Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
HINT
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.
Interior Light System
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Front personal lights do not illuminate | Bulb | - |
| DOME fuse | - | |
| Overhead junction block (Personal light) | PERSONAL LIGHT | |
| Wire harness | - | |
| Rear personal lights do not illuminate | DOME fuse | - |
| Rear room light assembly (Personal light) | ROOM LIGHT | |
| Wire harness | - | |
| Seat illumination does not illuminate | Bulb | - |
| DOME fuse | - | |
| Seat illumination circuit | SEAT ILLUMINATION CIRCUIT | |
| Interior light switch signal circuit | INTERIOR LIGHT SWITCH SIGNAL CIRCUIT | |
| Rear room light assembly | ROOM LIGHT | |
| Overhead junction block (Interior light switch) | PERSONAL LIGHT | |
| Main body ECU RH (Cowl side junction block RH) | - | |
| Main body ECU LH (Cowl side junction block LH) | - | |
| Door courtesy lights do not illuminate | DOME fuse | - |
| Door courtesy light | DOOR COURTESY LIGHT | |
| Door courtesy switch circuit | DOOR COURTESY SWITCH CIRCUIT | |
| Interior light switch signal circuit | INTERIOR LIGHT SWITCH SIGNAL CIRCUIT | |
| Overhead junction block (Interior light switch) | PERSONAL LIGHT | |
| Main body ECU RH (Cowl side junction block RH) | - | |
| Shift illumination does not illuminate | DOME fuse | - |
| Shift illumination circuit | SHIFT ILLUMINATION CIRCUIT | |
| Overhead junction block | PERSONAL LIGHT | |
| Main body ECU LH (Cowl side junction block LH) | - | |
| Main body ECU RH (Cowl side junction block RH) | - | |
| Glove box light does not illuminate | ACC fuse | - |
| Glove box light | GLOVE BOX LIGHT | |
| Wire harness | - | |
| Footwell lights do not illuminate | DOME fuse | - |
| Footwell light | FOOTWELL LIGHT | |
| Footwell light circuit | FOOTWELL LIGHT CIRCUIT | |
| Main body ECU RH (Cowl side junction block RH) | - | |
| Register illumination does not illuminate | PANEL fuse | - |
| Register illumination | REGISTER LIGHT | |
| Wire harness | - | |
| Console box light does not illuminate | ACC fuse | - |
| Console box light | CONSOLE BOX LIGHT | |
| Wire harness | - | |
| Luggage compartment room light does not illuminate | Bulb | - |
| DOME fuse | - | |
| Luggage compartment room light | LUGGAGE COMPARTMENT ROOM LIGHT | |
| Wire harness | - | |
| Vanity light does not illuminate | Bulb | - |
| DOME fuse | - | |
| Visor assembly | - | |
| Wire harness | - | |
| Battery saving function does not operate | Main body ECU LH (Cowl side junction block LH) | - |
| Main body ECU RH (Cowl side junction block RH) | - |