ENGINE IMMOBILISER SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips

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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Engine Immobiliser System
Symptom	Suspected Area	See page
Engine does not start.	Key	Click here
	Steering lock system	Click here
	Entry and start system (for start function)	Click here
	Hybrid vehicle control system	Click here
Security indicator light is always on.	Certification ECU (smart key ECU assembly)	Click here
	Wire harness or connector	-
	Radio receiver assembly	-
Security indicator light is off.	Certification ECU (smart key ECU assembly)	Click here
	Wire harness or connector	-
	Radio receiver assembly	-