General Description
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.
DTC Description
Checking idle RPM under detecting condition, if if the real idle speed is lower than desired idle speed by 100 RPM over 10 sec., ECM sets P0506.
DTC Detecting Condition
Item | Detecting Condition | Possible cause |
DTC Strategy | Monitor idle speed
| Intake system for blockage |
Enable Conditions | Vehicle speed = 0
Coolant temperature > 50? (122?)
Intake air temperature > -7.5? (18.5?)
Accel. Pedal = 0%
|
Threshold value | Desired engine speed – Atucal engine speed > 100rpm or max. Idle torque – Actual Idle torque < 100Nm
|
Diagnosis Time | 8 sec
|
MIL On Condition | 2 driving cycles
|