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                        | Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM100000001SH5O |  
                        | Model Year Start: 2021 | Model: Camry | Prod Date Range: [10/2020 -                    
                                       ] |  
                        | Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: U031851; Software Incompatibility with Brake System Control Module Not Programmed; 2021 - 2024 MY Camry [10/2020 -        ] |  
                     
                        
                           | DTC | U031851 | Software Incompatibility with Brake System Control Module Not Programmed |  DESCRIPTIONIf the forward recognition camera cannot verify the vehicle information sent from the skid control ECU (brake actuator assembly), the forward recognition camera stores DTC U031851. 
                     
                        
                        
                        
                        
                        
                     
                     
                        
                           | DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |  
                           | U031851 | Software Incompatibility with Brake System Control Module Not Programmed | The vehicle information sent from the skid control ECU (brake actuator assembly) cannot be verified by the forward recognition camera. | Forward recognition camera | Radar Cruise2 |  CAUTION / NOTICE / HINT
                     NOTICE: 
                        
When replacing the forward recognition camera, replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.
When the forward recognition camera is replaced with a new one or the windshield glass is replaced or removed/installed, make sure to read Before Starting Adjustment, then perform optical axis alignment for the forward recognition camera and clear the vehicle control history for each system.
HINT: Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment. One Time Recognition: Click here
                                 
                                    
                                       ![2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA: TARGET ADJUSTMENT(ONE TIME RECOGNITION)](/t3Portal/stylegraphics/info.gif)  Sequential Recognition: Click here
                                 
                                    
                                       ![2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA: TARGET ADJUSTMENT(SEQUENTIAL RECOGNITION)](/t3Portal/stylegraphics/info.gif)  Driving Adjustment: Click here
                                 
                                    
                                       ![2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA: DRIVING ADJUSTMENT](/t3Portal/stylegraphics/info.gif)  PROCEDURE
                     
                        
                           | 1.  | REPLACE FRONT CAMERA SYSTEM |  (a) Replace the forward recognition camera with a new one. Click here
                        
                           
                              ![2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA: REMOVAL](/t3Portal/stylegraphics/info.gif)  (b) Perform forward recognition camera adjustment. HINT: Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment. One Time Recognition: Click here
                        
                           
                              ![2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA: TARGET ADJUSTMENT(ONE TIME RECOGNITION)](/t3Portal/stylegraphics/info.gif)  Sequential Recognition: Click here
                        
                           
                              ![2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA: TARGET ADJUSTMENT(SEQUENTIAL RECOGNITION)](/t3Portal/stylegraphics/info.gif)  Driving Adjustment: Click here
                        
                           
                              ![2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA: DRIVING ADJUSTMENT](/t3Portal/stylegraphics/info.gif)  
                     
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                           | 2.  | CLEAR DTC (Radar Cruise2) |  (a) Clear the DTCs. Powertrain > Radar Cruise2 > Clear DTCs
                     
                        
                           | NEXT |   | END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |  |