Speed Sensor
Using an ohmmeter, check to see that there is continuity between terminals "A" and "B" 4 times per each revolution of the magnet shaft. If continuity between the terminals is not as specified, replace the speed sensor.
Using an ohmmeter, check to see that there is continuity between terminals "A" and "B" 4 times per each revolution of the magnet shaft. If continuity between the terminals is not as specified, replace the speed sensor.