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                           Last Modified: 05-08-2025 | 
                        6.11:8.1.0  | 
                        
                           Doc ID: RM100000001E7IU | 
                      
                     
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                           Model Year Start: 2019 | 
                        
                           Model: RAV4 | 
                        
                           Prod Date Range: [11/2018 - 08/2020] | 
                      
                     
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                           Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Voice Guidance does not Function; 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020] | 
                      
                   
                  
                     
                        
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                               Voice Guidance does not Function 
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                  WIRING DIAGRAM
                   
                   
                  PROCEDURE
                   
                  
                     
                        
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                               1.  
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                               CHECK VOICE GUIDANCE SETTING 
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                  (a) Check that the voice guidance setting is not off. 
                  OK:  
                  Voice guidance setting is not off. 
                  
                     
                        
                           | NG | 
                           
                               
                            | 
                           
                               CHANGE VOICE GUIDANCE SETTING TO ON 
                            | 
                         
                     
                   
                  
                     
                        
                           
                              
                                 | 
OK
 | 
                               
                              
                                 
                                     
                                  | 
                               
                            
                         | 
                      
                   
                   
                  
                     
                        
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                               2.  
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                               CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU) 
                            | 
                         
                     
                   
                  
                  (a) Disconnect the G1 radio and display receiver assembly connector. 
                  (b) Disconnect the G15*1 or H7*2 navigation ECU connector. 
                  (c) Measure the resistance according to the value(s) in the table below. 
                  Standard Resistance:  
                  
                     
                        
                        
                        
                     
                     
                        
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                               Tester Connection 
                            | 
                           
                               Condition 
                            | 
                           
                               Specified Condition 
                            | 
                         
                     
                     
                        
                           | 
                               G1-22 (SI+) - G15-6 (VOI+)*1 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               G1-22 (SI+) - H7-6 (VOI+)*2 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               G1-23 (SI-) - G15-7 (VOI-)*1 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               G1-23 (SI-) - H7-7 (VOI-)*2 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               G1-22 (SI+) - Body ground 
                            | 
                           
                               Always 
                            | 
                           
                               10 kΩ or higher 
                            | 
                         
                        
                           | 
                               G1-23 (SI-) - Body ground 
                            | 
                           
                               Always 
                            | 
                           
                               10 kΩ or higher 
                            | 
                         
                        
                           | 
                               G15-8 (SLD1) - Body ground*1 
                            | 
                           
                               Always 
                            | 
                           
                               10 kΩ or higher 
                            | 
                         
                        
                           | 
                               H7-8 (SLD1) - Body ground*2 
                            | 
                           
                               Always 
                            | 
                           
                               10 kΩ or higher 
                            | 
                         
                     
                   
                  
                  
                     
                        
                           | NG | 
                           
                               
                            | 
                           
                               REPAIR OR REPLACE HARNESS OR CONNECTOR 
                            | 
                         
                     
                   
                  
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