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1.

Select "Engine test function" on the scantool and execute "Idle Speed Comparison".

2.

The RPM variation of cylinders is normal?

▶ Go to "Fuel" inspection procedure.

▶ Go to "Fuel delivery system" inspection procedure.

▶ Go to "APS" inspection procedure.

▶ Check/repair the engine timing chain and timing alignment.

▶ Go to "Engine hesitating cylinder differentiation" procedure as below.

3.

Execute "Injection quantity comparison" on the scantool.

4.

Does "Fuel Adaption(㎣)" data of certain cylinder display extreme correction value(-6/+6)?

→ Change the injector location from problematic cylinder to normal cylinder.

▶ If "-6/+6" is displayed continuously in the cylinder to install the problematic injector, check/repair the injector.

▶ If "-6/+6" is displayed continuously regardless of the injector location exchange, go to "Compression pressure" inspection procedure.

▶ If the injection quantity data is displayed within "±4", reuse the Injector.