STEP 1. Check the variable valve lift control motor.
STEP 2. Check of open circuit and harness damage in VLMV line between variable valve lift control motor connector and valve lift ECU connector.
STEP 3. Check of open circuit and harness damage in VLMU line between variable valve lift control motor connector and valve lift ECU connector.
STEP 4. Check of open circuit and harness damage in VLMW line between variable valve lift control motor connector and valve lift ECU connector.
STEP 5. Check the trouble symptoms.
STEP 6. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 23 . (2) Check the diagnostic trouble code (DTC).
Is DTC P2648 stored?
Retry the troubleshooting. The inspection is complete.