Message Center - Service Information: Overview Dodge Dart PF

DESCRIPTION

The Electronic Vehicle Information Center (EVIC) features a driver-interactive display (14). The display is a Liquid Crystal Display (LCD), and is located directly in the center of the Instrument Cluster (IC) between the two gauge pods.

The EVIC displays many textual messages for vehicle systems support as well as your more common vehicle features, and options. These features and options include: Odometer (ODO), Trip A and Trip B odometer readouts, PRNDL, and compass heading, and ambient temperature readouts. The EVIC function buttons; located on the steering wheel can be used to scroll through the different features.

The EVIC system is comprised of several different components. Those components are

1. Instrument Cluster (IC)
2. Ambient Temperature Sensor
3. Remote Compass Module (RCM)
4. Body Control Module (BCM)
5. Controller Area Network (CAN) Data Bus
6. Local Interface Network (LIN) Data Bus

The EVIC display is part of the Instrument Cluster assembly and is not serviced as a separate component. If the display is inoperative the complete Instrument Cluster assembly must be replaced. Refer to REMOVAL .

OPERATION

The Electronic Vehicle Information Center (EVIC) uses both non-switched and ignition switched sources of battery current so that some of its features remain operational at any time, while others may only operate with the ignition switch in the "ON" position. When the ignition switch is turned to the "ON" position, the EVIC display will return to the last function being displayed before the ignition was turned to the "OFF" position.

The EVIC system is comprised of several different components that communicate over the Controller Area Network (CAN) and Local Interface Network (LIN) Data Buses. If the system is inoperative a scan tool and the appropriate diagnostic information must be used to diagnose the system.

Scheme 42

The EVIC function buttons are used to operate the different functions of the EVIC system. Pressing and releasing the MENU button (1) allows the driver to select the Compass/Temperature, Trip Computer, Personal Settings or System Status functions. The STEP button (4) is used to toggle through options or features of the Trip Computer, Personal Settings or System Status functions. Pressing and releasing the RESET button (3) allows the selection of setting or resetting of the function currently displayed at that time. Pressing and releasing the C/T (compass/temperature) button (5) will cause the EVIC to return to the compass/temperature display mode from any other mode.

On vehicles not equipped with a Navigational (NAV) Radio, with an 8.4 inch Integrated Center Stack Screen, the Remote Compass Module (RCM) is a separate stand alone module mounted under the headliner.

If the compass position sensor (Remote Compass Module) is inoperative and requires replacement, refer to MODULE, COMPASS, REMOVAL for the appropriate procedure.

On vehicles equipped with a Navigational (NAV) Radio, the compass feature is an integral part of the NAV system and does not require calibration or adjustment, and is only serviced as an assembly with the radio. For more information on the NAV Radio, refer to DESCRIPTION .

The ambient air temperature sensor is a variable resistor that operates on a 5 volt Direct Current (DC) reference signal sent by the Body Control Module (BCM). The ambient air temperature sensor is connected to the BCM through a two-wire lead and connector of the vehicle wire harness. The ambient air temperature sensor changes its internal resistance in response to changes in the outside air temperature, which either increases or decreases the reference signal voltage read by the BCM. The BCM converts and broadcasts the sensor data over the Controller Area Network (CAN) data bus, where it is read by the A/C-heater control, Powertrain Control Module (PCM) and other vehicle control modules.

The ambient air temperature sensor is diagnosed using a scan tool. Refer to the appropriate Testing & Diagnostics article in Engine Performance .

The ambient air temperature sensor cannot be adjusted or repaired and must be replaced if inoperative or damaged. Refer to SENSOR, AMBIENT TEMPERATURE, REMOVAL .

Scheme 43

1. Disconnect and isolate the negative battery cable.
2. Disconnect the wire harness connector (1) from the ambient air temperature sensor (4).
3. Remove the push pin (2) that secures the ambient air temperature sensor to the radiator crossmember (3) and remove the sensor.

