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Coolant Temperature Sensor
- Disconnect battery ground cable and electrical connector from sensor. Connect an ohmmeter between sensor terminals. Reading should be as shown in Temperature/Resistance Relationship chart.
- Disconnect ohmmeter and check resistance between each terminal and sensor body. A very high resistance denoting an open circuit should be obtained. If sensor does not respond as outlined, replace coolant temperature sensor.
TEMPERATURE/RESISTANCE RELATIONSHIP
| Temperature (Coolant) |
Resistance (Ohms) |
| 14°F (0°C) |
9200 |
| 32°F (0°C) |
5900 |
| 68°F (20°C) |
2500 |
| 104°F (40°C) |
1180 |
| 140°F (60°C) |
600 |
| 176°F (80°C) |
325 |