Hyundai i-30: Engine Control System / ETC (Electronic Throttle Control) System
Description and operation
The Electronic Throttle Control (ETC) System consists of a throttle body with
an integrated control motor and throttle position sensor (TPS). Instead of the
traditional throttle cable, an Accelerator Position Sensor (APS) is used to
receive driver input. The ECM uses the APS signal to calculate the target throttle
angle; the position of the throttle is then adjusted via ECM control of the
ETC motor. The TPS signal is used to provide feedback regarding throttle position
to the ECM. Using ETC, precise control over throttle position is possible; the
need for external cruise control modules/cables is eliminated.
Specifications
[Throttle Position Sensor (TPS)]
▷ Type : IC Rotate Sensor Type
▷ Specification
[ETC Motor]
Item
|
Specification
|
Coil Resistance (Ω)
|
1.29 - 1.57 [20°C (68°F)]
|
Troubleshooting
Item
|
Fail-Safe
|
ETC Motor
|
Throttle valve stuck at 9.2°
|
TPS
|
TPS1 fault
|
ECM looks at TPS2
|
TPS2 fault
|
ECM looks at TPS1
|
TPS 1, 2 fault
|
Throttle valve stuck at 9.2°
|
•
|
When throttle value is stuck at 9.2°, engine speed is limited
at below 1,200 - 1,700 rpm.
|
|
Schematic diagrams
Harness Connector
Repair procedures
Throttle Position Sensor (TPS)
1. |
Connect the diagnostic tool 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.
Specification : Refer to "Specification"
|
|
ETC Motor
1. |
Turn the ignition switch OFF.
|
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 : Refer to "Specification"
|
|
1. |
Turn the ignition switch OFF and disconnect the battery negative (-)
cable.
|
2. |
Disconnect the ETC Module Connector (A).
|
3. |
Remove the intercooler outlet hose.
(Refer to Engine Mechanical System - "Intercooler")
|
4. |
Remove the ETC module (A) after loosening the mounting bolts.
Tightening Torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)
|
|
•
|
Install the component with the specified torques.
|
•
|
Note that internal damage may occur when the component is dropped.
If the component has been dropped, inspect before installing.
|
|
1. |
Install in the reverse order of removal.
|
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
with cleaning fluid.
• |
Do not spray cleaning fluid directly onto ETC. Use a
lint free cloth moistened with cleaning fluid.
|
• |
Be careful not to clean the coating fluid around the
shaft. If coating fluid is removed, idling control failure
might occur by foreign substance inflow or excessive
air leakage.
|
|
|
4. |
After cleaning, re-install the ETC module and then perform the ETC module
learning procedure.
(Refer to Engine Control System - "ETC System" - Adjustment)
|
ETC Module Learning Procedure
Be sure to perform the ETC module learning procedure when replacing or re-installing
the ETC module.
1. |
Wait for 1 minute with the ignition switch ON.
|
2. |
Start the engine and hold the idle status for 15 minutes.
|
3. |
Waif for 1 minute with the ignition switch 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.
|
|
|
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Repair procedures
Replacement
•
Put on gloves to prevent hand injuries.
•
When removing with a flat-tip screwdriver or remover, wrap protective
tape around the tools to prevent damage to components...
Categories
(1) Driver’s door power window
switch
(2) Front passenger’s door power
window switch
(3) Rear door (right) power window
switch
(4) Rear door (left) power window
switch
(5) Window opening and closing
(6) Automatic power window
(7) Power window lock switch
read more