Note
If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.
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 |
|---|---|---|
| Interior light control does not operate normally. | Front door courtesy switch circuit | |
| Rear door courtesy switch circuit | ||
| Luggage compartment door courtesy switch circuit | ||
| Door unlock detection switch circuit | ||
| IG signal circuit | ||
| ACC signal circuit | ||
| Interior light circuit | ||
| Main body ECU (Multiplex network body ECU) | ||
| Only front interior light does not illuminate. | Roof console box assembly | |
| Only rear interior light does not illuminate. | Spot light assembly | |
| Roof console box assembly | ||
| Harness or connector | - | |
| Power switch illumination does not illuminate. | CAN communication system (w/o Central Gateway ECU) | |
| CAN communication system (w/ Central Gateway ECU) | ||
| Power switch illumination circuit | ||
| Certification ECU (Smart key ECU assembly) | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Only one footwell light does not illuminate (for Front Side). | Harness or connector | - |
| No. 1 interior illumination light assembly | ||
| Only one footwell light does not illuminate (for Rear Side). | 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 | ||
| Luggage compartment 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 (w/o Central Gateway ECU) | |
| CAN communication system (w/ Central Gateway ECU) | ||
| Main body ECU (Multiplex network body ECU) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Only one ambient light does not illuminate. (for Front Door) | Harness or connector | - |
| Front door trim board sub-assembly | ||
| Only one ambient light does not illuminate. (for Rear Door) | Harness or connector | - |
| Rear door trim board sub-assembly | ||
| Ambient light control does not operate normally. | Front door courtesy switch circuit | |
| Rear door courtesy switch circuit | ||
| Luggage compartment door courtesy switch circuit | ||
| Door unlock detection switch circuit | ||
| IG signal circuit | ||
| ACC signal circuit | ||
| Ambient light circuit | ||
| Main body ECU (Multiplex network body ECU) | ||
| Ambient illumination light dimmer control does not operate. | CAN communication system (w/o Central Gateway ECU) | |
| CAN communication system (w/ Central Gateway ECU) | ||
| Main body ECU (Multiplex network body ECU) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Ambient light control does not operate normally. | Front door courtesy switch circuit | |
| Rear door courtesy switch circuit | ||
| Luggage compartment door courtesy switch circuit | ||
| Door unlock detection switch circuit | ||
| IG signal circuit | ||
| ACC signal circuit | ||
| Ambient light circuit | ||
| Main body ECU (Multiplex network body ECU) | ||
| Ambient light dimmer control does not operate. | CAN communication system (w/o Central Gateway ECU) | |
| CAN communication system (w/ Central Gateway ECU) | ||
| 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 | ||
| Luggage compartment door courtesy switch circuit | ||
| Door unlock detection switch circuit | ||
| IG signal circuit | ||
| ACC signal circuit | ||
| Interior light auto cut circuit | ||
| Main body ECU (Multiplex network body ECU) |
| Symptom | Suspected Area | See page |
|---|---|---|
| All the interior lights that receive power via the roof console box assembly do not illuminate. | Interior light power source circuit | |
| Main body ECU (Multiplex network body ECU) | ||
| All the interior lights that receive power via the roof console box assembly do not illuminate. (Front personal lights, front interior lights, rear personal lights and rear interior light illuminate.) | Roof console box assembly | |
| Harness or connector | - | |
| Front personal lights, front interior light, rear personal lights and rear interior light do not illuminate. | Roof console box assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Front personal light does not illuminate. | Roof console box assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Rear personal light does not illuminate. | Spot light assembly | |
| Roof console box 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 |
|---|---|---|
| Spot light does not illuminate. | Inner rear view mirror assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Front door courtesy light LH does not illuminate. | Bulb | - |
| Courtesy light assembly (for Front LH) | ||
| Front door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | ||
| Front door courtesy light RH does not illuminate. | Bulb | - |
| Courtesy light assembly (for Front RH) | ||
| Front door courtesy switch circuit | ||
| Harness or connector | - | |
| Instrument panel junction block assembly | ||
| Main body ECU (Multiplex network body ECU) | ||
| Rear door courtesy light LH does not illuminate. | Bulb | - |
| Courtesy light assembly (for Rear LH) | ||
| Rear door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | ||
| Rear door courtesy light RH does not illuminate. | Bulb | - |
| Courtesy light assembly (for Rear RH) | ||
| Rear door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) |
| Symptom | Suspected Area | See page |
|---|---|---|
| Glove box light does not illuminate. | Glove box light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Console box light does not illuminate. | Console box illumination light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Luggage compartment room light does not illuminate. | Bulb | - |
| No. 1 luggage compartment light assembly | ||
| Luggage compartment door courtesy switch circuit | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Cigarette lighter light does not illuminate. | Harness or connector | - |
| Cigarette lighter bezel stay |
| Symptom | Suspected Area | See page |
|---|---|---|
| All instrument panel illumination lights do not come on. | PANEL fuse | - |
| Instrument panel illumination circuit | ||
| Main body ECU (Multiplex network body ECU) |