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: Body Control Module And Smart Junction Box Circuit Diagram

   Courtesy of HYUNDAI MOTOR AMERICA

   * CAN communication units: BCM (Body Control Module), CLU (Cluster), 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.