Friday, September 6, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 594


DTC Descriptor



DTC B2615 00



- Passenger Compartment Dimming 2 Circuit



Diagnostic Fault Information



Circuit/System Description



Voltage for the courtesy lamps is supplied from body control module (BCM), driver door switch, and passenger door switch. When a door is opened,



a signal is applied to the door module. The door module then applies a message on the low speed serial data communication circuit to the BCM to



activate the courtesy lamps. The BCM then applies voltage to the courtesy lamps voltage supply circuit and the components on that circuit.



Conditions for Running the DTC



* Battery Voltage must be between 9-16 V.



* The ignition is ON.



* The BCM, driver door switch, and passenger door switch attempt to illuminate the courtesy lamps.



Conditions for Setting the DTC



The BCM, driver door switch, or passenger door switch detect a short to ground, short to voltage, or open on the courtesy lamp voltage supply



circuit.



Action Taken When the DTC Sets