Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2014 Hyundai Veloster Base, Standard TransFACTORY OEM SERVICE PROCEDURE

Component Inspection

IG "OFF".
IG "ON".
Connect GDS and select "Diagnostic Trouble Codes (DTCs)" mode.
Using a GDS, Clear DTC.
Select "Diagnostic Trouble Codes (DTCs)" mode again.
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.
- Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NOTE:
  *In a case of replacing HECU, operate following functions
  1. "Steering Angle Sensor Calibration" for steering angle sensor offset correction (refer to C1261 ) - ESC only
  2. "Longitudinal Sensor Calibration" for Longitudinal sensor offset correction (refer to C1285 ) - ESC only
  3. "Variant Coding" for type recognition (refer to DTC C1702 ).
NO
- Fault is intermittent caused by poor connection in CAN signal harness and/or HECU's connector. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Factory Service Tools

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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.

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