I've seen stuff ohm out good cold only to fail when hot.

Also, wiggle that wiring while you are ohming it out to check for intermittent opens.

It would be best to monitor the running signal with an O scope as you wiggle the wiring to see if it drops out in use.

A data logger is real helpful in intermittent faults.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.