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1.

IG KEY "ON", ENGINE "ON".

2.

Connect scantool to Data Link Connector (DLC).

3.

Allow the engine to warm up to normal operating temperature.

4.

Electrical system and A/CON "OFF".

5.

Select "Air mass meter", "EGR actuator" and "Engine speed sensor" parameters on the scantool.

6.

Monitor "Air mass meter" data when "EGR actuator" is not operated (5.9 %) and "EGR actuator" is operated (Approx. 45~52 %).

A.

Specification

- "EGR actuator" is not operated (5.9 %) at idle : 460mg/st ± 20mg/st (790±50RPM)

- "EGR actuator" is operated (45~52 %) at idle : lower than EGR solenoid valve is not operated.

- EGR solenoid valve is operated for approx. 60 seconds after racing the accelerator pedal at warm up idle (Neutral, Load is not applied) and "EGR actuator" duty is to 5.9 % after 60 seconds.

B.

Case 1 : In case that "Air mass flow" data by operating EGR solenoid valve is normal

Go to "VGT inspection" procedure.

C.

Case 2 : In case that "Air mass meter" data is lower than 300 mg/st although "EGR actuator" data is 5.9 %.

Inspect EGR solenoid valve open stuck after checking intake hose leakage between MAFS and VGT.

For more detail inspection of intake system air leakage,

- Go to "Intake system leakage inspection" procedure.

For more detail inspection of EGR solenoid valve stuck

- Go to "EGR solenoid valve inspection" procedure.

D.

Case 3 : In case that "Air mass meter" data is above 300 mg/st although "EGR actuator" data is 42 ~ 45% (EGR solenoid valve is operated).

Inspect blocked EGR cooler or EGR solenoid valve open stuck after checking intake hose leakage between intake manifold and VGT (through intercooler)

(If there is EGR solenoid valve open stuck or intake system leakage or faulty MAFS, Current data could be different as above.)

For more detail inspection of intake system air leakage,

- Go to "Intake system leakage inspection" procedure.

For more detail inspection of EGR solenoid valve stuck,

- Go to "EGR solenoid valve component inspection" procedure.