I see that you have read post referring to the issue of rear brake failure. You cannot "remove" the module and bypass both brake lines because the abs control unit is the one that receives the signals from the wheel sensors and it passes the signals to the motorcycle ecu for the odometer, speedometer and TCS. You can simply make a bypass between the rear brake pump and the rear caliper, you will have a good rear braking but without rear abs, and the tcs will continue to work (which does not act on the brakes but rather acts on the handle throttle)…. .all this until you either get an abs module or repair the one you have. I have not read anything referring to "another" solution. The issue is based on "assumptions"...the truth is that air enters the rear circuit, the truth is that the air is introduced by the abs module...but from then on there are only assumptions, 1) maybe a seal? but the strange thing is that there are no fluid leaks along with the air intake… 2) there are “several” ones that started with this problem “after” changing the brake fluid of the circuit (in this forum and in others too) , that could be a sign that there is air "inside" the module, but since the problem persists after several purges, it gives the sensation that the air "enters" the module, now well... where does it enter?, no one clarified /solved. In any case, the problem is "according to my opinion", more related to the brake combining than to the abs. The combined brake is another system within the same abs module. The abs interrupts the braking pressure, and if this pressure exceeds certain parameters, it "returns" said pressure to the brake circuit (that is why a pumping is felt in the brake lever but also a rebound)... but in the actuation of the combined brake (rear only), there is only "push" on the rear line, no rebound on the brake pedal, only push on the rear caliper. This "push" is carried out by "the same" cam that returns pressure to the brake circuit when the abs works and causes the return/rebound in the brake lever/pedal. The problem with the operation of the combined brake is that to "push" liquid, you need liquid... when the combined brake works, the rear brake pedal of the S10 does not descend, so... where does the abs module get liquid from to "push" , well, that liquid is inside, and it is not part of the circuits, it is in a separate reservoir, which is the one used when the braking overpressure exceeds the abs valve, then that overpressure returns to the main circuit (rebound in the lever/brake pedal)……that is why it is important when cycling the abs, to keep the lever and the brake pedal “squeezed/exerting pressure), so that excess pressure releases the valve, and forces the abs to “return ” the liquid to the circuit…..but WHERE DOES IT RETURN IT?……there is no return circuit to the brake reservoir…..it returns it “Inside” the same pump, if there is air inside the abs moduke, it is trapped in the abs