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): Specifications




Engine Coolant Temperature (ECT) Sensor







NTC resistance.

Temperature (degree C) R (Ohms) V (Volt)
0 5740 2.65
10 3700 2.10
20 2450 1.62
40 1150 0.92
80 318 0.29
100 184 0.17