Kia Cadenza YG: Automatic Transaxle Control System / Transaxle Control Module (TCM) Description and Operation

Kia Cadenza YG 2016-2021 Service Manual / Automatic Transaxle System / 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
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Monitors the vehicle''s operating conditions to determine the optimal gear setting.
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Performs a gear change if the current gear setting differs from the identified optimal gear setting.
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Determines the need for Damper Clutch (D/C) activation and engages the clutch accordingly.
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Calculates the optimal line pressure level by constantly monitoring the torque level and adjusts the pressure accordingly.
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Diagnoses the automatic transaxle for faults and failures.

    Components Location [Vehicle Components] 1. Automatic transaxle2. Transaxle Control Module (TCM)3. Shift lever4. Date Linke Connector (DLC) [Transaxle Components] 1.

    1. TCM connector and terminal function 2. TCM terminal function Connector [A] PinDescriptionPinDescription1-45Inhibitor switch signal ''S2''2-46Inhibitor switch signal ''S3''3-47Inhibitor switch signal ''S4''4-48-5-49-6-50-7-51-8-52-9-53-10CAN communication line (HIGH)54Sports mode down switch11-55-12-56-13-57-14-58-15-59-16-60-17-61-18-62-19-63-20-64-21-65-22-66-23-67-24-68-25-69-26-70-27Ignition switch71-28-72-29Sports mode up switch73-30-74-31-75-32-76-33-77-34-78　35CAN communication line Low79Sports mode Select switch36-80-37-81-38-82-39-83-40-84Shift lock solenoid41-85Reverse lamp relay42-86P/N relay43-87-44Inhibitor switch signal ''S1''88- Connector [B] PinDescriptionPinDescription1Overdrive clutch control solenoid valve (VFS)52Underdrive brake control solenoid valve (VFS)3Input speed sensor signal53SS-B Solenoid valve (ON/OFF)4Output speed sensor signal54Output speed sensor power26Torque converter control solenoid valve (VFS)55Oil temperature sensor (-)2735R Clutch control solenoid valve (VFS)57Oil temperature sensor (+)28SS-A Solenoid valve (ON/OFF) 76Solenoid valve power 129Input speed sensor power77Solenoid valve power 251Line pressure control solenoid valve (VFS)7826 Brake control solenoid valve (VFS) 3.

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