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                        | Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001BE4B |  
                        | Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - 08/2021] |  
                        | Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) (for HV Model): U1104; Lost Communication with Driving Support ECU; 2019 - 2021 MY Avalon HV [04/2018 - 08/2021] |  
                     
                        
                           | DTC | U1104 | Lost Communication with Driving Support ECU |  DESCRIPTIONThe forward recognition camera communicates with the driving support ECU assembly via CAN communication. If there is a communication error with the driving support ECU assembly, the forward recognition camera store DTC U1104. 
                     
                        
                        
                        
                        
                     
                     
                        
                           | DTC No. | Detection Item | DTC Detection Condition | Trouble Area |  
                           | U1104 | Lost Communication with Driving Support ECU | 2 seconds after the power switch is turned on (IG), a communication error between the driving support ECU assembly and the forward recognition camera is detected for approximately 5 seconds. | Front camera system |  PROCEDURE
                     
                        
                           | 1.  | GO TO FRONT CAMERA SYSTEM (U1104) |  HINT: If DTC U1104 is output by the lane departure alert system (w/ steering control), perform troubleshooting for the front camera system. Click here
                        
                           
                              ![2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; CRUISE CONTROL: FRONT CAMERA SYSTEM (for HV Model): U1104; Lost Communication with Driving Support ECU](/t3Portal/stylegraphics/info.gif)  
                     
                        
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