Test NF-12A - Checking Minimum Idle Airflow

Start engine, and let it idle. Allow engine to reach normal operating temperature. Turn all accessories off. Using DRB-II, actuate minimum airflow. If engine speed is not 625-725 RPM, replace throttle body. Perform VERIFICATION PROCEDURE VER-3. If engine speed is 625-725 RPM, perform TEST NF-13A.