Connect Vehicle Diagnostic Interface Or The OBD-II General Scan Tool & Read Data

Turn the ignition switch to OFF.

Connect the Vehicle Diagnostic Interface or OBD-II general scan tool to data link connector.

Turn the ignition switch to ON and Vehicle Diagnostic Interface or OBD-II general scan tool switch to ON.

Start the engine.

Read the mass air flow sensor voltage using Vehicle Diagnostic Interface or OBD-II general scan tool.

NOTE:

Vehicle Diagnostic Interface
For detailed operation procedure, refer to the "READ CURRENT DATA FOR ENGINE ".
OBD-II general scan tool
For detailed operation procedures, refer to the OBD-II General Scan Tool Instruction Manual.

Is the measured value within 0.2 to 4.7 V?

YES

Even if malfunction indicator light lights up, the circuit has returned to a normal condition at this time.