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 Sensor

Engine speed signal is received from negative terminal of ignition coil. Electrical signal from ignition coil is sent to ECU where time between signal is used to calculate engine speed. This information is used by ECU for controlling air/fuel ratio and idle speed.