Glove box light: Diagnosis
The output has an overload protection that shuts the output off if the load is too high. This activates DTC B1220.
DTCs are not generated if the voltage is below 11V or during diagnostic communication.
NOTE:
When there is a fault in the interior lighting circuit, DTC B1220 can be generated (normally B1215) because the roof lamp (50F) is not electrically insulated from the reading and mirror lighting.