2021 Genesis G90 3.3T Premium, AWDFACTORY OEM SERVICE PROCEDURE

Repair Procedures: Inspection

If idle rpm is unstable or engine stops, check the ETC module operation with GDS diagnostic tool.

And if necessary, clean carbon in the throttle body.

  1. Connect the GDS to the Data Link Connector (DLC).
  2. Select "Vehicle S/W management" β†’ "Inspection/Test" β†’ "ETC Performance Test" on the GDS menu.
  3. Perform "ETC module test" procedure in accordance with the message.
    G14233084Courtesy of HYUNDAI MOTOR AMERICA
  4. If the test result of the ETC module or TPS signal shows NG, perform ETC module cleaning.
G14233085Courtesy of HYUNDAI MOTOR AMERICA
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:

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

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