Anti-Lock Braking Mode

ABS has been designed to improve controllability and steerability of a vehicle during braking that would cause one or more wheels to lock up. ABS accomplishes this objective by controlling hydraulic pressure applied to brake at each wheel. Anti-Lock braking occurs only when brakelight switch is closed and EBCM determines one or more wheels is about to lose traction during braking. The EBCM will then control hydraulic modulator to change brake pressures several times each second to keep wheel(s) from locking and provide driver with maximum vehicle control.

If any wheel(s) begins to approach lock-up, EBCM will control motors and solenoids appropriately, to control brake pressure to affected wheel(s). During ABS operation, solenoids are turned on to isolate brake pressure to each wheel independently. The EBCM then controls current to ABS motors to regulate brake pressure.