Component Inspection

C1604 ECU Hardware Error

Inspection/Repair - Component Inspection

Component Inspection

1. Ignition "OFF" & Engine "OFF".
2. Ignition "ON" & Engine "OFF".
3. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode.
4. Using a scantool, Clear DTC.
5. Select "Diagnostic Trouble Codes (DTCs)" mode again.
6. Are any DTCs present?