On a washer, the thing that draws the most current is the motor.
The motor could be the only problem, or the control could also affect the motor, since it determines which speed to send voltage to in order to wash. There's a tech sheet inside the machine control panel for you to read and check this out. It gives the resistance readings for the motor so you can rule it out (or in).
As with any diagnostic procedure, you will have to own a volt/ohm meter and know how to use it.