Operation CHARM: Car repair manuals for everyone.
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): Testing and Inspection

1. With key Off, disconnect coolant temperature sensor connector.
2. Measure resistance between sensor terminals.
3. If resistance is not 700-1000 ohms at temperature of 200°F, replace sensor.