A typical Body Control Module ECU consists of a microprocessor to control the various functions of vehicle’s body electronics (power window, wiper, side-view mirrors and more).An alternator test with a meter to the battery shows that the alterntor is working.sadly now everyone is going DIGITAL and our ANALOG trolling motors they have no parts.
How to test a body control module The BCM in the Holden Cruze communicates with other onboard control modules via the vehicles CAN Bus network.