Section 133 (Electronic Control Modules (Service Information)): Radio: Operation

WARNING: This page is about a different car, the 2020 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The radio 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. For additional information on the operation of the vehicles radio/media system in the vehicle, see the heading for the appropriate audio system option in the User Guide or the Owner Manual. See the Uconnect® web site (https://www.driveuconnect.com/ ) for more information, or refer to the Owner's link on the vehicle brand web site for copies of those publications.

The radio uses a left rear quarter glass antenna for FM2/Digital Audio Broadcast signal reception, if equipped, and, depending upon vehicle optional equipment, a roof mounted combination antenna that can receive AM/FM, Global Positioning System (GPS), satellite radio and cellular telephone signals.

Depending upon the audio system options, a radio can play music 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® streaming, refer to the Uconnect® web site (https://www.driveuconnect.com/ ) for compatibility.

NOTE:

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.