Electronic Vehicle Info Center Description - Chrysler Concorde 2004 Service Manual

8M - 10 MESSAGE SYSTEMS
ELECTRONIC VEHICLE INFO
CENTER
DESCRIPTION
The Electronic Vehicle Information Center (EVIC)
is located in the overhead console on models
equipped with this option. The EVIC module features
a large Vacuum Fluorescent Display (VFD) screen for
displaying information, and back-lit push button
function switches labeled C/T (compass/temperature),
RESET, STEP, and MENU.
The EVIC module contains a central processing
unit and interfaces with other electronic modules in
the vehicle over the Programmable Communications
Interface (PCI) data bus network. The PCI data bus
network allows the sharing of sensor information.
This helps to reduce wire harness complexity, reduce
internal controller hardware, and reduce component
sensor current loads. At the same time, this system
provides increased reliability, enhanced diagnostics,
and allows the addition of many new feature capabil-
ities.
The EVIC includes the following display options:
• Compass and temperature - provides the out-
side temperature and one of eight compass readings
to indicate the direction the vehicle is facing.
• Average fuel economy - shows the average
fuel economy since the last trip computer reset.
• Distance to empty - shows the estimated dis-
tance that can be travelled with the fuel remaining
in the fuel tank. This estimated distance is computed
using the average miles-per-gallon from the last 30
gallons of fuel used.
• Trip odometer - shows the distance travelled
since the last trip computer reset.
• Elapsed time - shows the accumulated igni-
tion-on time since the last trip computer reset.
• Distance to service - shows the distance
remaining until the next scheduled service interval.
• Tire Pressure - shows tire pressure in each
road tire.
• Blank screen - the EVIC compass/temperature/
trip computer VFD is turned off.
The EVIC "Menu" push button provides the vehicle
operator with a user interface, which allows the
selection of several optional customer programmable
electronic features to suit individual preferences.
Refer to ELECTRONIC VEHICLE INFORMA-
TION CENTER PROGRAMMING in the Service
Procedures section of this group for more information
on the customer programmable feature options.
If the vehicle is equipped with the optional Univer-
sal Transmitter, the EVIC will also display messages
and an icon indicating when the Universal Transmit-
ter is being trained, which of the three transmitter
buttons is transmitting, and when the transceiver is
cleared.
If the vehicle is equipped with the optional Tire
Pressure Monitoring System, the EVIC will also
display messages and an icon indicating when the
tire air pressure falls below a given set-point, and
which of the five tires is transmitting the low pres-
sure warning, and when the condition is cleared.
Refer to the Tires/Wheels section of this manual for
complete Tire Pressure Monitoring System descrip-
tion. Refer to this section of the service manual for
EVIC modules function description for the Tire Pres-
sure Monitoring.
NOTE: Some 300M vehicles use a different recom-
mended tire pressure (tire specified). For this rea-
son, anytime a EVIC module is removed or replaced
a DRB III scan tool must be used to set/verify that
the correct tire pressure set-point is programmed in
the EVIC module. Failure to do so could result in
incorrect tire pressure monitoring set points.
Data input for all EVIC functions, including VFD
dimming level, is received through PCI data bus
messages. The EVIC module uses its internal pro-
gramming and all of its data inputs to calculate and
display the requested data. If the data displayed is
incorrect, perform the
described in this group. If these tests prove inconclu-
sive, the use of a DRB III scan tool and the proper
Diagnostic Procedures manual are recommended for
further testing of the EVIC module and the PCI data
bus.
The EVIC module cannot be repaired, and is avail-
able for service only as a unit. This unit includes the
push button switches and the plastic module. If any
of these components is faulty or damaged, the com-
plete EVIC module must be replaced. The incandes-
cent bulbs used for EVIC push button back-lighting
and the lens are available for service replacement.
DESCRIPTION - COMPASS
While in the compass/temperature mode, the com-
pass will display the direction in which the vehicle is
pointed using the eight major compass headings
(Examples: north is N, northeast is NE). The self-cal-
ibrating compass unit requires no adjusting in nor-
mal use. The only calibration that may prove
necessary is to drive the vehicle in three complete
circles at 5 to 8 kilometers-per-hour (3 to 5 miles-per-
hour), on level ground, in not less than forty-eight
seconds. This will reorient the compass unit to its
vehicle.
The compass unit also will compensate for magne-
tism the body of the vehicle may acquire during nor-
mal use. However, avoid placing anything magnetic
directly on the roof of the vehicle. Magnetic mounts
LH
self-diagnostic tests as