The transmission control unit (TCU) in the SsangYong Aktion is responsible for controlling the operation of the automatic transmission (automatic transmission). It controls parameters such as gear shifting, torque converter lock-up and torque transmitted to the wheels.
TCU Location:
* SsangYong Aktion (2006-2011): Under the center console, next to the gear lever.
* SsangYong Action Sport (2007-2011): Under the dashboard, driver’s side.
* SsangYong Action New (2011-2013): Under the dashboard, driver’s side.
TCU functions:
* Gear shift control depending on throttle position and vehicle speed.
* Torque converter lock-up to improve fuel efficiency and reduce power loss.
* Adjusts the torque transmitted to the wheels to provide traction and prevent slipping.
* Diagnostics and storage of fault codes related to the operation of the automatic transmission.
TCU malfunctions:
* Automatic transmission slipping or hard gear shifting.
* Untimely gear shifting or delayed shifting.
* No indication of the selected gear on the dashboard.
* Flashing or no signal indicating gear is engaged.
* TCU related fault codes.
TCU diagnostics and repair:
* TCU diagnostics are performed using a special scanner.
* TCU repair usually involves replacing the faulty unit.
* It is important to use only an original or quality TCU to ensure proper operation of the automatic transmission.