21.ANTI-LOCK BRAKE SYSTEM (ABS) Downtown 300i ABS 2. Front wheel speed & Rear wheel speed & Battery volt Battery volt: Standard 9.6~16.7V KYMCO Diagnosis 01 Fr Speed 5 km/hr Re Speed 5 km/hr Battery Volt 12.6V You can turn the front or rear wheel to check if the wheel speed is figured. 21-13