Checking Thermostat

Checking thermostat




- start the engine and run it until the engine coolant temperature (ECT) reaches approximately 100°C (212°F)
- when the engine coolant temperature (ECT) is 100°C (212°F) activate the engine cooling fan (FC) with the engine running
- wait for 90 seconds
- turn off engine cooling fan (FC)
Read off the engine coolant temperature (ECT). If it is 85 °C (185°F) or lower when the fan stops, the thermostat is defective.





Was a fault detected?

Yes - Replacing component

No - DONE

-------------------------------------------------

Replacing component




Replace thermostat according to Thermostat / temperature sensor, engine coolant, replacing Removal and Replacement.

Continue - FAULT FOUND

-------------------------------------------------