Hyundai Sonata: Engine Coolant Temperature Sensor (ECTS). Description and Operation
Description
Engine Coolant Temperature Sensor (ECTS) is located in the engine coolant
passage of the cylinder head for detecting the engine coolant temperature. The
ECTS uses a thermistor that changes resistance with 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 fuel injection duration
and controls the ignition timing using the information of engine coolant temperature
to avoid engine stalling and improve drivability.
Intake Air Temperature Sensor (IATS). Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the IATS connector.
3.
Measure resistance between th ...
Engine Coolant Temperature Sensor (ECTS). Specifications
Specification
Temperature
Resistance (kΩ)
°C
°F
-40
-40
48.14
-20
-4
...
See also:
Transmitter. Repair procedures
Inspection
1.
Check that the red light flickers when the door lock or unlock
button is pressed on the transmitter.
2.
Remove the battery ( ...
Troubleshooting
Troubleshooting
Trouble Symptom
Probable cause
Remedy
Vehicle pulls to one side
Scoring of driveshaft ball joint
Replace
...
Filler-Neck Assembly. Repair procedures
Removal
1.
Disconnect the fuel filler hose (A), the vapor tube quick-connector
(B), and the ventilation tube quick-connector (C).
2.
...
