Circuit/System Description

Control modules connected to the CAN bus serial data circuits are high speed serial data modules that monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the control modules. The control modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. Each message contains the identification number of the transmitter module.

The electronic brake control module activates the multi-axis acceleration sensor and the steering angle sensor, which are connected to the CAN serial data circuits, by applying voltage when the ignition key is in ACC, ON or START.