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Home >> Kia >> 2020 >> Optima SX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 31 (Dual Clutch Transmission Diagnosis - 1.6L (2 Of 2) (Except HEV)) >> DTC P0921-77: Gear 1 System Referencing Failure >> Component Inspection >> Notes

Component Inspection: Notes

WARNING: This page is about a different variant/trim than selected.
  1. Ignition "OFF"
  2. Connect KDS to Data Link Connector (DLC).
  3. Ignition "ON"
  4. Perform "Engage Odd Gear (1st Gear)" in "Actuation Test" with KDS.
  5. Monitor "Shift Motor 1 Position (Odd Gear Shaft)" in "Current Data" with KDS.

    Specification:  Refer to Figure below

    G12937232Courtesy of KIA MOTORS AMERICA, INC.
  6. Perform "Lug Alignment" in "Actuation Test" with KDS.

    Specification:  Check for operation sound

    G12937233Courtesy of KIA MOTORS AMERICA, INC.
  7. Perform "Gear Actuator Reference Check" in "Actuation Test" with KDS.

    Specification:  Check for operation sound

    G12937234Courtesy of KIA MOTORS AMERICA, INC.
  8. Is displayed parameter within specification?

    YES 

    • 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 VEHICLE REPAIR " procedure.

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If problem still occurs, repair or replace Gear Shift assembly and then go to "VERIFICATION OF VEHICLE REPAIR " procedure. (Perform "DCT Learning" in "Vehicle S/W Management" with KDS.)
    • Replace "DCT" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure. (Perform "DCT Manual Input Function (Transmission Exchange)" in "Vehicle S/W Management" with KDS.)