Problem Symptoms Table
If a normal system code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
ENGINE IMMOBILIZER SYSTEM
SYMPTOM CHART
| Symptom | Suspected area | See |
|---|---|---|
| Hybrid control system does not start | 1. ECU power source circuit | SECURITY HORN ASSEMBLY |
| 2. Unlock warning switch assembly | INSPECTION PROCEDURE | |
| 3. Key (Transponder chip) | Ignition Switch Circuit | |
| 4. Key (Unmatched encryption code) | INSPECTION PROCEDURE | |
| 5. Key (Unmatched key code) | INSPECTION PROCEDURE | |
| 6. Key (No communication) | INSPECTION PROCEDURE | |
| 7. Key (Communication malfunction) | INSPECTION PROCEDURE | |
| 8. Transponder key amplifier (Antenna coil) | INSPECTION PROCEDURE | |
| 9. Transponder key amplifier (No communication) | INSPECTION PROCEDURE | |
| 10. Transponder key amplifier (Communication malfunction) | INSPECTION PROCEDURE | |
| 11. Transponder key ECU assembly (Unlock warning switch ) | INSPECTION PROCEDURE | |
| 12. Transponder key ECU assembly (Antenna coil) | INSPECTION PROCEDURE | |
| 13. Transponder key ECU assembly (No communication) | INSPECTION PROCEDURE | |
| 14. Transponder key ECU assembly (Communication malfunction) | INSPECTION PROCEDURE | |
| 15. Transponder key ECU assembly (Engine immobilizer system malfunction) | ECU Power Source Circuit | |
| 16. Transponder key ECU assembly (ECU power source circuit) | SECURITY HORN ASSEMBLY | |
| 17. Hybrid vehicle control ECU (Engine immobilizer system malfunction) | ECU Power Source Circuit |