UConnect Access - Operation

UCONNECT ACCESS

The two switch buttons on the inside rear view mirror identified with ASSIST and 9-1-1 labels in vehicles equipped with the optional Uconnect(TM) Access system provide active control of the one-touch 9-1-1 calling and roadside assistance calling features. The ASSIST button behavior is dependent upon the Uconnect(TM) Assist or Advantage subscription status. If either subscription is active, pressing the ASSIST allows the user to contact the Chrysler Customer Care Center, the Uconnect(TM) Customer Care Center for Uconnect(TM) Access related issues or the Roadside Assistance Call Center. If both subscriptions are inactive, only the Chrysler Customer Care Center or the Roadside Assistance Call Center may be contacted. The 9-1-1 button is enabled with or without a subscription. These switches provide a resistor multiplexed input to the Local Interface Network (LIN) slave node integral to the inside rear view mirror.

The LIN slave node sends an electronic switch press message to the LIN master node integral to the Body Control Module (BCM) (also known as the Common Body Controller/CBC). The BCM relays the message over the Controller Area Network - Interior High Speed (CAN-IHS) data bus, where it is retrieved by the Radio Receiver Module (RRM) (also known as the radio or the head unit). There is also an ASSIST soft button available in a menu of the RRM that provides a direct input to the Uconnect(TM) Access system.

The Light Emitting Diode (LED) indicator between the push buttons provides an indication of the status of the Uconnect(TM) Access embedded cellular device. Any fault indication is accompanied by a pop up screen in the RRM (also known as the radio or the head unit) electronic display. The following indications are provided whenever the status of the ignition switch is On or Accessory:

- Solid Green - No active call.
- Flashing Green - A call is active.
- Solid Red - A CAN, embedded cellular device or cellular antenna fault has been detected.
- Off - No power supply to the rear view mirror.

If a Bluetooth(TM) phone is Short Message Service (SMS) text message capable and compatible with the Uconnect(TM) Access system (see the Uconnect(TM) web site for a phone compatibility list), a Uconnect(TM) Advantage subscription provides an enhanced SMS text message free form dictation feature to compose a response when a text message is received. The call or SMS text message is relayed to the Bluetooth(TM) transceiver embedded within the RRM. The Bluetooth(TM) transceiver then instructs the RRM to announce the incoming call or message. The vehicle operator presses the Uconnect(TM) Phone button in the EVIC switch pod or the soft button that will appear in the RRM display to accept the message and dictate a response.

If the vehicle has had the optional Uconnect(TM) Mobile application (also known as app) downloaded, installed and enabled on their smart phone the Uconnect(TM) Advantage subscription can provide remote door locking and unlocking, remote starting and remote horn and lights features. In the Uconnect(TM) Access system the Mobile app on the smart phone calls the RRM in the vehicle, the RRM communicates through electronic messages over the Controller Area Network - C (CAN-C) data bus with the Radio Frequency Hub Module (RFHM) (also known as the RF Hub) and the RFHM communicates over the CAN-C bus with the Body Control Module (BCM) (also known as the Common Body Controller/CBC) to achieve the requested remote features. While the RRM uses electronic message communication over the CAN-C data bus and the CAN - Interior High Speed (CAN-IHS) data bus, the RRM is not a CAN gateway.

The Uconnect(TM) Advantage subscription also enables hands-free mobile Bing(TM) local search and navigation capabilities.

The hard wired circuits between components related to the RRM and the Uconnect(TM) Access system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin out information and location views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods will not prove conclusive in the diagnosis of the RRM or the electronic controls or communication between modules and other devices that provide some features of the Uconnect(TM) Access system. The most reliable, efficient, and accurate means to diagnose the RRM or the electronic controls and communication related to Uconnect(TM) Access system operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.