CVT SYSTEM GENERAL


  1. OUTLINE


    1. A K313 Continuously Variable Transaxle (CVT) is used on the models with the 2ZR-FAE engine.

    2. A coaxial 2 discharge port oil pump system is used.

    3. A 7-speed sport sequential shiftmatic system with shift paddle switch (transmission shift switch assembly) is used.

    4. A pattern select switch is used.

    5. A gate type shift lever is used.

  2. SPECIFICATION

    CVT Assembly
    Shift Mechanism Electrohydraulic Control Type Steel-belt
    Forward/Reverse Switching Mechanism Electronic Control Type Planetary Gear
    Pulley Ratio (Speed Ratio) Forward 2.480 to 0.396
    Reverse*1 2.604 to 1.680
    Differential Gear Ratio*2 5.698
    Shift Pattern P - R - N - D - M
    Fluid Capacity 7.47 Liters (7.9 US qts, 6.6 Imp. qts)
    Fluid Type Toyota Genuine CVT Fluid FE
    Weight (Reference)*3 74.2 kg (163.6 lb)

    Tech Tips

    *1: Planetary gear ratio included

    *2: Reduction gear ratio included

    *3: Weight shows the figure with the fluid fully filled.

    Friction Disc and Gears
    Planetary Gear No. of Sun Gear Teeth 40
    No. of No. 1 Pinion Gear Teeth 18
    No. of No. 2 Pinion Gear Teeth 17
    No. of Ring Gear Teeth 82
    Reduction Gear No. of Drive Gear Teeth 25
    No. of Driven Gear Teeth 37
    Differential Gear No. of Drive Pinion Teeth 20
    No. of Ring Gear Teeth 77
    Forward Clutch No. of Discs 3
    Reverse Brake No. of Discs 3
    Torque Converter Assembly
    Torque Converter Type 3-element, 1-step, 2-phase
    Stall Torque Ratio 1.66

  3. MAIN FEATURES


    1. The K313 CVT has achieved the following performance features through the use of these items:

      Item Fuel Economy Power Efficiency Driveability Quietness Compact and Lightweight
      Pulley and Belt Type Shift Mechanism ○ ○ ○ ○ ○
      Double Pinion Type Forward/Reverse Switching Mechanism ○ ○ ○ - ○
      Torque Converter with Lock-up Clutch ○ ○ ○ ○ ○
      High Pressure 2 Discharge Port Oil Pump ○ ○ ○ - ○
      CVT Fluid Warmer (Transmission Oil Cooler) ○ - - - -
      High-pressure Hydraulic Control Circuit (Valve Body Unit) ○ ○ ○ - -
      Gear and CVT Belt Noise Reduction - - - ○ -
      Electronic Control Engine - CVT Integrated Control ○ ○ ○ - -
      Automatic Shift Control ○ ○ ○ - -
      7-speed Sport Sequential Shiftmatic with Shift Paddle Switch - ○ ○ - -
      Uphill/Downhill Shift Control - - ○ ○ -
      Lock-up Control ○ - ○ - -
      Flex Lock-up Control ○ - ○ - -
      Flex Start Control System ○ ○ ○ ○ -
      Isolated Line-pressure Control ○ - ○ - -

  4. 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)