DESCRIPTION The skid
control ECU (brake actuator assembly) receives signals from the ECM,
steering angle sensor (spiral with sensor cable sub-assembly), yaw rate
and acceleration sensor (airbag sensor assembly) and 4WD control ECU via
CAN communication. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area | |
U0073 | Control Module Communication Bus OFF |
The +BS terminal voltage is between 9.6 and a 16.5 V and a bus OFF state occurs for 0.8 seconds or more. |
CAN communication system | |
U0100 | Lost Communication with ECM / PCM |
The
+BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6
km/h (4 mph) or more, and signals cannot be sent to the ECM for 1 second
or more. |
- CAN communication system
- Skid control ECU (brake actuator assembly)
- ECM
| | U0114 |
Lost Communication with 4WD Control ECU |
The
+BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6
km/h (4 mph) or more, and signals from the 4WD control ECU cannot be
received for 1 second or more. |
- CAN communication system
- Skid control ECU (brake actuator assembly)
- 4WD control ECU
| | U0123 |
Lost Communication with Yaw Rate Sensor Module |
The
+BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6
km/h (4 mph) or more, and signals from the yaw rate and acceleration
sensor cannot be received for 1 second or more. |
- CAN communication system
- Skid control ECU (brake actuator assembly)
- Yaw rate and acceleration sensor (airbag sensor assembly)
| | U0126 |
Lost Communication with Steering Angle Sensor Module |
The
+BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6
km/h (4 mph) or more, and signals from the steering angle sensor cannot
be received for 1 second or more. |
- CAN communication system
- Skid control ECU (brake actuator assembly)
- Steering angle sensor (spiral with sensor cable sub-assembly)
| PROCEDURE
| 1. |
CHECK DTC OUTPUT (HEALTH CHECK) | (a) Clear the DTCs.
Click here  (b) Turn the ignition switch off.
(c) Turn the ignition switch to ON. (d) Enter the following menus: System Select / Health Check.
(e) Check for DTCs. |
Result | Proceed to | |
DTCs for related systems are output together with DTC U0073, U0100, U0114, U0123 or U0126. |
A | | U0073, U0100, U0114, U0123 or U0126 is output |
B | | DTCs are not output |
C |
| A |
 | GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM) |
| B |
| INSPECT CAN COMMUNICATION SYSTEM |
| C |
| USE SIMULATION METHOD TO CHECK | |
