How do you check the ECM on a Goodman motor?

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BEFORE replacing the ECM motor assembly or the end bell, first check the motor with a Goodman #UTT- 01 UltraCheck-EZTMdiaganostic tool . If the motor runs with the diagnostic tool, the motor is good. To check the end bell, see the previous variable speed testing section of this manual before replacing the end bell. b.

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