General

4EAT Transmission:

GENERAL
This system utilizes a microcomputer for accurate control of the vehicle speed, engine brake operation, lock-up operation, gear shift timing and others. It corresponds to the throttle opening, actual vehicle speed, engine rpm and range position signal. Further, it is also provided with an automatic drive pattern selecting function which selects between the "normal drive pattern" suitable for ordinary economical driving and the "power drive paflern" suitable for acceleration and uphill driving depending upon depression of the accelerator pedal.

FEATURES
1. Two one-way clutches and four accumulators are used to reduce gear shift shock and gear select shock, and a fully electronic control system is em- ployed for accurate gearshift control from 1st to 4th speed, hydraulic oil pressure (line pressure), lock-up operation, etc.
2. A hydraulic lock-up type torque converter, variable delivery oil pump, gear train with two sets of simple planetary gears (permitting four forward and one reverse stage) are used to improve driving dynamics and fuel consumption.
3. A push-pull cable featuring less vibration to the high rigid transmission case and control unit is used for improved quietness during driving.
4. A self-diagnosis function and fail-safe function are incorporated for improved serviceability and reliability.