Symptom Chart: Communication Network
WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to Diagnostic Methods for information regarding Ford-specific diagnostic practices.
Symptom Chart: Communication Network
| Condition | Possible Sources | Actions |
|---|---|---|
| The vehicle does not start with the diagnostic scan tool connected to the Data Link Connector(DLC) and/or multiple malfunction indicators are only on when the diagnostic scan tool is connected to the DLC | Refer to the Pinpoint Test | GO to Pinpoint Test AI . |
| The Powertrain Control Module(PCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test A . |
| The Anti-Lock Brake System(ABS) module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test B . |
| The Restraints Control Module(RCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test C . |
| The Steering Column Control Module(SCCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test D . |
| The Instrument Panel Cluster(IPC) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test E . |
| The Body Control Module(BCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test F . |
| The Heating Ventilation Air Conditioning(HVAC) module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test G . |
| The Rear Heating Ventilation Air Conditioning(RHVAC) module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test H . |
| The Front Control/Display Interface Module(FCDIM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test I . |
| The Front Controls Interface Module(FCIM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test J . |
| The Audio Front Control Module(ACM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test K . |
| The Audio RCU does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test L . |
| The audio Digital Signal Processing(DSP) module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test M . |
| The Headlamp Control Module(HCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test N . |
| The LTM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test O . |
| The Driver Seat Module(DSM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test P . |
| The Front Seat Climate Control Module (SCME) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test Q . |
| The Global Positioning System Module(GPSM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test R . |
| The Accessory Protocol Interface Module(APIM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test S . |
| The Parking Aid Module(PAM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test T . |
| The Side Obstacle Detection Control Module - Left(SOD-L) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test U . |
| The Side Obstacle Detection Control Module - Right(SOD-R) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test V . |
| The Radio Transceiver Module (RTM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test W . |
| The Remote Function Actuator(RFA) module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test X . |
| The Power Steering Control Module(PSCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test Y . |
| The Transfer Case Control Module(TCCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test Z . |
| The Trailer Brake Control(TBC) module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test AA . |
| The Power Running Board(PRB) module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test AB . |
| The Trailer Module (TRM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test AC . |
| The Vehicle Dynamics Module(VDM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test AD . |
| The Rear Fog Lamp Control Module (RFLM) does not respond to the diagnostic scan tool (China only) | Refer to the Pinpoint Test | GO to Pinpoint Test AE . |
| No HS-CAN communication, all modules are not responding | Refer to the Pinpoint Test | GO to Pinpoint Test AF . |
| No MS-CAN communication, all modules are not responding | Refer to the Pinpoint Test | GO to Pinpoint Test AG . |
| No I-CAN communication, all modules are not responding | Refer to the Pinpoint Test | If the IPC does not pass a network test, DIAGNOSE IPC first. GO to Pinpoint Test E . GO to Pinpoint Test AH . |
| No power to the DLC | Refer to the Pinpoint Test | GO to Pinpoint Test AI . |