Symptom Chart
WARNING: This page is about a different car, the 2018 Lincoln Navigator. 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 .
| Condition | Possible Sources | Actions |
|---|---|---|
| A module does not respond to the diagnostic scan tool | Fuse Wiring, terminals or connectors Module |
REFER to: Communications Network . |
| All the trailer lamps are inoperative | Refer to the Pinpoint Test | PINPOINT TEST A |
| One or more trailer stop/turn lamps are inoperative | Refer to the Pinpoint Test | PINPOINT TEST B |
| One or more trailer stop/turn lamps are always on | Refer to the Pinpoint Test | PINPOINT TEST C |
| The trailer parking lamps are inoperative or always on | Refer to the Pinpoint Test | PINPOINT TEST D |
| The trailer reversing lamps are inoperative or always on | Refer to the Pinpoint Test | PINPOINT TEST E |
| The trailer battery charging is inoperative/does not operate correctly | Refer to the Pinpoint Test | PINPOINT TEST F |