Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Vehicle Speed Sensor: Description and Operation
The
vehicle speed sensor, located in the speedometer head assembly, consists of a contact set and magnet that turns with the speedometer cable. Magnet movement causes the contacts to alternately open and close four times per cable revolution. Switching action frequency is interpreted by the PCM as vehicle road speed.