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                        | Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM10000000135F7 |  
                        | Model Year Start: 2018 | Model: Camry | Prod Date Range: [03/2017 -                    
                                       ] |  
                        | Title: DOOR LOCK: KEY REMINDER WARNING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2018 - 2024 MY Camry [03/2017 -        ] |  
                     
                        
                           | HOW TO PROCEED WITH TROUBLESHOOTING |  CAUTION / NOTICE / HINT
                     HINT: 
                        
Use the following procedure to troubleshoot the key reminder warning system.
*: Use the Techstream.
 PROCEDURE
                     
                        
                           | 1.  | VEHICLE BROUGHT TO WORKSHOP |  
                     
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                           | 2.  | CUSTOMER PROBLEM ANALYSIS CHECK |  
                     HINT: 
                        
In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
The following 5 items are important points for problem analysis:
                              
                                 
                                 
                              
                              
                                 
                                    | What | Vehicle model, system name |  
                                    | When | Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time |  
                                    | Where | Whether the problem occurs at a specific location |  
                                    | Under what conditions? | Whether the doors were locked or unlocked, whether the ignition switch was ON, whether the engine has started |  
                                    | How did it happen? | Problem symptoms |  
                     
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                                 |   |  |  (a) Measure the battery voltage. Standard Voltage:  11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. (b) Check the fuses and relays. (c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc. 
                     
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                           | 4.  | CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |  (a) Using the Techstream, check for CAN communication system DTCs. Click here
                        
                           
                              ![2018 MY Camry [03/2017 - 06/2017]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)  ![2018 MY Camry [06/2017 - 08/2018]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)  ![2019 MY Camry [08/2018 - 09/2019]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)  ![2020 MY Camry [09/2019 - 03/2020]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)  ![2020 MY Camry [03/2020 - 10/2020]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)  ![2021 MY Camry [10/2020 - 08/2021]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)  ![2022 - 2024 MY Camry [08/2021 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)  
                     
                        
                           | Result | Proceed to |  
                           | CAN DTCs are not output | A |  
                           | CAN DTCs are output | B |  
                     
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                                 | A |  
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                           | 5.  | PROBLEM SYMPTOMS TABLE |  (a) Refer to Problem Symptoms Table. Click here
                        
                           
                              ![2018 - 2024 MY Camry [03/2017 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: PROBLEM SYMPTOMS TABLE](/t3Portal/stylegraphics/info.gif)  
                     
                        
                           | Result | Proceed to |  
                           | Fault is not listed in Problem Symptoms Table | A |  
                           | Fault is listed in Problem Symptoms Table | B |  
                     
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                                 | A |  
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                           | 6.  | OVERALL ANALYSIS AND TROUBLESHOOTING* |  (a) Terminals of ECU Click here
                        
                           
                              ![2018 - 2020 MY Camry [03/2017 - 10/2020]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: TERMINALS OF ECU](/t3Portal/stylegraphics/info.gif)  ![2021 - 2024 MY Camry [10/2020 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: TERMINALS OF ECU](/t3Portal/stylegraphics/info.gif)  (b) Data List / Active Test Click here
                        
                           
                              ![2018 - 2024 MY Camry [03/2017 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: DATA LIST / ACTIVE TEST](/t3Portal/stylegraphics/info.gif)  (c) Operation Check Click here
                        
                           
                              ![2018 - 2024 MY Camry [03/2017 -        ]; DOOR LOCK: KEY REMINDER WARNING SYSTEM: OPERATION CHECK](/t3Portal/stylegraphics/info.gif)  (d) Inspection Click here
                        
                           
                              ![2018 - 2024 MY Camry [03/2017 -        ]; DOOR LOCK: UNLOCK WARNING SWITCH: INSPECTION](/t3Portal/stylegraphics/info.gif)  
                     
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