DTC C13B4: EPB Switch Malfunction [02/2017 - ]: Description
When the electric parking brake switch is pulled, a lock request signal is sent from the skid control ECU (brake actuator assembly) to the parking brake actuator assembly. When the electric parking brake switch is pushed, a release request signal is sent from the skid control ECU (brake actuator assembly) to the parking brake actuator assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | Note |
|---|---|---|---|---|---|
| C13B4 | EPB Switch Malfunction |
|
|
DTC stored | An electric parking brake system malfunction is displayed on the multi-information display. |
DTC DETECTION CONDITIONS
| Vehicle Condition | |||||
|---|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | ||
| Diagnosis Condition | - | - | - | - | - |
| Malfunction Status | Parking brake switch power supply voltage from the +BS terminal less than 7 V | ◦ | - | - | - |
| Parking brake switch open circuit is detected | - | ◦ | - | - | |
| Parking brake switch short circuit is detected | - | - | ◦ | - | |
| Parking brake switch stuck malfunction | - | - | - | ◦ | |
| Detection Time | 1 second or more | 0.3 seconds or more | 0.3 seconds or more | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | 1 trip | |