AUTOMATIC TRANSMISSION SYSTEM GENERAL


  1. OUTLINE


    1. The A343F 4-speed Electronic Control Transmission (ECT) is used on the 4WD models with 2TR-FE engine.

    2. A gate type shift lever is used.

  2. SPECIFICATION

    Automatic Transmission Assembly
    Control ECU ECM
    Gear Ratio 1st 2.804
    2nd 1.531
    3rd 1.000
    4th 0.753
    Reverse 2.393
    Fluid Type Toyota Genuine ATF Type T-IV
    Fluid Capacity 10.1 Liters (10.7 US qts, 8.9 Imp. qts)
    Weight (Reference)* 81.0 kg (178.6 lb)

    Tech Tips

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

    Planetary Gears
    Compound Gear Unit Front Planetary Gear Assembly No. of Sun Gear Teeth 42
    No. of Pinion Gear Teeth 19
    No. of Ring Gear Teeth 79
    Rear Planetary Gear Assembly No. of Sun Gear Teeth 33
    No. of Pinion Gear Teeth 23
    No. of Ring Gear Teeth 79
    Overdrive Planetary Gear Assembly No. of Sun Gear Teeth 31
    No. of Pinion Gear Teeth 32
    No. of Ring Gear Teeth 95
    Friction Engagement Components and 1-way Clutch

    Overdrive Direct Clutch (C0)

    		 No. of Discs 2

    Forward Clutch (C1)

    		 5

    Direct Clutch (C2)

    		 3

    Overdrive Brake (B0)

    		 4

    2nd Coast Brake (B1)

    		 Band Width 40 mm (1.57 in.)

    2nd Brake (B2)

    		 No. of Discs 5

    1st and Reverse Brake (B3)

    		 6

    Overdrive 1-way Clutch (F0)

    		 No. of Sprags 16

    1-way Clutch Assembly (F1)

    		 18

    No. 2 1-way Clutch (F2)

    		 28
    Torque Converter Assembly
    Torque Converter Type 3-element, 1-step, 2-phase
    Stall Torque Ratio 1.900