2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 771
DTC Descriptors
DTC B3821 00
- Left Rear Window Relay Power Circuit
DTC B3824 00
- Right Rear Window Relay Power Circuit
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) monitors the window lockout command from the driver door switch (DDS). When the rear window switch
operation is authorized, the the BCM signal voltage drops approximately 5 volts to the rear window switches allowing for normal window
operation from the rear switches. If the rear window lockout function is commanded, the BCM signal voltage is at B+ voltage which disables the
rear window switches and the rear windows will only operate when the BCM receives a command from the driver master control.
Conditions for Running the DTC
* Battery voltage is between 9-16 volts.
* The ignition is ON.
Conditions for Setting the DTC
B3821 00
The BCM detects a fault in the left rear window lockout circuit.
B3824 00
The BCM detects a fault in the right rear window lockout circuit.
Action Taken When the DTC Sets
The left or right rear power window will be inoperative.
Conditions for Clearing the DTC
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