Diagnosing which section of an ECM motor that has a problem has never been easier.
The SideWinder is easy to use! Using the tool's first test, by rotating the motor shaft, causes the motor to generate a back-EMF voltage, which is displayed by the phase LEDs. Comparing the brightness of these LEDs shows how the three phases are working. The second test checks for any shorts or grounds between any of the windings and motor frame. The 3 LEDs display any faults.

Full color information Zebra Low Voltage Tester Flyer