Kia Niro: Engine Control System / Engine Coolant Temperature Sensor (ECTS) Description and operation
| Description |
Located in the engine coolant passage of the cylinder head, Engine Coolant Temperature Sensor (ECTS) detects the engine coolant temperature. The ECTS uses a thermistor with resistance in proportion to the temperature.
The electrical resistance of the ECTS decreases as the temperature increases, and increases as the temperature decreases. The reference +5V is supplied to the ECTS via a resistor in the ECM. That is, the resistor in the ECM and the thermistor in the ECTS are connected in series. When the resistance value of the thermistor in the ECTS changes according to the engine coolant temperature, the output voltage also changes.
During cold engine operation, the ECM increases the frequency of fuel injection and controls the ignition timing using the information of engine coolant temperature to avoid engine stalling and improve drivability.
Engine Coolant Temperature Sensor (ECTS) Specifications
Specification
Temperature
Resistance (kΩ)
°C
°F
-40
-40
48.14
-20
...
Engine Coolant Temperature Sensor (ECTS) Schematic diagrams
Circuit Diagram
ECTS [Water Temperature Control Assembly]
Harness Connector
ECTS [EGR Cooler Tube]
Harness Connector
...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: Battery Pack Assembly Repair procedures
Removal
•
Be sure to read and follow the “General Safety Information and
Caution” before doing any work related with the high voltage system.
Failure to follow the safety instr ...
Kia Niro 2017 (DE HEV) Service Manual: Mode Control Actuator Components and components location
Components Location
1. Mode control actuator [LH]
2. Mode control actuator [RH]
...
