Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- Use the table below 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.
- Troubleshooting of the theft deterrent system is based on the premise that the door lock control system and the wireless door lock control system are operating normally. Check these systems first before troubleshooting the theft deterrent system.
Theft deterrent system
THEFT DETERRENT SYSTEM PROBLEM SYMPTOMS
| Symptom | Suspected Area | See |
|---|---|---|
| Theft deterrent system cannot be set | Security indicator light circuit | SECURITY INDICATOR LIGHT CIRCUIT |
| ECU power source circuit | ECU POWER SOURCE CIRCUIT | |
| Key reminder buzzer does not sound | KEY REMINDER BUZZER DOES NOT SOUND | |
| DTC B2780 (Key unlock warning switch malfunction) | DTC B2780 PUSH SWITCH / KEY UNLOCK WARNING SWITCH MALFUNCTION | |
| Driver side door key lock and unlock switch circuit | DRIVER SIDE DOOR KEY LOCK AND UNLOCK SWITCH CIRCUIT | |
| Front passenger side door unlock detection switch circuit | FRONT PASSENGER SIDE DOOR UNLOCK DETECTION SWITCH CIRCUIT | |
| Door courtesy switch circuit | DOOR COURTESY SWITCH CIRCUIT | |
| Engine hood courtesy switch circuit | ENGINE HOOD COURTESY SWITCH CIRCUIT | |
| Main body ECU | - | |
| Security indicator does not blink when theft deterrent system is set | Security indicator light circuit | SECURITY INDICATOR LIGHT CIRCUIT |
| Alarm sounding state cannot be canceled when ignition switch is turned ON to OFF 10 times within 15 seconds | Ignition switch circuit | IGNITION SWITCH CIRCUIT |
| Key reminder buzzer does not sound | KEY REMINDER BUZZER DOES NOT SOUND | |
| DTC B2780 (Key unlock warning switch malfunction) | DTC B2780 PUSH SWITCH / KEY UNLOCK WARNING SWITCH MALFUNCTION | |
| Theft deterrent system can be set even when any door is open | Door courtesy switch circuit | DOOR COURTESY SWITCH CIRCUIT |
| Vehicle horns (low pitched, high pitched) do not sound while theft deterrent system is in alarm sounding state | Horn circuit | HORN CIRCUIT |
| Headlights do not flash while theft deterrent system is in alarm sounding state | Headlight signal circuit | HEADLIGHT SIGNAL CIRCUIT |
| Taillights do not flash while theft deterrent system is in alarm sounding state | Taillight circuit | TAIL LIGHT CIRCUIT |
| Hazard warning lights do not flash while theft deterrent system is in alarm sounding state | Hazard warning switch circuit | HAZARD WARNING SWITCH CIRCUIT |
| Room light does not light up while theft deterrent system is in alarm sounding state | Illumination circuit | ILLUMINATION CIRCUIT |
| Security horn does not sound while theft deterrent system is set | Security horn circuit | SECURITY HORN CIRCUIT |
| Glass breakage sensor does not operate* | Glass breakage sensor ECU circuit* | GLASS BREAKAGE SENSOR ECU CIRCUIT |
HINT:
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