Problem Symptoms Table
HINT:
Use the table below to help determine the cause of the problem symptom. 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.
Lighting system
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| headlight does not come on (LOW beam) | 1. Light control switch circuit | LIGHT CONTROL SWITCH CIRCUIT |
| 2. Headlight relay circuit | Headlight Relay Circuit | |
| 3. Combination switch | - | |
| 4. Body ECU (Main) | - | |
| Headlight system does not operate (HI beam or Flash) | 1. Dimmer signal circuit | DIMMER SIGNAL CIRCUIT |
| 2. Light control switch circuit | - | |
| 3. Combination switch | - | |
| 4. Body ECU (Main) | - |
Headlight and taillight system
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| Automatic light control system does not operate | 1. Light control sensor circuit | LIGHT CONTROL SWITCH CIRCUIT |
| 2. Light control sensor | - | |
| 3. Body ECU (Main) | - | |
| Taillight system does not comes on | 1. Taillight relay circuit | TAILLIGHT RELAY CIRCUIT |
| 2. Taillight circuit | Taillight Circuit | |
| 3. Light control switch circuit | LIGHT CONTROL SWITCH CIRCUIT | |
| 4. Combination switch | - | |
| 5. Sub body ECU | - | |
| 6. Body ECU (Main) | - | |
| Stop light system does not come on | 1. Stop light switch | STOP LIGHT SWITCH |
| 2. Stop light circuit | Stop Light Circuit | |
| 3.Sub body ECU | - | |
| Automatic light control system does not operate | 1. Automatic light control sensor | AUTOMATIC LIGHT CONTROL SENSOR |
| 2. Light control sensor | - | |
| 3. Door courtesy switch | FRONT DOOR COURTESY SWITCH | |
| 4. Wire harness | - | |
| 5. Body ECU (Main) | - | |
| Auto turn-off system does not operate when driver door is opened | Driver door courtesy switch | FRONT DOOR COURTESY SWITCH |
| Headlight and taillight do not come on | 1. Wire harness | - |
| 2. Body ECU (Main) | - | |
| Headlight and taillight stay on | 1. Wire harness | - |
| 2. Body ECU (Main) | - | |
| Only on headlight come on | 1. Bulb | - |
| 2. Daytime running light relay | LIGHT CONTROL SWITCH | |
| 3. Wire harness | - | |
| 4. Body ECU (Main) | - | |
| LO-beam does not come on (ALL) | 1. Engine room junction block relay circuit | - |
| 2. Wire harness | - | |
| 3. Body ECU (Main) | - | |
| LO-beam does not come on (one side) | 1. Bulb | - |
| 2. H-LP L-LWR fuse | - | |
| 3. H-LP R-LWR fuse | - | |
| 4. Wire harness | - | |
| HI-beam does not come on (ALL) | 1. Headlight dimmer switch | Headlight dimmer switch |
| 2. Wire harness | - | |
| 3. Body ECU (Main) | - | |
| HI-beam does not come on (one side) | 1. Bulb | - |
| 2. H-LP L-LWR fuse | - | |
| 3. H-LP R-LWR fuse | - | |
| 4. Daytime running light relay | LIGHT CONTROL SWITCH | |
| 5. Wire harness | - | |
| Flash does not come on | 1. Headlight dimmer switch | HEADLIGHT DIMMER SWITCH |
| 2. Wire harness | - | |
| 3. Body ECU (Main) | - | |
| Headlight does not come on | 1. Bulb | - |
| 2. Headlight dimmer switch | HEADLIGHT DIMMER SWITCH | |
| 3. Light control switch | LIGHT CONTROL SWITCH | |
| 4. Daytime running light relay | LIGHT CONTROL SWITCH | |
| 5. Engine room junction block circuit | - | |
| 6. Wire harness | - | |
| 7. Body ECU (Main) | - | |
| Headlight does not come on with light control switch in HEAD | 1. Light control switch | LIGHT CONTROL SWITCH |
| 2. Wire harness | - | |
| 3. Body ECU (Main) | - | |
