NOTES WITH REGARD TO DIAGNOSIS


1.
Phenomenon
Explanation of phenomenon

  • When the ABS hydraulic unit operates, the operating noise is generated from the motor. (Squeak noise)
  • Noise is generated from the brake pedal together with the vibration. (Gride noise)
  • When ABS operates, the system repeats the activation and deactivation. At this time, the noise is generated from the chassis components. (Clonk: Suspension, Squeaky: Tyres)

These noises are generated when the system and brake pedal operate normally, and they do not indicate any sign of malfunction.

  • A slight shock may be felt when depressing the brake pedal lightly during the low speed driving.
  • Small clicking noise may be heard from the engine compartment.

This noise is generated when the system operation check (startup check performed at the vehicle speed which is a few km/h higher than the predetermined vehicle speed) is performed, and it does not indicate malfunction.
2.
3.