Symptom Chart(s)
Symptom Chart: Communication Network
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Communications Network - System Operation and Component Description
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 Y |
| 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 FCDIM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test D |
| The OCSM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test E |
| The SASM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test F |
| The IPC does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test G |
| The BCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test H |
| The HVAC module does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test I |
| The ACM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test J |
| The DDM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test K |
| The PDM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test L |
| The IPMB 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 HCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test O |
| The GPSM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test P |
| The APIM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test Q |
| The FCIM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test R |
| The PSCM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test S |
| The TRM does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test T |
| The SODL or SODR does not respond to the diagnostic scan tool | Refer to the Pinpoint Test | GO to Pinpoint Test U |
| No HS-CAN communication, all modules are not responding | Refer to the Pinpoint Test | GO to Pinpoint Test V |
| No MS-CAN communication, all modules are not responding | Refer to the Pinpoint Test | GO to Pinpoint Test W |
| No 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 G If the IPC does pass a network test, GO to Pinpoint Test X |
| No power to the DLC | Refer to the Pinpoint Test | GO to Pinpoint Test Y |