Component Inspection

Check internal errors of CAN communication units
1. Connect GDS.
2. IG "ON" and engine "OFF".
3. Select "DTC Analysis" mode.
4. Disconnect CAN communication units one by one and monitor DTC to find the cause.
  
  Fig 1: CAN Communication Circuit Diagram
  Courtesy of HYUNDAI MOTOR CO.
  
  *CAN communication units: BCM (Body Control Module), CLU (Cluster), PDM (Power Distribution Module), SMK (Smart Key), SJB (Smart Junction Box).
5. Is the code erased?
  YES
  - Substitute with a known - good unit and check for proper operation.
    If the problem is corrected, replace the unit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.