DTC U0073/51: Control Module Communication Bus OFF; DTC U0124/55: Lost Communication with Lateral Acceleration Sensor Module; DTC U0129/52: Lost Communication with Brake System Control Module; DTC U0293/54: Lost Communication with HV ECU [01/2017 - 09/2018]: Description
The parking brake ECU assembly communicates with the skid control ECU assembly, deceleration sensor (yaw rate sensor) and hybrid vehicle control ECU assembly via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | Note |
|---|---|---|---|---|---|
| U0073/51 | Control Module Communication Bus OFF | With the power switch on (IG), the bus is off (communication with other ECUs is not possible) for 2 seconds. | CAN communication system | Yes | An electric parking brake system malfunction is displayed on the multi-information display. |
| U0124/55 | Lost Communication with Lateral Acceleration Sensor Module | With the power switch on (IG), the parking brake ECU assembly cannot receive signals from the deceleration sensor (yaw rate sensor) for approximately 1 second. |
|
Yes | An electric parking brake system malfunction is displayed on the multi-information display. |
| U0129/52 | Lost Communication with Brake System Control Module | With the power switch on (IG), the parking brake ECU assembly cannot receive signals from the skid control ECU assembly for approximately 1 second or 10 seconds (malfunction duration differs depending on the signal). |
|
Yes | An electric parking brake system malfunction is displayed on the multi-information display. |
| U0293/54 | Lost Communication with HV ECU | With the power switch on (IG) and the vehicle being driven at 15 km/h (9 mph) or more, the parking brake ECU assembly cannot receive signals from the hybrid vehicle control ECU assembly for approximately 1 second or 10 seconds (malfunction duration differs depending on the signal). |
|
Yes | An electric parking brake system malfunction is displayed on the multi-information display. |