Symptom Chart: Stoplamps
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. 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 stoplamps are inoperative | Refer to the Pinpoint Test | GO to Pinpoint Test A |
| The high mounted stoplamp is inoperative | Refer to the Pinpoint Test | GO to Pinpoint Test B |
| Both rear stoplamps are inoperative and the high mounted stoplamp operates correctly | Wiring, terminals or connectors | REPAIR the rear stoplamps ground circuit for an open. |
| Both upper and lower LH stoplamps are inoperative and the high mounted stoplamp operates correctly - incandescent rear lamps | Wiring, terminals or connectors | REPAIR the LH rear stoplamps ground circuit for an open. |
| Both upper and lower RH stoplamps are inoperative and the high mounted stoplamp operates correctly - incandescent rear lamps | Wiring, terminals or connectors | REPAIR the rear RH stoplamps ground circuit for an open. |
| An individual rear stoplamp is inoperative - vehicles without a pickup bed | Refer to the Pinpoint Test | GO to Pinpoint Test C |
| An individual rear upper stoplamp is inoperative - incandescent rear lamps | Refer to the Pinpoint Test | GO to Pinpoint Test D |
| An individual rear lower stoplamp is inoperative - incandescent rear lamps | Refer to the Pinpoint Test | GO to Pinpoint Test E |
| An individual rear stoplamp is inoperative - LED rear lamps | Refer to the Pinpoint Test | GO to Pinpoint Test F |
| One or more stoplamps are on continuously | Refer to the Pinpoint Test | GO to Pinpoint Test G |