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.
Inspect the fuses and relays related to the system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Illuminated entry system does not operate | Engine switch (for 1WW)* | |
| Engine switch (for 1ZR-FAE)* | ||
| Engine switch (for 2ZR-FAE)* | ||
| CAN communication system | ||
| Entry and start system (for entry function) | ||
| Door courtesy switch circuit | ||
| Back door courtesy switch circuit | ||
| Front door with motor lock assembly (door unlock detection switch) | ||
| Rear door with motor lock assembly (door unlock detection switch) | ||
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - |
*: w/ Entry and Start System
| Symptom | Suspected Area | See page |
|---|---|---|
| Courtesy light does not turn on (battery saving control system [interior light auto cut function] is normal) | Courtesy light bulb | - |
| Front door courtesy light switch assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Battery saving function (basic function) does not operate | Door courtesy switch circuit | |
| Back door courtesy switch circuit | ||
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Battery saving function (interior light auto cut function) does not operate | Light cut relay | |
| Harness or connector | - | |
| Main body ECU (instrument panel junction block assembly) | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Vanity light does not operate (battery saving control system [interior light auto cut function] is normal) | Vanity light | |
| Visor assembly | ||
| Harness or connector | - | |
| Map light (in roof console box) does not operate (battery saving control system [interior light auto cut function] is normal) | Illumination circuit | |
| Map light bulb | ||
| Main body ECU (instrument panel junction block assembly) | - | |
| Harness or connector | - | |
| No. 1 room light does not operate (battery saving control system [interior light auto cut function] is normal) | Illumination circuit | |
| No. 1 room light bulb | ||
| Main body ECU (instrument panel junction block assembly) | - | |
| Harness or connector | - | |
| No. 2 room light does not operate (battery saving control system [interior light auto cut function] is normal) | No. 2 room light bulb | |
| No. 2 room light assembly | ||
| Back door lock assembly | ||
| Harness or connector | - | |
| Glove box light does not operate | Glove box light | |
| Harness or connector | - | |
| No. 1 interior illumination light assembly does not operate | Footwell light circuit | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Console box illumination light assembly does not operate* | Footwell light circuit | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Harness or connector | - |
*: w/ Console Box Lid