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Home >> Kia >> 2020 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle Control System (PHEV) >> Output Speed Sensor >> 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 SHUTOFF PROCEDURE " before doing any work related with the high voltage system to avoid serious electrical injuries.
  1. Shift the gear to "N".
  2. Shut off the high voltage circuit.

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

  3. Remove the under cover.

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

  4. 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)

    G13361958Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: The existing ATF drain plug gasket must be replaced with a new one. (Do not reuse it.)
  5. Drain the coolant of engine & transaxle cooling system.

    (Refer to Engine Mechanical System - "COOLANT ")

  6. Drain the coolant of hybrid motor cooling system.

    (Refer to Hybrid Motor System - "COOLANT ")

  7. Remove the air cleaner assembly and air duct.

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

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

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

  9. Separate the cooler hose (A).
    G13361959Courtesy of KIA MOTORS AMERICA, INC.
  10. Separate the ATF cooler hose (A) and remove the ATF cooler pipe (C) loosening the eyebolts (B).

    Tightening torque: 

    42.2 - 48.1 N.m (4.3 - 4.9 kgf.m, 31.1 - 35.4 lb.ft)

    G13361960Courtesy of KIA MOTORS AMERICA, INC.
  11. Separate the breather hose (B) after removing the clamp (A).
    G13361961Courtesy of KIA MOTORS AMERICA, INC.
  12. Remove the valve body cover (A) loosening the bolts.

    Tightening torque: 

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

    G13361962Courtesy 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)

    G13361963Courtesy of KIA MOTORS AMERICA, INC.
  14. Remove the valve body assembly (B) loosening the bolts (A).

    Tightening torque: 

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

    G13361964Courtesy of KIA MOTORS AMERICA, INC.
  15. Disconnect the input & output speed sensor connector (A).
  16. Remove the input & output speed sensor (B) after loosening the bolts.

    Tightening torque: 

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

    G13361965Courtesy of KIA MOTORS AMERICA, INC.