3.8L BCM Tests W/Codes: Operation: Notes

A combination of inputs from the major components, sensors and switches, communicate together with the BCM. Various inputs to the BCM combine with program instructions within system memory, providing accurate control over all subsystems involved. When a subsystem circuit exceeds preprogrammed limits, a system malfunction is indicated and certain back-up functions maybe provided. The BCM controls subsystems through direct outputs or through data transmitted along the serial data line to one of the other major components. The process of receiving', storing; testing and control- ling information is continuous. The data communication gives the BCM control over the ECM's self-diagnostic capabilities in addition to its own. Between the BCM and the other 4 major components of the computer system, a communication process has been incorpo- rated, that allows devices to share information and thereby provide for additional control capability.