Coolant Temperature Sensor
- Disconnect battery ground cable and electrical connector from sensor. Connect an ohmmeter between sensor terminals. Reading should be as specified. See 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 °F (°C) | Ohms |
|---|---|
| 32 (0) | 5900 |
| 68 (20) | 2500 |
| 104 (40) | 1180 |
| 140 (60) | 600 |
| 176 (80) | 325 |