DIFFERENTIAL SYSTEM


  1. OUTLINE


    1. Front Differential (4WD Models)


      1. An SD20C, SD20BD or SD20CD type front differential is provided depending on the model.

      2. An Automatic Disconnecting Differential (A.D.D.) actuator (differential motor actuator assembly) is installed to the SD20BD or SD20CD type front differential. The A.D.D. actuator (differential motor actuator assembly) connects and disconnects the driveline between the transfer and the front wheels. For details, see the TRANSFER / 4WD / AWD section.

      3. An oil temperature warning system is provided. The temperature sensor is positioned on the front differential to monitor the oil temperature of the front differential. For details, see the TRANSFER / 4WD / AWD section.

        Figure 1. SD20C Type Front Differential

        B0020B6

        Figure 2. SD20BD or SD20CD Type Front Differential (with A.D.D. Actuator)

        B0020I2

    2. Rear Differential


      1. A BD20D, BD22A, BD22B, BD22AN or BD22BN type rear differential is used.

      2. The BD22AN or BD22BN type rear differential has a built-in electronic differential lock mechanism.

        Figure 3. BD20D Rear Differential

        B0020KL

        Figure 4. BD22A or BD22B Rear Differential

        B0020NH

        Figure 5. BD22AN or BD22BN Rear Differential (with Electronic Differential Lock Mechanism)

        B0020ER

  2. SPECIFICATION


    1. Front Differential (4WD Models)


      1. Models with 2TR-FE Engine

        Differential Gear Ratio

        4.300*1

        4.555*2
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth

        43*1

        41*2
        Drive Pinion No. of Gear Teeth

        10*1

        9*2
        No. of Differential Pinion 2
        Oil Capacity

        1.45 Liters (1.53 US qts, 1.28 Imp. qts)*3

        1.60 Liters (1.69 US qts, 1.41 Imp. qts)*4
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

        *1: Models with 16 inch tire

        *2: Models with 17 inch tire

        *3: Models without A.D.D. actuator

        *4: Models with A.D.D. actuator

      2. Models with 1GR-FE Engine

        Differential Gear Ratio 3.909
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth 43
        Drive Pinion No. of Gear Teeth 11
        No. of Differential Pinion 2
        Oil Capacity 1.6 Liters (1.69 US qts, 1.41 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

      3. Models with 1GD-FTV Engine

        Differential Gear Ratio

        3.583*1

        3.909*2
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth 43
        Drive Pinion No. of Gear Teeth

        12*1

        11*2
        No. of Differential Pinion 2
        Oil Capacity

        1.45 Liters (1.53 US qts, 1.28 Imp. qts)*3

        1.60 Liters (1.69 US qts, 1.41 Imp. qts)*4
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

        *1: Models with RC61F manual transmission

        *2: Models with AC60F automatic transmission

        *3: Models without A.D.D. actuator

        *4: Models with A.D.D. actuator

      4. Models with 2GD-FTV Engine

        Transmission Type RC60F
        Differential Gear Ratio 3.583
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth 43
        Drive Pinion No. of Gear Teeth 12
        No. of Differential Pinion 2
        Oil Capacity

        1.45 Liters (1.53 US qts, 1.28 Imp. qts)*1

        1.60 Liters (1.69 US qts, 1.41 Imp. qts)*2
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

        *1: Models without A.D.D. actuator

        *2: Models with A.D.D. actuator

        Transmission Type AC60F
        Differential Gear Ratio 4.100
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth 41
        Drive Pinion No. of Gear Teeth 10
        No. of Differential Pinion 2
        Oil Capacity

        1.45 Liters (1.53 US qts, 1.28 Imp. qts)*1

        1.60 Liters (1.69 US qts, 1.41 Imp. qts)*2
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

        *1: Models without A.D.D. actuator

        *2: Models with A.D.D. actuator

      5. Models with 5L-E Engine

        Differential Gear Ratio

        4.300*1

        4.555*2
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth

        43*1

        41*2
        Drive Pinion No. of Gear Teeth

        10*1

        9*2
        No. of Differential Pinion 2
        Oil Capacity 1.60 Liters (1.69 US qts, 1.41 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

        *1: Models with 16 inch tire

        *2: Models with 17 inch tire

    2. Rear Differential


      1. Models with 1TR-FE Engine

        TMT or TSAM Made Models
        Differential Type BD20D
        Differential Gear Ratio 4.555
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth 41
        Drive Pinion No. of Gear Teeth 9
        No. of Differential Pinion 2
        Oil Capacity 2.75 Liters (2.91 US qts, 2.42 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

        Tech Tips

        TMT: Toyota Motor Thailand Co., Ltd.

