DTC C13B4: EPB Switch Malfunction [04/2018 - 08/2021]: Description
WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
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 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | Parking brake switch open or short circuit is detected for 1 second or more | ◦ | - |
| Parking brake switch stuck malfunction | - | ◦ | |
| Detection Time | 1 second or more | - | |
| Number of Trips | 1 trip | 1 trip | |