Chrysler Repair: Chrysler Imperial Theft Alarm, chrysler imperial, tail lamps

Question
I wrote you about this subject on Friday and you were kind enough to answer in a few hours.  My car is now at a Chrysler facility and I seem to be getting nowhere with repair, so let me explain in detail the alarm malfunction.  The Theft Alarm on the dash does not operate for turning the system on/off.  When I close the driver's side door after locking the door from the lock system on the arm of the door -- the light on the dash comes on, indicating that the alarm has been activated.  Using the key to unlock the door (it is a key system) on the drivers side does not turn the alarm off.  Sometimes when opening this door (driver's side) the horn sounds, lights flash,etc. then when I go to the passenger side I key unlock that door and the alarm quiets.  Sometimes I can then start the car but this does not always work but after sitting for several hours the alarm 'times out' and will let me start the car.  This is an on/off occurance but is more on than off.  You mentioned that you have a 1990 shop manual which might be helpful to me and the shop.  I will be more than happy to pay for the pages which apply to my vehicle if you would so kindly email or send them to me. I appreciate your help this far.

Answer
Hi Viola,
Thanks for the warm and friendly email. Let me type in the System self-diagnostic test for possible help to you and the shop:
A diagnostic mode is available in the system to verify operation of all monitored switches or circuits. To enter diagnostics, cycle the ignition key to the accessory position 3 times, leaving the key in this position.
Upon entering diagnositics, the park and tail lamps will begin flashing to verify their operation. In addition, the horn will sound twice to indicate that the trunk key cylinder is in its proper position. Returning the ignition to the OFF position will stop the lamps from flashing while keeping the system in diagnostics.
While in diagnostics mode, a horn pulse should occur at each of the following events indicating proper operation:
(1) Beginning with all doors closed, open then close each door. The horn will sound when the door ajar switch closes, and then again when the switch opens. There must be a 1 second delay between closing and opening the switch.
(2) Open, then close the hood. The horn will sound when the hood is opened, and again when it is closed.
(3)  Activate the power door locks in both the lock and unlock directions. The horn will sound after each activation.
(4) Rotate the key in each of the door lock cylinders to the unlock position. The horn will sound as the switch closes, and again when it opens. There must be a 1 second delay bwtween changing switch states, or the horn will not sound.
(5) Cycle the key to the ignition RUN position. A single horn pulse will indicate proper operation of the ignition input. This will also take the module out of diagnostics mode. For any of these tests, if the switch does not remain open or closed for at least 1 second, the horn will only sound once.
The lack of a horn pulse, during any operation, indicates a switch failure, the lack of that input in the Vehicle Theft Security system module, or a failure internal to the module. Check for continuity at the switch, if this is good, check for an open or shorted wire between the switch and the alarm module. Also, check if the SBEC has been replaced recently. Vehicle Theft Security System will not function until 20 engine cranks.