Scion 22204-0V010 Meter Sub-Assembly, Intake Air Flow

The Mass Airflow (MAF) sensor is located on the air filter housing above the throttle body and calculates the amount of air that is entering the engine. The ECM receives this voltage signal to in order to deduce the pulse width of the fuel injector and control the injectors. In the event that there is a problem with the signal in the MAF sensor circuit, a DTC will be set. First before performing the series of steps, the ignition key must be off or the power switch off and the cable must be disconnected with the negative terminal of the auxiliary 12-volt battery then the initialization process must be done upon reconnecting the cable. Thirdly release the electrical connector of the MAF sensor by pinching on the tab then uncrew and pull out the MAF sensor from the air filter housing. Subsequently, unscrew the two screws to eliminate the MAF sensor with O-ring from the casing. The process of installation is the reverse of removal so as to guarantee replacement of a new O-ring.