Page 1
DR MESSAGE SYSTEMS 8M - 1
MESSAGE SYSTEMS
TABLE OF CONTENTS
page page
OVERHEAD CONSOLE
DESCRIPTION ..........................1
OPERATION ............................2
DIAGNOSIS AND TESTING - OVERHEAD
CONSOLE ............................2
STANDARD PROCEDURE
STANDARD PROCEDURE - READING/
COURTESY LAMP REPLACEMENT .........3
STANDARD PROCEDURE - MODULE LENS
REPLACEMENT .......................3
STANDARD PROCEDURE - MODULE LAMP
REPLACEMENT .......................3
STANDARD PROCEDURE - COMPASS
CALIBRATION .........................3
STANDARD PROCEDURE - COMPASS
DEMAGNETIZING ......................4
STANDARD PROCEDURE - COMPASS
VARIATION ADJUSTMENT................4
REMOVAL
OVERHEAD CONSOLE REMOVAL .........5
INSTALLATION ..........................5
SPECIAL TOOLS
OVERHEAD CONSOLE ..................6
COMPASS/MINI-TRIP COMPUTER
DESCRIPTION ..........................6
OPERATION ............................7
DIAGNOSIS AND TESTING - COMPASS
MINI-TRIP COMPUTER ..................7
REMOVAL .............................7
INSTALLATION ..........................7
ELECTRONIC VEHICLE INFO CENTER
DESCRIPTION ..........................7
OPERATION ............................8
DIAGNOSIS AND TESTING - ELECTRONIC
VEHICLE INFORMATION CENTER .........8
STANDARD PROCEDURE - ELECTRONIC
VEHICLE INFORMATION CENTER
PROGRAMMING .......................8
REMOVAL .............................10
INSTALLATION .........................10
AMBIENT TEMP SENSOR
DESCRIPTION .........................10
OPERATION ...........................10
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - AMBIENT
TEMPERATURE SENSOR ...............11
DIAGNOSIS AND TESTING - AMBIENT
TEMPERATURE SENSOR CIRCUIT ........11
REMOVAL .............................11
INSTALLATION .........................11
UNIVERSAL TRANSMITTER
DESCRIPTION .........................11
OPERATION ...........................12
DIAGNOSIS AND TESTING - UNIVERSAL
TRANSMITTER .......................12
STANDARD PROCEDURE
STANDARD PROCEDURE - ERASING
TRANSMITTER CODES .................12
STANDARD PROCEDURE - SETTING
TRANSMITTER CODES .................12
REMOVAL .............................13
OVERHEAD CONSOLE
DESCRIPTION
Two different overhead consoles are available on
DR models. The Electronic Vehicle Information Center (EVIC) (Fig. 1) or Compass Mini-Trip Computer
(CMTC). All consoles are equipped with two reading/
courtesy lamps. The overhead console is mounted
with screws and two snap clips to a molded plastic
retainer bracket located above the headliner.
COMPASS DISPLAY
All the available overhead consoles on this model
include Compass information. While in the compass/
temperature mode, the compass 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-calibrating compass unit
requires no adjusting in normal use. The only calibration that may prove necessary is to drive the vehicle at 5 to 8 kilometers-per-hour (3 to 5 miles-perhour), on level ground in a square shaped pattern.
This will reorient the compass unit to its vehicle.
The compass unit also will compensate for magnetism the body of the vehicle may acquire during normal use. However, avoid placing anything magnetic
directly on the roof of the vehicle. Magnetic mounts
for an antenna, a repair order hat, or a funeral procession flag can exceed the compensating ability of
the compass unit if placed on the roof panel. Magnetic bit drivers used on the fasteners that hold the
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8M - 2 MESSAGE SYSTEMS DR
OVERHEAD CONSOLE (Continued)
ent temperature sensor, refer to Ambient Temperature Sensor later in this section.
Following are general descriptions of the major
components used in the overhead console. Refer to
Wiring Diagrams for complete circuit schematics.
OPERATION
Refer to the vehicle Owner’s Manual for specific
operation of each overhead console and its systems.
DIAGNOSIS AND TESTING - OVERHEAD
CONSOLE
If the problem with the overhead console is an
inaccurate or scrambled display, refer to SELF-DI-
AGNOSTIC TEST later in this text. If the problem
with the overhead console is incorrect Vacuum Fluorescent Display (VFD) dimming levels, use a DRB
IIIt scan tool and the proper Diagnostic Procedures
manual to test for the correct dimming message
inputs being received from the Body Control Module
(BCM) or Front Control Module (FCM) over the
Fig. 1 DR OVERHEAD CONSOLE – EVIC
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 section may be
required to restore proper compass operation.
