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 System

Symptom

Suspected Area

Link

Low beam headlight on one side does not illuminate

H-LP LH-LO fuse or H-LP RH-LO fuse

-

Headlight bulb (Low)

-

Harness or connector

-

Headlight unit

-

Light control ECU

-

Both left and right low beam headlights do not illuminate

Headlight dimmer switch circuit
Click here

Headlight relay circuit
Click here

Harness or connector

-

Main body ECU (Multiplex network body ECU)

-

High beam headlight on one side does not illuminate

H-LP LH-HI fuse or H-LP RH-HI fuse

-

Headlight bulb (High)

-

Harness or connector

-

Headlight unit

-

Both left and right high beam headlights do not illuminate (low beam headlights are normal)

H-LP HI fuse

-

Headlight dimmer switch circuit
Click here

Headlight (High beam) circuit
Click here

Harness or connector

-

Main body ECU (Multiplex network body ECU)

-

High beam headlights do not illuminate with "High Flash" function (passing function)

Headlight dimmer switch circuit
Click here

Main body ECU (Multiplex network body ECU)

-

Low beam headlights or high beam headlights do not turn off

Headlight dimmer switch assembly
Click here

Harness or connector

-

Main body ECU (Multiplex network body ECU)

-
Table 2. Taillight System

Symptom

Suspected Area

Link

Clearance light does not illuminate

Clearance light bulb

-

Headlight unit

-

Harness or connector

-

Taillight does not illuminate

Rear combination light assembly
Click here

Harness or connector

-

License plate light does not illuminate

License plate light assembly
Click here

Harness or connector

-

All lights do not illuminate

TAIL fuse

-

Headlight dimmer switch circuit
Click here

Taillight relay circuit
Click here

Harness or connector

-

Main body ECU (Multiplex network body ECU)

-
Table 3. Stop Light System

Symptom

Suspected Area

Link

Stop light on one side does not illuminate

Rear combination light assembly
Click here

Harness or connector

-

Center stop light does not illuminate

Center stop light assembly
Click here

Harness or connector

-

All lights do not illuminate

STOP fuse

-

Stop light switch assembly
Click here

Stop light control relay

-

Harness or connector

-
Table 4. Front Fog Light System

Symptom

Suspected Area

Link

Front fog light on one side does not illuminate

Front fog light bulb

-

Harness or connector

-

Both left and right front fog lights do not illuminate (taillight is normal)

FOG FR fuse

-

Headlight dimmer switch circuit
Click here

Front fog light circuit
Click here

Harness or connector

-

Main body ECU (Multiplex network body ECU)

-
Table 5. Rear Fog Light System (w/ Rear Fog Light)

Symptom

Suspected Area

Link

Rear fog light on one side does not illuminate

Rear fog light bulb

-

Harness or connector

-

Both left and right rear fog lights do not illuminate (taillight is normal)

FOG RR fuse

-

Headlight dimmer switch circuit
Click here

Rear fog light circuit
Click here

Harness or connector

-

Main body ECU (Multiplex network body ECU)

-
Table 6. Turn Signal and Hazard Warning Light System

Symptom

Suspected Area

Link

Hazard warning lights do not operate (turn signal lights are normal)

TRN&HAZ fuse

-

Hazard warning signal switch assembly
Click here

Turn signal flasher assembly
Click here

Harness or connector

-

Turn signal lights do not operate (hazard warning lights are normal)

IG1 fuse

-

Headlight dimmer switch assembly (Turn signal light switch)
Click here

Turn signal flasher assembly
Click here

Harness or connector

-

Hazard warning lights and turn signal lights do not operate

TRN&HAZ fuse and IG1 fuse

-

Turn signal flasher assembly
Click here

Harness or connector
Click here

Turn signal lights do not operate in one direction

Headlight dimmer switch assembly (Turn signal light switch)

-

Turn signal flasher assembly
Click here

Harness or connector

-

Front turn signal light does not illuminate

Front turn signal light bulb

-

Headlight unit

-

Harness or connector

-

Side turn signal light does not illuminate

Side turn signal light assembly
Click here

Harness or connector

-

Rear turn signal light does not illuminate

Rear turn signal light bulb

-

Rear combination light assembly

-

Harness or connector

-
Table 7. Back-up Light System

Symptom

Suspected Area

Link

Back-up light on one side does not illuminate

Back-up light bulb

-

Back-up light assembly

-

Harness or connector

-

Both left and right back-up lights do not illuminate

ECU-IG NO. 1 fuse

-

BK/UP relay

-

BKUP LP NO. 2 relay

-

Park/neutral position switch
Click here

Harness or connector

-
Table 8. Automatic Light Control System

Symptom

Suspected Area

Link

Automatic light control system does not operate

Check DTCs
Click here

Headlight dimmer switch circuit
Click here

IG signal circuit
Click here

Main body ECU (Multiplex network body ECU)

-
Table 9. Light Auto Turn-off System

Symptom

Suspected Area

Link

Light auto turn-off system does not operate

Headlight dimmer switch circuit
Click here

Door courtesy switch circuit
Click here

Back door courtesy switch circuit
Click here

IG signal circuit
Click here

Main body ECU (Multiplex network body ECU)

-
Table 10. AFS

Symptom

Suspected Area

Link

AFS does not operate

Check for DTCs
Click here

Headlight swivel ECU assembly power source
Click here

Headlight swivel ECU assembly

-

AFS OFF indicator light does not come on when turning the engine switch on (IG)

Combination meter assembly

-

Headlight swivel ECU assembly

-

AFS on/off condition cannot be changed using steering pad switch assembly

Steering pad switch assembly
Click here

Harness or connector

-

Combination meter assembly

-

Headlight swivel ECU assembly

-