The main aspects that automatic transmission diagnostics can show:
Mechanical problems:
* Wear of planetary gears and clutches
*Hydraulic transformer malfunction
* Problems with the hydraulic module and solenoids
* Transmission fluid leaks
* Damage to shafts, gears and bearings
Electrical problems:
* Malfunctions of speed, position and pressure sensors
* Problems with wiring and connectors
* Malfunctions of the electronic control unit (ECU)
Hydraulic problems:
*Low or high transmission fluid pressure
* Clogged hydraulic channels and filters
*Hydraulic pump malfunctions
* Slipping or incomplete engagement of gears
Software problems:
* Errors in ECU software
* Incorrect settings and calibrations
Other problems:
* Increased wear of transmission fluid
* Presence of metal shavings or contaminants in the oil
* Improper maintenance or use of the vehicle
How is diagnostics performed:
Automatic transmission diagnostics usually include:
* Connecting the scanner to the ECU
* Reading and analysis of trouble codes (DTC)
* Checking readings of sensors, solenoids and other components
* Carrying out hydraulic tests and pressure measurements
* Visual inspection and assessment of the condition of components