Technician Safety Information

CAUTIONS WITH REGARD TO DIAGNOSIS
The ABS system controls braking by means of electronic control. Accordingly, the conditions listed in the table below may occur, but these are generated when the ABS is operating normally, and are considered normal.

System check sound:
When starting the engine, a thudding sound can sometimes be heard coming from inside the engine compartment, but this because the system operation check is being performed.
This is considered normal.

ABS operation sound
1. Sound of the motor inside the ABS hydraulic unit operating (whine)
2. Sound is generated along with vibration of the brake pedal. (scraping)
3. When ABS operates, sound is generated from the vehicle chassis due to repeated brake application and release. (Thump: suspension; squeak: tires)

ABS operation (Long braking distance)
For road surfaces such as snow-covered roads and gravel roads, the braking distance for vehicles with ABS can sometimes be longer than that for other vehicles. Accordingly, advise the customer to drive safely on such roads by lowering the vehicle speed and not being overconfident.