2.
Are related DTCs present?
▶ Do all repairs associated with those codes before proceeding with this procedure.
▶ Go to "System Inspection" procedure
The idle speed is controlled by the Electrical Throttle Control(ETC) System. ETC system is composed of the throttle motor to operate the throttle valve and the throttle position sensor to detect the opening angle of the throttle valve, the accelerator pedal position sensor to detect the accelerator pedal position and the one valve type throttle body. The PCM controls the throttle motor to provide the proper throttle valve opening angle for the target idle speed.
Checking idle RPM under detecting condition, if if the real idle speed is higher than desired idle speed by 200 RPM over 10 sec., PCM sets P0507. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.
Item | Detecting Condition | Possible cause | |
DTC Strategy | ● Monitor idle speed | ● Intake system for air leakage | |
Enable Conditions | ● Normal idle conditions | ||
Thresh old value | ● Real engine speed is higher than target engine speed by 200 RPM | ||
Diagnosis Time | ● Continuous | ||
MIL On Condition | ● 2 driving cycles | ||
Monitor DTCs related to HO2S, MAFS, MAPS, ECTS, PCSV, Injector, CVVT items, ETC system, A/C system, or power steering system with scantool.
Are related DTCs present?
▶ Do all repairs associated with those codes before proceeding with this procedure.
▶ Go to "System Inspection" procedure
Check intake/exhaust system for blockage
Visually/physically inspect the following items:
- Intake system for air leakage
- Vapor hoses for cracks or disconnection
Has a problem been found in any of the above areas?
▶ Repair it and go to "Verification of Vehicle Repair" procedure
▶ Clear DTC and Test-drive under enable conditions above-mentioned. After the test, If this DTC is set, go to "Inspection amp;amp; Repair" procedure. If not, troubleshooting is completed.
After a repair, it is essential to verify that the fault has been corrected.
Connect scantool and select "DTC" button.
Press "DTC Status" button and confirm that "DTC Readiness Flag" indicates "Completed". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions
Read "DTC Status" parameter
Is parameter displayed "History(Not Present) fault"?
▶ System performing to specification at this time. Clear the DTC
▶ Go to the applicable troubleshooting procedure.
