DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0128: Lost Communication With EPB Module; DTC U0130: Lost Communication with Steering Effort Control Module; DTC U0134: Lost Communication with DRS Module; DTC U0151: Lost Communication With Restraints Control Module [12/2017 - 09/2018]: Description
The skid control ECU (brake actuator assembly) receives signals from the ECM, parking brake ECU assembly, steering sensor, acceleration sensor (yaw rate sensor), VGRS ECU (front steering control ECU), DRS ECU (rear steering control ECU) and airbag ECU assembly via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| U0073 | Control Module Communication Bus OFF | Any of the following is detected:
|
CAN communication system | - |
| U0100 | Lost Communication with ECM / PCM | The +BS terminal voltage is between 10 and 17.4 V and the vehicle speed is 15 km/h (9 mph) or more, data cannot be received from the ECM for 2 seconds or more. |
|
- |
| U0124 | Lost Communication with Lateral Acceleration Sensor Module | Either of the following is detected:
|
|
- |
| U0126 | Lost Communication with Steering Angle Sensor Module | Either of the following is detected:
|
|
- |
| U0128 | Lost Communication With EPB Module | When voltage at terminal +BS is 10 to 17.4 V, data cannot be received from parking brake ECU assembly continuously for 1 second or more. |
|
EPB: Electric Parking Brake System |
| U0130 | Lost Communication with Steering Effort Control Module | Either of the following is detected:
|
|
w/ Variable Gear Ratio Steering System |
| U0134 | Lost Communication with DRS Module | Either of the following is detected:
|
|
w/ Variable Gear Ratio Steering System |
| U0151 | Lost Communication With Restraints Control Module | The +BS terminal voltage is between 10 and 17.4 V, signals from the airbag ECU assembly cannot be received for 5 seconds or more. |
|
- |
U0073 DTC DETECTION CONDITIONS
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | - | - | - | - |
| Malfunction Status | A bus OFF state occurs once or more (Sent signals cannot be received.) | ◦ | - | - |
| When the +BS terminal voltage is between 10 and 17.4 V, a delay in receiving data from the acceleration sensor (yaw rate sensor) and steering angle sensor continues | - | ◦ | - | |
| When the +BS terminal voltage is between 10 and 17.4 V, the following occurs: - A delay in receiving data from the acceleration sensor (yaw rate sensor) and steering angle sensor occurs once or more within 5 seconds |
- | - | ◦ | |
| Detection Time | Within 0.1 seconds, 10 times in succession. | 1 second or more. | Occurs 10 times in succession within 60 seconds. | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
U0124 DTC DETECTION CONDITIONS
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | When the +BS terminal voltage is between 10 and 17.4 V and the vehicle speed is 7 km/h (4 mph) or more, data from the acceleration sensor cannot be received | ◦ | - |
| When the +BS terminal voltage is between 10 and 17.4 V, the following occurs: - Data from the acceleration sensor cannot be received once or more within 5 seconds |
- | ◦ | |
| Detection Time | 1 second or more. | 10 times in succession within 60 seconds. | |
| Number of Trips | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
U0126 DTC DETECTION CONDITIONS
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | When the +BS terminal voltage is between 10 and 17.4 V, data from the steering angle sensor cannot be received. | ◦ | - |
| When the +BS terminal voltage is between 10 and 17.4 V, the following occurs: - Data from the steering angle sensor cannot be received once or more within 5 seconds. |
- | ◦ | |
| Detection Time | 1 second or more. | 10 times in succession within 60 seconds. | |
| Number of Trips | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
U0130 DTC DETECTION CONDITIONS
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | When the +BS terminal voltage is between 10 and 17.4 V, data from the VGRS ECU (front steering control ECU) cannot be received. | ◦ | - |
| When the +BS terminal voltage is between 10 and 17.4 V, the following occurs: - The condition that data from the VGRS ECU (front steering control ECU) cannot be received occurs once or more within 5 seconds. |
- | ◦ | |
| Detection Time | 1 second or more. | 10 times in succession within 60 seconds. | |
| Number of Trips | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
U0130 DTC DETECTION CONDITIONS
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | - | - | - |
| Malfunction Status | When the +BS terminal voltage is between 10 and 17.4 V, data from the DRS ECU (rear steering control ECU) cannot be received. | ◦ | - |
| When the +BS terminal voltage is between 10 and 17.4 V, the following occurs: - The condition that data from the DRS ECU (rear steering control ECU) cannot be received occurs once or more within 5 seconds. |
- | ◦ | |
| Detection Time | 1 second or more. | 10 times in succession within 60 seconds. | |
| Number of Trips | 1 trip | 1 trip | |