Reprogram Keyless entry

(DISCLAIMER: The following information has been taken from various forums and was posted by numerous members)

This should be good for 94-96



There is a "programming connector" plug with two wires, both black and
white striped, coming into the backside of the plug and nothing plugged
into the plug. To reprogram the remote keyless system, you will put a
paper clip or some short wire into the plug to connect across the two
terminals to connect the wires together.

If you redo one transmitter, you will have to redo all transmitters.
Connecting across the two terminals in the "programming connector" will
make the system forget about all of your transmitters.

1. Sedan: look for the connector inside the left side of the trunk compartment behind the insulation.

2. Wagon: remove the right back body pillar finish panel to access the connector.

3. Using a paper clip or some short wire, connect across the two
terminals in the connector. The system will click as it locks and then
unlocks the locks.

4. Press any key on your transmitter. The system will go through the
lock unlock cycle again a couple of times to confirm the reprogramming.

5. If you want to disable the unlock on shifting into Park feature,
perform the following sequence three times with no more than one second
between presses. Press the door lock button, press the door unlock
button, press the trunk button. Repeat the sequence two more times with
no more than one second between button presses.

The receiver will cycle through the lock, unlock, trunk sequence three times as verification.

6. To program a second transmitter to the car, repeat steps 4, and if desired step 5.

7. Disconnect the paper clip or short wire across the two terminals on the "programming connector".

8. Now for the step which isn't in the manual. Use one of the
transmitters to lock and then unlock the doors before cranking the
engine to test it.

9. Now, you are finished.

Here's a pic from the FSM



The 91-3 cars had a different procedure. It's
a tad more annoying but if your keyless module still works it's not
bad. These are wagon instructions, I'm sure the sequence for the sedans
is the same but I don't know where the programming lead is.

1 - Open the rear gate and remove (yes remove) the left cargo plastic, the one with the lockable storage.
2 - Turn the ignition key to on (do not start the engine)
3 - You should find a dangling connector, near the wiring harness. This
connector needs to be grounded to the body. There is an existing ground
nearby which works well.

Once you ground the wire, the locks should cycle indicating you are in program mode.

4 - Press a button on one of the remotes and the locks should cycle
again to confirm the program. Press a button on your second remote to
program it.
5 - Remove the ground and turn off the ignition. Your remotes should work!