SECTION 417-01: Exterior Lighting
| 2014 Flex Workshop Manual
|
DESCRIPTION AND OPERATION
| Procedure revision date: 05/02/2013
|
Overview
The DRL system consists of:
NOTE: The DRL is a programmable parameter for this vehicle.
The DRL system operates the low beam headlamps at a reduced intensity (vehicles with halogen headlamps) or for vehicles with HID headlamps, the front fog lamps are turned on.
System Operation
Network Message Chart
BCM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Headlamp switch status | SCCM | Indicates the headlamp switch position to the BCM . When the position is indicated as off or in the parking lamps on position (or the autolamps on position and autolamp system has determined the lights need to be off), the BCM activates the DRL . |
| Selector lever (PRNDL) status | PCM | Indicates the gear selector lever position to the BCM . When the selector lever is in any position other than park, the BCM activates the DRL . |
DRL
The DRL system utilizes the existing circuitry and components from the headlamp or the fog lamp system.
The BCM monitors the ignition status (ignition switch without IA or start/stop switch with IA ), the headlamp switch and autolamp status, and the transmission range status from the PCM.
Based on the input, the BCM activates the DRL .
The DRL are activated when: