Quote Originally Posted by Andy View Post
Klaus replied that the A and B channels are independent because they need to fire 180 degrees out of phase with each other.
Thx again Andy,

We ran a further test to check the function of the mini sensor. With a breakout chord connected between the input plug and the box we rotated the flywheel around and measured the voltage across the various parts of the plug. The lower sensor's A channel dropped from 5v to (virtually) zero at the appropriate time. The B channel's voltage didn't change throughout the entire rotational cycle.

We also checked the spark generated by the coils and when on the R side the appropriate coil did not fire either (which stands to reason).

Given that we had previously swapped the L box for the R box and the problem remained on the R side that really confirms an input (rather than output) problem and the above test would pretty much confirm a problem with the lower sensor B channel (sensor or wiring). Rather than spend many more dollars fault finding I've ordered a replacement sensor from Cub Crafters USD250.

I truly hope this solves the problem. I think it will but it has been a crafty gremlin so who knows..