General Description
When engine is idling, the ECM adjusts the throttle valve so that the engine runs at the correct idling speed, regardless of coolant temperature, load and etc. When the additional load applied in the engine, the air flow through the idle speed control actuator is increased momentarily to raise the idling speed.
DTC Description
The ECM monitors engine speed deviation from the target idle engine speed when the vehicle is stopped and the throttle valve opening is stable. The ECM sets DTC P0507 if the difference to the target idle engine speed is higher than the predetermined threshold.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | ? Monitoring high deviation between Target Idle Speed and Actual Engine Speed | ? A stuck or binding throttle body ? Air leakage ? Poor connection or damaged harness ? Faulty ETC system |
Enable Conditions | ? Coolant temp. >73°C(163°F) ? Idle speed controller active(idle status) ? 11< Battery voltage <16 ? After engine start >20 sec. ? No relevant failure |
Threshold Value | ? Engine Speed - Nominal Idle Speed > 200rpm |
Diagnostic Time | ? 21 sec. |