Tech Tips
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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Theft deterrent system cannot be set | Security indicator light circuit | |
| ECU power source circuit | ||
| Door courtesy switch circuit | ||
| Engine hood courtesy switch circuit | ||
| Front door lock | ||
| Rear door lock | ||
| Luggage compartment door lock | ||
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Security indicator does not blink when theft deterrent system is set | Security indicator light circuit | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Theft deterrent system can be set even when a door is open | Door courtesy switch circuit | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Theft deterrent system can be set even when the engine hood is open | Engine hood courtesy switch circuit | |
| Engine hood courtesy switch | ||
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Theft deterrent system can be set even when the luggage compartment door is open | Luggage compartment door lock | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Vehicle horns (low pitched, high pitched) do not sound while theft deterrent system is in warning operation | Horn system (Horns do not sound) | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Hazard warning lights do not blink while theft deterrent system is in warning operation | Wire harness or connector | - |
| Turn signal flasher assembly | ||
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Hazard warning lights blink even when theft deterrent system is not set | Wire harness or connector | - |
| Turn signal flasher assembly | ||
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Theft warning siren does not sound when theft deterrent system is in alarm sounding state*1 | Theft warning siren circuit | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Security horn does not sound while theft deterrent system is in alarm sounding state*2 | Security horn circuit | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU RH (Cowl side junction block RH) | - | |
| Intrusion sensor cancel switch (satellite switch) does not operate | Satellite switch circuit |