Circuit Description

The electronic brake control module (EBCM) is required to operate within a specified range of voltage to function properly. During ABS and traction control system (TCS) operation, there are current requirements that will cause the voltage to drop. Because of this, voltage is monitored out of ABS/TCS control to indicate a good charging system condition, and also during ABS/TCS control when voltage may drop significantly. The engine control module (ECM) also monitors for high voltage conditions which could damage the EBCM.