How can I do an ABS test. I am currently having an issue with my ABS system on my 2013 or 1200 GS. I recently performed the brake flush and bleed process with no issues then after about five days of riding the ABS light came on and will not go off. The ABS brakes are not working because I am able to lock up the back wheel. I am getting no error codes on my 911 tool. I have also checked the front and rear wheel sensors in the live segments when I spin the wheels they register a speed. Any questions any suggestions to help. Thanks