P0223

Component Location






General Description

The Electronic Throttle Control(ETC) system is made of the components throttle body, Throttle Position Sensor(TPS)1&2 and Accelerator Position Sensor(APS) 1&2. TPS1&2 are sharing the same source voltage and ground. The throttle valve opening is control by throttle motor which is controlled by Engine Control Module(ECM). The opposite position indicator shows inverted signal characteristics. TPS1 output voltage increases smoothly in proportion with the throttle valve opening angle after starting. TPS2 output voltage decreases in inverse proportion with the throttle valve opening angle after starting. TPS provides feedback to the ECM to control the throttle motor in order to control the throttle valve opening angle properly in response to the driving condition.

DTC Description

ECM sets DTC P0223 if the ECM detects signal voltage higher than the possible range of a properly operating TPS2.

DTC Detecting Condition






Diagnostic Circuit Diagram






Monitor DTC Status

1. Connect GDS and select "DTC Analysis" mode
2. Click "DTC Status" on the menu bar to see DTC's information.
3. Confirm that "DTC Readiness Flag" indicates "COMPLETED". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
4. Read "DTC Status" parameter.






5. Is parameter displayed "History(Not Present) fault"?

NOTE:
- History (Not Present) fault : DTC occurred but has been cleared.
- Present fault : DTC is occurring at present time.






Terminal and connection inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Ground Circuit Inspection

Check for Open in Ground Circuit
1. IG KEY OFF.
2. Disconnect ETC connector and ECM connector.
3. Measure resistance between both ends of TPS ground line.

Specification :Below 1Ohms.

4. Is resistance within specification?






Signal Circuit Inspection

Check for Short to Power in Signal Circuit
1. IG KEY OFF.
2. Disconnect ETC connector.
3. IG KEY ON.
4. Measure voltage between TPS1 signal terminal of ETC harness connector and chassis ground.

Specification :Approx. 0 V

5. Is voltage within specification?






Component Inspection

1. Select 'Actuation Test' mode and execute 'ETC motor' item.






> During 'ETC Motor' test, TPS1 and TPS2 show symmetrical movements.
2. Is the waveform normal?






NOTE:
It is necessary to perform the TPS adaptation procedure after the ETC assembly or ECM replacing.
TPS adaptation procedure
Ignition "OFF" and then "ON" without cranking. Wait for 10 seconds under enable conditions.
-> Enable conditions : Battery >10V & Intake Air Temp. >5.3°C(41.5°F) & 5.3°C(41.5°F) < Engine Coolant Temp. < 99.8°C(211.6°F)

Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.
1. Connect GDS and select "DTC Analysis" mode.
2. Click "DTC Status" and confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
3. Read "DTC Status" parameter.
4. Is parameter displayed "History(Not Present) fault"?