Airflow Meter Self-Cleaning Control

This system is designed to heat the "hot wire" of the airflow meter after ignition switch is turned to the "OFF" position. This is to clean any foreign matter that may have adhered to it during operation. After the engine has stopped, the ECU sends a signal to heat the "hot wire" to 1832°F (1000°C) to burn off any foreign material under the following conditions: if engine reached a certain predetermined RPM, vehicle speed reached a minimum MPH, coolant temperature was between two preset standards and only when engine is stopped by ignition key (not stalled).