K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Body Control Module: Description and Operation
Wake-Up State
The BCM performs the BCM functions in the wake-up state. The BCM enters the sleep state when the active control or monitoring of system
malfunctions has stopped, or when the BCM is idling. The BCM must detect certain wake-up inputs before entering the wake-up state. The BCM
monitors the BCM inputs during the sleep state, allowing the BCM to switch between the 2 states. The BCM wake-ups are as follows:
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Door ajar switches
^
Door handle switches
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Dome lamp
^
Park lamps
^
Power door lock switches
^
Interior lamp request active
^
Ignition key put into the ignition switch
^
Ignition key removed from the ignition switch
^
Ignition in the RUN position
^
Key in door lock switch
^
RFA request to the BCM
^
Any Class 2 communication requiring BCM interaction
