Monitor DTC Status
Head Lamp
Automatic Headlamp Leveling System - C1604 ECU Hardware Error Monitor Scantool data
Monitor Scantool Data
1. Connect scantool to Data Link Connector (DLC).
2. Engine "ON" and Head lamp"ON"
3. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode and Read "DTC Status" parameter
Fig.1) C1604 DTC
4. Is the DTC C1604 present?