DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U1100: Lost Communication with Seat Belt Control ECU: Description
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU sends pre-collision control operation signals.
These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect collisions, or between ECUs that perform the pre-collision control.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0122 | When the engine switch is on (IG), a communication error between the skid control ECU and the driving support ECU is detected for approx. 1 second. |
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| U0123 | When the engine switch is on (IG), a communication error between the yaw rate sensor and the driving support ECU is detected for approx. 1 second. |
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| U0126 | When the engine switch is on (IG), a communication error between the steering sensor and the driving support ECU is detected for approx. 1 second. |
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| U0140 | While engine switch is on (IG), communication stop between main body ECU and seat belt control ECU continues for 1 second or more. |
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| U0151 | While engine switch is on (IG), communication stop between air bag ECU and seat belt control ECU continues for 1 second or more. |
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| U1100 | When the engine switch is on (IG), a communication error between the seat belt control ECU and the driving support ECU is detected for approx. 1 second. |
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