Errors:

The C.C.E cannot be tested directly via the Alta Tester.

To the injection control unit, which already possesses a sophisticated self-diagnosis, the possibility has been added to test and display the more important functions of the ALFA ROMEO CODE.

Dialogue between the C.C.M. and the Alta Tester begins when the key has been turned to MARCIA and when communication between the C.C.M. and the C.C.E has ended.

The information, concerning the ALFA ROMEO CODE, supplied to the Alta Tester, may belong to two different environments.

Errors:

Generally displayed by the tester with priority depending on the importance.

There is a counter inside the control unit, which is activated when an error is stored and it decreases each time the error is no longer present; when the counter reaches zero, the control unit erases the error from the memory.

Therefore, the error memorised can be distinguished as PRESENT or not PRESENT.

The errors memorised are:

• Serial line not active, code not received or time-out: this error indicates that the control units (C.C.E. and C.C.M.) have not succeeded in communicating and the probable causes can be line interrupted or short circuited or some problem on the actual control units (or - with brand new system - faulty or disconnected aerial or faulty or lacking Transponder).
• Received incorrect code: the injection control unit has received from the C.C.E. a code that does not correspond to its memorised MASTER CODE; the probable cause can be an exchange of the injection control unit or the use of another main key during re-memorisation.
• Incorrect code in the C.C.E.: this means that a key unknown to the control unit has been inserted and starting of the car has not been allowed.

Parameters:

This is the environment of the Tester after connection with the C.C.M. (if no errors are present).

This environment is used to display the engineering parameters which define the status of a system.

The parameters are the following:

• brand new C.C.M.
• Starting inhibition procedure: (an un-memorised key has been inserted, the C.C.M. has not been enabled to start by the C.C.E.)
• brand new C.C.E. connected correctly