Corvette V8-5.7L VIN G (1997)
Traction Control Module: Description and Operation
FUNCTION
The function of the Electronic Brake/Traction Control Module (EBTCM) is to monitor the Wheel Speed Sensor (WSS) inputs, determine wheel
slip tendencies, control the brake system while in antilock mode or a traction event and monitor the system for proper operation. The EBTCM
continuously checks the speed of each wheel to determine if any wheel is beginning to slip. If a wheel slip tendency is detected, the EBTCM
commands appropriate valve positions to modulate brake fluid pressure in some or all of the hydraulic circuits to prevent wheel slip and provide
optimum braking. The EBTCM continues to control pressure in individual hydraulic circuits until a slipping tendency is no longer present. If the
EBTCM detects an error, it can disable the Antilock and Traction Control function and turn ON the Antilock and/or Traction Control Indicators in
the instrument cluster. The EBTCM transmits torque request signals to and receives delivered torque signals from the PCM.
Pump Motor Relay and Solenoid Valve Relay
The pump motor relay provides power to the pump motor during Antilock braking and Traction Control. The Solenoid Valve Relay provides
power to the solenoid valves in the Brake Pressure Modulator Valve (BPMV). Both of these relays are an integral part of the EBTCM and cannot
be serviced separately.
