Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Use PROBLEM SYMPTOMS TABLE to help determine the cause of the problem symptom. 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.
Theft Deterrent System
PROBLEM SYMPTOMS TABLE
| Symptom | Suspected area | Reference | ||||
|---|---|---|---|---|---|---|
| Theft deterrent system cannot be set. | Engine hood courtesy switch circuit | Engine Hood Courtesy Switch Circuit | ||||
| Security indicator light circuit | Security Indicator Light Circuit | |||||
| ECU power source circuit | ECU Power Source Circuit | |||||
| Unlock warning switch circuit | Unlock Warning Switch Circuit | |||||
| Back door unlock detection switch circuit(1) | Back Door UNLOCK Detection Switch Circuit | |||||
| Luggage compartment door key cylinder switch circuit(2) | - | |||||
| Theft warning ECU assembly | - | |||||
| Security indicator light does not blink when theft deterrent system is set. | Security indicator light circuit | Security Indicator Light Circuit | ||||
| Theft warning ECU assembly | - | |||||
| Theft deterrent system can be set, but does not operate when engine hood is opened. | Engine hood courtesy switch circuit | Engine Hood Courtesy Switch Circuit | ||||
| Theft warning ECU assembly | - | |||||
| Theft deterrent system can be set, but is not canceled when ignition switch is turned to ACC or ON position. | Ignition switch circuit | Ignition Switch Circuit | ||||
| Theft warning ECU assembly | - | |||||
| Theft deterrent system can be set, but still operates when back door is opened with key. | Back door unlock detection switch circuit | Back Door UNLOCK Detection Switch Circuit | ||||
| Theft warning ECU assembly | - | |||||
| Theft deterrent system can be set, but still operates when luggage compartment door is opened with key(2). | Luggage compartment door key cylinder switch circuit | Luggage Compartment Door Key Cylinder Switch Circuit | ||||
| Theft warning ECU assembly | - | |||||
| While theft deterrent system is in warning operation, horns do not sound. | Security horn circuit | Security Horn Circuit | ||||
| Theft warning ECU assembly | - | |||||
| Horns sound even when theft deterrent system is not set. | Security Horn Circuit | Security Horn Circuit | ||||
| Theft warning ECU assembly | - | |||||
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