TEMPERATURE DISPLAY
All the available overhead consoles on this model
include Temperature information. The temperature
displays the outside ambient temperature in whole
degrees. The temperature display can be toggled
from Fahrenheit to Celsius by selecting the desired
U.S./Metric option from the customer programmable
features. The displayed temperature is not an instant
reading of conditions, but an average temperature. It
may take the temperature 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 position, the last displayed temperature reading stays in
the electronic control modules, (CMTC, EVIC) memory. When the ignition switch is turned to the On
position again, the electronic module will display the
memory temperature for one minute; then update the
display to the current average temperature reading
within five minutes.
The temperature function is supported by an ambient temperature sensor. This sensor is mounted outside the passenger compartment near the front and
center of the vehicle, and is hard wired to the Front
Control Module (FCM). The FCM sends temperature
status messages to the module over the J1850 PCI
data bus circuit. For more information on the ambi-
J1850 Programmable Communications Interface
(PCI) data bus circuit. If the problem is a no-display
condition, use the following procedure. For complete
circuit diagrams, refer to Overhead Console in the
Wiring Diagrams section of the service manual.
(1) Remove the overhead console from the headliner (Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE - REMOVAL).
(2) Check for battery voltage at the overhead console electrical connector. Refer to Wiring for connector information. If OK, go to Step 3. If not OK, Check
for battery voltage at the appropriate B(+) fuse in the
integrated power module, repair the open fused B(+)
circuit as required.
(3) Turn the ignition switch to the On position.
Check the fused ignition switch output circuit(s) at
the overhead console electrical connector. If OK, go to
Step 4. If not OK, repair the open or shorted circuit
as required.
(4) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Check for continuity between the ground circuit cavity of the overhead console electrical connector and a
good ground. There should be continuity. If OK, refer
to SELF-DIAGNOSTIC TEST below for further
diagnosis of the electronics module and the J1850
PCI data bus circuit. If not OK, repair the open
ground circuit as required.
SELF-DIAGNOSTIC TEST
A self-diagnostic test is built-in to the module to
determine that the electronics module is operating
properly, and that all the J1850 PCI data bus messages are being received for proper operation. To perform the self-diagnostic test proceed as follows:
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DR MESSAGE SYSTEMS 8M - 3
OVERHEAD CONSOLE (Continued)
(1) With the ignition switch in the Off position,
simultaneously depress and hold the STEP and
RESET buttons.
(2) Turn the ignition switch to the On position.
(3) Following completion of the test, the electronics
module will display one of the following messages:
a. Pass Self Test (EVIC only), PASS (CMTC) -
The electronics module is working properly.
b. Failed Self Test (EVIC only), FAIL (CMTC) -
The electronics module has an internal failure. The
electronics module is faulty and must be replaced.
c. Failed J1850 Communication (EVIC only),
BUS (CMTC) - The electronics module is not receiving proper message input through the J1850 PCI
data bus circuit. 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 IIIt 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 magnetic field strength, based on geographic location.
Refer to Compass Variation Adjustment in the Standard Procedures section of this group.
STANDARD PROCEDURE - MODULE LENS
REPLACEMENT
(1) Remove the overhead console (Refer to 8 ELECTRICAL/OVERHEAD CONSOLE - REMOVAL).
(2) Remove the electronics module from the overhead console. Refer to the procedure later in this section.
(3) Unsnap the lens from the module and replace
lens as necessary.
STANDARD PROCEDURE - MODULE LAMP
REPLACEMENT
(1) Remove the overhead console (Refer to 8 ELECTRICAL/OVERHEAD CONSOLE - REMOVAL).
(2) Using a flat blade screwdriver twist out socket/
lamp (Fig. 2).
(3) Replace lamp(s) as necessary.
NOTE: If the compass reading displays dashes, 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 Standard Procedures section
of this group.
STANDARD PROCEDURE
STANDARD PROCEDURE - READING/
COURTESY LAMP REPLACEMENT
(1) Open hood, disconnect and isolate the negative
battery cable.
(2) Remove the reading/courtesy lamp lens. Using
a trim stick, gently pry the forward edge of the reading/courtesy lamp lens outward.
