Daytime Running Light System: Component Description

PART DESCRIPTION

Part name	Description
BCM	Receives combination switch inputs via BCM combination switch reading function. Receives park brake applied input from the park brake switch. Receives engine running status from the ECM via CAN communication.
IPDM E/R	Receives daytime light request from the BCM and activates the daytime light relay.
Combination switch (lighting and turn signal switch)	Outputs lighting requests to the BCM.
Parking brake switch	Outputs parking brake status to the combination meter which forwards that information to the BCM via CAN communication.
ECM	Outputs engine running status to the BCM.