AUTOMATIC TRANSMISSION SYSTEM GENERAL


  1. OUTLINE


    1. The AA81E 8-speed automatic transmission (8-speed sport direct shift) is used on 2WD models with the 2GR-FSE engine.

    2. A gate type shift lever is used.

    3. A multi-mode automatic transmission with shift paddle switch (transmission shift switch assembly) is used.

    4. A combination switch assembly (drive mode select and SNOW switch) which can be used to select the drive modes (NORMAL, SPORT or SNOW*) is provided.


      • *: Except models for G.C.C. countries

    5. An ATF warmer is used in the ATF cooling system.*


      • *: Except models for G.C.C. countries and models for Australia and general countries with towing package

    6. The Gear Shift Indicator system may not be provided depending on the destination.

  2. SPECIFICATION

    Automatic Transmission Assembly
    Gear Ratio 1st 4.596
    2nd 2.724
    3rd 1.863
    4th 1.464
    5th 1.231
    6th 1.000
    7th 0.824
    8th 0.685
    Reverse 4.056
    ATF Cooling System ATF Warmer*1
    Fluid Type Toyota Genuine ATF WS
    Fluid Capacity

    9.5 Liters (10.0 US qts, 8.4 Imp. qts)*2

    9.7 Liters (10.3 US qts, 8.5 Imp. qts)*3
    Weight (Reference)*4 93.6 kg (206.4 lb)

    Tech Tips

    *1: Except models for G.C.C. countries and models for Australia and general countries with towing package

    *2: Models with ATF warmer

    *3: Models without ATF warmer

    *4: Weight refers to a transmission with the fluid fully filled.

    Planetary Gears
    Front Planetary Gear Unit No. of Sun Gear Teeth 38
    No. of Inner Pinion Gear Teeth 16
    No. of Outer Pinion Gear Teeth 19
    No. of Ring Gear Teeth 82
    Rear Planetary Gear Unit No. of Middle Sun Gear Teeth 34
    No. of Rear Sun Gear Teeth 30
    No. of Long Pinion Gear Teeth 20
    No. of Short Pinion Gear Teeth 17
    No. of Ring Gear Teeth 74
    Friction Engagement Components and 1-way Clutch
    No. 1 Clutch (C1) No. of Discs 5
    No. 2 Clutch (C2) 5
    No. 3 Clutch (C3) 4
    No. 4 Clutch (C4) 5
    No. 1 Brake (B1) No. of Discs 4
    No. 2 Brake (B2) 4
    No. 1 1-way Clutch (F1) No. of Sprags 24
    Torque Converter Assembly
    Torque Converter Type 3-element, 1-step, 2-phase
    Stall Torque Ratio 1.85