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HOMESERVICE MANUALSKIA2020SOUL LX, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTI-LOCK BRAKESABS/ESC DIAGNOSISDTC C1604-04: ECU HARDWARE ERRORCOMPONENT INSPECTIONINSPECTION PROCEDURE
2020 Kia Soul LX, Standard Trans

Inspection Procedure

2020 Kia Soul LX, Standard TransSECTION Inspection Procedure
  1. Ignition "OFF".
  2. Connect KDS to "Data Link connector (DLC)".
  3. Ignition "ON".
  4. Select "Diagnostic Trouble Codes (DTCs)" mode.
  5. Using a KDS, Clear DTC.
  6. Operate the vehicle within DTC Detecting Condition in General Information.
  7. Select "Diagnostic Trouble Codes (DTCs)" mode again.
  8. 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 ESC and go to "Verification of Repair " procedure.

    * In case of replacing ESC, perform following "Vehicle S/W Management" procedures

CAUTION: In case of replacing ESC, perform following procedures.
Inspection Condition Inspection Procedure Reference
  1. Auto Detected Configuration Reset (ESP (ESC) Only).
  2. Ignition "ON".
  1. Connect KDS to "Data Link connector (DLC)".
  2. Perform "Auto Detected Configuration Reset (ESP(ESC) Only)" in "Vehicle S/W management" with KDS.
 Fig.1 to 4
G13116473Courtesy of KIA MOTORS AMERICA, INC.
G13116474Courtesy of KIA MOTORS AMERICA, INC.
G13116475Courtesy of KIA MOTORS AMERICA, INC.
G13116476Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition Inspection Procedure Reference
  1. Variant Coding.
  2. Ignition "ON".
  1. Connect KDS to "Data Link connector (DLC)".
  2. Perform "Variant Coding" in "Vehicle S/W management" with KDS.
 Fig.1 to 6
G13116477Courtesy of KIA MOTORS AMERICA, INC.
G13116478Courtesy of KIA MOTORS AMERICA, INC.
G13285716Courtesy of KIA MOTORS AMERICA, INC.
G13285717Courtesy of KIA MOTORS AMERICA, INC.
G13285718Courtesy of KIA MOTORS AMERICA, INC.
G13285719Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition Inspection Procedure Reference
  1. Longitudinal G-sensor Calibration (HAC/DBC Only).
  2. Ignition "ON".
  1. Connect KDS to "Data Link connector (DLC)".
  2. Perform "Longitudinal G-sensor Calibration (HAC/DBC Only)" in "Vehicle S/W management" with KDS.
 Fig.1 to 5
G13285720Courtesy of KIA MOTORS AMERICA, INC.
G13285721Courtesy of KIA MOTORS AMERICA, INC.
G13285722Courtesy of KIA MOTORS AMERICA, INC.
G13285723Courtesy of KIA MOTORS AMERICA, INC.
G13285724Courtesy of KIA MOTORS AMERICA, INC.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.