Toyota Fortuner. Theft Deterrent System Problem Symptoms Table

Theft Deterrent System -- Problem Symptoms Table

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 power door lock control system and wireless door lock control system are operating normally. Check these systems first before troubleshooting the theft deterrent system.

Theft deterrent system
Symptom	Suspected Area	See page
Theft deterrent system cannot be set	1. Security indicator light circuit	Toyota Fortuner RM000001J8S004X.html
	2. ECU power source circuit	Toyota Fortuner RM000001J8O004X.html
	3. Unlock warning switch	Toyota Fortuner RM000001LBI001X.html
	4. Door lock and unlock switch	Toyota Fortuner RM000001J0D003X.html
	5. Driver side door courtesy switch circuit	Toyota Fortuner RM000001J8V004X.html
	6. Front passenger side door courtesy switch circuit	Toyota Fortuner RM000001J8W004X.html
	7. Rear door courtesy switch LH circuit	Toyota Fortuner RM000001J8X004X.html
	8. Rear door courtesy switch RH circuit	Toyota Fortuner RM000001J8Y004X.html
	9. Back door courtesy switch circuit	Toyota Fortuner RM000001K64002X.html
	10. Engine hood courtesy switch circuit	Toyota Fortuner RM000001K63004X.html
Security indicator light is not flashing when theft deterrent system is set	1. Security indicator light circuit	Toyota Fortuner RM000001J8S004X.html
Alarm sounding state cannot be canceled when ignition switch is turned ON	1. Ignition switch circuit	Toyota Fortuner RM000001J8P004X.html
	2. Unlock warning switch	Toyota Fortuner RM000001LBI001X.html
Theft deterrent system can be set even when door is open	1. Driver side door courtesy switch circuit	Toyota Fortuner RM000001J8V004X.html
	2. Front passenger side door courtesy switch circuit	Toyota Fortuner RM000001J8W004X.html
	3. Rear door courtesy switch LH circuit	Toyota Fortuner RM000001J8X004X.html
	4. Rear door courtesy switch RH circuit	Toyota Fortuner RM000001J8Y004X.html
	5. Back door courtesy switch circuit	Toyota Fortuner RM000001K64002X.html
Vehicle horns do not sound while theft deterrent system is in warning operation	1. Horn circuit	Toyota Fortuner RM000001J8R004X.html
Hazard warning lights are not flashing while theft deterrent system is in warning operation	1. Hazard warning switch	Toyota Fortuner RM0000014DS003X.html
Security horn does not sound while theft deterrent system is in warning operation	1. Security horn circuit	Toyota Fortuner RM000001J8Q004X.html
Hazard warning lights are flashing even when theft deterrent system is not set	1. Hazard warning switch	Toyota Fortuner RM0000014DS003X.html

If the suspected areas are found to be functioning normally, replace the theft warning ECU.