October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Hardware Limited Operational Strategy (HLOS)

If a number of system or sensor failures are present and ECA is not receiving enough information to operate, ECA will switch to HLOS mode. ECA will output fixed values to allow operation of vehicle. Driveability concerns will be present. ECA will not output service codes in this mode.