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

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 startsystem (for entry function)	Click here
	Luggage compartment door closer system	Click here
	DOME fuse	-
	Interior light circuit	Click here
	Door unlock detection switch circuit	Click here
	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)	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.	Spot light assembly	Click here
Spot light assembly does not illuminate.	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	Click here
	Luggage compartment door closer system	Click here
	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	-

Shift Light
Symptom	Suspected Area	Link
Shift light does not illuminate.	LH-IG fuse	-
	Inner rear view mirror assembly	Click here
	Map light assembly	Click here
	Harness or connector	-

Front Courtesy Light Assembly
Symptom	Suspected Area	Link
Front courtesy light assembly does not illuminate.	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	Front courtesy light assembly	Click here
	Door courtesy switch circuit	Click here
	Door courtesy light Circuit	Click here
	Harness or connector	-
	Front multiplex network door ECU LH	Click here
	Front multiplex network door ECU RH	Click here
	Main body ECU (Multiplex network body ECU)	Click here

Rear Courtesy Light Assembly
Symptom	Suspected Area	Link
Rear courtesy light assembly does not illuminate.	Door courtesy switch circuit	Click here
	Rear courtesy light assembly	Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU)	Click here

Glove Box Light
Symptom	Suspected Area	Link
Glove box light does not illuminate.	Harness or connector	-

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

Interior Foot Light and Door Illumination
Symptom	Suspected Area	Link
Front door inside handle illumination light assembly and No. 1 interior illumination light assembly (front door ambient light) do not illuminate.	Illumination circuit	Click here
	Front multiplex network door ECU LH	Click here
	Front multiplex network door ECU RH	Click here
	Main body ECU (Multiplex network body ECU)	Click here
Rear door inside handle illumination light assembly, No. 1 interior illumination light assembly (rear door ambient light) and front interior foot lights.	Illumination circuit	Click here
	Main body ECU (Multiplex network body ECU)	Click here
Rear door inside handle illumination light assembly does not illuminate.	Rear door inside handle illumination light assembly	Click here
	Harness or connector	-
No. 1 interior illumination light assembly (rear door ambient light) does not illuminate.	No. 1 interior illumination light assembly (rear door ambient light)	Click here
	Harness or connector	-
Front interior foot lights do not illuminate.	Harness or connector	-

Outer Rear View Mirror Assembly (Door Mirror Foot Light)
Symptom	Suspected Area	Link
Door mirror foot light does not illuminate.	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	Door mirror foot light circuit	Click here
	Front multiplex network door ECU LH	Click here
	Front multiplex network door ECU RH	Click here
	Main body ECU (Multiplex network body ECU)	Click here

Battery Saving Control System
Symptom	Suspected Area	Link
Battery saving function does not operate.	Door courtesy switch circuit	Click here
	Luggage compartment door closer system	Click here
	IG signal circuit	Click here
	Interior light auto cut circuit	Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU)	Click here

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)	Click here

Instrument Panel Illumination System
Symptom	Suspected Area	Link
No instrument panel illumination lights come on (taillights operate normally).	Instrument panel illumination circuit	Click here
	Harness or connector	-
	No. 2 integration relay	Click here
	Main body ECU (Multiplex network body ECU)	Click here