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Home >> Kia >> 2019 >> Optima Plug-In Hybrid EX, 2.0L Eng VIN D >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transaxle Control System (PHEV) >> Engine Clutch Control Solenoid Valve (E-C VFS) >> Repair Procedures >> Removal
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Repair Procedures: Removal

WARNING:
  • Be sure to read and follow the "GENERAL SAFETY INFORMATION & CAUTION " before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
  • Be sure to shut off the high voltage circuit according to the "HIGH VOLTAGE SHUT-OFF PROCEDURES " before doing any work related with the high voltage system to avoid serious electrical injuries.
NOTE:
  • If DTC P1744 (engine clutch malfunction) and solenoid valve DTCs are indicated at the same time, replace the transaxle assembly.
  • Maintain clean condition so that foreign substance does not get into the automatic transaxle.
  • Use a coated apron, latex gloves, and stainless tray to prevent foreign substance from getting into the transaxle.
  1. Shut off the high voltage circuit.

    (Refer to Automatic Transaxle System - "HIGH VOLTAGE SHUT-OFF PROCEDURE ")

  2. Remove the under cover.

    (Refer to Engine Mechanical System - "ENGINE ROOM UNDER COVER ")

  3. Remove the ATF drain plug (A), allow the fluid to drain out and then reinstall the drain plug.

    Tightening torque 

    33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb.ft)

    G13155987Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • The existing ATF drain plug gasket must be replaced with a new one. (Do not reuse it.)
    • ATF can be reused. Collect it in a clean beaker.
  4. Drain the coolant of engine & transaxle cooling system.

    (Refer to Engine Mechanical System - "COOLANT ")

  5. Drain the coolant of hybrid motor cooling system.

    (Refer to Hybrid Motor System - "COOLANT ")

  6. Remove the air cleaner assembly and air duct.

    (Refer to Engine Mechanical System - "AIR CLEANER ")

  7. Remove the hybrid power control unit (HPCU) assembly.

    (Refer to Hybrid Control System - "HYBRID POWER CONTROL UNIT ")

  8. Remove the HPCU tray (A).

    Tightening torque: 

    19.6 - 29.4 N.m (2.0 - 3.0 kgf.m, 14.5 - 21.7 lb.ft)

    G13155988Courtesy of KIA MOTORS AMERICA, INC.
  9. Disconnect the coolant hose (A).
    G13155989Courtesy of KIA MOTORS AMERICA, INC.
  10. Disconnect the ATF cooler hose (A) and remove the ATF cooler pipe (C) by loosening the bolts (B, D).

    Tightening torque: 

    (B) 41.2 - 47.1 N.m (4.2 - 4.8 kgf.m, 30.4 - 34.7 lb.ft)

    (D) 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

    G13155990Courtesy of KIA MOTORS AMERICA, INC.
  11. Disconnect the breather hose (B) after removing the clamp (A).
    G13155991Courtesy of KIA MOTORS AMERICA, INC.
  12. Remove the valve body cover (A) by loosening the bolts.

    Tightening torque: 

    11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb.ft)

    G13155992Courtesy of KIA MOTORS AMERICA, INC.
  13. Remove the main harness (C) and oil temperature sensor (B) after loosening the bolts (A).

    Tightening torque: 

    9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

    G13155993Courtesy of KIA MOTORS AMERICA, INC.
  14. Remove the solenoid valve support bracket (A).

    Tightening torque: 

    9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

    G13155994Courtesy of KIA MOTORS AMERICA, INC.
  15. Loosen the valve body mounting bolt (A).

    Tightening torque: 

    9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

    G13155995Courtesy of KIA MOTORS AMERICA, INC.
  16. Remove the engine clutch control solenoid valve (A).
    G13155996Courtesy of KIA MOTORS AMERICA, INC.
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