Symptom Chart
WARNING: This page is about a different car, the 2015 Ford F-150. 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 .
Symptom Chart
| 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 | GO to PINPOINT TEST A : ALL THE TRAILER LAMPS ARE INOPERATIVE |
| One or more trailer stop/turn lamps are inoperative or always on - vehicles not equipped with a TRM | Refer to the Pinpoint Test | GO to PINPOINT TEST B : ONE OR MORE TRAILER STOP/TURN LAMPS ARE INOPERATIVE OR ALWAYS ON - VEHICLES NOT EQUIPPED WITH A TRM (TRAILER MODULE) |
| One or more trailer stop/turn lamps are inoperative or always on - vehicles equipped with a TRM | Refer to the Pinpoint Test | GO to PINPOINT TEST C : ONE OR MORE TRAILER STOP/TURN LAMPS ARE INOPERATIVE OR ALWAYS ON - VEHICLES EQUIPPED WITH A TRM (TRAILER MODULE) |
| The trailer parking lamps are inoperative or always on | Refer to the Pinpoint Test | GO to PINPOINT TEST D : THE TRAILER PARKING LAMPS ARE INOPERATIVE OR ALWAYS ON |
| The trailer reversing lamps are inoperative or always on | Refer to the Pinpoint Test | GO to PINPOINT TEST E : THE TRAILER REVERSING LAMPS ARE INOPERATIVE OR ALWAYS ON |
| The trailer battery charging is inoperative/does not operate correctly | Refer to the Pinpoint Test | GO to PINPOINT TEST F : THE TRAILER BATTERY CHARGING IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |