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HOMESERVICE MANUALSHYUNDAI2003XG350 BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTI-LOCK BRAKESANTI-LOCK BRAKE SYSTEMABS CONTROLTRACTION CONTROL SYSTEM (TCS)
2003 Hyundai XG350 Base

Traction Control System (TCS)

2003 Hyundai XG350 BaseSECTION Traction Control System (TCS)
  1. NORMAL MODE
    Fig 1: TCS During Normal Mode
    G01355109Courtesy of HYUNDAI MOTOR CO.
    • In the normal driving condition, TC valve (normally open) is the passage between the master cylinder and the each wheel cylinder.
    • When brake pedal is applied, brake pressure is delivered to the wheel cylinders via NO-TC valve and all solenoid valves inside the hydraulic unit are deactivated.
    • In case of TCS malfunction it does not affect brake operation.
  2. PRESSURE INCREASE MODE
    Fig 2: TCS During Pressure Increase Mode
    G01355110Courtesy of HYUNDAI MOTOR CO.
    • If a front wheel spin is detected, TCS begins a brake control to decrease a wheel spin.
    • Hydraulic shuttle valve (HSV) is opened. Brake fluid is supplied from the master cylinder by motor operation to the spin wheel via HSV.
    • TC valve is closed (ON). Brake pressure generated from motor pump is delivered only to the front wheel.
    • Inlet valve remains open to deliver the brake pressure generated from motor pump to the spinning wheels.
  3. PRESSURE DUMP MODE
    Fig 3: TCS During Pressure Dump Mode
    G01355111Courtesy of HYUNDAI MOTOR CO.
    • When the wheel deceleration is under the threshold and the wheel spin is reduced under a slip threshold, applied brake pressure is reduced to get a optimum traction force.
    • Outlet valve is open to release the brake pressure and inlet valve is closed to block the pressure increase from the motor pump.
    • Hydraulic shuttle valve (HSV) remains opened, TC valve is ON.
    • Motor is ON, to dump the brake fluid being released from the lock-up wheel.
  4. PRESSURE HOLD MODE
Fig 4: TCS During Pressure Hold Mode
G01355112Courtesy of HYUNDAI MOTOR CO.
RENDER: 1.0x

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