Engine Controls - Hard Start/DTC P2110/P2118/P2119

GROUP FUEL

NUMBER 018

MODEL RONDO[UN], FORTE[TD], OPTIMA[MG], SORENTO[XM]

DATE MARCH 2010

SUBJECT:
THETA-2.0/2.4L ELECTRONIC THROTTLE BODY CLEANING PROCEDURE

This bulletin provides information on how to clean carbon deposits and/or residues from fuel additives accumulated in Electronic Throttle Control (ETC) assemblies on Theta-2.0L/2.4L engine equipped vehicles. Dirty throttle bodies can cause a variety of concerns and may result in MIL illumination as described below. Although ECU may compensate for changes in air flow with fuel trim adaptive logic adjustments, DTC's may illuminate over time. Follow the instructions should the symptoms below arise.

NOTICE:
^ Symptoms below can occur from carbon deposits and/or fuel additives accumulated over time in throttle body. ETC assembly should not be replaced for contamination. Any deposits need to be cleaned off following the instruction in this TSB.





Symptoms that may occur due to carbon deposits build up inside the ETC:

^ Hard/Impossible engine start (Throttle valve stuck closed)

^ DTC P2110, P2118 or P2119 stored in ECM (Throttle valve stuck closed)





1. Remove the breather hose (A) and the air intake hose (B), to gain access to the ETC assembly.





2. Disconnect the ETC connector (C).

CAUTION
Keep fingers and hands away from throttle body unless connector is disconnected.





3. Remove the (4) ETC mounting bolts as indicated and ETC from the intake manifold.

CAUTION
It's not necessary to disconnect the coolant hose from the ETC completely for this particular repair.





4. Spray throttle plate cleaner onto the throttle valve and bore areas and wipe off the carbon deposits with a rag or shop towel as shown in the photos.

CAUTION
Be cautious while trying to open throttle plate and avoid making any scratches to the throttle valve and bore areas during cleaning .





5. After ETC cleaning procedure is complete; reinstall all the removed parts in reverse order of removal.

Tightening torque for ETC mounting bolts:

Theta I 2.4L: 5.8-7.2 ft. lbs. (7.8-9.8 Nm)

Theta II 2.0L/2.4L: 7.2-8.7 ft lbs. (9.8-11.8 Nm)

NOTICE
If the ETC gasket has been damaged or contaminated by foreign substances, be sure to replace it with new one.

6. Erase all the DTC's in Engine System with use of GDS.

7. Reset the learned ETC Throttle Valve Position in Engine System with use of GDS by going to "System Option".

8. Turn the ignition key to ON position for 2 seconds and OFF for 5 seconds (Do not start the engine) to allow the ECM to automatically perform the throttle valve position learning operation.

NOTICE
The following parameters should be met for proper throttle position relearning: Battery > 10V and Engine coolant temperature > 41.5°F (5.3°C).





AFFECTED VEHICLE RANGE

REQUIRED PARTS:

NONE.

REQUIRED SST:

NONE.





WARRANTY CLAIM INFORMATION