(1) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(2) When vehicle speed reaches 6 mph (10 km/h), check the operating sound volume and compare it with that of the same model.OK: The operating sound is the same volume or less by comparing with that of the same model.
Is the check result normal?
This diagnosis is complete. Carry out adjustment for hydraulic unit installation. (Refer to ).