This video about how to debug an icemaker failure with a voltmeter is potentially helpful, but I haven't figured out which kind the IMC-701 is, so I haven't taken it apart and tried it yet. https://www.youtube.com/watch?v=OWgZg8BD21o
Even without the model# for your fridge and searched IMC-701 icemaker troubleshooting, I did find this at hunker.com that might help:
GE Ice Maker Isn't Working
When your GE refrigerator isn't making ice, you'll first want to identify the shutoff switch for your refrigerator's ice maker. Shut off this part of the appliance and leave it off for at least 30 ...