Electric Parking Brake System AUTO Function Circuit [08/2020 - 12/2021]: Description

The parking brake ECU assembly receives shift position information from the hybrid vehicle control ECU assembly via CAN communication. Also, the parking brake ECU assembly receives wheel speed information and stop light switch information from the skid control ECU (brake booster with master cylinder assembly).

The electric parking brake system AUTO control (shift-linked) function automatically releases the parking brake when the following conditions are met: 1) ignition switch ON, 2) brake pedal depressed, and 3) shift lever moved out of P. Also, when the shift lever is moved to P with the vehicle in this condition, the function automatically locks the parking brake.