Kia Niro: Engine Control System / ETC (Electronic Throttle Control) System Repair procedures
Throttle Position Sensor
(TPS)
| 1. |
Connect the KDS/GDS on the Data Link Connector (DLC).
|
| 2. |
Start the engine and measure the output voltage of TPS 1 and 2 at C.T.
and W.O.T.
[Throttle Position
Sensor (TPS)]
Throttle angle(°)
|
Output Voltage (V) [Vref=5V]
|
TPS1
|
TPS2
|
0
|
0.5
|
4.5
|
10
|
0.96
|
4.05
|
20
|
1.41
|
3.59
|
30
|
1.87
|
3.14
|
40
|
2.32
|
2.68
|
50
|
2.78
|
2.23
|
60
|
3.23
|
1.77
|
70
|
3.69
|
1.32
|
80
|
4.14
|
0.86
|
90
|
4.6
|
0.41
|
98
|
4.65
|
0.35
|
C.T (0)
|
0.5
|
4.5
|
W.O.T (86)
|
4.41
|
0.59
|
|
ETC Motor
| 1. |
Switch "OFF" the ignition.
|
| 2. |
Disconnect the ETC module connector.
|
| 3. |
Measure resistance between the ETC module terminals 1 and 2.
|
| 4. |
Check that the resistance is within the specification.
|
Specification: 0.3 - 100 Ω [20°C (68 °F)]
|
|
| 1. |
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
|
| 2. |
Remove the air cleaner.
(Refer to Engine Mechanical System - “Air Cleaner”)
|
| 3. |
Disconnect the ETC module connector (A).
|
| 4. |
Remove the installation bolts, and then remove the ETC module (B) from
the engine.
|
Electronic throttle body mounting bolt:
7.8 - 9.8 N·m (0.8 - 1.0 kgf·m, 5.7 - 7.2 lb·ft)
|
|
| • |
Install the component to the specified torque.
|
| • |
Note that internal damage may occur if the component is dropped.
If the component has been dropped, inspect it before installation.
|
| • |
When cleaning the throttle body, clean the valve and carbon at
the bore with the cloth wet with the cleaner.
|
| • |
Do not spray the engine cleaner on the throttle body.
|
| • |
Be careful that fingers or cloth are not caught in the valve.
|
| • |
When installing the throttle body, make sure that foreign materials
do not enter the throttle body.
|
|
| 1. |
Install in the reverse order of removal.
|
| ETC module learning procedure |
Be sure to perform the ETC module learning procedure when replacing or re-installing
the ETC module.
| 1. |
Wait for one minute with the ignition switched "ON".
|
| 2. |
Start and keep the engine idle for 15 minutes.
|
| 3. |
Wait for one minute with the ignition switched "OFF".
|
| 4. |
Restart the engine, and check that the idle speed is stable.
|
If the ETC module learning procedure is not performed after replacing
or reinstalling the ETC module, MIL illumination with DTCs may occur.
|
|
| Auto Dection Reset Procedure |
|
After replacing the ETC module, the "ECM Auto Detection Reset" procedure
must be performed.
|
| 1. |
Switch "OFF" the ignition.
|
| 2. |
Connect the KDS/GDS to Data Link Connector (DLC).
|
| 3. |
Switch "ON" the ignition.
|
| 4. |
Select "Vehicle, Model year, Engine, System".
|
| 5. |
Select "Vehicle S/W Management".
|
| 6. |
Select "ECM Auto Detection Reset".
|
| 1. |
Remove the ETC module.
(Refer to Engine Control System - "ETC System")
|
| 2. |
Keep the ETC module plate (A) open.
|
| 3. |
Clean the pollutant in the throttle body with a soft cloth moistened
by cleaning fluid.
| •
|
Do not spray cleaning fluid directly onto ETC module.
Instead, use a lint-free cloth moistened by cleaning fluid.
|
| •
|
Be careful not to clean off the coating fluid around
the shaft. If coating fluid is removed, idling control failure
may occur from inflow of foreign substances or excessive
air leakage.
|
|
|
| 4. |
After cleaning, reinstall the ETC module and then perform the ETC module
learning procedure.
(Refer to Engine Control System - "ETC System" - Adjustment)
|
Circuit Diagram
Harness Connector
...
Fail-Safe Mode
Item
Fail-Safe
ETC Motor
Throttle valve stuck at 7°
TPS
TPS 1 fault
Replac ...
ETC (Electronic Throttle Control) System Schematic diagrams
ETC (Electronic Throttle Control) System Troubleshooting