There are two separate diagnostic systems built into the 1988-89 Reattas and there is some confusion about them. Perhaps this article will explain the differences and make it easier to understand the function of each system.
1. Vehicle Diagnostic System For Owners
This system is intended to be a reference for the car owner to help him understand what the error messages mean that are sometimes displayed on the Reatta's CRT screen by the on-board computers.
This system can be accessed by pressing the Status button on the bottom left of the CRT screen, and then selecting Diagnostics. Once on the diagnostics screen you can select from a number of items on the screen. When you select any of those items you will see an OK button beside them. If you start pressing the OK buttons a simulation will be displayed of what error messages you would see in the event something actually went wrong with your Reatta.
Those messages are for information only. They are not an indication of a current problem with your car.