(3) Remove the reading/courtesy lamp socket from
the overhead console. Rotate the reading/courtesy
lamp socket one quarter turn counter clockwise.
(4) Remove the lamp and socket assembly.
(5) Reverse the above procedure to install.
Fig. 2 Top of Overhead Console
1 - OVERHEAD CONSOLE HOUSING
2 - EVIC/CMTC MODULE
3 - ILLUMINATION LAMPS
4 - MODULE RETAINING SCREWS
STANDARD PROCEDURE - COMPASS
CALIBRATION
CAUTION: Do not place any external magnets, such
as magnetic roof mount antennas, in the vicinity of
the compass. Do not use magnetic tools when servicing the overhead console.
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8M - 4 MESSAGE SYSTEMS DR
OVERHEAD CONSOLE (Continued)
The electronic compass unit features a self-calibrating design, which simplifies the calibration procedure. This feature automatically updates the
compass calibration while the vehicle is being driven.
This allows the compass unit to compensate for small
changes in the residual magnetism that the vehicle
may acquire during normal use. If the compass readings appear to be erratic or out of calibration, perform the following calibration procedure. Also, new
service replacement Electronic Modules (EVIC,
CMTC) must have their compass calibrated using
this procedure. Do not attempt to calibrate the compass near large metal objects such as other vehicles,
large buildings, or bridges; or, near overhead or
underground power lines.
NOTE: Whenever the compass is calibrated manually, the variance number must also be reset. Refer
to Compass Variation Adjustment in this group.
To calibrate the compass manually proceed as follows:
(1) Turn the ignition switch to the On position. If
the compass/temperature data is not currently being
displayed, momentarily depress and release the C/T
push button to reach the compass/temperature display.
(2) Depress the RESET push button and hold the
button down until “CAL” appears in the display. This
takes about ten seconds, and appears about five seconds after “VAR = XX” is displayed.
(3) Release the RESET push button.
(4) Drive the vehicle on a level surface, away from
large metal objects and power lines, through three or
more complete turns at between five and eight kilometers-per-hour (three and five miles-per-hour) in
not less than 48 seconds. The “CAL” message will
disappear from the display to indicate that the compass is now calibrated.
NOTE: If the “CAL” message remains in the display,
either there is excessive magnetism near the compass, or the unit is faulty. Repeat the calibration
procedure one more time.
NOTE: If the wrong direction is still indicated in the
compass display, the area selected for calibration
may be too close to a strong magnetic field. Repeat
the calibration procedure in another location.
overhead console. Equivalent units must be rated as
continuous duty for 110/115 volts and 60 Hz. They
must also have a field strength of over 350 gauss at 7
millimeters (0.25 inch) beyond the tip of the probe.
To demagnetize the roof panel and the overhead
console forward mounting screw, proceed as follows:
(1) Be certain that the ignition switch is in the Off
position, before you begin the demagnetizing procedure.
(2) Connect the degaussing tool to an electrical
outlet, while keeping the tool at least 61 centimeters
(2 feet) away from the compass unit.
(3) Slowly approach the head of the overhead console mounting screw with the degaussing tool connected.
(4) Contact the head of the screw with the plastic
coated tip of the degaussing tool for about two seconds.
(5) With the degaussing tool still energized, slowly
back it away from the screw. When the tip of the tool
is at least 61 centimeters (2 feet) from the screw
head, disconnect the tool.
(6) Place a piece of paper approximately 22 by 28
centimeters (8.5 by 11 inches), oriented on the vehicle
lengthwise from front to rear, on the center line of
the roof at the windshield header (Fig. 3). The purpose of the paper is to protect the roof panel from
scratches, and to define the area to be demagnetized.
(7) Connect the degaussing tool to an electrical
outlet, while keeping the tool at least 61 centimeters
(2 feet) away from the compass unit.
(8) Slowly approach the center line of the roof
panel at the windshield header, with the degaussing
tool connected.
(9) Contact the roof panel with the plastic coated
tip of the degaussing tool. Be sure that the template
is in place to avoid scratching the roof panel. Using a
slow, back-and-forth sweeping motion, and allowing
13 millimeters (0.50 inch) between passes, move the
tool at least 11 centimeters (4 inches) to each side of
the roof center line, and 28 centimeters (11 inches)
back from the windshield header.
(10) With the degaussing tool still energized,
slowly back it away from the roof panel. When the
tip of the tool is at least 61 centimeters (2 feet) from
the roof panel, disconnect the tool.
