DTC C13A9: Brake System Malfunction [10/2020 - 10/2023]: Description

The parking brake ECU assembly receives the wheel speed information of each wheel from the skid control ECU assembly via CAN communication.

This DTC is stored when a malfunction occurs in the skid control ECU assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
C13A9	Brake System Malfunction	Diagnosis Condition: Power switch on (IG) Malfunction Status: All speed sensor malfunction signals input from skid control ECU assembly Malfunction Duration: Approximately 0.3 seconds	Skid control ECU assembly Parking brake ECU assembly	Yes	An electric parking brake system malfunction is displayed on the multi-information display.