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 |
|---|---|---|
| Illuminated entry system does not operate normally. | DOME fuse | - |
| Front door courtesy switch circuit | ||
| Rear door courtesy switch circuit | ||
| Back door courtesy switch circuit | ||
| Door unlock detection switch circuit | ||
| IG signal circuit | ||
| ACC signal circuit | ||
| CAN communication system | ||
| Interior light circuit | ||
| Main body ECU (Multiplex network body ECU) | ||
| Only power switch illumination does not illuminate. | Power switch illumination circuit | |
| Certification ECU (Smart key ECU assembly) | - | |
| Main body ECU (Multiplex network body ECU) | ||
| Only front interior light does not illuminate. | Map light assembly | |
| Harness or connector | - | |
| Only rear interior light does not illuminate. | Bulb | - |
| Harness or connector | - | |
| Map light assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Only one footwell light does not illuminate. | Harness or connector | - |
| No. 1 Interior illumination light assembly | ||
| Footwell light control does not operate normally. | Front door courtesy switch circuit | |
| Rear door courtesy switch circuit | ||
| Back door courtesy switch circuit | ||
| Door unlock detection switch circuit | ||
| IG signal circuit | ||
| ACC signal circuit | ||
| Footwell light circuit | ||
| Main body ECU (Multiplex network body ECU) | ||
| Footwell light dimmer control does not operate. | CAN communication system | |
| Main body ECU (Multiplex network body ECU) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Battery saving function does not operate. | Front door courtesy switch circuit | |
| Rear door courtesy switch circuit | ||
| Back door courtesy switch circuit | ||
| IG signal circuit | ||
| ACC signal circuit | ||
| Interior light auto cut circuit | ||
| Interior light power source circuit | ||
| Main body ECU (Multiplex network body ECU) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Front personal light does not illuminate. | Bulb | - |
| Map light assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Rear interior light does not illuminate. | Bulb | - |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Center console spot light does not illuminate. | Map light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Vanity light does not illuminate. | Bulb | - |
| Visor assembly (Vanity light switch) | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Glove box light does not illuminate. | Glove box light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Courtesy light does not illuminate. | Bulb | - |
| Courtesy light assembly | ||
| Front door courtesy switch circuit | ||
| Harness or connector | - | |
| Instrument panel junction block assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Luggage compartment light does not illuminate. | Bulb | - |
| No. 2 room light assembly | ||
| Back door courtesy switch circuit | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| All of instrument panel illumination lights do not come on. (Taillights operate normally.) | PANEL fuse | - |
| Harness or connector | - |