Connect scantool to Data Link Connector(DLC).
Engine "ON" and Head lamp"ON"
Connect scantool and selet "Diagnostic Trouble Codes(DTCs)" mode and Read "DTC Status" parameter

Is the DTC C2226 present?
YES
Go to "Inspection/Repair" procedure
NO
Check the current data after restarting the engine and go to "Verification Vehicle Repair" procedure.