ECM Code & Instant Snapshot: Notes
WARNING: This page is about a different car, the 1990 Cadillac Fleetwood and 1990 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
ECM CODE snapshot permits review of ECM data parameter values which were present at the time a code was set. If more than one code was set, the values associated with the last code will be stored. All displayed data will be prefixed by the letter "L".
The ECM INSTANT snapshot feature permits technician initiated recording of ECM data parameters at a particular instant, as chosen. All displayed information will be prefixed by the letter "S".