Chrysler 300M, Dodge Interpid. Manual — part 98

for an antenna, a repair order hat, or a funeral pro-
cession flag can exceed the compensating ability of
the compass unit if placed on the roof panel. Mag-
netic bit drivers used on the fasteners that hold the
overhead console assembly to the roof header can
also affect compass operation. If the vehicle roof
should become magnetized, the demagnetizing and
calibration procedures found in this group may be
required to restore proper compass operation.

DESCRIPTION - TEMPERATURE

The temperature displays the outside ambient tem-

perature in whole degrees. The temperature display
can be toggled from Fahrenheit to Celsius by select-
ing the desired U.S./Metric option from the customer
programmable

features

as

described

in

ELEC-

TRONIC

VEHICLE

INFORMATION

CENTER

PROGRAMMING in the Service Procedures section
of this group. The displayed temperature is not an
instant reading of conditions, but an average temper-
ature. It may take the thermometer display several
minutes to respond to a major temperature change,
such as driving out of a heated garage into winter
temperatures.

When the ignition switch is turned to the Off posi-

tion, the last displayed temperature reading stays in
the Body Control Module (BCM) unit memory. When
the ignition switch is turned to the On position
again, the EVIC will display the memory tempera-
ture for one minute; then update the display to the
current average temperature reading within five
minutes.

The temperature function is supported by an ambi-

ent temperature sensor. The sensor is mounted out-
side the passenger compartment near the front and
center of the vehicle, and is hard wired to the Body
Control Module (BCM). The BCM sends temperature
status messages to the EVIC module over the PCI
data bus network. The ambient temperature sensor
is available as a separate service item.

OPERATION

The EVIC is wired to both non-switched and igni-

tion 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 module VFD will return
to the last function being displayed before the igni-
tion was turned to the Off position.

The compass/temperature display is the normal

EVIC display. With the ignition switch in the On
position, momentarily depressing and releasing the
C/T (compass/temperature) push button switch will
cause the EVIC to return to the compass/tempera-
ture/trip computer display mode from any other

mode. While in the compass/temperature/trip com-
puter display mode, momentarily depressing and
releasing the Step push button will step through the
available trip computer display options.

The EVIC trip computer features several functions

that can be reset. The functions that can be reset
are: average fuel economy, trip odometer and elapsed
time. With the ignition switch in the On position and
with one of the functions of the trip computer that
can be reset currently displayed, depressing the
Reset push button twice within three seconds will
perform a global reset, and all of the trip computer
information that can be reset will be reset to zero.
With the ignition switch in the On position and the
function that is to be reset currently displayed,
momentarily depressing and releasing the Reset
push button once will perform a local reset, and only
the value of the displayed function will be reset to
zero. A global or local reset will only occur if the
function currently displayed is a function that can be
reset. The distance to service function can also be
reset using the local reset method, but it will reset
back to the Service Interval distance that is set in
the EVIC programmable features mode. Refer to
ELECTRONIC VEHICLE INFORMATION CEN-
TER PROGRAMMING in the Service Procedures
section of this group for more information on setting
the Service Interval.

For more information on the features, control func-

tions and setting procedures for the EVIC module,
see the owner’s manual in the vehicle glove box.

DIAGNOSIS AND TESTING - ELECTRONIC
VEHICLE INFORMATION CENTER

If the problem with the EVIC is an inaccurate or

scrambled display, refer to Self-Diagnostic Test in
the Diagnosis and Testing section of this group. If the
problem with the EVIC is incorrect Vacuum Fluores-
cent Display (VFD) dimming levels, use a DRB scan
tool and the proper Diagnostic Procedures manual to
test for the correct dimming message inputs being
received from the Body Control Module (BCM) over
the Programmable Communications Interface (PCI)
data bus. If the problem is a no-display condition,
use the following procedures. For complete circuit
diagrams, refer to Overhead Console in Wiring
Diagrams.

(1) Check the fused B(+) fuse in the junction block.

If OK, go to Step 2. If not OK, repair the shorted cir-
cuit or component as required and replace the faulty
fuse.

(2) Check for battery voltage at the fused B(+) fuse

in the junction block. If OK, go to Step 3. If not OK,
repair the open fused B(+) circuit to the fused B(+)
fuse in the PDC as required.

LH

MESSAGE SYSTEMS

8M - 11

ELECTRONIC VEHICLE INFO CENTER (Continued)

(3) Check the fused ignition switch output (run/

start) fuse in the junction block. If OK, go to Step 4.
If not OK, repair the shorted circuit or component as
required and replace the faulty fuse.

(4) Turn the ignition switch to the On position.

Check for battery voltage at the fused ignition switch
output (run/start) fuse in the junction block. If OK,
go to Step 5. If not OK, repair the open fused ignition
switch output (run/start) circuit to the ignition switch
as required.

(5) Turn the ignition switch to the Off position.

