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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System >> System Description >> VDC Function
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VDC Function

  1. In addition to TCS/ABS function, VDC detects driver's steering operation amount and brake pedal travel from steering angle sensor and pressure sensor. Using information from yaw rate/side G-sensor and wheel sensor, VDC judges driving condition (conditions of under steer and over steer) to improve stability by controlling brake application to 4 wheels and engine output.
  2. SLIP indicator lamp flashes to inform driver of VDC operation.
  3. During VDC operation, body and brake pedal lightly vibrate and mechanical noises may be heard. This is normal.
  4. If vehicle is rotated on turn table, or rolled and rocked on ship, ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp may turn ON. In this case, start engine on normal road again. If ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn OFF after restart, it is normal.
  5. When driving in steep slope such as bank, ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp may turn ON. In this case, start engine on normal road again. If ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn OFF after restart, it is normal.
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