PINPOINT TEST AA : All the Reversing Lamps Are Inoperative: Notes

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostic Overview

All the Reversing Lamps Are Inoperative

Refer to Reversing Lamps for schematic and connector information.

Normal Operation and Fault Conditions

Refer to Exterior Lighting .

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 Actived-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 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.

Visual Inspection and Diagnostic Pre-checks

For expedition, inspect the bulbs and make sure they are OK.
Inspect the rear lamp assembly for damage.