Friday, October 4, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 695


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



* The DTC will be current for as long as the fault is present.



* When the fault is no longer present, the DTC will be a history DTC.



* A history DTC will clear after 50 ignition cycles



Reference Information



Schematic Reference



Moveable Window Schematics (See: Windows and Glass/Windows/Diagrams/Electrical Diagrams)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)

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