Very similar problem as Doug. '97 986. Put away for winter, everything worked 100%. Replaced the Immobilizer unit last year, including a waterproof case. I have a spare Immobilizer, as I got a 2nd DME & Immobilizer programmed when I had the first one rebuilt. Battery Maintainer got unplugged over winter. I recharged the battery and replaced the maintainer. Opening up the car for spring. The windows & locks don't work.
Locks
-with fob: Lock, Unlock, Beep. Trunk Works fine
-with dash switch: nothing
-with key: works, both doors, however the alarm light doesn't illuminate
Windows:
-Both Inner & Outer Door Handles: No window movement, can hear relays in doors click
-Console Switches: No movement, hear relays in doors click
-Top Retract & Extension: No window movement. Top works fine.
-w/ Door Key: No movement.
-w/ Durametric, courtesy window actuation, relays click, no movement.
Interior lights work fine.
Immobilizer Fuse, C3 & D1 are 100%. Battery & Alternator Check fine. Have tried battery disconnect to no avail.
I'm thinking Top Latch Relays or Immobilizer Unit.
Suggestions or ideas please. Thank you.