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
Vehicle Speed Sensor (VSS):
The
Vehicle Speed Sensor provides information to the ECM/PCM for control of idle speed and transmission converter clutch engagement as well as controlling canister purge of the fuel evaporative emission system. This signal is generated by an optical sensor in the speedometer head or a permanent magnet generator located in the transmission.
