Pinpoint Test A : One Or Both Reversing Lamps Are Inoperative: Notes
WARNING: This page is about a different car, the 2020 Ford F-150. 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. |
| U1000:00 | Solid State Driver Protection Active -Driver Disabled: No Sub Type Information | This DTC sets when the BCM has temporarily shut down the output driver. The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The BCM cannot enable the output until the cause of the short is corrected, the Diagnostic Trouble Codes (DTCs) have been cleared and a successful self-test is run. |
| U3000:49 | Control Module: Internal Electronic Failure | This DTC sets when the BCM has permanently shut down the output driver. The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the BCM can withstand. CORRECT the cause of the excessive current draw before installing a new BCM. |
Possible Sources
- Bulb (incandescent rear lamps only)
- Wiring, terminals or connectors
- Gear range concern
- Rear lamp assembly (LED rear lamps only)
- BCM
Visual Inspection and Diagnostic Pre-checks
- Inspect the bulbs and make sure they are OK.