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Home >> Kia >> 2015 >> Rio EX, 4D Hatchback >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System/Electronic Stability Control Diagnosis >> DTC C1688: MDPS Signal Error >> Component Inspection

Component Inspection

  1. IG "OFF".
  2. IG "ON".
  3. Connect GDS and select "Diagnostic Trouble Codes(DTCs)" mode.
  4. Using a GDS, Clear DTC.
  5. Select "Diagnostic Trouble Codes(DTCs)" mode again.
  6. Are any DTCs present?

    YES 

    Substitute with a known-good EPS ECU and check for proper operation.

    If the problem is corrected, replace EPS ECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    In a case of replacing the EPS ECU, operate "Steering Angle Sensor Calibration" by GDS in EPS system.

    NO 

    Fault is intermittent caused by poor connection in CAN signal harness and/or HECU's connector. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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