        TSAM: Toyota South Africa Motors (Pty) Ltd.

      2. Models with 2TR-FE Engine

        TMT Made Models
        Drive Type 2WD
        Differential Type BD20D*1 BD22A*2
        Differential Gear Ratio 4.100 ←
        Ring Gear Size 205.0 mm (8.0 in.) 225.0 mm (8.8 in.)
        Ring Gear No. of Gear Teeth 41 ←
        Drive Pinion No. of Gear Teeth 10 ←
        No. of Differential Pinion 2 ←
        Oil Capacity 2.75 Liters (2.91 US qts, 2.42 Imp. qts) 3.65 Liters (3.86 US qts, 3.21 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

        *1: Models for Saudi Arabia

        *2: Except models for Saudi Arabia

        TMT Made Models
        Drive Type 4WD
        Differential Type BD22A BD22AN
        Differential Gear Ratio

        4.300*1

        4.555*2

        		 ←
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth

        43*1

        41*2

        		 ←
        Drive Pinion No. of Gear Teeth

        10*1

        9*2

        		 ←
        No. of Differential Pinion 2 4
        Oil Capacity 3.65 Liters (3.86 US qts, 3.21 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

        *1: Except models with 16 inch tire

        *2: Models with 17 inch tire

        TSAM Made Models
        Drive Type 2WD 2WD PreRunner
        Differential Type BD22B BD22BN
        Differential Gear Ratio 4.100 4.555
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 41 ←
        Drive Pinion No. of Gear Teeth 10 9
        No. of Differential Pinion 2 4
        Oil Capacity 3.75 Liters (3.96 US qts, 3.30 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←
        TSAM Made Models
        Drive Type 4WD
        Differential Type BD22B BD22BN
        Differential Gear Ratio

        4.300*1

        4.555*2

        		 ←
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth

        43*1

        41*2

        		 ←
        Drive Pinion No. of Gear Teeth

        10*1

        9*2

        		 ←
        No. of Differential Pinion 2 4
        Oil Capacity 3.75 Liters (3.96 US qts, 3.30 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

        *1: Models with 16 inch tire

        *2: Models with 17 inch tire

      3. Models with 1GR-FE Engine

        TMT Made Models
        Drive Type 2WD 4WD
        Differential Type BD22A BD22AN
        Differential Gear Ratio

        3.583*1

        3.909*2

        		 3.909
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 43 ←
        Drive Pinion No. of Gear Teeth

        12*1

        11*2

        		 11
        No. of Differential Pinion 2 4
        Oil Capacity 3.65 Liters (3.86 US qts, 3.21 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

        *1: Models with 16 inch tire

        *2: Models with 17 inch tire

        TSAM Made Models
        Differential Type BD22BN
        Differential Gear Ratio 3.909
        Ring Gear Size 225.0 mm (8.8 in.)
        Ring Gear No. of Gear Teeth 43
        Drive Pinion No. of Gear Teeth 11
        No. of Differential Pinion 4
        Oil Capacity 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

      4. Models with 1GD-FTV Engine

        TMT Made Models
        Differential Type BD22A BD22AN
        Differential Gear Ratio

        3.583*1

        3.909*2

        		 ←
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 43 ←
        Drive Pinion No. of Gear Teeth

        12*1

        11*2

        		 ←
        No. of Differential Pinion 2 4
        Oil Capacity 3.65 Liters (3.86 US qts, 3.21 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

