Description And Operation: Operation
The Security Gateway Module (SGW) is the Controller Area Network (CAN) gateway between the radio, Telematics modules, Data Link Connector (DLC) and the other vehicle CAN modules. An SGW failure could prevent the radio from powering up, Telematics module from communicating or a scan tool from communicating with the vehicle. For additional information on the SGW, Refer to: SECURITY GATEWAY MODULE - DESCRIPTION AND OPERATION .
The RRM becomes operational when it receives a wake up signal over the Controller Area Network - Interior High Speed (CAN IHS) data bus indicating the status of the ignition switch is ON or Accessory. Hardwired circuitry connects the RRM to the electrical system of the vehicle. These hardwired circuits are integral to several wire harnesses, which routes throughout the vehicle and retained by many different methods. These circuits may be connected to each other and to the vehicle electrical system through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds. For proper wire repair, refer to: WIRE SPLICING and connector repair procedures, Refer to: REMOVAL and Refer to: INSTALLATION .
For additional information on the operation of the radio or media system in the vehicle, read the heading for the appropriate audio system option in the User Guide or the Owner Manual. Consult the Uconnect® web site (https://www.driveuconnect.com/ ) for more information, or refer to the For Owners link on the vehicle brand web site for copies of those publications.
The RRM uses a roof mounted combination antenna that can receive AM/FM/FM2, Global Positioning System (GPS) and Satellite Digital Audio Radio Service (SDARS) radio signals.
Depending upon the audio system options, the RRM can play audio from many different media sources. The media can be played by connecting the source to the audio system via a 3.5 millimeter auxiliary (AUX) port, a Universal Serial Bus (USB) port or through wireless Bluetooth® audio streaming. Refer to the Uconnect® web site (https://www.driveuconnect.com/ ) for compatibility information.
USB devices (for example, camera memory USB adaptors, USB drives and others, excluding Apple products) must comply with the MSD (Mass Storage Device) standard. This remote USB port can provide power to the inserted device.
The Security Gateway Module (SGW) is in the audio and Telematics systems to provide security against certain types of attacks and threats from the scan tool, Telematics and entertainment buses, which can put the rest of the vehicle's buses at risk of intrusion. The SGW lies electrically between the vehicle on one side, and the Data Link Connector (DLC), Telematics and entertainment systems on the other side. The main function is to gate messages from one bus to another. The SGW monitors the B(+) Feed, switched ignition feed, CAN circuits, software and hardware for any concerns.