If you wonder whether the tachometer built into the motor is working, consider doing the following: At the MCU, separate the connector with the black wires leading to the motor/tachometer, connect a Voltmeter to terminal 4 and 5 (the two wires coming from the tachometer), and then spin the drum. You should then notice a voltage proportional to how fast the drum spins. (Of course, do all this with the washer unplugged.) The resistance across Terminal 4 and 5 (again, on the wires coming from the tachometer) is approximately 116-118 Ohm. I believe that's what it should be (roughly). Axel