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Home >> Kia >> 2019 >> Optima S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 256 (Driver Door Module Diagnosis (PHEV)) >> DTC B1602-00: CAN Error >> Component Inspection >> Check internal errors of CAN communication units

Check internal errors of CAN communication units

WARNING: This page is about a different variant/trim than selected.
  1. Connect KDS.
  2. Ignition "ON", Engine "OFF".
  3. Select "Diagnostic Trouble Codes (DTC)" mode.
  4. Disconnect CAN communication units one by one and monitor DTC to find the cause.
  5. Is the DTC 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 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 REPAIR " procedure.