ELECTRONIC SHIFT LEVER SYSTEM GENERAL


  1. OUTLINE


    1. The electronic shift lever system is a shift control system using shift-by-wire technology.

    2. This system judges the vehicle operating conditions based on the information from various sensors, switches and ECUs, and activates appropriate shift control in accordance with the driver's shift lever (shift lock control unit assembly) and P position switch (transmission shift main switch) operation.

    3. A compact shift lever (shift lock control unit assembly) is used. It is a momentary type mechanism with a shift lever that returns to the home position when the driver's hand is released from the shift knob after a shifting operation. It can be shifted with a fingertip, and the ergonomically designed shifting pattern offers excellent ease of operation.

    4. If the accelerator pedal is depressed with the shift lever in N, a warning message appears on the multi-information display and a buzzer in the combination meter assembly sounds to warn the driver.

    5. If the driver door is opened with the power switch on (READY) and the shift lever in N, D or B, a warning message appears on the multi-information display and a buzzer in the combination meter assembly sounds to warn the driver.

    6. Shift lever position sensors (shift/select) provided in the shift lever (shift lock control unit assembly) detect the shift lever position (R, N, D or B) and send signals to the power management control ECU. The power management control ECU controls the speed of the engine, Motor Generator No. 1 (MG1) and Motor Generator No. 2 (MG2), in order to produce an optimal gear ratio.

    7. The power management control ECU selects the shift state in accordance with the signals from the shift lever position sensors.

    8. With this system, when the driver presses the P position switch (transmission shift main switch), P position control actuates the shift control actuator assembly located in the hybrid vehicle transaxle assembly in order to mechanically lock the parking gear, which engages the parking lock.

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