Daytime Running Lamps (DRL)

Daytime Running Lamps (DRL)

Overview

The DRL (Daytime Running Lamps) system consists of:

- Low beams (halogen headlamps)

- Turn lamps ( HID (High Intensity Discharge) headlamps)

- BCM (Body Control Module)

NOTE: DRL (Daytime Running Lamps) is standard on all Canadian vehicles and available on some fleet vehicles.

NOTE: The DRL (Daytime Running Lamps) is not a programmable parameter for this vehicle.

The DRL (Daytime Running Lamps) system operates the low beam headlamps at a reduced intensity (vehicles with halogen headlamps) or the front turn lamps at full intensity (not flashing) (vehicles with HID (High Intensity Discharge) headlamps).

System Operation

System Diagram





Daytime Running Lamps (DRL)

The DRL (Daytime Running Lamps) system utilizes the existing circuitry and components from the headlamp or the turn lamp system.

The BCM (Body Control Module) monitors the ignition status (ignition switch for vehicles without IA (Intelligent Access) or the RFA (Remote Function Actuator) module for vehicles with IA (Intelligent Access)), the headlamp switch and autolamp status, and the transmission range status from the PCM (Powertrain Control Module).

Based on the input, the BCM (Body Control Module) activates the DRL (Daytime Running Lamps).

The DRL (Daytime Running Lamps) are activated when:

- the ignition is in RUN,

- the headlamps have not been turned on by the autolamp system or the headlamp switch, and

- the transmission is not in PARK.