(11) Calibrate the compass and adjust the compass
variance (Refer to 8 - ELECTRICAL/OVERHEAD
CONSOLE - STANDARD PROCEDURE).
STANDARD PROCEDURE - COMPASS
DEMAGNETIZING
A degaussing tool (Special Tool 6029) is used to
demagnetize, or degauss, the overhead console forward mounting screw and the roof panel above the
STANDARD PROCEDURE - COMPASS
VARIATION ADJUSTMENT
Compass variance, also known as magnetic declination, is the difference in angle between magnetic
north and true geographic north. In some geographic
locations, the difference between magnetic and geo-
Page 5
DR MESSAGE SYSTEMS 8M - 5
OVERHEAD CONSOLE (Continued)
(4) Release the RESET push button. “VAR =XX ”
will remain in the display. “XX” equals the current
variance zone setting.
(5) Depress and release the STEP push button to
step through the zone numbers, until the zone number for your geographic location appears in the display.
(6) Depress and release the RESET push button
to enter the displayed zone number into the EVIC/
CMTC module memory.
(7) Confirm that the correct directions are now
indicated by the compass.
REMOVAL
OVERHEAD CONSOLE REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the overhead console retaining screws,
located in the sunglass storage bin.
(3) Using your fingertips, grasp the sides of the
overhead console and pull straight down evenly to
disengage the two snap clips at the front of the unit.
(4) Lower the overhead console far enough to
access the wire harness connectors.
(5) Disconnect the EVIC, CMTC electronic module
and the reading/courtesy lamps electrical connectors.
(6) Remove the overhead console from the vehicle.
Fig. 3 Roof Demagnetizing Pattern
graphic north is great enough to cause the compass
to give false readings. If this problem occurs, the
compass variance setting may need to be changed.
To set the compass variance:
(1) Using the Variance Settings map, find your
geographic location and note the zone number (Fig.
4).
(2) Turn the ignition switch to the On position. If
the compass/temperature data is not currently being
displayed, momentarily depress and release the C/T
push button to reach the compass/temperature display.
(3) Depress the RESET push button and hold the
button down until “VAR = XX” appears in the display.
This takes about five seconds.
INSTALLATION
(1) Position the overhead console in the vehicle.
(2) Connect the EVIC, CMTC electronic module
and the reading/courtesy lamps electrical connectors.
(3) Grasp the sides of the overhead console and
push straight up evenly to engage the two snap clips
at the rear of the unit.
(4) Install the overhead console retaining screw,
located in the front of console. Torque the screw to
1.2 N·m (10 in. lbs.).
(5) Connect the negative battery cable.
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8M - 6 MESSAGE SYSTEMS DR
OVERHEAD CONSOLE (Continued)
Fig. 4 Variance Settings
SPECIAL TOOLS
OVERHEAD CONSOLE
DEGAUSSING TOOL #6029
COMPASS/MINI-TRIP
COMPUTER
DESCRIPTION
The Compass Mini-Trip Computer (CMTC) is a
module located in the overhead console. The CMTC is
equipped with a mini-trip feature. The CMTC consists of a electronic control module with a vacuum
fluorescent display (VFD) and function switches. The
CMTC consists of a electronic module that displays
compass, trip computer, and temperature features.
Actuating the STEP push button will cause the
CMTC to change mode of operation when the ignition
is ON. Example:
• Average miles per gallon (ECO)
• Distance to empty (DTE)
• Trip odometer (ODO)
RADIO FREQUENCY DETECTOR #9001
• Elapsed time (ET)
• Off
Actuating the C/T push button will cause the
CMTC to change to Compass/Temperature display.
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DR MESSAGE SYSTEMS 8M - 7
COMPASS/MINI-TRIP COMPUTER (Continued)
OPERATION
The Compass Mini-Trip Computer module in the
overhead console has buttons used to select various
functions. The CMTC selector buttons will not operate until the ignition is in the RUN position.
When the ignition switch is first turned to the
RUN position the CMTC display;
• Returns to the last mode setting selected before
the ignition was last switched OFF.
DIAGNOSIS AND TESTING - COMPASS
MINI-TRIP COMPUTER
Compass Mini-Trip Computer (CMTC) data is
obtained from other electronic modules (CCN, FCM
and JTEC) on the J1850 Data Bus circuit. The
CMTC will display dashes (- -) for any of the screens
it did not receive the bus messages. The label corresponding to the missing information will be lit. If no
compass mini-trip computer data is displayed, check
the J1850 Data Bus circuit communications and the
other modules.
