Might be two unrelated problems. You are saying your driver'* door unlocks with the remote but the rest of the doors won't unlock with pushing the remote key a second time and they won't unlock from the two switches on the two doors.
I assume there'* a relay for the driver'* door unlock using the remote and a separate relay that unlocks all the doors from the remote. Thoter at might hint at the source if I'm reading right.
The other thought I have is my 93 had a grounding problem at the buss next to the driver'* door as shown in some pictures already posted here. My manual AC controls went to default which was no control for vacuum so defrost mode, AC compressor was on, but the heat temp control and fan speed controls worked; the POWER DOOR LOCKS DIDN'T WORK either. Then after a few minutes they would both come back on. I suspect that buss ground bar is the same in the 92 model. People have shown the one on the driver'* side where shoes bring in moisture more than passenger side gets. I would think the module controlling the remote door lock procedure would be on the right side and ground at the buss I believe is there...
Does someone have more experience? I don't want to dig out my 93 Service Manual to look these up since there'* too much on my plate today already.
Dual auto air on both