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 ECM 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 15 sec., ECM sets P0507.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Monitor idle speed | 1. Intake system for blockage | |
Enable Conditions |
•
Vehicle speed = 0
•
Coolant temperature > 70℃ (158℉)
•
Intake air temperature > -7.5℃ (18.5℉)
•
Accel. Pedal = 0% | ||
Threshold value | Case 1 |
•
Desired engine speed – Atucal engine speed < -200rpm or max. Idle torque – Actual Idle torque < 100Nm | |
Case 2 |
•
Fuel cut-off ≥ 3 times | ||
Diagnostic Time |
•
15sec | ||
MIL ON Condition |
•
3 driving cycle | ||
