Exterior Lighting - System Operation and Component Description: Stoplamps
WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
System Diagram
| Item | Description |
|---|---|
| 1 | BCM |
| 2 | LH rear lamp assembly |
| 3 | RH rear lamp assembly |
| 4 | Stoplamp switch |
| 5 | High mounted stoplamp |
| 6 | (without push button start) |
| 7 | Ignition switch |
| 8 | Start/Stop switch |
| 9 | (with push button start) |
Stoplamps
The BCM monitors the input from the stoplamp switch. When the brake pedal is applied, voltage is routed to the BCM, indicating a request for the stoplamps. The BCM then supplies voltage to the stoplamps.
The BCM does not activate the stoplamps when the ignition is in OFF or ACC.
The BCM also provides Field Effect Transistor (FET) protection of the stoplamp output circuits. When an excessive current draw is detected, the BCM disables the affected circuit driver.
Refer to: Module Controlled Functions - System Operation and Component Description .