I've located the TCU in my 91 Accord and I found a site or two that
explains in words how to remove it but I'm still not sure what screws
need to be undone. Do the screws bolting the case down to the floor
have to be removed or the ones on the case itself. A URL with a
picture would be real helpful if available. Thanks.

 

4 in floor first then unhook the ecu and tcu wiring harness' then flip over and youll see the rest

 

4 in floor first then unhook the ecu and tcu wiring harness' then flip over and youll see the rest

 

4 in floor first then unhook the ecu and tcu wiring harness' then flip over and youll see the rest

 

4 in floor first then unhook the ecu and tcu wiring harness' then flip over and youll see the rest