4.
Select "ENGINE CONTROL".
MAFS uses a hot-film type sensing element to measure the mass of intake air entering the engine, and send the signal to ECM.
A large amount of intake air represents acceleration or high load conditions while a small amount of intake air represents deceleration or idle.
The ECM uses this information to control the EGR solenoid valve and correct the fuel amount.
Check the MAFS visually.
Mounting direction correct.
Any contamination, corrosion or damage on connector.
Air cleaner's clogging or wet.
MAFS cylinder's deforming or blocking by any foreign material.
Check any leakage on intake system and intercooler system.
After replacing a Mass Air Flow Sensor (MAFS) or Intake Air Temperature Sensor (IATS)#1, MUST proceed below procedure.
Turn ignition switch OFF.
Connect a scan tool to Data Link Connector (DLC).
Turn ignition switch ON.
Select "ENGINE CONTROL".
Select "MANUAL SELECTION MODE".
Select "D 2.0L VGT DIESEL".
Select "COMPONET CHANGE ROUTNE"
Select "AIR FLOW SENSOR CHANGE".
Press "ENTER" key.
Wait 10 seconds with IG ON.
Turn ignition switch off.
