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Home >> Kia >> 2020 >> Optima EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 505 (4WD Control System Diagnosis) >> DTC U1121: Lost Communication With Electric Stability Program Module >> Wiring Inspection >> Basic Inspection >> Inspection Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

WARNING: This page is about a different car, the 2023 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check fuses and relays.
  2. Check battery terminals and charge status.
  3. Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

    Good 

    • Go to "next" procedure.

    No Good 

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