Refer to Overhead Console Diagnosis and Testing
for instructions on performing a CMTC module SelfDiagnostic Test. The DRB IIIt is recommended for
checking the J1850 Data Bus circuit and the other
modules. Perform the CMTC self diagnosis before
replacing the CMTC module.
Fig. 5 OVERHEAD CONSOLE MODULE REMOVAL
1 - COMPASS MINI-TRIP COMPUTER MODULE
2 - OVERHEAD CONSOLE
pass Calibration in the Standard Procedures section of this group for the procedures.
REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the overhead console from the headliner.(Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE - REMOVAL).
(3) Remove the screws holding Compass Mini-Trip
Computer module in the overhead console (Fig. 5).
(4) Disconnect the CMTC module electrical connector. Depress the retaining tab and pull straight
apart.
(5) Remove CMTC module from console assembly.
INSTALLATION
(1) Position the compass mini-trip computer module in the overhead console.
(2) Install the screws holding the compass minitrip computer module in the overhead console.
(3) Connect the module electrical connector.
(4) Install the overhead console on the headliner(Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE - INSTALLATION).
(5) Connect the negative battery cable.
(6) Check CMTC module function.
NOTE: If a new module has been installed, the compass will have to be calibrated and the variance set.
Refer to Compass Variation Adjustment and Com-
ELECTRONIC VEHICLE INFO
CENTER
DESCRIPTION
The Electronic Vehicle Information Center (EVIC)
is a module located in the overhead console on some
models. The EVIC module features a large Vacuum
Fluorescent Display (VFD) screen for displaying
information, and back-lit push button 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) J1850 data bus circuit. The PCI data
bus circuit 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 capabilities.
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.
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8M - 8 MESSAGE SYSTEMS DR
ELECTRONIC VEHICLE INFO CENTER (Continued)
Refer to ELECTRONIC VEHICLE INFORMATION CENTER PROGRAMMING in the Standard
Procedures section of this group for more information
on the customer programmable feature options.
If the vehicle is equipped with the optional universal transmitter transceiver, the EVIC will also display messages and an icon indicating when the
universal transmitter transceiver is being trained,
which of the three transmitter buttons is transmitting, and when the transceiver is cleared.
Data input for all EVIC functions, including VFD
dimming level, is received through the J1850 PCI
data bus circuit. The EVIC module uses its internal
programming and all of its data inputs to calculate
and display the requested data. If the data displayed
is incorrect, perform the self-diagnostic tests as
described in this group. If these tests prove inconclusive, the use of a DRB IIIt scan tool and the proper
Diagnostic Procedures manual are recommended for
further testing of the EVIC module and the J1850
PCI data bus circuit.
The EVIC module cannot be repaired, and is available for service only as a unit. If any part is faulty or
damaged, the complete EVIC module must be
replaced.
OPERATION
The Electronic Vehicle Information Center is wired
to both constant 12v 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 module display will return to the last function
being displayed before the ignition 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/temperature display mode from any other mode. While in the
compass/temperature 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 CENTER PROGRAMMING in the Standard Procedures
section of this group for more information on setting
the Service Interval.
For more information on the features, control functions and setting procedures for the EVIC module,
see the owner’s manual in the vehicle glove box.
DIAGNOSIS AND TESTING - ELECTRONIC
VEHICLE INFORMATION CENTER
Electronic Vehicle Information Center (EVIC) data
is obtained from other electronic modules (CCN,
FCM, JTEC) on the J1850 Data Bus circuit. The
EVIC will display dashes (- -) for any of the screens
it did not receive the bus messages. The label corresponding to the missing information will be lit. If no
EVIC data is displayed, check the J1850 Data Bus
circuit communications and the other modules. If the
brightness level is improper check the J1850 Data
Bus circuit.
Refer to Overhead Console Diagnosis and Testing
for instructions on performing a EVIC module SelfDiagnostic Test. The DRB IIIt is recommended for
checking the J1850 Data Bus circuit and other modules. Perform the EVIC self diagnosis before replacing the EVIC module.
