Rio L4-1.5L (2001)
Electronic Brake Control Module: Description and Operation
ABS control unit
The ABS control unit performs the following functions.
Controls the ABS
Calculates vehicle speed
Self-diagnostics: Stores malfunction codes, performs ABS control unit self-diagnostic and fail-safe functions with two separated microprocessors.
The ABS control unit continuously checks locking of each wheel and controls each valve to adjust brake fluid pressure if required. The ABS control
unit also checks that components are working properly and stops ABS if a malfunction is detected.
Then, it is operated as a standard brake system.