The Electronic Vehicle Information Center (EVIC) control switch pod is a resistor multiplexed unit that receives source current from and provides hard wired inputs to the Local Interface Network (LIN) slave node circuitry of the LIN module or integral to the cruise control switch pod in the right spoke of the steering wheel spoke bezel. The LIN slave node circuitry communicates the switch states of the EVIC control switch pod, the remote radio switches, the horn switch and the heated steering wheel sensor (if equipped) over the LIN data bus to the LIN master node integral to the Steering Column Module (SCM) integral to the Steering Column Control Module (SCCM) mounting housing located on the top of the steering column below the clockspring. The SCM is also a gateway to the Controller Area Network (CAN) data bus.

The EVIC control switch pod contains four push buttons whose functions are

1. Down Arrow - Pressing and releasing the Down Arrow push button allows the operator to scroll downward through the various EVIC main menus and sub menus.
2. Left Arrow - Pressing and releasing the Left Arrow push button returns you to the previous sub menu or main menu.
3. Right Arrow - Pressing and releasing the Right Arrow (Select) push button allows the operator to navigate, select and reset items or settings in the currently displayed EVIC main menu or sub menu. Pressing and holding the Right Arrow (Select) push button for two seconds provides a global reset of all of those EVIC features that can be reset, whether currently displayed or not.
4. Up Arrow - Pressing and releasing the Up Arrow push button allows the operator to scroll upward through the various EVIC main menus and sub menus.

For vehicles equipped with the Uconnect® Hands-Free Communication System, the EVIC control switch pod contains two additional switch push buttons whose functions are

1. VR (Voice Recognition) - This switch button activates the Uconnect® Voice Command system.
2. Phone - This switch push button activates the Uconnect® Hands-Free Phone system.

The LIN slave node circuitry of the LIN module or the cruise control switch pod provides current for all of the switches and sensors on the rotating steering wheel as well as for the Light Emitting Diode (LED) back lighting of both the cruise control and the EVIC control switch pods. The SCM continually monitors all of the hard wired speed control switch circuits as well as the LIN bus data. The SCM will store a Signal Not Available (SNA) code for any LIN bus input errors. The SCM also communicates with other electronic modules over the CAN data bus. Therefore, any SCM DTC information can be retrieved using a diagnostic scan tool connected to the Data Link Connector (DLC).

The analog resistor multiplexed circuits of the EVIC control switch pod as well as the hard wired circuits between the switch pod and the speed control switch pod 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 LIN slave or master nodes, the SCM or the electronic controls and communication between modules and other devices that provide some features of the EVIC system. The most reliable, efficient, and accurate means to diagnose the EVIC control switch pod, the LIN slave or master nodes, the SCM or the electronic controls and communication related to EVIC system operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.

Scheme 44

Note. The following test confirms only correct Electronic Vehicle Information Center (EVIC) control switch functions. It does not test or confirm any of the Local Interface Network (LIN) slave node inputs, outputs or functions. LIN slave node testing requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.

1. Remove the Electronic Vehicle Information Center (EVIC) control switch pod from the steering wheel. Refer to «SWITCH, EVIC CONTROL, REMOVAL»(ref-646247-S29629373752014072800000) .
2. Disconnect the steering wheel wire harness connector from the back of the EVIC control switch pod.
3. Using an ohmmeter, test the resistance between the terminals of the switch as shown in the Electronic Vehicle Information Center Switch Tests table. ELECTRONIC VEHICLE INFORMATION CENTER SWITCH TESTS TABLE ELECTRONIC VEHICLE INFORMATION CENTER SWITCH TESTS SWITCH POSITION PINS (*RESISTANCE - OHMS) NO PUSH BUTTONS DEPRESSED 2 and 4 (18890) VR (WITH UCONNECT VOICE COMMAND ONLY) 2 and 4 (4890) PHONE (WITH UCONNECT HANDS-FREE PHONE ONLY) 2 and 4 (1530) UP ARROW 2 and 4 (340) RIGHT ARROW (SELECT) 2 and 4 (0) DOWN ARROW 2 and 4 (815) LEFT ARROW 2 and 4 (2680) *All resistance values are plus or minus 5%.
4. If the switch fails any of the tests, replace the ineffective EVIC control switch pod as required.