| Headlight does not go off with light control switch in OFF | 1. Engine room junction block circuit | - |
| 2. Wire harness | - | |
| 3. Body ECU (Main) | - | |
| Headlight flickers | 1. Bulb | - |
| 2. Wire harness | - | |
| Headlight is dark | 1. Bulb | - |
| 2. Wire harness | - | |
| Taillight does not come on with light control switch in TAIL | 1. Light control switch | LIGHT CONTROL SWITCH |
| 2. Engine room junction block circuit | - | |
| 3. Wire harness | - | |
| 4. Sub body ECU | - | |
| 5. Body ECU (Main) | - | |
| Headlight dies not come on with running and light control switch n OFF | 1. ECU-B2 fuse | - |
| 2. ECU-IG1 fuse | - | |
| 3. Daytime running light relay | LIGHT CONTROL SWITCH | |
| 4. Generator terminal | - | |
| 5. Parking brake switch | PARKING BRAKE ASSEMBLY | |
| 6. Wire harness | - | |
| 7. Body ECU (Main) | - |
Hazard warning system
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| Hazard warning light does not come on | 1. Hazard switch | HAZARD WARNING SWITCH |
| 2. Flasher relay | - |
Illumination light system
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| Illumination light does not come on | 1. ECU power source circuit | ECU power source circuit |
| 2. Power source circuit | Power Source Circuit | |
| 3. Illumination circuit | Illumination Circuit | |
| 4. Sub body ECU | - | |
| 5. Body ECU (Main) | - | |
| Brightness does not change even when rheostat is turned on (ALL) | 1. Light control rheostat | LIGHT CONTROL RHEOSTAT |
| 2. Body ECU (Main) | - | |
| Door courtesy light does not come on | 1. Door courtesy switch circuit | DOOR COURTESY SWITCH CIRCUIT |
| 2. Body ECU (Main) | - |
Fog light System
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| Fog light does not come on with light control switch HEAD (Headlight is normal) | 1. FOG fuse | - |
| 2. Fog light switch | FOG LIGHT ASSEMBLY | |
| 3. Engine room junction block relay circuit | - | |
| 4. Wire harness | - | |
| Fog light does not come on with light control switch HEAD (Headlight does not normal) | 1. Other parts* | - |
| 2. Wire harness | - | |
| Only one light does not come on | 1. Bulb | - |
| 2. Wire harness | - |
Turn signal and hazard warning light system
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| Hazard warning light and turn signal light do not come on | 1. ECU-IG2 fuse | - |
| 2. TURN HAZ fuse | - | |
| 3. Ignition switch | - | |
| 4. Turn signal flasher relay | ON-VEHICLE INSPECTION | |
| 5. Wire harness | - | |
| Hazard warning light does mot come on (turn is normal) | 1. Hazard warning switch | HAZARD WARNING SWITCH |
| 2. Wire harness | - | |
| Turn signal light does not light up (hazard warning light is normal) | 1. Turn signal switch | INSPECTION |
| 2. Wire harness | - | |
| Turn signal light does not light up in one direction | 1. Turn signal switch | INSPECTION |
| 2. Wire harness | - | |
| Only one light does not light up | 1. Bulb | - |
| 2. Wire harness | - |
Room light System
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| All light do not come on | 1. DOME fuse | - |
| 2. DOME relay | - | |
| 3. Body ECU (Main) | - | |
| Light does not come on when driver door is opened | 1. Driver door courtesy switch | FRONT DOOR COURTESY SWITCH |
| 2. Wire harness side | - | |
| Light does not come on when passenger door is opened | 1. Passenger door courtesy switch | FRONT DOOR COURTESY SWITCH |