STANDARD PROCEDURE - ELECTRONIC
VEHICLE INFORMATION CENTER
PROGRAMMING
EVIC PROGRAMMING MODE
Some vehicles are equipped with a Electronic Vehicle Information Center (EVIC) equipped overhead
console. The Electronic Vehicle Information Center
(EVIC) provides the vehicle operator with a user
interface, which allows the selection of several
optional customer programmable electronic features
to suit individual preferences. The EVIC must be
placed into its programming mode in order to view or
change the programmable features. To enter the
EVIC programming mode and to view or change the
selected programmable features options, proceed as
follows:
(1) Turn the ignition switch to the On position.
Page 9
DR MESSAGE SYSTEMS 8M - 9
ELECTRONIC VEHICLE INFO CENTER (Continued)
(2) Momentarily depress and release the Menu
push button to step through the programmable features list. Each programmable feature and its currently selected option will appear on the EVIC
display in the sequence shown in the Programmable
Features list that follows.
(3) Momentarily depress and release the Step push
button to step through the available options for the
programmable feature being displayed.
(4) The option that last appears in the display
with a programmable feature before exiting the programming mode, becomes the newly selected programmable feature option.
(5) The EVIC exits the programming mode and
returns to its normal operating mode when the C/T
push button is depressed or when the end of the programmable features menu list is reached, whichever
occurs first.
PROGRAMMABLE FEATURES
• LANGUAGE? - The options include English,
Francaise, Deutsch, Italiana, or Espanol. The default
is English. All EVIC display nomenclature, including
the trip computer functions, warning messages and
the programmable features appear in the selected
language.
• DISPLAY U.S. OR METRIC? - The options
include U.S. and M. The default is U.S. This feature
toggles the trip computer temperature, fuel economy
and odometer display readings between U.S. and
metric units of measure.
• SERVICE INTV. = - The options include from
3200 to 12000 kilometers in 800 kilometer increments (2000 to 6000 miles in 500 mile increments).
The default is 12000 kilometers (6000 miles). The
selected distance becomes the interval at which the
Perform Service warning message will be displayed
by the EVIC. If a new distance is selected, a second
programmable feature appears, RESET SERVICE
DISTANCE? - The options include No and Yes. The
default is Yes. When Yes is selected, the accumulated
distance since the last previous Perform Service
warning message will be reset to zero because the
service interval has been changed. When No is
selected, the distance until the next Perform Service
warning message is reduced by the accumulated distance since the last previous message.
• AUTO DOOR LOCKS? - The options include
Yes and No. The default is Yes. When Yes is selected,
all doors lock automatically when vehicle speed
reaches 25 kilometers-per-hour (15 miles-per-hour). If
YES is selected, a second programmable feature
appears, AUTO UNLOCK ON EXIT? - The options
again include Yes and No. The default is No. When
Yes is selected, following each Auto Door Lock event
all doors will automatically unlock when the driver
door is opened, if the vehicle is stopped and the
transmission gear selector is in Park or Neutral. The
Auto Door Unlock event will only occur once following each Auto Door Lock event.
• REMOTE UNLOCK - The options include
Driver Door 1st and All Doors. The default is Driver
Door 1st. When Diver Door 1st is selected, only the
driver door unlocks when the Unlock button of the
Remote Keyless Entry (RKE) transmitter is
depressed once. The Unlock button of the RKE transmitter must be depressed twice to unlock all doors.
When All Doors is selected, all doors unlock when the
Unlock button of the RKE transmitter is depressed
once.
• SOUND HORN ON LOCK? - The options
include On and Off. The default is No. When Yes is
selected, a short horn chirp will provide an audible
confirmation when the RKE receiver recognizes a
valid Lock signal from an RKE transmitter. When No
is selected, no horn chirp will occur with the RKE
Lock event. This feature may be selected independent of the FLASH LIGHTS WITH LOCKS? programmable feature.
• FLASH LIGHTS WITH LOCKS? - The options
include Yes and No. The default is Yes. When Yes is
selected, a single flash of the hazard warning lamps
will provide an optical confirmation when the RKE
receiver recognizes a valid Lock signal from an RKE
transmitter, and two flashes of the same lamps will
occur when the RKE receiver recognizes a valid
Unlock signal from an RKE transmitter. When No is
selected, no lamp flash will occur with the RKE Lock
or Unlock event. This feature may be selected independent of the SOUND HORN ON LOCK? programmable feature.
• HEADLAMP DELAY = - The options include
Off, 30 Sec, 60 Sec, and 90 Sec. The default is 90 Sec.
