Visual inspection
* Check the general condition of the box: Make sure there are no cracks, dents or signs of fluid leakage on the body of the box.
* Inspect the box tray: Check the box tray for dents, cracks or leaks.
* Check fluid level and condition: Check the automatic transmission fluid level using the dipstick and make sure it is clear and red or pink in color.
Test drive
* Gear shifting: Take a test drive and check if the gear shifts smoothly and there is no slipping or hesitation.
* Traction check: Accelerate the vehicle to a speed of 80-100 km/h and check for vibration or noise during acceleration.
* Kick-down mode: With kick-down mode (full throttle) engaged, check whether the transmission downshifts correctly and reaches maximum acceleration quickly.
Diagnostics using a scanner
* Read Error Codes: Connect an OBD-II scanner to your vehicle and check for transmission-related error codes.
* Check parameters: Read transmission parameters such as fluid temperature, pressure and shaft speed to ensure they are within normal range.
Other checks
* Sensor Test: Test transmission sensors such as the shift position sensor and speed sensor to ensure they are operating properly.
*Checking Solenoids: Check the transmission solenoids to ensure they are shifting correctly and providing proper fluid pressure.
*Torque Converter Check: Check the torque converter to ensure there is no vibration or noise during operation.