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Home >> Kia >> 2020 >> Optima LX >> Repair and Diagnosis >> External Pages >> Different car >> Section 418 (Double Clutch Transmission Diagnosis - 1.6L (4 Of 4)) >> DTC U0121-87: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> Component Inspection

Component Inspection

WARNING: This page is about a different car, the 2022 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
Inspection Condition Inspection Procedure Reference
  1. Ignition "ON".
  1. Ignition "OFF".
  2. Connect KDS to "Data Link Connector (DLC)".
  3. Ignition "ON".
  4. Monitor "Diagnostic Trouble Codes (DTC)" with KDS.
  5. Clear any DTCs stored in the system with KDS.
  6. Re-check DTC in the system with KDS.
  7. Did the same DTC is stored in the system?
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Good 

No Good