DTC C13A9: Brake System Malfunction [01/2019 - 09/2022]: Description
The parking brake ECU (brake actuator assembly) receives the wheel speed signal of each wheel from the skid control ECU (brake booster with master cylinder assembly) via CAN communication.
This DTC is stored when a malfunction occurs in the skid control ECU (brake booster with master cylinder assembly).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | Note |
|---|---|---|---|---|---|
| C13A9 | Brake System Malfunction | Detection conditions (1)
Detection conditions (2)
Detection conditions (3), (4)
|
|
DTC stored | An electric parking brake system malfunction is displayed on the multi-information display. |
| Vehicle Condition | |||||
|---|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | ||
| Diagnosis Condition | Power switch on (IG) | ◦ | ◦ | ◦ | - |
| Vehicle being driven and parking brake not engaged | - | - | - | ◦ | |
| Malfunction Status | Abnormal signal received from all speed sensors from skid control ECU (brake booster with master cylinder assembly) | ◦ | - | - | - |
| Brake system malfunctioning signal received from skid control ECU (brake booster with master cylinder assembly) | - | ◦ | - | - | |
| When parking brake ECU (brake actuator assembly) not outputting parking brake operation request signal, there is parking brake operation signal from skid control ECU (brake booster with master cylinder assembly) | - | - | ◦ | ◦ | |
| Detection Time | Approximately 0.3 seconds | Approximately 0.3 seconds | Approximately 0.3 seconds | Approximately 0.3 seconds | |
| Number of Trips | 1 trip | 1 trip | 1 trip | 1 trip | |