Steps to troubleshoot and repair an automatic transmission:

1. Diagnostics:

* Read fault codes using a scanner.
* Check the level and condition of the transmission fluid.
* Inspect and check the condition of the wiring harness and connectors.
* Listen for any unusual noises or vibrations.

2. Elimination of minor faults:

* Replace transmission fluid.
* Replace the transmission filter.
* Repair or replace failed sensors or solenoids.
* Reset the transmission adaptive values.

3. Major repairs:

* Removal and disassembly of the transmission.
* Inspect and replace worn or damaged parts such as clutches, bands, gears and bearings.
* Cleaning and replacement of valve bodies.
* Replacing the torque converter.
*Transmission assembly and reinstallation.

4. Programming and setting:

* Transmission programming according to manufacturer specifications.
* Adjustment of pressure and gear shifting.
* Adaptation of transmission for a specific car.

Automatic transmission repair tips:

* Use only high-quality materials and spare parts.
*Follow manufacturer’s instructions exactly.
* Use special tools to disassemble and assemble the transmission.
* Make sure the valve body and all hydraulic passages are clean.
*Tighten all bolts and nuts to the specified torque.
* After repair, test and calibrate the transmission.

Warning:

Repairing an automatic transmission requires special knowledge, skills and equipment. If you are not qualified, it is best to seek help from a professional transmission mechanic.

Thanks for reading!