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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 109 (Cluster Module Diagnosis (HEV)) >> DTC B1602: CAN Error >> Component Inspection

Component Inspection

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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: BCM And CLU Communication Diagram & Connector End Views
    G10602869Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Identifying SMK, PCM, BCM, And EBS Connector End Views
    G10602870Courtesy of HYUNDAI MOTOR AMERICA

    *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.