Toyota Land Cruiser automatic transmission control unit
The automatic transmission control unit (automatic transmission) is an electronic component that is responsible for controlling the operation of the automatic transmission in a Toyota Land Cruiser.
Functions
The automatic transmission control unit performs the following functions:
* Monitor input signals such as accelerator pedal position, vehicle speed and transmission fluid temperature.
* Calculation of optimal gear shift points based on programmed algorithms and input data.
* Control of solenoids and valves that change gears.
* Control of torque converter locking.
* Protection of automatic transmission from overheating and other malfunctions.
Location
On a Toyota Land Cruiser, the automatic transmission control unit is usually located:
* Inside the automatic transmission.
* Under the hood in a separate block.
Replacement
The automatic transmission control unit should be replaced by a qualified mechanic. This requires:
* Remove the automatic transmission.
* Replace the automatic transmission control unit.
* Reinstall the automatic transmission.
* Reset the adaptive parameters of the automatic transmission using a diagnostic scanner.
Symptoms of a problem
A faulty automatic transmission control unit can cause the following symptoms:
* Problems with gear shifting.
* Burning odors from transmission.
* Transmission fluid leak.
* The transmission fault warning light comes on.
Manufacturers of automatic transmission control units for Toyota Land Cruiser
*Aisin AW
* Jatco
*ZF
Part numbers
Automatic transmission control unit part numbers for Toyota Land Cruiser may vary depending on the model, year of manufacture and type of automatic transmission. Typical part numbers include:
* 35430-60220
* 35410-60250
* 35430-60221
* 35410-60260
Additional information
* The automatic transmission control unit is an important component for smooth and efficient gear shifting.
* Regular automatic transmission maintenance, including changing the transmission fluid and filter, can help extend the life of the automatic transmission control unit.
* A faulty automatic transmission control unit can lead to serious problems with the transmission, so it is important to troubleshoot problems in a timely manner if they occur.