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. Headlight (w/o Automatic Light Control)
Symptom	Suspected Area	Link
One side low beam headlight does not illuminate	H-LP LH-LO fuse or H-LP RH-LO fuse	-
	Bulb	-
	Harness or connector	-
Both left and right low beam headlights do not illuminate	H-LP MAIN fuse	-
	H-LP relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
One side high beam headlight does not illuminate	H-LP LH-HI fuse or H-LP RH-HI fuse	-
	Headlight unit	Click here
	Harness or connector	-
Both left and right high beam headlights do not illuminate	DIM relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
"High Flash" (passing function) does not operate (high beam headlights are normal)	Harness or connector	-
	Headlight dimmer switch assembly	Click here
One side clearance light does not illuminate	Headlight unit	Click here
One side clearance light does not illuminate	Harness or connector	-
Both left and right clearance lights do not illuminate	Harness or connector	-

Table 2. Headlight (w/ Automatic Light Control)
Symptom	Suspected Area	Link
One side low beam headlight does not illuminate	H-LP LH-LO fuse or H-LP RH-LO fuse	-
	Bulb	-
	Harness or connector	-
Both left and right low beam headlights do not illuminate	H-LP MAIN fuse	-
	H-LP relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
	Driver side junction block assembly	Click here
	Main body ECU (Multiplex network body ECU)	Click here
One side high beam headlight does not illuminate	H-LP LH-HI fuse or H-LP RH-HI fuse	-
	Headlight unit	Click here
	Harness or connector	-
Both left and right high beam headlights do not illuminate	DIM relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
	Driver side junction block assembly	Click here
	Main body ECU (Multiplex network body ECU)	Click here
"High Flash" (passing function) does not operate (high beam headlights are normal)	Headlight dimmer switch assembly	Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU)	Click here
One side clearance light does not illuminate	Headlight unit	Click here
One side clearance light does not illuminate	Harness or connector	-
Both left and right clearance lights do not illuminate	Harness or connector	-

Table 3. Taillight (w/o Automatic Light Control)
Symptom	Suspected Area	Link
One side taillight does not illuminate	Bulb	-
	Rear combination light socket and wire sub-assembly	Click here
	Harness or connector	-
All of the lights (taillights, clearance lights and license plate lights) do not illuminate (TAIL fuse is normal)	TAIL relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
All of the lights (taillights, clearance lights and license plate lights) do not illuminate (TAIL fuse breaks when replaced)	Harness or connector	-
	License plate light assembly	Click here
	Rear combination light socket and wire sub-assembly	Click here
	Headlight unit	Click here

Table 4. Taillight (w/ Automatic Light Control)
Symptom	Suspected Area	Link
One side taillight does not illuminate	Bulb	-
	Rear combination light socket and wire sub-assembly	Click here
	Harness or connector	-
All of the lights (taillights, clearance lights and license plate lights) do not illuminate (TAIL fuse is normal)	TAIL relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU)	Click here
All of the lights (taillights, clearance lights and license plate lights) do not illuminate (TAIL fuse breaks when replaced)	Harness or connector	-
	License plate light assembly	Click here
	Rear combination light socket and wire sub-assembly	Click here
	Headlight unit	Click here

Table 5. License Plate Light
Symptom	Suspected Area	Link
Both left and right license plate lights do not illuminate	Harness or connector	-
One side license plate light does not illuminate	Bulb	-
	License plate light assembly	Click here
	Harness or connector	-

Table 6. Stop Light
Symptom	Suspected Area	Link
One side stop light does not illuminate	Bulb	-
	Rear combination light socket and wire sub-assembly	Click here
	Harness or connector	-
Center stop light does not illuminate	Bulb	-
	Center stop light assembly	Click here
	Harness or connector	-
All of the stop lights do not illuminate	STOP fuse	-
	STOP LP relay (w/ Stop Light Relay)	Click here
	Stop light switch assembly	Click here
	Harness or connector	-
Stop lights remain on	Harness or connector	-
	STOP LP relay (w/ Stop Light Relay)	Click here
	Stop light switch assembly	Click here
	Brake actuator assembly (Skid Control ECU) (w/ Stop Light Relay)	Click here

Table 7. Front Fog Light (w/ Front Fog Light without Automatic Light Control)
Symptom	Suspected Area	Link
One side front fog light does not illuminate	Bulb	-
	Fog light assembly	Click here
	Harness or connector	-
Both left and right front fog lights do not illuminate (taillights are normal)	FOG FR fuse	-
	FR FOG relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-

