Transmission General Description

Transmission General Description

Caution: Lack of basic knowledge of this powertrain when performing diagnostic procedures could result in incorrect diagnostic performance or damage to powertrain components. Do not attempt to diagnose a powertrain problem without this basic knowledge.

The new automatic transmission AISIN (81-40LE) is an electronically controlled 4-speed automatic transmission with lock-up mechanism.

The transmission is mainly composed of the torque converter with lock up clutch, newly developed 4-speed planetary gear unit, the hydraulic control system and the electric control system.

Hydraulic Control System

Based on the hydraulic pressure created by the oil pump, the TCM sends signals to the solenoid and the hydraulic control system governs the hydraulic pressure acting on the torque converter, planetary gear, clutches, and brakes in accordance with the vehicle driving conditions.

Function of Components









Operations of Clutches and Brakes