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Pinpoint Tests: Notes

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Both Reversing Lamps Are Inoperative 

Refer to Reversing Lamps for schematic and connector information.

Normal Operation and Fault Conditions 

REFER to: Exterior Lighting - Overview .

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. For additional information on BCM Field Effect Transistor (FET) protection, REFER to: Body Control Module (BCM) - System Operation and Component Description .
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. For additional information on BCM Field Effect Transistor (FET) protection, REFER to: Body Control Module (BCM) - System Operation and Component Description .

Possible Sources 

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