Do you have 12 volts across the fan motor or are you just measuring from the
fan wile to ground? If 12 volts across the fan the motor is bad If 0 volts
across the fan and 12 volts to ground the ground circuit is open...

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Provide +12 and negative to the fan (disconnect it from the Honda while
testing). Don't worry about polarity, you only have to do it for a
second to see if it works. I use a little 12 v. battery from a
motorcycle or alarm system for such tests. Portable.
'Curly'

I was having the same problem with the AC fan in my 1994 Accord. It would
come on if I tapped on the shroud but would shut back off after a few
seconds or would run weak. I knew then it was most likely the fan motor -
probably the brushes are very worn. So, in an attemp to put off having to
buy a new motor, I took it out and sprayed WD40 into a little hole in the
side of the fan motor - not what I can recommend for everyone. Anyway I
plugged the motor back in and it ran strong - no more off and on stuff. Put
the whole assembly back together and it's been working fine ever since then.

James

Thanks for all of your help. I just tapped on the fan motor and it kicked
back on. But of course the a/c is still not blowing cold. So time to keep
digging!!