        *1: Models with R151, RC61 or RC61F manual transmission

        *2: Models with AC60E or AC60F automatic transmission

        TSAM Made Models
        Differential Type BD22B BD22BN
        Differential Gear Ratio 3.909

        3.583*1

        3.909*2
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 43 ←
        Drive Pinion No. of Gear Teeth 11

        12*1

        11*2
        No. of Differential Pinion 2 4
        Oil Capacity 3.75 Liters (3.96 US qts, 3.30 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

        *1: Models with RC61 or RC61F manual transmission

        *2: Models with AC60E or AC60F automatic transmission

      5. Models with 2GD-FTV Engine

        TMT Made Models
        Drive Type 2WD
        Differential Type BD20D BD22A
        Differential Gear Ratio 3.583 ←
        Ring Gear Size 205.0 mm (8.0 in.) 225.0 mm (8.8 in.)
        Ring Gear No. of Gear Teeth 43 ←
        Drive Pinion No. of Gear Teeth 12 ←
        No. of Differential Pinion 2 ←
        Oil Capacity 2.75 Liters (2.91 US qts, 2.42 Imp. qts) 3.65 Liters (3.86 US qts, 3.21 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←
        TMT Made Models
        Drive Type 2WD PreRunner
        Differential Type BD22A BD22AN
        Differential Gear Ratio

        3.583*1

        4.100*2

        3.583*1

        4.100*2
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth

        43*1

        41*2

        43*1

        41*2
        Drive Pinion No. of Gear Teeth

        12*1

        10*2

        12*1

        10*2
        No. of Differential Pinion 2 4
        Oil Capacity 3.65 Liters (3.86 US qts, 3.21 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

        *1: Models with RC60 manual transmission

        *2: Models with AC60E automatic transmission

        TMT Made Models
        Transmission Type RC60F
        Differential Type BD22A BD22AN
        Differential Gear Ratio 3.583 ←
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 43 ←
        Drive Pinion No. of Gear Teeth 12 ←
        No. of Differential Pinion 2 4
        Oil Capacity 3.65 Liters (3.86 US qts, 3.21 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←
        TMT Made Models
        Transmission Type AC60F
        Differential Type BD22A BD22AN
        Differential Gear Ratio 4.100 ←
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 41 ←
        Drive Pinion No. of Gear Teeth 10 ←
        No. of Differential Pinion 2 4
        Oil Capacity 3.65 Liters (3.86 US qts, 3.21 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←
        TSAM Made Models
        Transmission Type R151, RC60, RC60F
        Differential Type BD22B BD22BN
        Differential Gear Ratio 3.583 ←
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 43 ←
        Drive Pinion No. of Gear Teeth 12 ←
        No. of Differential Pinion 2 4
        Oil Capacity 3.75 Liters (3.96 US qts, 3.30 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←
        TSAM Made Models
        Transmission Type AC60F
        Differential Type BD22B BD22BN
        Differential Gear Ratio 4.100 ←
        Ring Gear Size 225.0 mm (8.8 in.) ←
        Ring Gear No. of Gear Teeth 41 ←
        Drive Pinion No. of Gear Teeth 10 ←
        No. of Differential Pinion 2 4
        Oil Capacity 3.75 Liters (3.96 US qts, 3.30 Imp. qts) 3.60 Liters (3.80 US qts, 3.17 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent ←
        Oil Viscosity SAE 75W-85 ←
        Oil Grade API GL-5 ←

      6. Models with 2KD-FTV Engine

        Drive Type 2WD
        Differential Type BD20D
        Differential Gear Ratio 4.300
        Ring Gear Size 205.0 mm (8.0 in.)
        Ring Gear No. of Gear Teeth 43
        Drive Pinion No. of Gear Teeth 10
        No. of Differential Pinion 2
        Oil Capacity 2.75 Liters (2.91 US qts, 2.42 Imp. qts)
        Oil Type Toyota Genuine Differential Gear Oil LT or Equivalent
        Oil Viscosity SAE 75W-85
        Oil Grade API GL-5

  3. PRECAUTION


    1. The ABS, TRC and VSC functions in the brake control system stop while the rear differential lock system is operating.