Technical Description (Comment)
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
When the shift position is judged to be in the P position based on the input of P range detection switch, OSS-ECU can turn OFF the vehicle power supply. If the vehicle power cannot be turned OFF (power supply mode ON to ACC is possible) when the shift is in P position, the P range detection switch or OSS-ECU may have a problem.