General Description

EBTCM/BPMV:

The Electronic Brake/Traction Control Module (EBTCM) is the ABS/TCS/ICCS control computer, and is mounted to the Brake Pressure Modulator Valve (BPMV). Its function 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, traction control and ICCS function and turn ON the ANTILOCK and/or Traction Control lamps in the instrument cluster. The EBTCM transmits torque request signals to and receives delivered torque signals from the PCM. The EBTCM also receives signals from the suspension controller. The EBTCM communicates with the IPC while in the diagnostic mode. For further information regarding ABS self diagnosis and EBTCM trouble codes. Testing and Inspection