Table 8. Front Fog Light (w/ Front Fog Light with Automatic Light Control)
Symptom	Suspected Area	Link
One side front fog light does not illuminate	Bulb	-
	Fog light assembly	Click here
	Harness or connector	-
Both left and right front fog lights do not illuminate (taillights are normal)	FOG FR fuse	-
	FR FOG relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
	Driver side junction block assembly	Click here
	Main body ECU (Multiplex network body ECU)	Click here

Table 9. Rear Fog Light (w/o Automatic Light Control)
Symptom	Suspected Area	Link
Rear fog light does not illuminate (taillights are normal)	Bulb	-
	FOG RR fuse	-
	RR FOG relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-

Table 10. Rear Fog Light (w/ Automatic Light Control)
Symptom	Suspected Area	Link
Rear fog light does not illuminate (taillights are normal)	Bulb	-
	FOG RR fuse	-
	RR FOG relay	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
	Driver side junction block assembly	Click here
	Main body ECU (Multiplex network body ECU)	Click here

Table 11. Back-up Light
Symptom	Suspected Area	Link
Back-up light does not illuminate	Bulb	-
	IG1 NO. 2 fuse	-
	Rear combination light socket and wire sub-assembly	Click here
	Back-up light switch assembly (for Multi-mode Manual Transaxle (C553A))	Click here
	Back-up light switch assembly (for Manual Transaxle (C550))	Click here
	Back-up light switch assembly (for Manual Transaxle (C551))	Click here
	Back-up light switch assembly (for Manual Transaxle (MA))	Click here
	Harness or connector	-

Table 12. Turn Signal Light
Symptom	Suspected Area	Link
One side turn signal light does not operate (except side turn signal lights)	Bulb	-
	Rear combination light socket and wire sub-assembly	Click here
	Harness or connector	-
Side turn signal light does not operate	Side turn signal light assembly	Click here
Side turn signal light does not operate	Harness or connector	-
Turn signal lights do not operate in one direction	Turn signal switch circuit	Click here
Turn signal lights do not operate in one direction	Combination meter assembly	Click here
All turn signal lights do not operate	Headlight dimmer switch assembly	Click here
All turn signal lights do not operate	Combination meter assembly	Click here
All turn signal lights do not flash at the correct speed	Combination meter assembly	Click here

Table 13. Hazard Warning Light
Symptom	Suspected Area	Link
Hazard warning lights do not operate	HAZ fuse	-
	Hazard warning switch circuit	Click here
	Harness or connector	-
	Combination meter assembly	Click here

Table 14. Automatic Light Control System (w/ Automatic Light Control)
Symptom	Suspected Area	Link
Automatic light control system does not operate	Automatic light control sensor	Click here
	Headlight dimmer switch assembly	Click here
	Harness or connector	-
	Main body ECU (Multiplex network body ECU)	Click here

Table 15. Light Auto Turn-off System (w/ Automatic Light Control)
Symptom	Suspected Area	Link
Light auto turn-off system does not operate	Headlight dimmer switch assembly	Click here
	Ignition switch*1	Click here
	Ignition switch*2	Click here
	Engine stop and start ECU*3	Click here
	Front door courtesy switch (for Driver Side)	Click here
	Harness or connector	-
	Driver side junction block assembly	Click here
	Main body ECU (Multiplex network body ECU)	Click here

*1: for 1KR-FE without Stop and Start System
*2: for 1PP without Stop and Start System
*3: w/ Stop and Start System

Table 16. Daytime Running Light System (w/ Daytime Running Light)
Symptom	Suspected Area	Link
Both left and right daytime running lights do not illuminate	DRL fuse	-
	DRL relay	Click here
	Headlight dimmer switch assembly	Click here
	Ignition switch*1	Click here
	Ignition switch*2	Click here
	Engine stop and start ECU*3	Click here
	Harness or connector	-
	Combination meter assembly	Click here
One side daytime running light does not illuminate	Daytime running light assembly	Click here
One side daytime running light does not illuminate	Harness or connector	-

*1: for 1KR-FE without Stop and Start System
*2: for 1PP without Stop and Start System
*3: w/ Stop and Start System

Table 17. Follow Me Home System (w/ Automatic Light Control)
Symptom	Suspected Area	Link
Follow me home system does not operate	Headlight dimmer switch assembly	Click here
	Ignition switch*1	Click here
	Ignition switch*2	Click here
	Engine stop and start ECU*3	Click here
	Harness or connector	-
	Driver side junction block assembly	Click here
	Main body ECU (Multiplex network body ECU)	Click here

*1: for 1KR-FE without Stop and Start System
*2: for 1PP without Stop and Start System
*3: w/ Stop and Start System