
2019 Ford Transit-250 Base, 2D Cab Chassis, 3.2L Eng VIN V
Section 52 (Module Communications Network)
2019 Ford Transit-250 Base, 2D Cab Chassis, 3.2L Eng VIN VSECTION Section 52 (Module Communications Network)
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Communications Network - Overview
- Communications Network - System Operation and Component Description
- System Operation
- System Diagram
- Network Termination
- Gateway Module
- High Speed Controller Area Network 1 and 2 (HS-CAN1, HS-CAN2)
- High Speed Controller Area Network 3 (HS-CAN3)
- Medium Speed Controller Area Network (MS-CAN, MS-CAN2)
- Controller Area Network (CAN) Fault Tolerance
- Controller Area Network (CAN) Multiplex Messages
- System Operation
- Diagnosis And Testing
- Communications Network
- DTC Chart: Gateway Module (GWM)
- Symptom Chart: Communication Network
- Pinpoint Tests
- Pinpoint Test A : The Powertrain Control Module (Pcm) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test B : The TCM (Transmission Control Module) 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 Restraints Control Module (RCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test E : The BECMB (Extended Power Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test F : The SCCM (Steering Column Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test G : The SASM (Steering Angle Sensor Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test H : The Instrument Panel Cluster (IPC) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test I : The Body Control Module (BCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test J : The BCMB (Body Control Module B) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test K : The FCIM (Front Controls Interface Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test L : The Audio Front Control Module (ACM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test M : The Image Processing Module A (IPMA) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test N : The Image Processing Module B (IPMB) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test O : The Global Positioning System Module (GPSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test P : The FCDIM (Front Control/Display Interface Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Q : The Accessory Protocol Interface Module (APIM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test R : The DSP (Audio Digital Signal Processing Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test S : The RTM (Radio Transceiver Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test T : The Driver Seat Module (DSM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test U : The Driver Door Module (DDM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test V : The Passenger Door Module (PDM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test W : The Side Obstacle Detection Control Module LH (Sod-L) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test X : The Side Obstacle Detection Control Module RH (Sod-R) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Y : The Cruise Control Module (CCM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Z : The Head Up Display (HUD) Module Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Aa : The HSWM (Heated Steering Wheel Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ab : The SCME (Front Seat Climate Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ac : The SCMG (Driver Multi-Contour Seat Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ad : The SCMH (Passenger Multi-Contour Seat Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AE : The TRM (Trailer Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AF : The TBM (Trailer Brake Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ag : The RBM (Running Board Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ah : The TCCM (Transfer Case Control Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Ai : The GFM (Generic Function Module) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AJ : The GFM2 (Generic Function Module 2) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test AK : The Gateway Module (GWM) Does Not Respond To The Diagnostic Scan Tool
- Pinpoint Test Al : No High Speed Controller Area Network 1 (HS-Can1) Communication, All Modules Are Not Responding
- Pinpoint Test Am : No High Speed Controller Area Network 2 (HS-Can2) Communication, All Modules Are Not Responding
- Pinpoint Test An : No High Speed Controller Area Network 3 (HS-Can3) Communication, All Modules Are Not Responding
- Pinpoint Test AO : No Medium Speed Controller Area Network (Ms-Can) Communication, All Modules Are Not Responding
- Pinpoint Test AP : No Medium Speed Controller Area Network 2 (Ms-Can2) Communication, All Modules Are Not Responding
- Pinpoint Test AQ : No Power To The Data Link Connector (DLC)
- Communications Network
- General Procedures
- Removal And Installation
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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.