Check the resistance between pins #1 and #2 of the engine coolant temperature sensor.
Resistance:
- At cool temperature engine fluid approx. 20°C: approx. 2.5 kN
- At cool temperature engine fluid approx. 80°C: approx. 0.3 kN
Removing
1. Drain the coolant on a cold engine.
2. Disconnect the wiring connector on the underside of the vehicle.
3. Unscrew the coolant temperature sensor.