| 
                           Last Modified: 05-08-2025 | 
                        6.11:8.1.0  | 
                        
                           Doc ID: RM100000001FAHV | 
                      
                     
                        | 
                           Model Year Start: 2019 | 
                        
                           Model: RAV4 | 
                        
                           Prod Date Range: [11/2018 -                    
                                       ] | 
                      
                     
                        | 
                           Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: C1AB4; Open in Outer Mirror Indicator(Master); 2019 - 2025 MY RAV4 RAV4 HV [11/2018 -        ] | 
                      
                   
                  
                     
                        
                           | 
                               DTC 
                            | 
                           
                               C1AB4 
                            | 
                           
                               Open in Outer Mirror Indicator(Master) 
                            | 
                         
                     
                   
                   
                  DESCRIPTION
                  This DTC is stored when the blind spot monitor sensor LH detects an open in the outer rear view mirror indicator LH. 
                  
                     
                        
                        
                        
                        
                     
                     
                        
                           | 
                               DTC No. 
                            | 
                           
                               Detection Item 
                            | 
                           
                               DTC Detection Condition 
                            | 
                           
                               Trouble Area 
                            | 
                         
                     
                     
                        
                           | 
                               C1AB4 
                            | 
                           
                               Open in Outer Mirror Indicator(Master) 
                            | 
                           
                              
                                 Both of the following conditions are met:
                                 
                                    - 
The blind spot monitor system is on
 
                                  
                               
                              
                                 
                                    - 
The current flowing to the indicator is below a specified value when indicator operation voltage is being sent to the indicator
 
                                  
                               
                            | 
                           
                              
                                 
                                    - 
Outer mirror LH (outer rear view mirror indicator LH)
 
                                    - 
Outer rear view mirror assembly LH
 
                                    - 
Harness or connector
 
                                    - 
Blind spot monitor sensor LH
 
                                  
                               
                            | 
                         
                     
                   
                   
                  WIRING DIAGRAM
                   
                   
                  CAUTION / NOTICE / HINT
                  NOTICE: 
                  When checking for DTCs, make sure that the blind spot monitor system is turned on. 
                   
                  PROCEDURE
                   
                  
                  (a) Turn the ignition switch off. 
                  (b) Turn the ignition switch to ON. 
                  (c) Recheck for DTCs and check if the same DTC is output again. 
                  Click here
                        
                           
                               
                           
                        
                     
                   
                  Body Electrical > Blind Spot Monitor Master > Trouble Codes
                  OK:  
                  No DTCs are output. 
                  
                  
                     
                        
                           
                              
                                 | 
NG
 | 
                               
                              
                                 
                                     
                                  | 
                               
                            
                         | 
                      
                   
                   
                  
                     
                        
                           | 
                               2.  
                            | 
                           
                               CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY LH - BLIND SPOT MONITOR SENSOR LH AND BODY GROUND) 
                            | 
                         
                     
                   
                  (a) Disconnect the Q1 blind spot monitor sensor LH connector. 
                  (b) Disconnect the J13*1 or J14*2 outer rear view mirror assembly LH connector. 
                  *1: w/ Foot Light 
                  *2: w/o Foot Light 
                  (c) Measure the resistance according to the value(s) in the table below. 
                  Standard Resistance:  
                  
                     
                        
                        
                        
                     
                     
                        
                           | 
                               Tester Connection 
                            | 
                           
                               Condition 
                            | 
                           
                               Specified Condition 
                            | 
                         
                     
                     
                        
                           | 
                               Q1-4 (OMIL) - J13-13 (BSL+)*1 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               Q1-4 (OMIL) - J14-1 (BSL+)*2 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               J13-10 (-) - Body ground*1 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               J14-8 (-) - Body ground*2 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                     
                   
                  *1: w/ Foot Light 
                  *2: w/o Foot Light 
                  
                     
                        
                           | NG | 
                           
                               
                            | 
                           
                               REPAIR OR REPLACE HARNESS OR CONNECTOR 
                            | 
                         
                     
                   
                  
                     
                        
                           
                              
                                 | 
OK
 | 
                               
                              
                                 
                                     
                                  | 
                               
                            
                         | 
                      
                   
                   
                  
                     
                        
                           | 
                               3.  
                            | 
                           
                               INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH 
                            | 
                         
                     
                   
                  (a) Disconnect the IND1 outer mirror LH (outer rear view mirror indicator LH) connector. 
                  (b) Measure the resistance according to the value(s) in the table below. 
                  Standard Resistance:  
                  
                     
                        
                        
                        
                     
                     
                        
                           | 
                               Tester Connection 
                            | 
                           
                               Condition 
                            | 
                           
                               Specified Condition 
                            | 
                         
                     
                     
                        
                           | 
                               J13-13 (BSL+) - IND1-2 (+)*1 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               J14-1 (BSL+) - IND1-2 (+)*2 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               J13-10 (-) - IND1-1 (-)*1 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                        
                           | 
                               J14-8 (-) - IND1-1 (-)*2 
                            | 
                           
                               Always 
                            | 
                           
                               Below 1 Ω 
                            | 
                         
                     
                   
                  *1: w/ Foot Light 
                  *2: w/o Foot Light 
                  
                  
                     
                        
                           
                              
                                 | 
OK
 | 
                               
                              
                                 
                                     
                                  | 
                               
                            
                         | 
                      
                   
                   
                  
                     
                        
                           | 
                               4.  
                            | 
                           
                               INSPECT OUTER MIRROR  LH (OUTER REAR VIEW MIRROR INDICATOR LH) 
                            | 
                         
                     
                   
                  (a) Remove the outer mirror LH (outer rear view mirror indicator LH). 
                  Click here
                        
                           
                               
                           
                        
                     
                   
                  (b) Inspect the outer mirror LH (outer rear view mirror indicator LH). 
                  Click here
                        
                           
                               
                           
                        
                     
                   
                  
                  
                  
                |