Symptom Chart
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| Symptom | Possible Sources | Action |
|---|---|---|
| No GFM2 controlled systems are operational | Refer to pinpoint test. | GO to Pinpoint Test A |
| Some GFM2 controlled systems are operational | Upfitter fuses Upfitter relays Upfitter wiring Upfitter devices GFM2 |
REFER to upfitter wiring and check upfitter relays, wiring and devices. If no concerns are found with upfitter relays, wiring or devices, INSTALL a new GFM2. REFER to: Generic Function Module 2 (GFM2) . |