Da ,corect are MTIA dar la fel se poate vedea pierderea de vacum prin procentajul de deschidere/inchidere al clapetei.
If the idle is too high, stop the engine. Fully extend the main throttle idle actuator (MTIA) with a IAC driver. Start the engine. If the idle speed is above 800 rpm, locate and repair the vacuum leak. Also, check for a binding throttle plate or throttle linkage or an incorrect base idle setting