Note
Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly), refer to Service Bulletin.
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
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 | Link |
|---|---|---|
| All interior light control functions do not operate under any condition. | CXPI communication system | |
| Map light sub-assembly | ||
| Main body ECU (multiplex network body ECU) | ||
| Actuation area-linked control function does not operate when registered key is brought into any exterior detection area. | CAN communication system | |
| Entry and start system (for Entry Function) | ||
| Main body ECU (multiplex network body ECU) | ||
| Door lock/unlock-linked control function does not operate when doors are locked/unlocked. | Door unlock detection switch circuit | |
| Main body ECU (multiplex network body ECU) | ||
| Door open/close-linked control function does not operate when doors are opened/closed. | Door courtesy switch circuit | |
| Main body ECU (multiplex network body ECU) | ||
| Engine switch illumination does not illuminate. | Engine switch illumination circuit | |
| Certification ECU (smart key ECU assembly) | Refer to Service Bulletin | |
| Engine switch illumination does not blinking. | Certification ECU (smart key ECU assembly) | Refer to Service Bulletin |
| Power switch-linked control function does not operate when power switch is operated. | IG signal circuit | |
| ACC signal circuit | ||
| Main body ECU (multiplex network body ECU) | ||
| Shift position-linked control function does not operate when shift lever to P. | Electronic shift lever system | |
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| Map light LH or RH does not illuminate. | Map light sub-assembly | |
| Harness or connector | - | |
| Dome light does not illuminate. | CXPI communication system | |
| Map light sub-assembly | ||
| Harness or connector | - | |
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| Spot light does not illuminate. | Spot light assembly | |
| Harness or connector | - | |
| Map light sub-assembly | ||
| Spot lights do not operate according to rear power seat switch operation (w/ Rear Power Seat System) | CAN communication system | |
| Rear power seat switch |
| Symptom | Suspected Area | Link |
|---|---|---|
| Rear seat buckle illumination light RH does not illuminate. | Rear seat inner belt assembly | |
| Harness or connector | - | |
| Position control ECU assembly RH | ||
| Rear seat buckle illumination light LH does not illuminate. | Rear seat inner belt assembly LH | |
| Harness or connector | - | |
| Position control ECU assembly LH | ||
| Rear seat buckle illumination does not illuminate. | Rear multi operation panel system | |
| Rear power seat switch |
| Symptom | Suspected Area | Link |
|---|---|---|
| Rear seat buckle illumination light RH does not illuminate. | Rear seat inner with center belt assembly RH | |
| Harness or connector | - | |
| Rear seat buckle illumination light LH does not illuminate. | Rear seat inner belt assembly LH | |
| Harness or connector | - | |
| Rear seat buckle illumination does not illuminate. | Buckle illumination circuit | |
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| All door ambient illumination light does not illuminate. | Main body ECU (multiplex network body ECU) | |
| Front door trim board sub-assembly LH (front door inside handle illumination) does not illuminate. | Front door trim board sub-assembly LH (front door inside handle illumination) | |
| Harness or connector | - | |
| Front multiplex network door ECU LH | ||
| Front door trim board sub-assembly RH (front door inside handle illumination) does not illuminate. | Front door trim board sub-assembly RH (front door inside handle illumination) | |
| Harness or connector | - | |
| Front multiplex network door ECU RH | ||
| Rear door trim board sub-assembly LH (rear door inside handle illumination) does not illuminate. | Rear door trim board sub-assembly LH (rear door inside handle illumination) | |
| Harness or connector | - | |
| Rear multiplex network door ECU LH | ||
| Rear door trim board sub-assembly RH (rear door inside handle illumination) does not illuminate. | Rear door trim board sub-assembly RH (rear door inside handle illumination) | |
| Harness or connector | - | |
| Rear multiplex network door ECU RH | ||
| Front door trim board sub-assembly LH (armrest illumination) does not illuminate. | Front door trim board sub-assembly LH (armrest illumination) | |
| Harness or connector | - | |
| Front multiplex network door ECU LH | ||
| Front door trim board sub-assembly RH (armrest illumination) does not illuminate. | Front door trim board sub-assembly RH (armrest illumination) | |
| Harness or connector | - | |
| Front multiplex network door ECU RH | ||
| Rear door trim board sub-assembly LH (armrest illumination) does not illuminate. | Rear door trim board sub-assembly LH (armrest illumination) | |
| Harness or connector | - | |
| Rear multiplex network door ECU LH | ||
| Rear door trim board sub-assembly RH (armrest illumination) does not illuminate. | Rear door trim board sub-assembly RH (armrest illumination) | |
| Harness or connector | - | |
| Rear multiplex network door ECU RH | ||
| Front door trim board sub-assembly LH (ornament illumination) does not illuminate. | Front door trim board sub-assembly LH (ornament illumination) | |
| Harness or connector | - | |
| Front multiplex network door ECU LH | ||
| Front door trim board sub-assembly RH (ornament illumination) does not illuminate. | Front door trim board sub-assembly RH (ornament illumination) | |
