BCM Functions
The body control module (BCM) performs multiple body control functions. The
BCM can control devices directly connected to its outputs based on input information.
The BCM evaluates this information and controls certain body control systems by commanding
outputs on or off. The BCM control inputs can be:
| • | Sensors and switches that are directly connected to the BCM |
| • | Class 2 serial data received from other control modules connected to the
class 2 serial data link. |
The BCM is also capable of controlling other vehicle systems that are not directly
wired to the BCM. The BCM does this by sending specific messages on the class 2 serial
data link. The control module capable of performing the required function will respond
to the BCM message.
The BCM controls these functions:
Power Mode
The BCM is the power mode master (PMM). Refer to
Power Mode Description and Operation
for more information.