| 2. Wire harness side | - | |
| Light does not come on when rear-right door is opened | 1. Rear-right door courtesy switch | REAR DOOR COURTESY SWITCH |
| 2. Wire harness side | - | |
| Light does not come on when rear-left door is opened | 1. Rear-left door courtesy switch | REAR DOOR COURTESY SWITCH |
| 2. Wire harness side | - | |
| Only one of bulbs comes on | Bulb | - |
| Illumination does not fade out when all doors are closed | 1. Courtesy switch | FRONT DOOR COURTESY SWITCH |
| 2. Wire harness | - | |
| 3. Body ECU (Main) | - | |
| Illumination does not fade out immediately when ignition switch is turned to ACC or ON within 15 seconds after all doors are closed | 1. ACC fuse | - |
| 2. ECU-IG1 fuse | - | |
| 3. Ignition switch | - | |
| 4. Wire harness | - | |
| 5. Body ECU (Main) | - | |
| Illumination does not fade out immediately when all doors are locked 15 seconds after they are closed | 1. Door unlock detection switch | DOOR UNLOCK DETECTION SWITCH CIRCUIT |
| 2. Wire harness | - | |
| Room light does not come on | 1. Bulb | - |
| 2. Room light | - | |
| 3. Rear personal light | REAR ROOM LIGHT ASSEMBLY | |
| 4. Wire harness | - | |
| Front personal light does not come on | 1. Bulb | - |
| 2. front personal light | PERSONAL LIGHT ASSEMBLY | |
| 3. Room light | PERSONAL LIGHT ASSEMBLY | |
| 4. Wire harness | - | |
| Rear room light does not come on | 1. Bulb | - |
| 2. Rear room light | REAR ROOM LIGHT ASSEMBLY | |
| 3. Wire harness | - | |
| Vanity light does not come on | 1. Bulb | - |
| 2. Vanity light | VANITY LIGHT | |
| 3. Wire harness | - | |
| Glove compartment light does not come on | 1. Bulb | - |
| 2. Glove compartment courtesy switch | GLOVE BOX LIGHT | |
| 3. Wire harness | - | |
| Courtesy light does not come on | 1. Bulb | - |
| 2. Door courtesy switch | FRONT DOOR COURTESY SWITCH | |
| 3. Wire harness | - | |
| Foot light does not come on | 1. Wire harness | - |
| 2. Bulb (LED) | - | |
| 3. Sub body ECU | - | |
| 4. Body ECU (Main) | - | |
| Center console spot light does not come on | 1. Wire harness | - |
| 2. Bulb (LED) | - | |
| 3. Sub body ECU | - | |
| Side step light and outer foot light does not come on | 1. Wire harness | - |
| 2. Bulb (LED) | - | |
| 3. Sub body ECU | - | |
| 4. Body ECU (Main) | - | |
| Inside door handle illumination does not come on | 1. Wire harness | - |
| 2. Bulb (LED) | - | |
| 3. Sub body ECU | - | |
| 4. Body ECU (Main) | - |
Back-up light system
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| Back-up light does not come on | 1. GAUGE 2 fuse | - |
| 2. Bulb | - | |
| 3. Ignition switch | - | |
| 4. Wire harness | - | |
| Back-up light does not come on | 1. Park / neutral position switch | PARK / NEUTRAL POSITION SWITCH |
| 2. Wire harness | - | |
| Only one light does not come on | 1. Bulb | - |
| 2. Wire harness | - |
Stop light system
SYMPTOMS REFERENCE
| Symptom | Suspected area | See reference |
|---|---|---|
| Stop light does not come on | 1. STOP fuse | - |
| 2. Stop light switch | STOP LIGHT SWITCH | |
| 3. Wire harness | - | |
| 4. Sub body ECU | - | |
| Stop light always come on | 1. Stop light switch | STOP LIGHT SWITCH |
| 2. Wire harness | - | |
| 3. Sub body ECU | - | |
| Only one light always come on | Wire harness | - |
| Only one light does not come on | 1. Bulb | - |
| 2. Wire harness | - |