AUTOMATIC TRANSAXLE SYSTEM


  1. OUTLINE


    1. A UA80F 8-speed Automatic Transaxle (Direct Shift-8AT) is used on AWD models.

    2. A gate type shift lever with boot is used.

    3. A multi-mode automatic transmission is used.

    4. A differential pre-torque mechanism is used. Straightline stability and acceleration performance during periods of low load and low differential rotation when the vehicle is being driven normally are ensured.

    5. An ATF warmer and an ATF cooler with transmission oil thermostat are provided in the ATF cooling system.

  2. SPECIFICATION

    Automatic Transaxle Assembly
    Transaxle Type UA80F
    Gear Ratio 1st 5.519
    2nd 3.184
    3rd 2.050
    4th 1.491
    5th 1.234
    6th 1.000
    7th 0.800
    8th 0.673
    Reverse 4.220
    Differential Gear Ratio*1 3.003
    Fluid Type TOYOTA Genuine ATF WS
    Fluid Capacity*2 Liters (US qts, Imp. qts) 7.6 (8.0,6.7)
    Weight (Reference)*3 kg (lb) 95.5 (211)

    *1: Counter gear ratio included

    *2: Differential fluid included

    *3: The weight shown is the weight of the part fully filled with fluid.

    Item Specification
    C1 No. 1 Clutch No. of Discs 5
    C2 No. 2 Clutch 4
    C3 No. 3 Clutch 3
    C4 No. 4 Clutch 4
    B1 No. 1 Brake 4
    B2 No. 2 Brake 5
    Front Planetary Gear Unit No. of Front Sun Gear Teeth 42
    No. of Inner Pinion Gear Teeth 15
    No. of Outer Pinion Gear Teeth 18
    No. of Ring Gear Teeth 82
    Rear Planetary Gear Unit No. of Middle Sun Gear Teeth 34
    No. of Rear Sun Gear Teeth 26
    No. of Long Pinion Gear Teeth 18
    No. of Short Pinion Gear Teeth 15
    No. of Ring Gear Teeth 70
    Counter Gear No. of Drive Gear Teeth 52
    No. of Driven Gear Teeth 49
    Torque Converter Assembly
    Torque Converter Assembly Type 3-element, 1-step, 2-phase
    Stall Torque Ratio 1.76

  3. PRECAUTION


    1. Ignition Switch Expressions


      1. The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.

        Expression

        Ignition Switch

        (Position)

        Engine Switch

        (Condition)
        Ignition Switch off LOCK Off (Lock)
        Ignition Switch ACC ACC On (ACC)
        Ignition Switch ON ON On (IG)
        Engine Start START On (Start)