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 logical successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
The engine coolant temperature sensor signal is used by the powertrain control module to modify ignition timing and the air-to-fuel ratio.