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

•	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.

•	Determines the need for Damper Clutch (D/C) activation and engages the clutch accordingly.

•	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

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

Transaxle Control Module (TCM) Schematic Diagrams❯

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.

Other information:

Kia Cadenza YG 2016-2021 Service Manual: Lane Departure Warning System (LDWS) Unit Repair procedures

Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the LDWS unit cover (A). 3. Remove the LDWS unit connector (A). 4. Remove the LDWS unit after widening the mounting clips. Installation 1. Install the LDWS unit. 2.

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

Other information:

Kia Cadenza YG 2016-2021 Service Manual: Lane Departure Warning System (LDWS) Unit Repair procedures

Kia Cadenza YG 2016-2021 Service Manual: Intake Actuator Description and Operation

Categories