Test 10: Coolant Temperature Sensor
Check that sensor is properly installed and firmly seated. Check that cooling system is full. Bleed system. Check resistance between switch connections. If resistance is incorrect, replace sensor. If resistance is correct, trace sensor circuit and repair wiring.
COOLANT TEMPERATURE SENSOR RESISTANCE
| Application Coolant Temperature | Ohms | |
|---|---|---|
| 2.5L & 2.7L | ||
| 12°F (-10°C) | 7000-11,600 | |
| 70°F (20°) | 2100-2900 | |
| 175°F (80°) | 270-400 | |
| 3.5L | ||
| 12°F (-10°) | 8200-10,500 | |
| 70°F (20°) | 2200-2700 | |
| 175°F (80°) | 300-360 | |