Field-Effect Transistor (FET) Protection
WARNING: This page is about a different car, the 2015 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
Field-Effect Transistor (FET) protection is used to protect the BCM output drivers from damage in the event an excessive current draw is detected on a BCM output. Each illumination circuit connected to the BCM is separately protected. Refer to the System Diagram to view the different groups of BCM non-networked illumination outputs. For a full description of Field-Effect Transistor (FET) protection, REFER to: Module Controlled Functions - System Operation and Component Description .