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Network Message Chart

Module Network Input Messages -- Body Control Module (BCM) 

Broadcast Message Originating Module Message Purpose
Alternator fault PCM The PCM has detected a fault in the generator or generator circuits.

Module Network Input Messages -- Instrument Panel Cluster (IPC) 

Broadcast Message Originating Module Message Purpose
Power system status BCM Reports any generator/charging system faults. Used for charging system fault indicator.
Load Shed Request BCM Used to indicate what level of load shed is commanded.

Module Network Input Messages -- Powertrain Control Module (PCM) 

Broadcast Message Originating Module Message Purpose
Load Shed Request BCM Used to indicate what level of load shed is commanded.