DRIVE-BY-WIRE CONTROL OUTLINE [MZR 1.6]

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•  The drive-by-wire control calculates the optimum target throttle valve opening angle at all ranges of engine speeds and controls the throttle valve actuator.
•  The drive-by-wire control includes idle speed control, accelerator control, traction control, cruise control, excess engine speed control, excess vehicle speed control and brake override system.

Control List

Control name

Control Outline
Idle speed control
•  Controls the throttle valve opening angle during idling so that the idle speed is at the target idle speed.
Accelerator control
•  Controls the throttle valve opening angle according to the amount of AP depression. Has a fully-closed throttle learning function for consistent setting of the optimum throttle opening angle according to changes due to age deterioration.
Traction control
•  Controls the throttle valve opening angle by torque up/down request signals from the TCM (ATX) and DSC HU/CM.
Cruise control (With cruise control system)
•  Sets the vehicle speed by operation of the cruise control switch and controls the throttle valve opening angle so that it becomes close to the set vehicle speed.
Excess engine speed control
•  If the engine reaches a high engine speed, the throttle valve is closed to protect the engine.
Excess vehicle speed control
•  If the vehicle reaches a high speed, the throttle valve is closed to keep the vehicle speed below the speed limit.
Brake override system
•  If the brake pedal is depressed with the accelerator pedal depressed, the vehicle can be stopped safely by closing the throttle valve. As a result, the brake operation takes priority over the accelerator pedal operation.