Coolant Temperature Sensor
Disconnect coolant temperature sensor connector. Using an ohm meter, measure resistance between sensor terminals. See COOLANT TEMPERATURE SENSOR RESISTANCE table.
COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature |
Ohms |
| Alfa Romeo |
| 68°F (20°C) |
2100-2900 |
| 122°F (50°C) |
700-1000 |
| 176°F (80°C) |
250-400 |