Location and purpose
The automatic transmission control unit (AT) in a Nissan Terrano is usually located in the engine compartment, next to the automatic transmission itself. It is responsible for controlling gear shifting, torque converter locking and other functions related to the operation of the automatic transmission.
Design of the automatic transmission control unit
The automatic transmission control unit consists of the following main components:
* Electronic control unit (ECU): This is the brain of the control unit, which contains the software that controls the operation of the automatic transmission.
* Sensors: The control unit uses various sensors to obtain data on engine speed, throttle position, automatic transmission fluid temperature, etc.
* Actuators: The control unit controls solenoid valves and other actuators to change gears and perform other functions.
Types of automatic transmission control units for Nissan Terrano
Depending on the year of manufacture and model of the Nissan Terrano, several different types of automatic transmission control units can be used. The most common options:
* RE5R05A
*JF606E
* RE4F04A
Symptoms of a faulty automatic transmission control unit
A faulty automatic transmission control module can lead to a variety of symptoms, including:
* Noisy or harsh gear changes
* Slipping or vibration when shifting gears
* Increased fuel consumption
* Check engine (emergency mode)
*No gear changes
Diagnostics and repair
Diagnosing a faulty automatic transmission control unit usually involves scanning fault codes and physically inspecting the control unit itself. Repairing the automatic transmission control unit may require replacing damaged components or reprogramming the computer.