Principles Of Operation

Stoplamps

Principles of Operation

The Body Control Module (BCM) monitors the input from the stoplamp switch. When the brake pedal is applied, voltage is routed to the BCM (Body Control Module), the PCM and (if equipped) the Remote Function Actuator (RFA) module. The BCM (Body Control Module) then supplies voltage to the stoplamps.

For Edge, the BCM (Body Control Module) uses a single output to control all of the stoplamps.

For MKX, the BCM (Body Control Module) uses 3 outputs to control all of the stoplamps and 2 outage circuits to detect a concern with the LH or RH rear stoplamps.

Field-Effect Transistor (FET) Protection

The Field-Effect Transistor (FET) protection strategy prevents module damage in the event of excessive current flow. For additional information of the FET (Field-Effect Transistor), refer to Body Control Systems.

The BCM (Body Control Module) FET (Field-Effect Transistor) protected output circuits for the stoplamp system are the high mounted stoplamp, the LH and RH rear stoplamp output circuits.