Electronic Controlled Transmission (ECT)
Automatic transmission models are equipped with an electronic control unit to control transmission operation. The ECU of the ECS provides signals on engine operation to the ECU of the ECT system. This information is used by the ECT computer to prevent shift up to 34rd gear or overdrive during cold engine operation.
NOTE:
The ECU of the ECS is not interchangeable with the ECU of the ECT system.