I recall a bulletin that the internal hose on the 95? pump was defective and could be replaced, check with your dealer!
The locking pumps that are effected are built as of (Aug94) 140 800 28 48, after chassis #A284726 they would have been modified. It seems they had a defective hose inside causing a leak. the replacement hose is available as Q480 0001. This may or not be your problem, but if you hear the pump running and nothing is activated check that. These pumps also shut down if they can not develop pressure or vacuum.

 

the one under the seat is for central locking and unlocking, backup assist rods if yagot them, lumbar, HVAC assist, and the trunk handle. The handle was moved to the "close assist pump" in a bulletin in 94 I think and is that way on a 95. the pump also handled non electric headrests, and provides the trunk release function and fuel filler door.