1. Visually check the bulb for blow out.
2. Check the bulb specification. 
3. Replace the bulb if it is found defective.
1. Remove the room light.
2. Measure the resistance between room light switch terminals.
|
Switch position |
Terminal No. |
Standard |
|
OFF |
— |
1 MΩ or more |
|
ON |
1 and 3 |
1.5±0.5 Ω |
|
DOOR |
2 and 3 |
1.5±0.5 Ω |
3. Connect terminal No. 3 to the battery positive terminal and terminal No. 1 and No. 2 to the battery ground terminal, and check room light operation.
|
Switch position |
Light status |
|
OFF |
Light OFF |
|
ON |
Light ON |
|
DOOR |
Light ON |
4. Replace the room light if it is found defective.