Check the MAFS visually.
Mounting direction
Any contamination, corrosion or damage on connector
Clogged or wet air cleaner
Deformed or blocked by any foreign material on MAFS' cylinder
Check any leakage on intake system and intercooler system.
Turn the ignition switch OFF and disconnect the battery (-) cable.
Disconnect the mass air flow sensor connector (A) and the installation clamp (B).
Remove the mass air flow sensor after removing the installation bolts.
Install the component with the specified torques.
Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.
Be careful not to damage the sensing element and the honey cell.
Installation is reverse of removal.
Mass air flow sensor installation bolt:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)
Mass air flow sensor clamp installation screw:
2.9 ~ 4.9 N.m (0.3 ~ 0.5 kgf.m, 2.2 ~ 3.6 lb-ft)
After replacing the Mass Air Flow Sensor (MAFS), MUST perform the "Component Change Routine" procedure. Otherwise trouble related with engine performance or emission control may occur until ECM learning about the component is over.
Turn ignition switch OFF.
Connect the GDS to Data Link Connector (DLC).
Turn ignition switch ON.
Select "Vehicle, Model year, Engine, System".
Select "Vehicle S/W Management".
Select "Component Change Routine".
Select "Air Flow Sensor Change".
Perform the procedure in accordance with the message.