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:

Check for intermittent problems
Hint: Inspect the vehicle's ecm using check mode. Intermittent problems are easier to detect with the intelligent tester when the ecm is in check mode. In check mode, the ecm uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detec ...

Removal
Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove generator assembly Remove the generator assembly from the vehicl ...

Components
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