Seville V8-273 4.5L (1989)
2.
Depress the "off" and "warmer" buttons on the Climate Control Panel simultaneously and hold until all display panel segments illuminate which
indicates the beginning of the diagnostic readout. The purpose of illuminating the two display panels is to check that all segments of the displays
are working. If any of the segments are inoperative, the affected display panel will need to be diagnosed.
3.
After the segment check, any trouble code stored in computer memory will be displayed on the "Data Center." These trouble codes will appear
prefixed with an "E" for ECM codes, or "B" for BCM codes, to designate which computer detected the malfunction. The codes will be followed
by the word "HISTORY" if the code is intermittent, and nothing if it is a hard code. If any trouble codes are displayed or if diagnostics cannot be
entered, refer to the SELF-DIAGNOSTIC CIRCUIT CHECK for the proper diagnostic procedure.
4.
To view ECM DATA and perform SWITCH TEST refer to BASIC OPERATION under ECM DISPLAYS.
5.
To get out of the diagnostic mode, depress the "RESET" button or turn the ignition switch off for 10 seconds. Trouble codes are not erased when
this is done. The temperature setting will reappear in the display panel.
