Engine (Coolant) Temperature Sensor
Faults in engine (coolant) temperature sensor circuit may set Code 13. To test system, see CODE 13 diagnostic procedures in appropriate TESTS W/CODES article.
To test sensor, disconnect sensor connector. See ENGINE (COOLANT) TEMPERATURE SENSOR LOCATION table. Measure resistance across sensor connector terminals. If resistance is not as specified in ENGINE (COOLANT) TEMPERATURE SENSOR RESISTANCE table, replace sensor.
ENGINE (COOLANT) TEMPERATURE SENSOR LOCATION
| Application | Location | |
|---|---|---|
| Altima | At Right Rear Corner Of Cylinder Head | |
| Maxima | ||
| VG30E Engine | On Coolant Inlet Housing | |
| VE30DE Engine | On Intake Manifold, At Flywheel-End Of Left Cylinder Head | |
| NX & Sentra | ||
| 1.6L | On Intake Manifold, At Timing Chain End Of Engine | |
| 2.0L | At Front Of Engine, Above Oil Filter | |
| Pathfinder & Pickup | On Coolant Outlet Housing | |
| Quest | On Coolant Inlet Housing | |
| 240SX | At Right Front End Of Cylinder Head | |
| 300ZX | On Coolant Inlet Housing | |
ENGINE (COOLANT) TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|---|
| 68 (20) | 2100-2900 |
| 122 (50) | 680-1000 |
| 176 (80) | 300-330 |
NOTE:
Oxygen sensor with a heater element is identified by 3-wire connector.