Hyundai Genesis: Engine Control System / ETC (Electronic Throttle Control) System Repair procedures

Hyundai Genesis (DH) 2013-2016 Service Manual / Engine Control / Fuel System / Engine Control System / ETC (Electronic Throttle Control) System Repair procedures

If idle rpm is unstable or engine stops, check the ETC module operation with GDS diagnostic tool.
And if necessary, clean carbon in the throttle body.
Connect the GDS to the Data Link Connector (DLC).
Select "Vehicle S/W management" > "Inspection / Test" > "ETC Performance Test" on the GDS menu.
Perform "ETC module test" procedure in accordance with the message.

If the test result of the ETC module or TPS signal shows NG, perform ETC module cleaning.

Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Remove the air intake hose.
(Refer to Engine Mechanical System - "Intake AndExhaust System")
Disconnect the ETC module connector (A).

Disconnect the coolant hose (A).

Remove the ETC module (B) from the engine after loosening the installation bolt (A).

Remove the ETC module.
(Refer to Engine Control System - "ETC Module".)
Keep the opening position of the ETC module plate with the fixing jig.

Clean the contamination part of the throttle body with a soft and lint-free cloth dampened with cleanser to prevent foreign objects from going in.

Do not spray a cleanser directly to ETC module.
Use a soft and lint-free cloth to clean carbon.
Be careful not to wipe out coating (A) around the shaft.
If the coating is removed, poor idling control can be caused by excessive air leakage or foreign materials in the bearing of the shaft.

After cleaning it, re-install the ETC module and perform ETC module learning procedure.
(Refer to Engine Control System - "ETC Module Adjustment".)
Install the component with the specified torques.
Note that internal damage may occur if the component drops. If the component drops, 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.
To install, reverse the removal procedure.

Electronic throttle body Installation bolt:
7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)

ETC module learning procedure
When replacing new ETC module or re-installing it, ETC module learning procedure must be performed.
Hold the ignition key or the start button at the IG ON position for 1 minute.
After starting the engine, keep the idle state for 15 minutes.
Turn the ignition key or the start button off and hold for 1 minute.
Re-start the engine and check the idle roughness.
Related DTC codes might be displayed if ETC module learning procedure is not performed after replacing ETC module.
ETC (Electronic Throttle Control) System Schematic Diagrams
Circuit Diagram ...

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