Daytime Running Lamps

Vehicles equipped with this option or manufactured for sale in Canada illuminate the Light Emitting diode (LED) bulbs of both front combination turn/park lamp units when the engine is running, the parking brake is released and the exterior lamps are turned OFF. The BCM must be programmed appropriately for this feature to be enabled. Once enabled, anytime the BCM receives electronic messages over the CAN data bus from the PCM indicating the engine is running, a hardwired multiplex input from the headlight switch indicating the status of the headlight switch is OFF and a hardwired input from the park brake switch indicating that the parking brake is released, the BCM provides an output to the proper bulb filaments through the right and left front turn signal feed circuits to produce illumination at the proper intensity.