Check motor coil resistance
IG KEY "OFF", ENGINE "OFF".
Disconnect variable swirl control actuator connector.
Measure the resistance between variable swirl control actuator component terminal 1 and terminal 2.
Specification : 15.0 ± 3 Ω (20℃)
Is the measured resistance within the specification?
YES
Go to "2. Check motor operation" as follows.
NO
Replace variable swirl control actuator assy’ and go to "Verification of Vehicle Repair".
Check motor operation
IG KEY "ON" , ENGINE "ON".
Keep engine at idle state.
Monitor the waveform of variable swirl control actuator terminal 1and terminal 2 with two channel oscilloscope.
Accelerating engine to above 3000RPM, let variable swirl control actuator be opened(operates).
Specification :
Does variable swirl control actuator operate correctly?
YES
Go to "Verification of Vehicle Repair".
NO
Replace variable swirl control actuator assy′ and go to "Verification of Vehicle Repair".