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. | Interior light circuit | |
| Main body ECU (Network gateway ECU) | ||
| Harness or connector | - | |
| Illuminated entry system does not operate with door opening or closing operation. | Door courtesy switch circuit | |
| Main body ECU (Network gateway ECU) | ||
| Harness or connector | - | |
| Illuminated entry system does not operate with door lock or unlock operation. | Door unlock detection switch circuit*1 | |
| Main body ECU (Network gateway ECU) | ||
| Harness or connector | - | |
| Illuminated entry system does not operate with engine switch*1 or ignition switch*2 operation. | IG signal circuit | |
| ACC signal circuit | ||
| Main body ECU (Network gateway ECU) | ||
| Harness or connector | - | |
| Engine switch illumination does not illuminate.*1 | CAN communication line | |
| Engine switch illumination circuit | ||
| Certification ECU (Smart key ECU assembly) | - |
*1: w/ Entry and Start System
*2: w/o Entry and Start System
| Symptom | Suspected Area | See page |
|---|---|---|
| Map light assembly does not illuminate. | Bulb | - |
| Map light assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Vanity light assembly does not illuminate. | Bulb | - |
| Visor assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Courtesy light does not illuminate. | Bulb | - |
| Courtesy light assembly | ||
| Front door courtesy light switch assembly | ||
| Door courtesy switch circuit | ||
| Door courtesy light circuit | ||
| Main body ECU (Network gateway ECU) | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Battery saving function does not operate. | IG signal circuit | |
| ACC signal circuit | ||
| Door courtesy switch circuit | ||
| Door unlock detection switch circuit*1 | ||
| CAN communication line | ||
| Main body ECU (Network gateway ECU) |
*1: w/ Entry and Start System
| Symptom | Suspected Area | See page |
|---|---|---|
| Ignition Key Cylinder Light does not illuminate.*1 | Ignition key cylinder light (Transponder key amplifier) | |
| Ignition key cylinder light circuit | ||
| Main body ECU (Network gateway ECU) | ||
| Harness or connector | - |
*1: w/o Entry and Start System
| 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 | - | |
| Instrument panel junction block assembly | ||
| Main body ECU (Network gateway ECU) |