| 
                           Last Modified: 05-08-2025 | 
                        6.11:8.1.0  | 
                        
                           Doc ID: RM1000000021J2F | 
                      
                     
                        | 
                           Model Year Start: 2022 | 
                        
                           Model: RAV4 HV | 
                        
                           Prod Date Range: [12/2021 -                    
                                       ] | 
                      
                     
                        | 
                           Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for HV Model): U010487,U012287,U029387; Lost Communication with Cruise Control Module Missing Message; 2022 - 2025 MY RAV4 HV [12/2021 -        ] | 
                      
                   
                  
                     
                        
                           | 
                               DTC 
                            | 
                           
                               U010487 
                            | 
                           
                               Lost Communication with Cruise Control Module Missing Message 
                            | 
                         
                     
                   
                  
                     
                        
                           | 
                               DTC 
                            | 
                           
                               U012287 
                            | 
                           
                               Lost Communication with Vehicle Dynamics Control Module Missing Message 
                            | 
                         
                     
                   
                  
                     
                        
                           | 
                               DTC 
                            | 
                           
                               U029387 
                            | 
                           
                               Lost Communication with Hybrid Powertrain Control Module Missing Message 
                            | 
                         
                     
                   
                   
                  DESCRIPTION
                  The hybrid vehicle control ECU assembly communicates with each sensor and ECU via CAN communication. 
                  If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored. 
                  
                     
                        
                        
                        
                        
                        
                        
                     
                     
                        
                           | 
                               DTC No. 
                            | 
                           
                               Detection Item 
                            | 
                           
                               DTC Detection Condition 
                            | 
                           
                               Trouble Area 
                            | 
                           
                               MIL 
                            | 
                           
                               DTC Output from 
                            | 
                         
                     
                     
                        
                           | 
                               U010487 
                            | 
                           
                               Lost Communication with Cruise Control Module Missing Message 
                            | 
                           
                               When the ignition switch is ON and the dynamic radar cruise control system is operating, a communication malfunction between the millimeter wave radar sensor assembly and hybrid vehicle control ECU assembly is detected for approximately 1 second or more. 
                            | 
                           
                               CAN communication system 
                            | 
                           
                               Does not come on 
                            | 
                           
                               Radar Cruise1 
                            | 
                         
                        
                           | 
                               U012287 
                            | 
                           
                               Lost Communication with Vehicle Dynamics Control Module Missing Message 
                            | 
                           
                               When the ignition switch is ON and the dynamic radar cruise control system is operating, a communication malfunction between the No. 2 skid control ECU (brake actuator assembly) and hybrid vehicle control ECU assembly is detected for approximately 2.6 seconds or more. 
                            | 
                           
                               CAN communication system 
                            | 
                           
                               Does not come on 
                            | 
                           
                               Radar Cruise1 
                            | 
                         
                        
                           | 
                               U029387 
                            | 
                           
                               Lost Communication with Hybrid Powertrain Control Module Missing Message 
                            | 
                           
                               When the dynamic radar cruise control system is operating, a communication malfunction between the No. 2 skid control ECU (brake actuator assembly) and hybrid vehicle control ECU assembly is detected for approximately 1 second or more. 
                            | 
                           
                               CAN communication system 
                            | 
                           
                               Does not come on 
                            | 
                           
                               Radar Cruise1 
                            | 
                         
                     
                   
                   
                  PROCEDURE
                   
                  
                     
                        
                           | 
                               1.  
                            | 
                           
                               CHECK FOR DTCs (Radar Cruise1) 
                            | 
                         
                     
                   
                  (a) Clear the DTCs. 
                  Click here
                        
                           
                               
                           
                        
                     
                   
                  Powertrain > Radar Cruise1 > Clear DTCs
                  (b) Make sure that the DTC detection conditions are met. 
                  HINT: 
                  If the detection conditions are not met, the system cannot detect the malfunction. 
                  (c) Check for DTCs. 
                  Click here
                        
                           
                               
                           
                        
                     
                   
                  Powertrain > Radar Cruise1 > Trouble Codes
                  
                     
                        
                           | 
                               Result 
                            | 
                           
                               Proceed to 
                            | 
                         
                     
                     
                        
                           | 
                               DTC U010487, U012287 and U029387 are not output 
                            | 
                           
                               A 
                            | 
                         
                        
                           | 
                               DTC U010487, U012287 or U029387 is output 
                            | 
                           
                               B 
                            | 
                         
                     
                   
                  
                  
                  
                |