Umm... the fuse/relay box under the hood... open your hood, it should be on the driver's side fender area, a black plastic box. Remove the cover. There, you should see fuses and relays... if you changed one relay, chances are you changed it inside this box. If not, then you didn't actually replace the relay you want. Once you remove the cover from the box, flip the cover over, and it should give you a diagram to show which fuse and relay is for what. The relays are the big squares on the diagram. One should say something like "Headlamp Open" and the other "Headlamp Close" or something like that, but they are literally right next to each other. Replace the closing relay since the doors are not closing. If you replace it and still have no luck, get a testlight and pull out the close relay, test all the pins for postive and negative. Get a buddy to sit in your car and turn the headlights on, then off. Since the doors will recieve the close signal when you turn them off. Keep your testlight in one pin while your buddy turns off the lights. Repeat for each other pin. Then switch around to testing for negative and repeat again. You should get at least one pin that will become positive for about 1 second when the lights are turned off, and perhaps one that becomes negative, but it may be negative all the time.
Or the simpler approach, since you know your headlight doors open properly, pull out the open relay and stick it in the close relay's spot. Now get your buddy to turn off the headlights, listen for the relay clicking. The doors should now close. If they don't, try again and simply listen for the relay clicking as you turn off the lights. If it doesn't click you have a problem between the battery and the relay (battery > fuse > body computer > relay). If it does click and the doors still don't close, your problem is between the relay and the the headlight door motor. But since it opens fine that will mean you have a wiring problem.
If you still REALLY think it's your body computer (yes, the body computer does give the signal to open and close the doors). Take off the passenger side kick panel, unbolt the body computer (two 7/16" nuts), get a testlight and a wiring diagram, and stick the testlight into the pin for the close signal, and turn your lights on then off. If you get no light, your body comp *might* be bad. It still could be a fuse or your headlight switch, but probably not the headlight switch.
Tell me what happens!
