LIGHTING SYSTEM PROBLEM SYMPTOMS TABLE

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.

Table 1. Illuminated Entry System
Symptom	Suspected Area	Link
Illuminated entry system does not operate normally	DOME fuse	-
	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
	IG signal circuit	Click here Click here
	ACC signal circuit	Click here Click here
	Interior light circuit	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
Only engine switch illumination does not illuminate*1	CAN communication system	Click here
	Engine switch illumination circuit	Click here Click here
	Certification ECU (Smart key ECU assembly)	-
Only personal light does not illuminate (The room light illuminates)*2	Map light assembly	Click here
	Harness or connector (Including all light components that are part of the wire harness)	-
Only personal light does not illuminate (The room light illuminates)*3	Map light assembly	Click here
Only personal light does not illuminate*4	Map light assembly	Click here
Only room light does not illuminate (The personal light illuminates)*2	Harness or connector (Including all light components that are part of the wire harness)	-
Only room light does not illuminate (The personal light illuminates)*3	No. 1 room light assembly	Click here
	Map light assembly	Click here
	Harness or connector	-

*1: w/ Entry and Start System
*2: w/ Room Light (for Slide Switch Type)
*3: w/ Room Light (for Push Switch Type)
*4: w/o Room Light

Table 2. Battery Saving Control
Symptom	Suspected Area	Link
Battery saving function does not operate	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
	IG signal circuit	Click here Click here
	ACC signal circuit	Click here Click here
	CAN communication system	Click here
	Interior light auto cut circuit	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here

Table 3. Interior Light Power Source Control
Symptom	Suspected Area	Link
All the interior lights that receive power via the light cut relay do not illuminate (The DOME fuse is normal)	Interior light power source circuit	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here
All the interior lights that receive power via the light cut relay do not illuminate (Although the DOME fuse is replaced, the fuse breaks again)	Map light assembly	Click here
	No. 1 luggage compartment light assembly (for Hatchback)	Click here
	No. 1 luggage compartment light assembly (for Wagon)	Click here
	No. 1 luggage compartment light assembly (for Sedan)	Click here
	Vanity light assembly*1	Click here
	No. 1 room light assembly*2	Click here
	Harness or connector (Including all light components that are part of the wire harness)	-
	Instrument panel junction block assembly (for RHD)	Click here
	Instrument panel junction block assembly (for LHD)	Click here
	Main body ECU (Multiplex network body ECU) (for RHD)	Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here

*1: w/ Vanity Light
*2: w/ Room Light (for Push Switch Type)

Table 4. Personal Light
Symptom	Suspected Area	Link
Personal light does not illuminate	Bulb	-
	Map light assembly	Click here
	Harness or connector	-

Table 5. Room Light
Symptom	Suspected Area	Link
Room light does not illuminate*1	Bulb	-
	No. 1 room light assembly	Click here
	Harness or connector	-
Room light does not illuminate*2	Bulb	-
Room light does not illuminate*2	Harness or connector (Including all light components that are part of the wire harness)	-

*1: w/ Room Light (for Push Switch Type)
*2: w/ Room Light (for Slide Switch Type)

Table 6. Vanity Light
Symptom	Suspected Area	Link
Vanity light does not illuminate	Bulb	-
	Vanity light assembly	Click here
	Harness or connector	-

Table 7. Glove Box Light
Symptom	Suspected Area	Link
Glove box light does not illuminate	Glove box light assembly (for Hatchback)	Click here
	Glove box light assembly (for Wagon)	Click here
	Glove box light assembly (for Sedan)	Click here
	Harness or connector	-

Table 8. Luggage Compartment Room Light
Symptom	Suspected Area	Link
Luggage compartment room light does not illuminate	Bulb	-
	No. 1 luggage compartment light assembly (for Hatchback)	Click here
	No. 1 luggage compartment light assembly (for Wagon)	Click here
	No. 1 luggage compartment light assembly (for Sedan)	Click here
	Back door courtesy switch circuit	Click here
	Harness or connector	-
	Instrument panel junction block assembly (for RHD)	Click here
	Instrument panel junction block assembly (for LHD)	Click here
		Click here
	Main body ECU (Multiplex network body ECU) (for LHD)	Click here

Table 9. Instrument Panel Illumination
Symptom	Suspected Area	Link
All the instrument panel illumination lights do not come on (The taillights illuminate)	PANEL fuse	-
	Harness or connector	-
	Instrument panel junction block assembly (for RHD)	Click here
	Instrument panel junction block assembly (for LHD)	Click here