DESCRIPTION The trailer
brake control ECU (brake control with bracket relay) receives signals
from the skid control ECU (brake actuator assembly), yaw rate and
acceleration sensor (airbag sensor assembly) and combination meter
assembly via CAN communication. |
DTC No. | Detection Item |
INF Code | DTC Detection Condition |
Trouble Area | | U0073 |
Control Module Communication Bus "A" Off |
- | Bus off condition continues for 1 second or more |
CAN communication system | |
U0123 | Lost Communication with Yaw Rate Sensor Module |
- | With
a vehicle speed of 6 km/h (4 mph), the system is continuously unable to
receive data from the yaw rate and acceleration sensor (airbag sensor
assembly) for 1 second or more |
- CAN communication system
- Trailer brake control ECU (Brake control with bracket relay)
- Yaw rate and acceleration sensor (airbag sensor assembly)
| | U0129 |
Lost Communication with Brake System Control Module |
- | The
skid control ECU (brake actuator assembly) is continuously unable to
receive data from the brake actuator assembly (skid control ECU) for 1
second or more. |
- CAN communication system
- Trailer brake control ECU (Brake control with bracket relay)
- Skid control ECU (Brake actuator assembly)
| | U0155 |
Lost Communication With Instrument Panel Cluster (IPC) Control Module |
- | With
a vehicle speed of 6 km/h (4 mph), the system is continuously unable to
receive data from the combination meter assembly for 5 seconds or more |
- CAN communication system
- Trailer brake control ECU (Brake control with bracket relay)
- Combination meter assembly
| PROCEDURE
(a) Clear the DTCs. Click here
 (b) Turn the ignition switch off.
(c) Turn the ignition switch to ON. (d) Check if the same DTC is output.
Click here HINT: If
a CAN communication malfunction DTC and a related sensor malfunction
DTC are output at the same time, the CAN communication malfunction must
be repaired before troubleshooting the sensor malfunction DTC.
|
Result | Proceed to | |
CAN communication system DTCs are output. |
A | | DTCs are not output. |
B |
| A |
 | INSPECT CAN COMMUNICATION SYSTEM |
| B |
| USE SIMULATION METHOD TO CHECK | | 
