SECTION 417-01: Exterior Lighting
| 2014 Flex Workshop Manual
|
DESCRIPTION AND OPERATION
| Procedure revision date: 05/02/2013
|
Overview
The fog lamp system consists of:
The fog lamps can be turned on when the ignition is in RUN or ACCESSORY and the headlamp switch is in the headlamp, parking lamp or autolamp positions. The fog lamps are turned off when the high beams are active.
The fog lamp switch is integrated into the headlamp switch.
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 BCM . When the position indicates FOG LAMPS ON and the parking lamps are on (either from manual control of the headlamp switch or the autolamp system), the BCM provides voltage to the front fog lamps. |
| Flash-to-pass request | SCCM | Indicates to the BCM a request for the high beams or flash-to-pass. When either are active, the front fog lamps are off. |
Fog Lamps
The SCCM monitors the fog lamp switch and sends a headlamp switch status message over the HS-CAN to the BCM to indicate the fog lamp request.
When the BCM receives an input from the SCCM indicating a request for the fog lamps, the BCM provides ground to the fog lamp relay (integrated into the BCM ). When the fog lamp relay is energized, voltage is routed to the fog lamps.