DRIVE-BY-WIRE CONTROL OPERATION [MZI-3.7]

id0140c3170600

Brake Override System

Operation of brake override system

  • In the event of any malfunction in the accelerator system, the vehicle is equipped with a sub-system that prioritizes the brake operation over the accelerator pedal operation. Specifically, the sub-system functions to close throttle valve when the brake pedal is depressed while the accelerator pedal is depressed to safely decelerate the vehicle to a full stop.

Brake override operation conditions | • If any of the following conditions are met with the accelerator pedal and the brake pedal depressed together for 0.9 s or more, the PCM adjusts the throttle valve opening angle so that the engine speed is approx. 1,100rpm. While driving vehicle ― Accelerator pedal opening angle: 6.25% or more from fully-closed ― No accelerator pedal movement (stuck condition) ― Vehicle speed: 16.1 km/h {10 mph} or more ― In gear ― Engine speed: 1,150 rpm or more
End brake override operation | • To return the throttle to normal operation, the following conditions must be met. ― Accelerator pedal is not depressed ― Accelerator movement is detected ― Brake pedal is not depressed Note • Cycling the key off and back on will also end brake override operation.