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                           Last Modified: 05-08-2025 | 
                        6.11:8.1.0  | 
                        
                           Doc ID: RM100000001EAPQ | 
                      
                     
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                           Model Year Start: 2019 | 
                        
                           Model: RAV4 HV | 
                        
                           Prod Date Range: [11/2018 - 02/2019] | 
                      
                     
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                           Title: NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): B1003; ECU Malfunction; 2019 MY RAV4 HV [11/2018 - 02/2019] | 
                      
                   
                  
                     
                        
                           | 
                               DTC 
                            | 
                           
                               B1003 
                            | 
                           
                               ECU Malfunction 
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                  DESCRIPTION
                  
                     
                        
                        
                        
                        
                        
                     
                     
                        
                           | 
                               DTC No. 
                            | 
                           
                               Detection Item 
                            | 
                           
                               DTC Detection Condition 
                            | 
                           
                               Trouble Area 
                            | 
                           
                               DTC Output from 
                            | 
                         
                     
                     
                        
                           | 
                               B1003 
                            | 
                           
                               ECU Malfunction 
                            | 
                           
                               A malfunction in the non-volatile storage of the central gateway ECU (network gateway ECU) is detected. 
                            | 
                           
                               Central gateway ECU (network gateway ECU) 
                            | 
                           
                               Central gateway ECU (network gateway ECU) 
                            | 
                         
                     
                   
                   
                  PROCEDURE
                   
                  
                  (a) Connect the Techstream to the DLC3. 
                  (b) Turn the power switch on (IG). 
                  (c) Turn the Techstream on. 
                  (d) Enter the following menus: Body Electrical / Central Gateway / Trouble Codes. 
                  Body Electrical > Central Gateway > Trouble Codes
                  
                     
                        
                           | 
                               Result 
                            | 
                           
                               Proceed to 
                            | 
                         
                     
                     
                        
                           | 
                               DTC B1003 is not output from the central gateway ECU (network gateway ECU) 
                            | 
                           
                               A 
                            | 
                         
                        
                           | 
                               DTC B1003 is output from the central gateway ECU (network gateway ECU) 
                            | 
                           
                               B 
                            | 
                         
                     
                   
                  
                  
                  
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