ENGINE IMMOBILISER SYSTEM > PROBLEM SYMPTOMS TABLE

for Preparation Click here

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	Suspected area	See page
Hybrid control system does not start.	1. ECU power source circuit	Click here
	2. Unlock warning switch assembly	Click here
	3. Key (Transponder chip)	Click here
	4. Key (Unmatched encryption code)	Click here
	5. Key (Unmatched key code)	Click here
	6. Key (No communication)	Click here
	7. Key (Communication malfunction)	Click here
	8. Transponder key amplifier (Antenna coil)	Click here
	9. Transponder key amplifier (No communication)	Click here
	10. Transponder key amplifier (Communication malfunction)	Click here
	11. Transponder key ECU assembly (Unlock warning switch )	Click here
	12. Transponder key ECU assembly (Antenna coil)	Click here
	13. Transponder key ECU assembly (No communication)	Click here
	14. Transponder key ECU assembly (Communication malfunction)	Click here
	15. Transponder key ECU assembly (Engine immobiliser system malfunction)	Click here
	16. Transponder key ECU assembly (ECU power source circuit)	Click here
	17. Hybrid vehicle control ECU (Engine immobiliser system malfunction)	Click here