Stoplamps

Stoplamps

Overview

The stoplamp system consists of:

- Stoplamp switch

- Rear lamp assemblies

- High mounted stoplamp

- BCM (Body Control Module)

The stoplamp switch is located on the brake pedal assembly. Voltage is supplied to the rear lamps and high mounted stoplamp when the brake pedal is applied.

System Operation

System Diagram





Stoplamps

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

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

The voltage from the stoplamp switch also passes through the BCM (Body Control Module) fuse 31 (5A) and is routed to the TBC (Trailer Brake Control) module connector on one circuit and for a customer access use on another circuit.

Component Description

Stoplamp Switch

The stoplamp switch is a normally open switch and is provided voltage at all times. When the brake pedal is applied, the switch closes and routes voltage to the BCM (Body Control Module).