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.

Vehicle Speed Sensor

Vehicle speed sensor consists of a lead switch and magnet built into speedometer head. As magnet rotates with speedometer cable, its magnetic force causes lead switch to turn on and off. This on/off pulse is sent to ECM and interpreted as vehicle speed.