I have a 2009 JDM GSR. I have this issue with the breaks when I slam the peddle and when it goes to the ABS range, the driver side wheel locks up and the car gets dragged for long distance. I can’t feel ABS working. But brakes work fine in non-abs range. Although this is the case the computer doesn’t show any error or warnings. My mechanic says it’s to do with a faulty pump but he’s also not sure. If it’s to do with the pump, doesn’t it throw a warning? Last week this happened and I crashed into another vehicle but thankfully minor damage.