Rodeo LS 2WD V6-3165cc 3.2L SOHC (6VD1) (1997)
Electronic Brake Control Module: Description and Operation
4 Wheel Antilock Brakes
Electronic Brake Control (EBCM)
COMPONENTS
The controlling element of ABS is a microprocessor based EBCM. Inputs to the system include wheel speed sensors accelerometer, brake switch,
ignition switch and unswitched battery voltage. Outputs include three bi-directional motor controls, three solenoid controls and the enable relay. A
serial data line is used for service diagnostic tools and assembly plant testing.
FUNCTION
The EBCM monitors the speed of each wheel. If any wheel begins to approach lockup and the brake switch is closed (brake pedal depressed), the
EBCM controls the motors and solenoids to reduce brake pressure to the wheel approaching lockup. Once the wheel regains traction, brake
pressure is increased until the wheel again begins to approach lockup. This cycle repeats until either the vehicle comes to a stop, the brake pedal is
released or no wheels approach lockup. Additionally, the EBCM monitors itself, each input (except the serial data link) and each output for proper
operation. If any system malfunction is detected, the EBCM will store a DTC in nonvolatile memory (DTCs will not disappear if the battery is
disconnected).