WIRELESS DOOR LOCK CONTROL SYSTEM(w/ Entry and Start System) PROBLEM SYMPTOMS TABLE

Note:

When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.
As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), first perform the inspections in On-Vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (multiplex network body ECU) before performing this troubleshooting procedure.*
*: w/ Door Control Battery
Click here

Tip:

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.

Table 1. Wireless Door Lock Control System
Symptom	Suspected Area	Link
Wireless control function and entry function do not operate	Proceed to "All door entry Lock/Unlock functions and wireless functions do not operate"	Click here
Wireless control function does not operate but entry function operates	Electrical key transmitter sub-assembly	-
Only answer-back function does not operate properly	Proceed to "No answer-back"	Click here Click here
Only automatic lock function does not operate properly	Perform operation check	Click here
	Lighting system (INT) (Door courtesy light switch circuit)	Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
Only illuminated entry function does not operate	Perform operation check	Click here
	Lighting system	Click here Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
Only door ajar warning function does not operate	Perform operation check	Click here
	Lighting system (INT) (Door courtesy light switch circuit)	Click here Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here