fisher paykel won't drain, not the pump or diverter valve?

Ok after countless house of troubleshooting, I have a problem. My washer still won't drain. I took the pump apart and it is clear and spins freely. The diverter valve was replaced today as well as I had hoped that this was the problem. I removed the orange leads from the motor controller and the pump went right into discharging down the drain no problem. During the wash, the machine seems to get stuck in a fault where the pump only recirculates the water back into the basin. I'm suspecting the motor controller assembly but I am holding back on purchase in a desperate hope that it isn't the expensive part. Any suggestions?