Disconnect and isolate the battery negative cable.
Remove the overhead console. Check for continuity
between the ground circuit cavity of the roof wire
harness connector for the EVIC module and a good
ground. There should be continuity. If OK, go to Step
6. If not OK, repair the open ground circuit to ground
as required.

(6) Connect the battery negative cable. Check for

battery voltage at the fused B(+) circuit cavity of the
roof wire harness connector for the EVIC module. If
OK, go to Step 7. If not OK, repair the open fused
B(+) circuit to the fused B(+) fuse in the junction
block as required.

(7) Turn the ignition switch to the On position.

Check for battery voltage at the fused ignition switch
output (run/start) circuit cavity of the roof wire har-
ness connector for the EVIC module. If OK, refer to
Self-Diagnostic Test in the Diagnosis and Testing
section of this group for further diagnosis of the
EVIC module and the PCI data bus. If not OK,
repair the open fused ignition switch output (run/
start) circuit to the fuse in the junction block as
required.

SELF-DIAGNOSTIC TEST

A self-diagnostic test is used to determine that the

EVIC module is operating properly, and that all PCI
data bus messages are being received for initial oper-
ation. Initiate the self-diagnostic test as follows:

(1) With the ignition switch in the Off position,

simultaneously depress and hold the C/T button and
the Reset button.

(2) Turn the ignition switch to the On position.
(3) Continue to hold both buttons depressed until

the EVIC software version information is displayed,
then release both buttons.

(4) Following completion of these tests, the EVIC

module will display one of the following messages:

• PASS SELF TEST - Momentarily depress and

release the Reset button to return to the compass/
temperature/trip computer display mode. The EVIC
module is working properly.

• FAILED SELF TEST - The EVIC module has

an internal failure. The EVIC module is faulty and
must be replaced.

• NOT RECEIVING J1850 MESSAGE - The

EVIC module is not receiving proper message input
through the PCI data bus. This can result from one
or more faulty electronic modules in the vehicle, or
from a faulty PCI data bus. The use of a DRB scan
tool and the proper Diagnostic Procedures manual
are required for further diagnosis.

NOTE: If the compass functions, but accuracy is
suspect, it may be necessary to perform a variation
adjustment. This procedure allows the compass
unit to accommodate variations in the earth’s mag-
netic field strength, based on geographic location.
Refer to Compass Variation Adjustment in the Ser-
vice Procedures section of this group.

NOTE: If the compass reading displays a blank, and
only “CAL” appears in the display, demagnetizing
may be necessary to remove excessive residual
magnetic fields from the vehicle. Refer to Compass
Demagnetizing in the Service Procedures section of
this group.

STANDARD PROCEDURE - TIRE PRESSURE
SYSTEM TEST

The following test can be used to verify two func-

tions. One, that the tire pressure sensors are trans-
mitting properly and two, the EVIC module is
receiving these transmissions accordingly.

(1) Retrain the tire sensors (Refer to 22 - TIRES/

WHEELS/TIRE

PRESSURE

MONITORING/SEN-

SOR - STANDARD PROCEDURE). The tire sensors
must be retrained in order to set the proper trans-
mitting time cycle (twice a minute), failure to retrain
the sensors will cause a much slower transmitting
time cycle (once a minute).

(2) Using the STEP button on the overhead con-

sole, scroll to the blank display, then press the
RESET button for five seconds, a beep will sound
indicating the start of this test. The vehicle icon and
transmission counters will now be displayed, (same
display as individual tire pressure except counters
replace tire pressure values).

(3) Upon entering the test mode, the EVIC will

clear the sensor counter and each time a sensor sig-
nal for a road tire is received, the EVIC will update
the counter value (vehicle must be driven at 25 mph
to transmit). The counter values should all read close
to the same value (± 5), except for the spare tire
counter. If any of the road tires display a difference
of more than five, this is a sign of a problem. Replace
the appropriate tire sensor and retest the system.
This test will continue until any of the overhead con-
sole buttons are pressed or the ignition is turned off.

8M - 12

MESSAGE SYSTEMS

LH

ELECTRONIC VEHICLE INFO CENTER (Continued)

NOTE: Pressing the RESET button during the test
will sound a beep and reset all the counter values
back to zero.

REMOVAL

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the overhead console from the head-

liner (Refer to 8 - ELECTRICAL/OVERHEAD CON-
SOLE - REMOVAL).

(3) Remove the four screws that secure the Elec-

tronic Vehicle Information Center (EVIC) module to
the overhead console housing (Fig. 8).

(4) Remove the EVIC module from the overhead

console housing.

NOTE: If the EVIC module is being replaced, the tire
pressure monitoring system must be programmed.
Refer to the tires/wheels section of this manual for
detailed instructions.

INSTALLATION

(1) Position the EVIC module onto the overhead

console housing.

(2) Install and tighten the four screws that secure

the EVIC module to the overhead console housing.
Tighten the screws to 0.9 N·m (8 in. lbs.).

(3) Install the overhead console onto the headliner

(Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE -
INSTALLATION).

(4) Reconnect the battery negative cable.

