LIGHTING 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 related to this system before inspecting the suspected areas below.
If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.
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

Illuminated Entry System
Symptom	Suspected Area	Link
Illuminated entry system does not operate.	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	Entry and start system (for Entry Function)	Click here
	DOME fuse	-
	Interior light circuit	Click here
	Door unlock detection switch circuit	Click here
	Door courtesy switch circuit	Click here
	Back door courtesy switch circuit	Click here
	IG signal circuit	Click here
	ACC signal circuit	Click here
	Interior light auto cut 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

Map Light Assembly
Symptom	Suspected Area	Link
Map light assembly does not illuminate.	Map light assembly	Click here
Map light assembly does not illuminate.	Harness or connector	-

Spot Light Assembly
Symptom	Suspected Area	Link
Spot light assembly does not illuminate.	Map light assembly	Click here
	Spot light assembly	Click here
	Harness or connector	-

No. 1 Luggage Compartment Light Assembly
Symptom	Suspected Area	Link
No. 1 luggage compartment light assembly does not illuminate.	No. 1 luggage compartment light bulb	Click here
	No. 1 luggage compartment light assembly LH	Click here
	No. 1 luggage compartment light assembly RH	Click here
	Harness or connector	-

Glove Box Light Assembly
Symptom	Suspected Area	Link
Glove box light assembly does not illuminate.	Glove box light bulb	Click here
Glove box light assembly does not illuminate.	Harness or connector	-

Vanity Light Assembly
Symptom	Suspected Area	Link
Vanity light assembly does not illuminate.	Vanity light bulb	Click here
	Visor assembly	Click here
	Harness or connector	-

Engine Switch Illumination System
Symptom	Suspected Area	Link
Engine switch illumination does not illuminate.	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	Headlight dimmer switch circuit	Click here
	Engine switch illumination circuit	Click here
	Certification ECU (Smart key ECU assembly)	-
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here

Console Box Illumination Light
Symptom	Suspected Area	Link
Console box illumination light does not illuminate.	Console box illumination light assembly	Click here
Console box illumination light does not illuminate.	Harness or connector	-

Battery Saving Control System
Symptom	Suspected Area	Link
Battery saving function (basic function) does not operate.	Door courtesy switch circuit	Click here
	Back door courtesy switch circuit	Click here
	IG signal 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
Battery saving function (interior light auto cut function) does not operate.	Interior light auto cut circuit	Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here

Door Outside Handle Illumination Light
Symptom	Suspected Area	Link
One of the door outside handles does not illuminate.	Footwell light illumination circuit	Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
All of the door outside handles do not illuminate.	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
	Harness or connector	-

Instrument Panel Illumination System
Symptom	Suspected Area	Link
No instrument panel illumination lights come on (taillights operate normally).	PANEL fuse	-
	Harness or connector	-