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.

Personal Light
Symptom	Suspected Area	Link
Personal light LH does not illuminate	Bulb	-
	Map light assembly	Click here
	Harness or connector	-
Personal light RH does not illuminate	Bulb	-
	Map light assembly	Click here
	Harness or connector	-

Room Light (No. 1 room light)
Symptom	Suspected Area	Link
Room light does not illuminate	Bulb	-
Room light does not illuminate	Harness or connector (Including all light components that are part of the wire harness)	-

Vanity Light
Symptom	Suspected Area	Link
Vanity light LH does not illuminate	Bulb	Click here
	Visor assembly LH	-
	Harness or connector	-
Vanity light RH does not illuminate	Bulb	Click here
	Visor assembly RH	-
	Harness or connector	-

Courtesy Light
Symptom	Suspected Area	Link
Courtesy light LH does not illuminate	Bulb	-
	Courtesy light assembly LH	Click here
	Front door courtesy switch circuit	Click here
	Rear door courtesy switch circuit	Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU)	Click here
Courtesy light RH does not illuminate	Bulb	-
	Courtesy light assembly RH	Click here
	Front door courtesy switch circuit	Click here
	Rear door courtesy switch circuit	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	Glove box light assembly	Click here
Glove box light does not illuminate	Harness or connector	-

Footwell Light (w/ Footwell Light)
Symptom	Suspected Area	Link
Footwell light LH or footwell light RH does not illuminate	No. 1 interior illumination light assembly(Footwell light)	Click here
Footwell light LH or footwell light RH does not illuminate	Harness or connector	-
Footwell light LH and footwell light RH does not illuminate	Footwell light circuit	Click here
Footwell light LH and footwell light RH does not illuminate	Main body ECU (Multiplex network body ECU)	Click here

Luggage Compartment Light
Symptom	Suspected Area	Link
Luggage compartment room light does not illuminate	Bulb	-
	No. 1 luggage compartment light assembly	Click here
	Back door courtesy switch circuit	Click here
	Harness or connector	-
	Instrument panel junction block assembly	Click here
	Main body ECU (Multiplex network body ECU)	Click here

Interior Light Power Source Control
Symptom	Suspected Area	Link
All the interior lights that receive power via the DOME CUT relay do not illuminate (The DOME fuse is normal)	Interior light auto cut circuit	Click here
	Main body ECU (Multiplex network body ECU)	Click here

Illuminated Entry System (Interior Light Control)
Symptom	Suspected Area	Link
All interior light control functions do not operate under any condition	Interior light auto cut circuit	Click here
	Interior light circuit	Click here
	Main body ECU (Multiplex network body ECU)	Click here
Door open/close-linked control function does not operate when doors are opened/closed	Front door courtesy switch circuit	Click here
	Rear door courtesy switch circuit	Click here
	Back door courtesy switch circuit	Click here
	Main body ECU (Multiplex network body ECU)	Click here
Door lock/unlock-linked control function does not operate when doors are locked/unlocked	Door unlock detection switch circuit	Click here
	Main body ECU (Multiplex network body ECU)	Click here
Actuation area-linked control function does not operate when registered key is brought into any exterior detection area	CAN communication system	Click here
	Entry and Start System (for Entry Function)	Click here
	Main body ECU (Multiplex network body ECU)	Click here
Power switch-linked control function does not operate when power switch is operated	IG signal circuit	Click here
	ACC signal circuit	Click here
	Main body ECU (Multiplex network body ECU)	Click here
Power switch illumination does not illuminated	CAN communication system	Click here
	Power switch illumination circuit	Click here
	Certification ECU (Smart key ECU assembly)	-

Battery Saving Control
Symptom	Suspected Area	Link
Battery saving function does not operate	IG signal circuit	Click here
	ACC signal circuit	Click here
	Front door courtesy switch circuit	Click here
	Rear door courtesy switch circuit	Click here
	Back door courtesy switch circuit	Click here
	Door unlock detection switch circuit	Click here
	Interior light auto cut circuit	Click here
	Main body ECU (Multiplex network body ECU)	Click here