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Home >> Kia >> 2020 >> Optima SX >> Repair and Diagnosis >> External Pages >> Different car >> Section 254 (Dual Clutch Transmission Diagnosis (2 Of 2) - 1.6L) >> DTC P090B-78: Clutch 2 System Reference Position Failure >> Component Inspection >> Notes

Component Inspection: Notes

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect GDS to Data Link Connector (DLC).
  2. Lift vehicle with suitable lift and Engine "ON".
  3. Perform "Lug Alignment", "Gear Actuator Reference Check" in "Actuation Test" with GDS.

    Specification:  Check for operation sound

    G12602094Courtesy of HYUNDAI MOTOR AMERICA
    G12602095Courtesy of HYUNDAI MOTOR AMERICA
  4. Is the measured value 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 the relevant component(s) as necessary, and go to "VERIFICATION OF VEHICLE REPAIR ".

    NO 

    • If problem still occurs, repair or replace Gear select assembly and then go to "VERIFICATION OF VEHICLE REPAIR " procedure. (Perform "DCT Learning" in "Vehicle S/W Management" with GDS.)
    • Replace "DCT" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure. (Perform "DCT Manual Input Function (Transmission Exchange)" in "Vehicle S/W Management" with GDS.)