Description
(1) coolant temperature sensor
"a" 2-way black connector
Supplier: BOSCH
The sensor is a resistive, negative temperature coefficient (CTN), sensor
Role
The engine coolant temperature sensor informs the engine ECU of the temperature of the engine coolant fluid
Function
The NTC (Negative Temperature Coefficient) resistance value changes in relation to the change in the temperature
- When the temperature increases, the resistance value decreases
- When the temperature decreases, the resistance value increases
Electrical features
"A" Resistance (OHMS)
"B" resistance according to the temperature
"C" coolant temperature (°C)
| coolant temperature | resistance |
|---|---|
| -40 °C | 48800 ohms |
| -30 °C | 27410 ohms |
| -20 °C | 15970 ohms |
| 0 °C | 5970 ohms |
| 10 °C | 3810 ohms |
| 20 °C | 2500 ohms |
| 30 °C | 1680 ohms |
| 40 °C | 1150 ohms |
| 50 °C | 810 ohms |
| 60 °C | 580 ohms |
| 70 °C | 420 ohms |
| 80 °C | 310 ohms |
| 90 °C | 230 ohms |
| 100 °C | 180 ohms |
| 110 °C | 140 ohms |
| 120 °C | 110 ohms |
| 130 °C | 80 ohms |
| channel number | allocation of channels of connector |
|---|---|
| 1 | information: coolant temperature sensor |
| 2 | earth |
Learning / initialisation
Not applicable