Problem Symptoms Table [11/2023 - ]
NOTE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
for HV Model: Refer to REGISTRATION [11/2023 - ]
for Gasoline Model: Refer to REGISTRATION [11/2023 - ]
HINT:
- Troubleshooting of the theft deterrent system is based on the premise that the power door lock control system and the wireless door lock control system are operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that the power door lock control system and the wireless door lock control system are operating normally.
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
THEFT DETERRENT SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| The theft deterrent system cannot be set or canceled | Proceed to "Security Indicator Light does not Blink"*1 | Refer to Security Indicator Light Does not Blink [11/2023 - ] |
| Proceed to "Security Indicator Light does not Blink"*2 | Refer to Security Indicator Light Does not Blink [11/2023 - ] | |
| IG signal circuit | Refer to IG Signal Circuit [11/2023 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [11/2023 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [11/2023 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [11/2023 - ] | |
| Back door courtesy switch circuit | Refer to Back Door Courtesy Switch Circuit [11/2023 - ] | |
| Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [11/2023 - ] | |
| Back door opener switch assembly | Refer to INSPECTION [12/2019 - ] | |
| Harness or connector | - | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| After a wireless door lock operation is performed with the back door open, the theft deterrent system is not set when the back door is closed | Proceed to "Security Indicator Light does not Blink"*1 | Refer to Security Indicator Light Does not Blink [11/2023 - ] |
| Proceed to "Security Indicator Light does not Blink"*2 | Refer to Security Indicator Light Does not Blink [11/2023 - ] | |
| IG signal circuit | Refer to IG Signal Circuit [11/2023 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [11/2023 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [11/2023 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [11/2023 - ] | |
| Back door courtesy switch circuit | Refer to Back Door Courtesy Switch Circuit [11/2023 - ] | |
| Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [11/2023 - ] | |
| Back door opener switch assembly | Refer to INSPECTION [12/2019 - ] | |
| Harness or connector | - | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| After a wireless door lock operation is performed with the engine hood open, the theft deterrent system is not set when the engine hood is closed | Proceed to "Security Indicator Light does not Blink"*1 | Refer to Security Indicator Light Does not Blink [11/2023 - ] |
| Proceed to "Security Indicator Light does not Blink"*2 | Refer to Security Indicator Light Does not Blink [11/2023 - ] | |
| IG signal circuit | Refer to IG Signal Circuit [11/2023 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [11/2023 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [11/2023 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [11/2023 - ] | |
| Back door courtesy switch circuit | Refer to Back Door Courtesy Switch Circuit [11/2023 - ] | |
| Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [11/2023 - ] | |
| Back door opener switch assembly | Refer to INSPECTION [12/2019 - ] | |
| Harness or connector | - | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| Security indicator light does not blink when theft deterrent system is set | Proceed to "Security Indicator Light does not Blink"*1 | Refer to Security Indicator Light Does not Blink [11/2023 - ] |
| Proceed to "Security Indicator Light does not Blink"*2 | Refer to Security Indicator Light Does not Blink [11/2023 - ] | |
| The theft deterrent system becomes set by itself | Check customize setting (Door Auto Lock Timer Setting) | Refer to CUSTOMIZE PARAMETERS [11/2023 - ] |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [11/2023 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [11/2023 - ] | |
| Back door courtesy switch circuit | Refer to Back Door Courtesy Switch Circuit [11/2023 - ] | |
| Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [11/2023 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| None of the alarm functions operate or the theft deterrent system can be set even when all necessary conditions are not met | Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [11/2023 - ] |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [11/2023 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [11/2023 - ] | |
| Back door courtesy switch circuit | Refer to Back Door Courtesy Switch Circuit [11/2023 - ] | |
| Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [11/2023 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The theft deterrent system cannot be canceled by turning the ignition switch to ON*3 | Check customize setting (Security Control with Mechanism Key Function) | Refer to CUSTOMIZE PARAMETERS [11/2023 - ] |
| Main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The theft deterrent system cannot be canceled by unlocking doors using the mechanical key*3 | Check customize setting (Security Control with Mechanism Key Function) | Refer to CUSTOMIZE PARAMETERS [11/2023 - ] |
| Power door lock control system | Refer to OPERATION CHECK [11/2023 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The doors are not forcibly locked when the vehicle is in the alarm sounding state | Smart Key System (for Entry Function) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Wireless door lock control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [11/2023 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The vehicle does not enter the alarm sounding state when the battery is reconnected while the vehicle is in the armed state | Check operation of the security indicator light | Refer to SYSTEM DESCRIPTION [11/2023 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The vehicle does not enter the alarm sounding state when the back door is opened while the vehicle is in the armed state | Check operation of the security indicator light | Refer to SYSTEM DESCRIPTION [11/2023 - ] |
| Back door courtesy switch circuit | Refer to Back Door Courtesy Switch Circuit [11/2023 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The vehicle does not enter the alarm sounding state when the engine hood is opened while the vehicle is in the armed state | Check operation of the security indicator light | Refer to SYSTEM DESCRIPTION [11/2023 - ] |
| Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [11/2023 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The vehicle does not enter the alarm sounding state when the doors are unlocked while the vehicle is in the armed state | Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [11/2023 - ] |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [11/2023 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [11/2023 - ] | |
| Back door courtesy switch circuit | Refer to Back Door Courtesy Switch Circuit [11/2023 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The security horn assembly does not operate when the vehicle is in the alarm sounding state | Security horn circuit | Refer to Security Horn Circuit [11/2023 - ] |
| The vehicle horn does not operate when the vehicle is in the alarm sounding state | Horn circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| The hazard warning lights do not operate when the vehicle is in the alarm sounding state | Lighting system (EXT) | Refer to Horn Circuit [11/2023 - ] |
| Meter/gauge system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The taillights do not operate when the vehicle is in the alarm sounding state | Taillight relay circuit | Refer to Taillight Relay Circuit [11/2023 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The interior lights do not operate when the vehicle is in the alarm sounding state | Interior light circuit | Refer to Interior Light Circuit [11/2023 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] | |
| The low beams do not operate when the vehicle is in the alarm sounding state | Lighting System | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU) | Refer to REMOVAL [11/2023 - ] |
- *1: for HV Model
- *2: for Gasoline Model
- *3: When "Security Control with Mechanism Key Function" is set to "Enable" in the customization setting using the GTS