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 C1604 present?
YES
Go to "Inspection/Repair" procedure
NO
Fault is intermittent. Check if headlamp moves properly as actuator is generated andgo to "Verification Vehicle Repair" procedure.