СИСТЕМА АВТОМАТИЧЕСКОЙ ТРАНСМИССИИ


  1. CONSTRUCTION


    1. The shift solenoid valve DSL (S1) and shift solenoid valve S4 (SR) are 3-way solenoid valves.

    2. The No. 3 transmission solenoid assembly (S2) uses a 2-way solenoid valve.

    3. A filter is provided at the tip of the solenoid valve to further improve operational reliability.

      Figure 1. Shift Solenoid Valve S1

      A019QH2C01
      *1 Filter - -
      *a Off Condition *b On Condition
      A0009RQ Line Pressure A01N5I9 Control Pressure
      A01N5IT Drain - -

      Figure 2. Shift Solenoid Valve S2

      A019QHGC01
      *1 Filter - -
      *a Off Condition *b On Condition
      A0009RQ Line Pressure A01N5I9 Control Pressure

      Figure 3. Shift Solenoid Valve SR

      A019QVSC01
      *1 Filter - -
      *a Off Condition *b On Condition
      A0009RQ Line Pressure A01N5I9 Control Pressure
      A01N5IT Drain - -

    4. In order to provide a hydraulic pressure that is proportional to the current that flows to the solenoid coil, the shift solenoid valves SL1 and SL2 linearly control the clutch pressure based on the signals from the ECM.

      A019R2WE02

    5. In order to provide a hydraulic pressure that is proportional to the current that flows to the solenoid coil, the line pressure control solenoid assembly (SLT) linearly controls the line pressure based on the signals from the ECM.

      A019QCAE02

    6. In order to provide a hydraulic pressure that is proportional to the current that flows to the solenoid coil, the lock-up control solenoid assembly (SLU) linearly controls the lock-up clutch engagement pressure based on the signals from the ECM.

      A019QDVE02
      Function of Shift Solenoid Valves
      Shift Solenoid Valve Function
      S1 Switches the 2-3 shift valve.
      S2 Switches the 1-2 shift valve and the 3-4 shift valve.
      SR Switches the clutch apply control valve.
      SL1

      • C1clutch pressure control

      • Accumulator back pressure control
      SL2

      B1, B2and B4brake pressure control
      SLT

      • Line pressure control

      • Accumulator back pressure control
      SLU

      • Lock-up clutch pressure control

      • Accumulator back pressure control