THEFT DETERRENT SYSTEM (w/o Smart Entry and Start System) PROBLEM SYMPTOMS TABLE
Tech Tips
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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.
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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 | ||
| Unlock warning switch circuit | ||
| Front door lock assembly | ||
| Rear door lock assembly | ||
| Back door lock assembly | ||
| Door courtesy switch circuit | ||
| Back door lock assembly (Back door courtesy switch) | ||
| Engine hood 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 (driver side junction block assembly) | ||
| Security indicator does not blink when theft deterrent system is set | Security indicator light circuit | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (driver side junction block assembly) | ||
| Alarm sounding state cannot be canceled when ignition switch is turned to ON | Ignition switch circuit | |
| Unlock warning switch circuit | ||
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (driver side junction block assembly) | ||
| Theft deterrent system can be set even when door is open | Door courtesy switch circuit | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (driver side junction block assembly) | ||
| Theft deterrent system can be set even when engine hood is open. | Engine hood courtesy switch circuit | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (driver side junction block assembly) | ||
| Vehicle horns (low pitched, high pitched) do not sound while theft deterrent system is in warning operation | Horn circuit | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (driver side junction block assembly) | ||
| Hazard warning lights do not flash 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 (driver side junction block assembly) | ||
| Security horn does not sound while theft deterrent system is in warning operation | Security horn circuit | |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (driver side junction block assembly) | ||
| Hazard warning lights flash 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 (driver side junction block assembly) |