At work today... a bike brought in for non functional ABS and dead rear brake. New ABS unit and rear master. Spent the day doing all that is it requires pulling the bike to bits (shock out and swingarm axle out) only to find it hasn't solved the issue. Brakes functional but no ABS, warning light on solid. Spent a bit of time thinking and did a walk around of the bike and spot something. On the front - ABS ring is located on the opposite side to the sensor. That'll do it. How does it happen? Someone has installed the front tyre the wrong way and fitted the rim back so that the tyre is in the correct orientation. Never mind the obvious that the sensor and ring are nowhere near each other. Hard to believe someone could miss that on a tyre change, but it happened. Got the tyre off, checked the tyre valve... just about to break. Put a new one on, remounted the tyre and balanced the rim, refitted, bikes all sorted. But a whole lot of time, money and effort wasted.