Checking the automatic transmission (automatic transmission) Toyota Corona Premio
1. Checking the transmission fluid level:
* Place the car on a level surface and let it idle for 2-3 minutes.
* Remove the automatic transmission oil dipstick and check the fluid level.
* The liquid should be at the level of the measure. If the level is low, add fluid recommended by the manufacturer.
2. Leak test:
* Inspect the automatic transmission and pan for fluid leaks.
* Repair any leaks found.
3. Gear shift check:
* Start the engine and place the gear shift lever in the “D” (drive) position.
* Smoothly press the accelerator pedal and watch the gears shift.
* Shifting should occur smoothly and without jerking or slipping.
* Repeat the test in other shift positions (for example, “R” (reverse), “N” (neutral), “P” (park)).
4. Checking the operation of the torque converter lock-up:
* At a speed of about 60 km/h, turn on the overdrive function (if equipped).
* If the torque converter lock-up is working correctly, the engine speed should decrease by approximately 200-300 rpm.
5. Checking the electronic control unit (ECU) of the automatic transmission:
*Use the OBD2 diagnostic scanner to check for trouble codes stored in the automatic transmission control unit.
*If any fault codes are found, please refer to your repair manual for details.
6. Inspection of automatic transmission solenoids:
*Depending on the Toyota Corona Premio model, some automatic transmission models may have electronic solenoids to control gear shifting.
* Check solenoids for wear or damage.
* Replace faulty solenoids if necessary.
7. Checking the automatic transmission filter:
* Check the automatic transmission filter regularly and replace it if necessary.
* A dirty filter can lead to problems with gear shifting and premature wear of the automatic transmission.
Additional tips:
*Only use transmission fluid recommended by the manufacturer.
* Carry out automatic transmission maintenance regularly, including replacing the fluid and filter.
* Avoid sudden acceleration and overloading of the vehicle.
*If you suspect an automatic transmission problem, take it to a qualified mechanic for diagnosis and repair.