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Home >> Kia >> 2012 >> Optima LX, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 51 (Cluster Module Diagnosis - HEV) >> DTC B1602: CAN Error >> Inspection Repair >> 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: Body Control Module And Cluster - Circuit Diagram
    G08314452Courtesy of KIA MOTORS AMERICA, INC.
    Fig 2: Identifying Body Control Module And Cluster Connector Terminals End View
    G08314453Courtesy of KIA MOTORS AMERICA, INC.

    *CAN communication units: BCM(Body Control Module), CLU(Cluster), SMK(Smart Key), SJB(Smart Junction Box), PSM (Power Seat Module).

  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.