DTC B1581-00: Ignition Switch Signal Error: General Description: General Description

"GATEWAY" is installed inside *"IGPM". It enables Communication between different Networks in vehicle CAN Networks. "GATEWAY" receives the IG key CAN signal data from the BCM controller and transfers the data to other Networks within the vehicle. "GATEWAY" diagnoses failures by comparing its own IG key inputs and the IG key CAN signal data from the BCM controller.