Engine - Coolant Temperature Sensor/Switch: Testing and Inspection
Coolant Temperature Sensor:
1. Unplug sensor connector. Remove sensor from engine.
2. Place sensor in a container with water and a thermometer. Heat gradually.
3. Check sensor resistance with an ohmmeter:
COOLANT TEMP. RESISTANCE (K OHMS)
20°C (68°F) 2.21 - 2.69
80°C (176°F) 0.287 - 0.349
4. If not as specified, replace sensor.