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Home >> Kia >> 2020 >> Optima SX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 31 (Dual Clutch Transmission Diagnosis - 1.6L (2 Of 2) (Except HEV)) >> DTC U0100-87: Lost Communication With ECM/PCM >> Component Inspection

Component Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Ignition "OFF"
  2. Ignition "ON"
  3. Connect KDS to Data Link Connector (DLC).
  4. Check for "Diagnostic Trouble Codes (DTC)" with KDS.
  5. Clear all DTCs in the system with KDS.
  6. Operate system within enable condition mention in DTC Detection Condition.
  7. Re-check DTC in the system with KDS.
  8. Are any DTCs stored in the system?

    YES 

    • Carefully re-do this troubleshooting guide steps.
    • If problem still occurs, replace ECM/PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
    • Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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