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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Low beam headlights and high beam headlights do not illuminate | HEAD fuse | - |
| Headlight dimmer switch assembly | ||
| Harness or connector | - | |
| Both left and right low beam headlights do not illuminate (hi beam headlights are normal) | H-LP MAIN relay | |
| Headlight dimmer switch assembly | ||
| Harness or connector | - | |
| Low beam headlight on one side does not illuminate | H-LP LH LO fuse or H-LP RH LO fuse | - |
| Headlight bulb | ||
| Harness or connector | - | |
| Both left and right high beam headlights do not illuminate (low beam headlights are normal) | H-LP HI relay | |
| Headlight dimmer switch assembly | ||
| Harness or connector | - | |
| High beam headlight on one side does not illuminate | H-LP LH HI fuse or H-LP RH HI fuse | - |
| Headlight bulb | ||
| Harness or connector | - | |
| High beam headlights do not illuminate with "High Flash" function (passing function) | Headlight dimmer switch assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Both left and right front fog lights do not illuminate (taillights are normal) | FOG fuse | - |
| FOG relay | - | |
| Headlight dimmer switch assembly | ||
| Harness or connector | - | |
| Front fog light on one side does not illuminate | Fog light bulb | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Rear fog light does not illuminate (front fog light is normal) | RR FOG relay | |
| Rear fog light bulb | ||
| Rear fog light control unit relay assembly | ||
| Headlight dimmer switch assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Both left and right taillights do not illuminate (clearance lights, front marker lights and license plate light included) | TAIL fuse | - |
| ECU-B fuse | - | |
| TAIL relay | - | |
| Headlight dimmer switch assembly | ||
| Harness or connector | - | |
| Taillight on one side does not illuminate | Tail & stop bulb | - |
| Rear combination light assembly | - | |
| Harness or connector | - | |
| Front marker lights do not illuminate (taillights, license plate light and clearance lights are normal) | Front marker light bulb | |
| Harness or connector | - | |
| License plate light do not illuminate (taillights, front marker lights and clearance lights are normal) | License plate light bulb | |
| Harness or connector | - | |
| Clearance lights do not illuminate (taillights, front marker lights and license plate light are normal) | Clearance light bulb | |
| Harness or connector | - | |
| No instrument panel illumination comes on (taillights, front marker lights, license plate light and clearance lights are normal) | Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Stop lights do not illuminate | STOP fuse | - |
| Stop light switch assembly | ||
| Harness or connector | - | |
| Stop light on one side does not illuminate | Tail & stop bulb | - |
| Rear combination light assembly | - | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Back-up lights do not illuminate | IG1 fuse | - |
| Back-up light switch assembly | - | |
| Harness or connector | - | |
| Back-up light on one side does not illuminate | Back up light bulb | - |
| Rear combination light assembly | - | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Hazard warning lights and turn signal lights do not operate | HAZ/HORN fuse | - |
| Turn signal flasher assembly | ||
| Harness or connector | - | |
| Hazard warning lights do not operate (turn signal lights are normal) | Hazard warning signal switch assembly | |
| Turn signal flasher assembly | ||
| Harness or connector | - | |
| Turn signal lights do not operate (hazard warning lights are normal) | Headlight dimmer switch assembly | |
| Turn signal flasher assembly | ||
| Harness or connector | - | |
| Front turn signal lights on one side do not operate | Front turn signal light bulb | |
| Harness or connector | - | |
| Side turn signal lights on one side do not operate | Side turn signal light bulb | - |
| Harness or connector | - | |
| Rear turn signal lights on one side do not operate | Rear turn signal light bulb | - |
| Rear combination light assembly | - | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Manual headlight leveling control system does not operate | IGN(12V) fuse | - |
| Headlight leveling switch | ||
| Headlight assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| No. 1 room light does not illuminate | PWR5 fuse | - |
| DOME fuse | - | |
| No. 1 room light bulb | - | |
| No. 1 room light assembly | - | |
| Front door courtesy light switch assembly LH | - | |
| Front door courtesy light switch assembly RH | - | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| No. 2 room light does not illuminate | PWR5 fuse | - |
| Room light switch | ||
| No. 2 room light assembly | - | |
| Harness or connector | - |