Ignition "OFF"

Remove ICA from Throttle body and Check for throttle bore, throttle plate and the ICA passages for chocking and for any foreign objects. Repair or clean as necessary

Ignition "ON" & Engine "OFF".

Connect scan tool and select "IDLE SPEED ACTUATOR" parameter on the "ACTUATION TEST" mode.

Activates ICA by pressing "STAT" key

Check the ICA for clicking sound and visually verifying valve closes and opens

Is ICA OK?

YES

▶ Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure

NO

▶ Check ICA valve for contamination, deterioration, or damage. Substitute with a known-good ICA valve and check for proper operation. If the problem is corrected, replace ICA valve and then go to "Verification of Vehicle Repair" procedure