Traction Control Operation

Traction utilization is a function of tire design, tire inflation pressure, tire load, tire slip angle, level of percent slip, and road condition.

The Traction Control System (TCS) uses the front brake intervention and torque management to provide enhanced acceleration and stability. TCS provides well-balanced performance over a variety of road conditions. The Traction Control System is capable of functioning up to maximum vehicle speed. The system enhances the following general vehicle characteristics:

• Directional control
• Traction
• Maneuverability

The Traction Control System accomplishes there goals through use of speed information, as well as the following:

• Vehicle Speed
  
  To give traction priority at low speeds and directional control priority at high speeds (greater than or equal to 50 MPH). There is no brake intervention at high speeds, only cylinder cutout.
• Speed Difference Of The Non-Driven (Rear) Wheels
  
  To detect a cornering maneuver. Directional control has priority when cornering.
• Vehicle Acceleration & Throttle Position
  
  In situations of low vehicle acceleration the control strategy is more sensitive.
• Brake applied input.

The Traction Control System operates only when the system senses that one or both of the front wheel is slipping or beginning to loose traction. If the system senses that excessive wheel slip is present, the EBTCM will activate the TCS pilot valve and will increase, hold or decrease hydraulic pressure to the front wheel brakes by modulating the front ABS valve solenoids, therefor keeping an optimum slip rate in the front wheels. The TRAC CNTRL lamp on the IPC will illuminate indicating traction control is active.

Traction control is not disabled when the mini-spare wheel is on the vehicle.