FOUR WHEEL DRIVE CONTROL SYSTEM


  1. CONSTRUCTION


    1. The transfer shift actuator assembly consists of the high-low switching mechanism (to switch the transfer gear ratio) and the free-lock switching mechanism (to switch the center differential lock).

      A019QOUC01
      *1 Center Differential Lock Shift Fork Shaft *2 H-L Shift Fork Shaft
      *a High-low Switching Mechanism (to Switch Transfer Gear Ratio) *b Free-lock Switching Mechanism (to Switch Center Differential Lock)
      A019R1AE02

      1. High-low Switching Mechanism


        • By rotating the H-L shift motor clockwise or counterclockwise in accordance with a signal from the 4WD control ECU, the H-L shift fork shaft is transferred to switch the transfer gear ratio between high and low.

        • The drive mechanism for switching the transfer gear ratio between high and low consists of an H-L shift motor, H-L limit switch, and H-L shift fork shaft.

        • The H-L limit switch detects the H-L shift motor position.

          A019R4IC01
          *1 H-L Limit Switch *2 H-L Shift Fork Shaft
          *3 H-L Shift Motor - -
          *a Low Side *b High Side
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      2. Free-lock Switching Mechanism


        • By rotating the center differential lock shift motor clockwise or counterclockwise in accordance with a signal from the 4WD control ECU, the center differential lock shift fork shaft is transferred to switch the center differential between free and lock.

        • The drive mechanism for switching the center differential between free and lock consists of a center differential lock shift motor, center differential lock limit switch, center differential lock position switch, and center differential lock shift fork shaft.

        • The center differential lock limit switch detects the center differential lock shift motor position.

        • The center differential lock position switch detects the lock position of the center differential.

          A019R54C01
          *1 Center Differential Lock Limit Switch *2 Center Differential Lock Shift Fork Shaft
          *3 Center Differential Lock Shift Motor *4 Center Differential Lock Position Switch
          *a Lock Side *b Free Side
          A019QKZE02