When a time interval is selected, the headlamps will
remain on for that length of time when the headlamps are turned off after the ignition is turned off,
or if the Auto mode is selected on vehicles with the
Auto Headlamps option. When Off is selected, the
headlamp delay feature is disabled.
• TRAIN REMOTE - When this feature is
selected the driver can choose to train up to four
remote keyless entry transmitters. The options
include Yes and No. The default is No. When Yes is
selected and the MENU button is pressed the EVIC
will display “PRESS REMOTE LOCK & UNLOCK
THEN PRESS UNLOCK”, followed by a chime to
indicate the training sequence can commence. You
have approximately 30 seconds to train up to four
transmitters, after each transmitter is trained a
chime will sound indicating that the training was
successful. If remote link to memory is “YES” , the
first transmitter trained will be associated with
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8M - 10 MESSAGE SYSTEMS DR
ELECTRONIC VEHICLE INFO CENTER (Continued)
memory setting 1 and the second transmitter trained
will be associated with memory setting 2. Additional
transmitters will not be associated with a memory
setting. When you have finished training the transmitters, press the menu button again and the EVIC
will display “TRAIN DONE “X” TRAINED. If no
transmitters are trained within approximately 30
seconds the EVIC will display “TRAIN TIMEOUT”.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the overhead console from the headliner.(Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE - REMOVAL).
(4) Install the overhead console on the headliner(Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE - INSTALLATION).
(5) Connect the battery negative cable.
(6) Check EVIC module function.
NOTE: If a new EVIC module has been installed, the
compass will have to be calibrated and the variance
set. Refer to Compass Variation Adjustment and
Compass Calibration in the Standard Procedures
section of this group for the procedures.
AMBIENT TEMP SENSOR
DESCRIPTION
Ambient air temperature is monitored by the overhead console. The ambient temperature messages are
received from the Front Control Module (FCM) over
the Programmable Communications Interface (PCI)
J1850 data bus circuit. The FCM receives a hard
wired input from the ambient temperature sensor
(Fig. 7). The ambient temperature sensor is a variable resistor mounted to the underside of the hood,
in the engine compartment.
Fig. 6 OVERHEAD CONSOLE MODULE REMOVAL
1 - ELECTRONIC VEHICLE INFORMATION MODULE
2 - OVERHEAD CONSOLE
(3) Disconnect the EVIC module electrical connector. Depress the retaining tab and pull straight
apart.
(4) Remove the screws holding the EVIC module in
the overhead console (Fig. 6).
(5) Remove EVIC module from console assembly.
INSTALLATION
(1) Position the EVIC module in the overhead console.
(2) Install the screws holding the EVIC module in
the overhead console.
(3) Connect the EVIC module electrical connector.
Fig. 7 Ambient Temperature Sensor - Typical
For more information on the front control module,
refer to Front Control Module in the Electronic
Control Modules section of this manual. For complete
circuit diagrams, refer to Wiring. The ambient temperature sensor cannot be adjusted or repaired and,
if faulty or damaged, it must be replaced.
OPERATION
The ambient temperature sensor is a variable
resistor that operates on a five-volt reference signal
sent to it by the Front Control Module. The resistance in the sensor changes as temperature changes,
changing the temperature sensor signal circuit voltage to the Front Control Module. Based upon the
resistance in the sensor, the Front Control Module
senses a specific voltage on the temperature sensor
signal circuit, which it is programmed to correspond
to a specific temperature. The Front Control Module
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DR MESSAGE SYSTEMS 8M - 11
AMBIENT TEMP SENSOR (Continued)
then sends the proper ambient temperature messages to the EVIC, CMTC over the PCI J1850 data
bus.
The temperature function is supported by the
ambient temperature sensor, a wiring circuit, the
Front Control Module, the Programmable Communications Interface (PCI) data bus, and a portion of the
Electronics module. If any portion of the ambient
temperature sensor circuit fails, the Front Control
Module will self-diagnose the circuit.
For complete circuit diagrams, refer to Wiring.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - AMBIENT
TEMPERATURE SENSOR
(1) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Disconnect the ambient temperature sensor wire harness connector.
(2) Measure the resistance of the ambient temperature sensor. At 24° C (75° F), the sensor resistance
should be approximately 10.3 kilohms. At 30° C (86°
F), the sensor resistance should be approximately
7.57 kilohms. The sensor resistance should decrease
as the temperature rises. If OK, refer to Diagnosis
and Testing - Ambient Temperature Sensor Circuit in this group. If not OK, replace the faulty
ambient temperature sensor.
