DTC U1119: Lost Communication with Object Recognition ECU (CAN); DTC U1119: Lost Communication with Object Recognition ECU (Serial); DTC U1120: Lost Communication with Object Recognition Camera [10/2014 - ]: Description
The driving support ECU uses the front millimeter wave radar sensor, driver monitor camera and object recognition camera to detect obstacles in front of and behind the vehicle, and detect the direction that the driver's head is facing. Based on this information, the driving support ECU sends pre-collision control operation signals.
When a serial communication stop between the object recognition ECU and object recognition camera is detected, DTCs U1119 and U1120 are output.
When a CAN communication stop between the object recognition ECU and driving support ECU is detected, DTC U1119 is output.
This DTC is also output from the dynamic radar cruise control system.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1119 | While power switch is ON (IG), serial communication stop between object recognition ECU and object recognition camera continues for 1 second or more |
|
| U1119 | While power switch is ON (IG), communication stop between object recognition ECU and driving support ECU continues for 1 second or more |
|
| U1120 | While power switch is ON (IG), serial communication stop between object recognition camera and object recognition ECU continues for 1 second or more |
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