BRAKE OVERRIDE SYSTEM (DRIVE-BY-WIRE CONTROL) [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5]
id0170q3001700
Purpose of Adoption
• Gives priority to the brake operation if a malfunction occurs with the accelerator pedal such as if the accelerator pedal is depressed and does not return. The throttle valve is closed if the brake pedal is depressed while the accelerator pedal is in a depressed condition until the vehicle is safely decelerated and comes to a complete stop.
Service Point
• If either one of the following conditions is met with the brake pedal depressed for the specified period *1 or more while the accelerator pedal is depressed, the PCM adjusts the throttle valve opening angle so that the engine speed is the specified value *2.
<While driving vehicle>
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― Accelerator pedal opening angle: 5% or more from full-close
― Vehicle speed: 10 km/h {6.2 mph} or more
― Engine speed: 875 rpm or more
<While vehicle stopped>
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― Accelerator pedal opening angle: 5% or more from full-close
― Shift lever position: neutral (MTX)
― Selector lever position: N position (ATX)
― Engine speed: 875 rpm or more
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*1:0.6 to 10 seconds corresponding to braking force.
*2:1,200 rpm while vehicle is stopped, 1,100 rpm while vehicle is driven.
• If servicing is implemented in which the brake pedal and accelerator pedal are depressed simultaneously, the brake override system can be stopped according to need.
<Cancel conditions>
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After switching the ignition ON (KOEO), the cancel procedure is implemented when the following conditions are met within 30 seconds.
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― Shift lever position: neutral (MTX)
― Selector lever position: N position (ATX)
― Vehicle speed: 0 km/h {0 mph}
<Releasing procedure>
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1. Depress the brake pedal for 10 s with the accelerator pedal released.
2. Fully depress and fully release the accelerator pedal repeatedly three times with the brake pedal depressed.
3. Release the brake pedal.
<System restore condition>
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By switching the ignition off while the brake override system is canceled, the cancel conditions are reset making the brake override system operable.
Common Inquiry
• If the accelerator pedal and brake pedal are operated simultaneously, acceleration does not occur. If there is a claim from a user concerning drive performance due to the temporary output restriction, explain the contents of the repair order form and give the user appropriate advice.
Other
• Not applicable