Component Inspection

P0507 Idle Air Control System-RPM Higher than Expected

Inspection/Repair - Component Inspection

Component Inspection

ISCA Inspection
1. Ignition "OFF".
2. Remove ISCA from Throttle body and Check for throttle bore, throttle plate and the ISCA passages for chocking and for any foreign objects. Repair or clean as necessary.
3. Ignition "ON" & Engine "OFF".
4. Connect GDS and select "IDLE SPEED ACTUATOR" parameter on the "ACTUATION TEST" mode.
5. Activates ISCA by pressing "STAT" key.
6. Check the ISCA for clicking sound and visually verifying valve closes and opens.

NOTE:
Repeat numerous times to ensure valve reliability.

7. Is ISCA Valve moving freely and not carbon fouled?