Circuit description
WARNING: This page is about a different car, the 2014 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.
The MIL is used for displaying the vehicle malfunction detected by the engine control computer. When the ignition switch is turned to ON, the MIL circuit is supplied with power, and the MIL illuminates. Operation of the MIL can be visually checked. When the ignition switch is turned to ON, the MIL illuminates. After engine has started, it goes off. When the MIL remains lit or unlit, perform the following troubleshooting.