The coolant temperature sensor (CLT/ECT) uses a 2-pin connector carrying a thermistor signal that changes resistance with temperature. The ECU reads voltage across the thermistor to calculate engine coolant temperature.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Signal | Thermistor signal to ECU | ADC |
| 2 | GND | Ground return | GND |
The coolant temperature sensor (CLT/ECT) uses a 2-pin connector carrying a thermistor signal that changes resistance with temperature. The ECU reads voltage across the thermistor to calculate engine coolant temperature.