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Home >> Kia >> 2015 >> Optima Hybrid >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transaxle Control System - Optima HEV >> Transaxle Control Module (TCM) >> Repair procedures >> Removal
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Repair procedures: Removal

WARNING:
  • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries. Refer to GENERAL SAFETY INFORMATION AND CAUTION .
  • 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. Refer to HIGH VOLTAGE SHUT-OFF PROCEDURE .
  1. Disconnect the 12V battery negative (-) cable.
  2. Remove the air duct (A).

    Tightening torque: 

    7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

    Fig 1: Air Duct
    G08312309Courtesy of KIA MOTORS AMERICA, INC.
  3. Remove the air cleaner assembly.
    1. Disconnect the breather hose (A).
    2. Disconnect the air intake hose (B) and then remove the air cleaner assembly (C).

      Tightening torque: 

      Hose clamp bolt:

      2.9 ~ 4.9 N.m (0.3 ~ 0.5 kgf.m, 2.2 ~ 3.6 lb-ft)

      Air cleaner assembly bolts:

      7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

    Fig 2: Breather Hose, Air Intake Hose & Air Cleaner Assembly
    G08312310Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • When installing the air intake hose, the plate of the hose clamp must be in line with the stopper of the hose.
    • When installing the air intake hose, the center of the mark of hose must be in line with the throttle body rib.
    Fig 3: Air Intake Hose Installation Position
    G08312311Courtesy of KIA MOTORS AMERICA, INC.
  4. Disconnect the TCM connector (A) and remove the room relay box cover (B).
    Fig 4: TCM Connector & Relay Box Cover
    G00548179Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the resolver mounting bolt (A) and drain pipe fixed bolt (B) and then spaced the HPCU.

    Tightening torque : 

    3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)

    Fig 5: Resolver & Drain Pipe Bolts
    G00548180Courtesy of KIA MOTORS AMERICA, INC.
  6. Remove the battery (+) cable (A) after removing nut.
    Fig 6: Battery Positive Cable
    G00548181Courtesy of KIA MOTORS AMERICA, INC.
  7. Push back the battery (+) cable (A) and then remove the TCM bracket mounting bolt (B).

    Tightening torque : 

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

    Fig 7: Battery Positive Cable & TCM Bracket Mounting Bolt
    G00548182Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the TCM (A) after removing TCM bracket mounting nut.

    Tightening torque : 

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

Fig 8: Transaxle Control Module
G00548183Courtesy of KIA MOTORS AMERICA, INC.