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Home >> Kia >> 2021 >> Niro LX >> Repair and Diagnosis >> Brakes >> Traction Control >> ESC/AHB Diagnosis (HEV) (2 Of 2) >> DTC C1378-01: Pedal Signal Open/Short Error >> Component Inspection

Component Inspection

  1. Ignition "OFF".
  2. Shift lever position "P" & Ignition "ON"/"READY". ("READY lamp ON in Instrument cluster")
  3. Connect KDS and select "Diagnostic Trouble Codes (DTC)" mode.
  4. Using a KDS, Clear DTC.
  5. Operate the vehicle within DTC Detecting Condition in General Information.
  6. Select "Diagnostic Trouble Codes (DTC)" mode again.
  7. Is the same DTC stored in the system?

    Good 

    • 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 REPAIR " procedure.

    No Good 

    • Carefully re-do this troubleshooting guide steps.
    • If no problems were found with the circuits or connectors, replace the brake pedal module and go to "VERIFICATION OF REPAIR " procedure.

      * In case of replacing Brake pedal module, perform following "Vehicle S/W Management" procedures

CAUTION: In case of replacing Brake pedal module, perform following procedures.
Inspection Condition Inspection Procedure Reference
  1. Pedal Travel Sensor (PTS) Calibration.
  2. Ignition "ON".
  1. Connect KDS to Data Link Connector (DLC).
  2. Perform "Pedal Travel Sensor (PTS) Calibration" in "Vehicle S/W management" with KDS.
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G13458230Courtesy of KIA MOTORS AMERICA, INC.
G13458231Courtesy of KIA MOTORS AMERICA, INC.
G13458232Courtesy of KIA MOTORS AMERICA, INC.
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