Check VGT Control solenoid valve component resistance
IG KEY "OFF", ENGINE "OFF".
Disconnect VGT Control solenoid valve connector.
Measure he resistance between VGT Control solenoid valve component terminal 1 and 2.
Specification : 14.7 ~ 16.1Ω (20℃)
Is VGT Control solenoid valve component resistance within the specification?
YES
Go to "2.Check VGT Control solenoid valve operation" as follows.
NO
Replace VGT Control solenoid valve and go to "Verification of Vehicle Repair".
Check VGT Control solenoid valve operation
IG KEY "ON", ENGINE "ON".
Check that VGT Control solenoid valve operating duty is 75% after warming engine up.
Check if vacuum generates after disconnecting VGT valve vacuum hose.
Check if vacuum generates when decelerating after rapid acceleration (VGT Control solenoid valve operating duty 9.8%).
Specification : VGT Control solenoid valve duty 75% : vacuum generates
VGT Control solenoid valve duty 9.8% : vacuum does not generate
YES
Go to "Verification of Vehicle Repair".
NO
Replace VGT Control solenoid valve and go to "Verification of Vehicle Repair".
※ Repeat this process 2~3 times.