Sensor Testing
- Measure the resistance across the coolant temperature sensor terminals. Compare sensor resistance to coolant temperature. Replace coolant temperature sensor if resistance does not meet specifications.
TESTING COOLANT TEMPERATURE SENSOR
| Temperature | Resistance (Ohms) |
|---|---|
| 15 °F (-10 °C) | 7000-12,000 |
| 50 °F (10 °C) | 3000-5000 |
| 70 °F (21 °C) | 2000-3000 |
| 125 °F (52 °C) | 700-1000 |
| 175 °F (80 °C) | 200-400 |