Toyota RAV4 (XA40) 2013-2018 Service Manual: Mass air flow meter

Mil circuit

Description The mil (malfunction indicator lamp) is used to indicate vehicle malfunction detections by the ecm. When the ignition switch is turned on, power is supplied to the mil circuit, and ...

On-vehicle inspection

Notice: Perform the maf meter inspection according to the procedures below. Only replace the maf meter when both the long ft#1 value and maf value in the data list (with the engine stopped ...

Other materials:

Road test
Inspect set switch Push the main switch on. Drive at a desired speed (40 km/h (25 mph) or higher). Inspect "+" switch Push the main switch button on. Drive at a desired speed (40 km/h (25 mph) or higher). Press the control switch to -/set. ...

Components
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Mass or volume air flow circuit
Description The mass air flow (maf) meter is a sensor that measures the amount of air flowing through the throttle valve. The ecm uses this information to determine the fuel injection time and to provide the appropriate air-fuel ratio. Inside the maf meter, there is a heated platinu ...