DTC U0077-88: Control Module Communication Bus "E" Off Bus Off; DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message [02/2024 - ]: Description
The trailer brake control ECU (brake control with bracket relay) receives signals from the skid control ECU (brake actuator assembly) via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| U0077-88 | Control Module Communication Bus "E" Off Bus Off | Bus off condition continues for 1 second or more | CAN communication system | Trailer Brake Controller | B |
| U1170-87 | Lost Communication with Brake System Control Module (ch2) Missing Message | The trailer brake control ECU (brake control with bracket relay) is continuously unable to receive data from the No. 2 skid control ECU (brake actuator assembly) for 1 second or more. |
|
Trailer Brake Controller | B |