Kia Picanto (JA): 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
Specification
▷ Type: Piezo-resistive pressure sensor type
Pressure
[kPa (kg/cm² / psi)]
Output Voltage (V) [Vref=5V]
32.
Specifications
Specification
NON- ISG
Item
Specification
Type Magnetic field sensitive type Coil Resistance (Ω) 819 - 1001 [20°C (68°F)] Pin 2
ISG only
Item
Specification
Type Hall effect type Air Gap (mm) 0.
Other information:
Components and components location
Component Location
1. Driver power window switch 2. Assist power window switch 3 . Body Comtrol Module (BCM) 4 . Door lock knob 5 . Tailgate actuator 6. Door latch lock actuator 7 . Door lock/unlock switch 8 .
Repair procedures
Inspection
1.With the washer motor connected to the reservoir tank, fill the reservoir tank with water.
Before
filling the reservoir tank with water, check the filter for foreign
material or contamination.
