STEP 1. Check the engine performance.
STEP 2. Check the transaxle control cable.
STEP 3. Check the transmission fluid.
STEP 4. Check the transmission fluid level.
STEP 5. Perform a hydraulic test.
STEP 6. Replace the torque converter.
STEP 7. Remove the transaxle assembly from the vehicle.
Disassemble and check the transaxle assembly to check if there is a foreign material inside.Is the check result satisfactory?
Replace the transaxle assembly. Replace the failure part.