DTC U0125: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0293: Lost Communication with Hybrid Vehicle Control System; DTC U1104: Lost Communication with Driving Support ECU [06/2015 - 11/2018]: Description
The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect obstacles in front of the vehicle. Based on this information, the driving support ECU assembly sends pre-collision safety control operation signals. These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect crashes, or between ECUs that perform the pre-collision safety control.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0125 | Lost Communication with Yaw Rate Sensor Module | At a vehicle speed of 36 km/h or more, the driving support ECU assembly does not receive data from the airbag ECU assembly for 0.772 seconds or more. |
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| U0126 | Lost Communication with Steering Angle Sensor Module | At a vehicle speed of 36 km/h or more, the driving support ECU assembly does not receive data from the steering sensor for 3.76 seconds or more. |
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| U0129 | Lost Communication with Brake System Control Module | At a vehicle speed of 36 km/h or more, the driving support ECU assembly does not receive data from the skid control ECU (brake booster with master cylinder assembly) for 5.24 seconds or more. |
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| U0293 | Lost Communication with Hybrid Vehicle Control System | At a vehicle speed of 36 km/h or more, the driving support ECU assembly does not receive data from the EV control ECU for 3.808 seconds or more. |
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| U1104 | Lost Communication with Driving Support ECU | At a vehicle speed of 36 km/h or more, the brake booster assembly (w/ master cylinder) (skid control ECU) or the EV control ECU do not receive data from the driving support ECU for 1.192 seconds or more. |
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