B1480

DTC B1480

DTC DESCRIPTOR

DTC B1480 00
Battery Rundown Protection Circuit No Additional Information

DIAGNOSTIC FAULT INFORMATION

IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection

CIRCUIT/SYSTEM DESCRIPTION
The body control module (BCM) supplies battery voltage to the courtesy lamps. In the event that any of these lamps were to remain illuminated for more than 20 minutes with the ignition switch in the OFF position, the BCM will deactivate the inadvertent power courtesy lamps supply voltage circuit to prevent total battery discharge.

CONDITIONS FOR RUNNING THE DTC
Battery voltage must be between 9-16 volts.

CONDITIONS FOR SETTING THE DTC
The inadvertent power courtesy lamps voltage supply circuit to the courtesy lamps is shorted to ground for 1 second or greater.

ACTION TAKEN WHEN THE DTC SETS
The courtesy lamps will not operate.

CONDITIONS FOR CLEARING THE DTC
- The condition responsible for setting the DTC no longer exists.
- You issue a scan tool CLEAR DTCs command.
- A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.

CIRCUIT/SYSTEM TESTING
1. Ignition ON, install a scan tool, clear all DTCs and operate the vehicle within the Conditions for Running the DTC.
- If DTC B1480 resets as current, repair the inadvertent power courtesy lamps voltage supply circuit for a short to ground.
2. If all circuits test normal, replace the BCM.

REPAIR INSTRUCTIONS

IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Control Module References for BCM replacement, setup, and programming