Pinpoint Test A : One Or Both Reversing Lamps Are Inoperative: Notes
WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Reversing Lamps for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Exterior Lighting - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1277:11 | Reverse Lamp: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the reversing lamps output circuit. |
| B1277:15 | Reverse Lamp: Circuit Short To Battery or Open | A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the reversing lamps output circuit. |
Possible Sources
- Bulb
- Wiring, terminals or connectors
- Gear range concern
- Rear lamp assembly
- BCM
Visual Inspection and Diagnostic Pre-checks
- Inspect the bulbs and make sure they are OK.