NOTE: If a new compass mini-trip computer has
been installed, the compass will have to be cali-
brated and the variance set. Refer to compass vari-
ation adjustment and compass calibration in the
service procedures section of this group for the
procedures.

NOTE: If the evic module is being replaced, the tire
pressure monitoring system must be programmed.
Refer to the tires/wheels section of this manual for
detailed instructions.

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

T

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.

UNIVERSAL TRANSMITTER

DESCRIPTION

On some LH models a Universal Transmitter is

standard factory-installed equipment. The universal
transmitter transceiver is integral to the Electronic
Vehicle Information Center (EVIC), which is located
in the overhead console. The only visible component
of the universal transmitter are the three transmit-
ter push buttons centered between the four EVIC
push buttons located just rearward of the EVIC dis-
play screen in the overhead console. The three uni-
versal transmitter push buttons are identified with
one, two or three light indicators so that they be eas-
ily identified by sight.

Each of the three universal transmitter push but-

tons controls an independent radio transmitter chan-
nel. Each of these three channels can be trained to
transmit a different radio frequency signal for the
remote operation of garage door openers, motorized
gate openers, home or office lighting, security sys-
tems or just about any other device that can be
equipped with a radio receiver in the 288 to 410
MegaHertz (MHz) frequency range for remote opera-
tion. The universal transmitter is capable of operat-
ing systems using either rolling code or non-rolling
code technology.

Fig. 8 Electronic Vehicle Information Center (EVIC)

Module

1 - OVERHEAD CONSOLE HOUSING
2 - EVIC MODULE
3 - VFD ILLUMINATION LAMPS
4 - SCREWS

LH

MESSAGE SYSTEMS

8M - 13

ELECTRONIC VEHICLE INFO CENTER (Continued)

The EVIC module displays messages and a small

house-shaped icon with one, two or three dots corre-
sponding to the three transmitter buttons to indicate
the status of the universal transmitter. The EVIC
messages are:

• Cleared Channels - Indicates that all of the

transmitter codes stored in the universal transmitter
have been successfully cleared.

• Training - Indicates that the universal trans-

mitter is in its transmitter learning mode.

• Trained - Indicates that the universal transmit-

ter has successfully acquired a new transmitter code.

• Transmit - Indicates that a trained universal

transmitter button has been depressed and that the
universal transmitter is transmitting.

The universal transmitter cannot be repaired, and

is available for service only as a unit with the EVIC
module. This unit includes the push button switches
and the plastic module. If any of these components is
faulty or damaged, the complete EVIC module must
be replaced.

OPERATION

The universal transmitter operates on a non-

switched source of battery current so the unit will
remain functional, regardless of the ignition switch
position. For more information on the features, pro-
gramming procedures and operation of the universal
transmitter, see the owner’s manual in the vehicle
glove box.

DIAGNOSIS AND TESTING - UNIVERSAL
TRANSMITTER

If the Universal Transmitter is inoperative, but the

Electronic Vehicle Information Center (EVIC) is oper-
ating normally, see the owner’s manual in the vehicle
glove box for instructions on training the Transmit-
ter. Retrain the Transmitter with a known good
transmitter as instructed in the owner’s manual and
test the Transmitter operation again. If the unit is
still inoperative, test the universal transmitter with
Radio Frequency Detector special tool (Fig. 9). If both
the Transmitter and the EVIC module are inopera-
tive, refer to Electronic Vehicle Information Cen-
ter Diagnosis and Testing in this group for further
diagnosis. For complete circuit diagrams, refer to
Wiring Diagrams. as described below:

(1) Turn the Radio Frequency (RF) Detector ON. A

“chirp” will sound and the green power LED will
light. If the green LED does not light, replace the
battery.

(2) Hold the RF detector within one inch of the

TRAINED universal transmitter and press any of the
transmitters buttons.

(3) The red signal detection LEDs will light and

the tool will beep if a radio signal is detected. Repeat
this test three times.

STANDARD PROCEDURE

STANDARD PROCEDURE - ERASING
UNIVERSAL TRANSMITTER CODES

To erase the universal transmitter codes, simply

hold down the two outside buttons until the red LED
begins to flash.

NOTE: Individual channels cannot be erased. Eras-
ing the transmitter codes will erase ALL pro-
grammed codes.

STANDARD PROCEDURE - SETTING
UNIVERSAL TRANSMITTER CODES

(1) Turn off the engine.
(2) Erase the factory test codes by pressing the

two outside buttons. Release the buttons when the
red light begins to flash (about 20 seconds).

(3) Choose one of the three buttons to train. Place

the hand-held transmitter within one inch of the uni-
versal transmitter and push the buttons on both
transmitters. The red light on the universal trans-
mitter will begin to flash slowly.

Fig. 9 Radio Frequency Detector

1 - SIGNAL DETECTION LED’S
2 - POWER LED
3 - ON/OFF SWITCH
4 - 9V BATTERY

8M - 14

MESSAGE SYSTEMS

LH

UNIVERSAL TRANSMITTER (Continued)