WIRELESS DOOR LOCK CONTROL SYSTEM (for Built-in Type Door Control Receiver) PROBLEM SYMPTOMS TABLE

Note

When replacing the theft warning ECU assembly, refer to the registration procedures Click here.

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.

Wireless Door Lock Control System
Symptom	Suspected Area	See page
Only wireless control function is inoperative	Proceed to "Only Wireless Control Function is Inoperative"	Click here
No answer-back*	Proceed to "No Answer-Back"	Click here
Only automatic lock function does not operate	Perform operation check	Click here
	Proceed to "Driver Side Door Courtesy Switch Circuit"	Click here
	Proceed to "Front Passenger Side Door Courtesy Switch Circuit"	Click here
	Proceed to "Rear Door Courtesy Switch LH Circuit" (for Double Cab)	Click here
	Proceed to "Rear Door Courtesy Switch RH Circuit" (for Double Cab)	Click here
	Driver side junction block assembly	-
	Theft warning ECU assembly	-
Only illuminated entry function does not operate	Perform operation check	Click here
Only illuminated entry function does not operate	Lighting system	Click here
Only door ajar warning function does not operate	Perform operation check	Click here
	Proceed to "Driver Side Door Courtesy Switch Circuit"	Click here
	Proceed to "Front Passenger Side Door Courtesy Switch Circuit"	Click here
	Proceed to "Rear Door Courtesy Switch LH Circuit" (for Double Cab)	Click here
	Proceed to "Rear Door Courtesy Switch RH Circuit" (for Double Cab)	Click here
	Proceed to "Security Horn Circuit"	Click here
Only alarm function does not operate	Perform operation check	Click here
Only alarm function does not operate	Theft deterrent system	Click here
Only 2 step unlock function does not operate (for 2 Step Unlock Function)	Perform operation check	Click here
	Harness or connector	-
	Theft warning ECU assembly	-

Tech Tips

*: The security horn applies only if the wireless answer-back function has been customized so that the hazard warning lights flash and the security horn sounds.