Symptom Chart(s)
WARNING: This page is about a different car, the 2015 Ford C-Max. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart: Communication Network
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
Symptom Chart
| Condition | Possible Sources | Actions |
|---|---|---|
| The vehicle does not start with the diagnostic scan tool connected to the 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 AH |
| No High Speed Controller Area Network (HS-CAN) communication, all modules are not responding | Refer to the Pinpoint Test | GO to Pinpoint Test AD |
| No HEV High Speed Controller Area Network (HS-CAN) communication, all modules are not responding | Refer to the Pinpoint Test | GO to Pinpoint Test AE |
| No Medium Speed Controller Area Network (MS-CAN) communication, all modules are not responding | Refer to the Pinpoint Test | GO to Pinpoint Test AF |
| No Infotainment Controller Area Network (I-CAN) communication, all modules are not responding | Refer to the Pinpoint Test | If the IPC does not pass a network test, DIAGNOSE the IPC first. GO to Pinpoint Test F If the IPC does pass a network test, GO to Pinpoint Test AG |
| The PCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test A |
| The ABS module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test B |
| The RCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test C |
| The OCSM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test D |
| The SASM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test E |
| The IPC does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test F |
| The BCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test G |
| The HVAC module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test H |
| The ACM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test I |
| The DDM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test J |
| The PDM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test K |
| The IPMB does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test L |
| The GPSM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test M |
| The PAM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test N |
| The APIM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test O |
| The FCIM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test P |
| The FCDIM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test Q |
| The DACMC does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test R |
| The RFA module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test S |
| The PSCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test T |
| The SOBDMC (TCM) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test U |
| The RGTM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test V |
| The TCU does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test W |
| The BECM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test X |
| The SOBDM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test Y |
| The ACCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test Z |
| The Direct Current/Direct Current (DC/DC) Converter Control Module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test AA |
| The GFM (charge port light ring) does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test AB |
| The GWM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test AC |
| No power to the DLC | Refer to the Pinpoint Test | GO to Pinpoint Test AH |