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.

Engine Speed

Engine speed signal is received from ignition coil. Electrical signals from ignition coil are sent to ECM where time between signals is used to calculate engine speed. This information is used by ECM for controlling fuel mixture, EGR and air injection system.