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

Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

ECT Sensor Inspection

Check ECT sensor resistance as follows.
- Check resistance between terminals "1" and "2". Make sure its resistance decreases as its temperature increases.
If measured resistance is out of specification, replace ECT sensor (1).

ECT sensor resistance
-20 °C (-4 °F): 13.51 - 16.17 kOhms
20 °C (68 °F): 2.290 - 2.620 kOhms
80 °C (176 °F): 0.309 - 0.331 kOhms