Work with elements of electrical equipment
Do not disconnect the battery while the engine is running and the ECU with the ignition on.
Before connecting the connector, check the condition of the various pins (deformation, oxidation, etc.) During electrical checks, the battery must be properly charged.
It is forbidden to use a voltage source with a voltage higher than 16V.
The use of an indicator lamp is prohibited.
Work with mechanical components
Do not place the gearbox on the ground without protection.
Do not use attachments such as the handle to lift the gearbox. Be sure to insert the pin holding the torque converter when the transmission is removed. Be sure to use the alignment pins to connect the gearbox to the engine. Remove the pin holding the torque converter just before connecting the transmission to the engine.
Oil quality
If there is a serious malfunction in the gearbox that has led to a malfunction or destruction of the clutch, the oil will overheat and become contaminated (oil «burnt»). This oil is characterized by a black color and an unpleasant odor.
In this case, the automatic transmission needs to be replaced.