Retrieving Codes: Notes
WARNING: This page is about a different car, the 1993 Mercedes-Benz 190E. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
On CIS-E vehicles, on/off ratio output is used to diagnose intermittent problems. On CIS-E California vehicles, Diagnostic Trouble Codes (DTCs) are used to diagnose hard failures.