| Harness or connector | - | |
| Front multiplex network door ECU RH | ||
| Rear door trim board sub-assembly LH (ornament illumination) does not illuminate. | Rear door trim board sub-assembly LH (ornament illumination) | |
| Harness or connector | - | |
| Rear multiplex network door ECU LH | ||
| Rear door trim board sub-assembly RH (ornament illumination) does not illuminate. | Rear door trim board sub-assembly RH (ornament illumination) | |
| Harness or connector | - | |
| Rear multiplex network door ECU RH |
| Symptom | Suspected Area | Link |
|---|---|---|
| Instrument panel ambient illumination light does not illuminate. | Ambient illumination light circuit | |
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| No. 1 luggage compartment light assembly does not illuminate. | No. 1 luggage compartment light assembly | |
| Harness or connector | - | |
| No. 2 luggage compartment light assembly does not illuminate. | No. 2 luggage compartment light assembly | |
| Harness or connector | - | |
| Luggage compartment light do not illuminate. | Harness or connector | - |
| Luggage closer motor assembly |
| Symptom | Suspected Area | Link |
|---|---|---|
| Glove box light does not illuminate. | Glove box light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | Link |
|---|---|---|
| Front footwell light (for Driver Side) does not illuminate. | No. 1 interior illumination light assembly (footwell light) | |
| Instrument panel junction block assembly | ||
| Harness or connector | - | |
| Front footwell light (for Front Passenger Side) does not illuminate. | No. 2 interior illumination light assembly (footwell light) | |
| Instrument panel junction block assembly | ||
| Harness or connector | - | |
| Rear footwell light RH does not illuminate. | No. 3 interior illumination light assembly RH (footwell light RH) | |
| Harness or connector | - | |
| Rear footwell light LH does not illuminate. | No. 3 interior illumination light assembly LH (footwell light LH) | |
| Harness or connector | - | |
| Footwell light does not illuminate. | Footwell light circuit | |
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| Front door courtesy light LH does not illuminate. | Courtesy light assembly (for Front LH Side) | |
| Door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (multiplex network body ECU) | ||
| Front door courtesy light RH does not illuminate. | Courtesy light assembly (for Front RH Side) | |
| Door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (multiplex network body ECU) | ||
| Rear door courtesy light LH does not illuminate. | Courtesy light assembly (for Rear LH Side) | |
| Door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (multiplex network body ECU) | ||
| Rear door courtesy light RH does not illuminate. | Courtesy light assembly (for Rear RH Side) | |
| Door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| All vanity light does not illuminate. | Map light sub-assembly | |
| Front vanity light LH does not illuminate. | Vanity light assembly (for Front LH Side) | |
| Harness or connector | - | |
| Visor assembly LH | ||
| Map light sub-assembly | ||
| Front vanity light RH does not illuminate. | Vanity light assembly (for Front RH Side) | |
| Harness or connector | - | |
| Visor assembly LH | ||
| Map light sub-assembly | ||
| Rear vanity light LH does not illuminate. | Vanity mirror assembly (for Rear LH Side) | |
| Harness or connector | - | |
| Map light sub-assembly | ||
| Rear vanity light RH does not illuminate. | Vanity mirror assembly (for Rear RH Side) | |
| Harness or connector | - | |
| Map light sub-assembly |
| Symptom | Suspected Area | Link |
|---|---|---|
| Console box illumination light does not illuminate. | Console box illumination light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | Link |
|---|---|---|
| Coin box light does not illuminate. | Coin box light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | Link |
|---|---|---|
| Meter hood illumination light does not illuminate. | Meter hood illumination light assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | Link |
|---|---|---|
| Cooling box light does not illuminate. | Cooling box light sub-assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | Link |
|---|---|---|
| All the interior lights that receive power via the DOME CUT relay do not illuminate. | Interior light auto cut circuit | |
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| Instrument panel register light (for Driver Side) does not illuminate. | No. 1 instrument panel register assembly | |
| Harness or connector | - | |
| Instrument panel register light (for Front Passenger Side) does not illuminate. | No. 2 instrument panel register assembly | |
| Harness or connector | - | |
| Instrument panel register light (for Center) does not illuminate. | Center instrument panel register assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | Link |
|---|---|---|
| Battery saving function does not operate. | CXPI communication system | |
| IG signal circuit | ||
| ACC signal circuit | ||
| Door courtesy switch circuit | ||
| Door unlock detection switch circuit | ||
| Interior light auto cut circuit | ||
| Main body ECU (multiplex network body ECU) |
| Symptom | Suspected Area | Link |
|---|---|---|
| No instrument panel illumination lights come on (taillights operate normally). | PANEL D fuse | - |
| PANEL P fuse | - | |
| Instrument panel junction block assembly (PANEL D relay) | ||
| Passenger side junction block assembly (PANEL P relay) | ||
| Harness or connector | - | |
| Main body ECU (multiplex network body ECU) | ||
| Combination meter assembly |