General Information

Component Location





General Description

The instantaneous brake disc temperature will be computed at the wheel brakes of all driven wheels with the following inputs : (1.vehicle and brake constants, 2.the vehicle speed, 3.all wheel speeds, 4.the computed brake pressure during active brake torque control, 5.the vehicle deceleration during braking with and without ABS control.) A failure is detected if the computed brake disc temperature exceeds 500 °C at a minimum one wheel brake. The BTCS remain deactivated until the computed brake disc temperature of all wheel brakes drops below 350 °C. With the ignition turned off, the ECU is supplied with energy via power supply voltage until the computed brake temperature at the driven wheels drops below 70 °C.

DTC Description

If the HECU decides that the Disc is over-heated (above 500 °C), then it turns the TCS lamp ON and inhibits BTCS operation to prevent overheating of the disc.
If the calculated temperature becomes lower than specified value (approx. 350 °C), then the HECU turns the TCS lamp OFF and operates the BTCS again.

DTC Detecting Condition