Kia Optima Hybrid: Automatic Transaxle Control System / Transaxle Control Module (TCM) Description and Operation

Description
Transaxle Control Module (TCM) is the automatic transaxle''s brain. The module receives and processes signals from various sensors and implements a wide range of transaxle controls to ensure optimal driving conditions for the driver.
TCM is programmed for optimal response to any on-road situation. In the event of a transaxle failure or malfunction, TCM stores the fault information in memory so that the technician may reference the code and quickly repair the transaxle.
Functions
Monitors the vehicle''s operating conditions to determine the optimal gear setting.
Performs a gear change if the current gear setting differs from the identified optimal gear setting.
Calculates the optimal line pressure level by constantly monitoring the torque level and adjusts the pressure accordingly.
Diagnoses the automatic transaxle for faults and failures.
Components and Components Location

Component Location [Vehicle Installation component] 1. Automatic transaxle2. Transaxle control module (TCM)3. Shift lever4. Data Link Connector (DLC) [Transaxle Installation component] 1. Input speed sensor2. ...

Transaxle Control Module (TCM) Schematic Diagrams

TCM connector and terminal function TCM terminal function Connector [A] PinDescriptionPinDescription2-33ON/OFF solenoid valve A (SS-A)3Line pressure control solenoid valve (LINE_VFS)34Ground (Power 1)4Engine ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Canister Repair procedures


Removal 1. Turn the ignition switch OFF and disconnect the auxiliary battery 12 (V) negative (-) terminal. 2. Lift the vehicle. 3. Remove the rear muffler hanger (A). 4. Remove the rear suspension damper (A). 5. Disconnect the vapor tube quick connectors (A) and ventilation hoses (B). 6. Separate the ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Repair procedures


Fuel Pressure Test 1. Release the residual pressure in fuel line (Refer to “Release Residual Pressure in Fuel Line” in this group).     When removing the fuel pump relay, a Diagnostic Trouble Code (DTC) may occur. Delete the code with the GDS after completion of “Release Residual Pressure ...

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