Kia Picanto: Engine Control System / Engine Coolant Temperature Sensor (ECTS)
Specifications
▷ Type: Thermistor type
Temperature
|
Resistance (kΩ)
|
°C
|
°F
|
-40
| -40
| 48.14
|
-20
| -4
| 14.13 - 16.83
|
0
| 32
| 5.79
|
20
| 68
| 2.31 - 2.59
|
40
| 104
| 1.15
|
60
| 140
| 0.59
|
80
| 176
| 0.32
|
100
| 212
| 0.19
|
110
| 230
| 0.145 - 0.149
|
120
| 248
| 0.12
|
Description and operation
Located
in the engine coolant passage of the cylinder head, the Engine Coolant
Temperature Sensor (ECTS) is used for detecting the engine coolant
temperature. The ECTS uses a thermistor whose resistance changes with
temperature.
The
electrical resistance of the ECTS decreases as the temperature
increases, and vice versa. 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 of
the thermistor in the ECTS changes with the engine coolant temperature,
the output voltage also changes.
During
cold engine operation, the ECM increases the fuel injection time and
controls the ignition timing based on engine coolant temperature to
avoid engine stalling and improve drivability.
Schematic diagrams
Repair procedures
| 1. | Turn the ignition switch OFF. |
| 2. | Remove the ECTS.
(Refer to "Removal")
|
| 3. | After immersing the thermistor of the sensor into engine coolant, measure resistance between the ECTS terminals 3 and 4. |
| 4. | Check that the resistance is within the specification.
Temperature
|
Resistance (kΩ)
|
°C
|
°F
| -40
| -40
| 48.14
| -20
| -4
| 14.13 - 16.83
| 0
| 32
| 5.79
| 20
| 68
| 2.31 - 2.59
| 40
| 104
| 1.15
| 60
| 140
| 0.59
| 80
| 176
| 0.32
| 100
| 212
| 0.19
| 110
| 230
| 0.145 - 0.149
| 120
| 248
| 0.12
|
|
| 1. | Turn the ignition switch OFF and disconnect the battery negative (-) terminal. |
| 2. | Remove the air cleaner.
(Refer to Engine Mechanical System - “Air Cleaner”)
|
| 3. | Remove the battery.
(Refer to Engine Electrical System - "Battery")
|
| 4. | Disconnect the engine coolant temperature sensor connector (A). |
| 5. | Remove the engine coolant temperature sensor (B).
Engine Coolant Temperature Sensor :
29.4 - 39.2 N·m (3.0 - 4.0 kgf·m, 21.7 - 28.9 lb·ft) |
 |
| •
| Install the component to the specified torques. |
| •
| Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing. |
| •
| Apply the engine coolant to the O-ring. |
| •
| Carefully insert the sensor into the installation hole without damaging it. |
|
| 1. | Install in the reverse order of removal. |
| 2. | Supplemment the engine coolant.
(Refer to "Engine Mechanical System - "Coolant")
|
Specifications
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Pressure
[kPa (kg/cm² / psi)]
Outp ...
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NON- ISG
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Type Magnetic field sensitive type Coil Resistance (Ω) 819 - ...
Other information:
The following lists are vehicle checks
and inspections that should be performed
at the frequencies indicated to
help ensure safe, dependable operation
of your vehicle.
Any adverse conditions should be
brought to the attention of your dealer
as soon as possible.
These Owner Maintenance ...
Please prepare bulbs with appropriate
standards in case of emergencies. Refer
to “Bulb Wattage” on page 9-04.
When changing bulbs and sorts, first
turn off the engine at a safe place,
firmly apply the side brake and take
out the battery's negative (-) terminal.
WARNING
Working on t ...
Boost Pressure Sensor (BPS)
Crankshaft Position Sensor (CKPS)