Originally Posted by IKZ
How to I go about bypassing it to confirm a bad compressor?
Just remove the serpentine belt and run the engine briefly without the belt, listening for the difference. Do not run the engine for more than a minute as without the drive belt, you have no water pump for engine cooling, and it ain't real good to run without the alternator. This is also an easy way to check for a noisy water pump, power steering pump or idler. Running w/o the belt will probably set a check engine light, which you might have to clear by disconnecting the negative battery cable if you don't have a scan tool or access to one. Then, you've got to re-do all your radio pre-sets and so on.
When I bought my 90 Buick LeSabre it had a short belt routed to bypass the AC compressor, so I know that can be done. I imagine you would need to figure an alternate routing, then measure the distance around the pulleys allowing for the tensioner, then buy a belt the appropriate length with the right number of ribs.