(4) Remove the jumper wire from the ambient temperature sensor wire harness connector. Check for
continuity between the sensor return circuit cavity of
the Front Control Module wire harness connector
and a good ground. There should be no continuity. If
OK, go to Step 5. If not OK, repair the shorted sensor return circuit as required.
(5) Check for continuity between the ambient temperature sensor signal circuit cavity of the Front
Control Module wire harness connector and a good
ground. There should be no continuity. If OK, refer to
Diagnosis and Testing - Overhead Console in
this group. If not OK, repair the shorted ambient
temperature sensor signal circuit as required.
REMOVAL
(1) Open the hood.
(2) Disconnect and isolate the battery negative
cable.
(3) Working on the underside of the hood, remove
screw holding sensor to hood panel.
(4) Disconnect the sensor electrical connector and
remove sensor from vehicle.
INSTALLATION
(1) Connect the sensor electrical connector.
(2) Working on the underside of the hood, install
screw holding sensor to hood panel.
(3) Connect the battery negative cable.
(4) Close the hood.
NOTE: The ambient temperature sensor is a very
sensitive device. When testing, be certain the temperature sensor has had time to stabilize (room
temperature) before attempting to read the sensor
resistance. Failure to let the ambient temperature
sensor temperature stabilize could result in a misleading test.
DIAGNOSIS AND TESTING - AMBIENT
TEMPERATURE SENSOR CIRCUIT
(1) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Disconnect the ambient temperature sensor wire harness connector and the Front Control Module wire
harness connector.
(2) Connect a jumper wire between the two terminals of the ambient temperature sensor wire harness
connector.
(3) Check for continuity between the sensor return
circuit and the ambient temperature sensor signal
circuit cavities of the Front Control Module wire harness connector. There should be continuity. If OK, go
to Step 4. If not OK, repair the open sensor return or
signal circuit as required.
UNIVERSAL TRANSMITTER
DESCRIPTION
Some DR models are equipped with a universal
transmitter transceiver. The universal transmitter is
integral to the Electronic Vehicle Information Center
(EVIC) and the Compass Mini-Trip Computer
(CMTC), which is located in the overhead console.
The only visible component of the universal transmitter are the three transmitter push buttons centered
between the modules push buttons located just rearward of the display screen in the overhead console.
The three universal transmitter push buttons are
identified with one, two or three light indicators so
that they be easily identified.
Each of the three universal transmitter push buttons control an independent radio transmitter channel. 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 systems or just about any other device that can be
equipped with a radio receiver in the 286 to 399
MegaHertz (MHz) frequency range for remote opera-
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8M - 12 MESSAGE SYSTEMS DR
UNIVERSAL TRANSMITTER (Continued)
tion. The universal transmitter is capable of operating systems using either rolling code or non-rolling
code technology.
The electronics module displays messages and a
small house-shaped icon with one, two or three dots
corresponding to the three transmitter buttons to
indicate the status of the universal transmitter. The
EVIC messages are:
• Clearing Channels - Indicates that all of the
transmitter codes stored in the universal transmitter
have been successfully cleared.
• Channel “X” Training - Indicates that the uni-
versal transmitter is in its transmitter learning
mode.
• Channel “X” Trained - Indicates that the uni-
versal transmitter has successfully acquired a new
transmitter code.
• Channel “X” Transmitting - 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
or CMTC modules. If any part of the universal transmitter is faulty or damaged, the complete EVIC or
CMTC module must be replaced.
(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.
OPERATION
The universal transmitter operates on a nonswitched source of battery current so the unit will
remain functional, regardless of the ignition switch
position. For more information on the features, programming 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 operating normally, see the owner’s manual in the vehicle
glove box for instructions on training the Transmitter. 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. If both the
Transmitter and the EVIC module are inoperative,
refer to Electronic Vehicle Information Center
Diagnosis and Testing in this group for further
diagnosis. For complete circuit diagrams, refer to
Wiring Diagrams. (Fig. 8) 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.
Fig. 8 RADIO FREQUENCY DETECTOR
1 - SIGNAL DETECTION LED’S
2 - POWER LED
3 - ON/OFF SWITCH
4 - 9V BATTERY
STANDARD PROCEDURE
STANDARD PROCEDURE - ERASING
TRANSMITTER CODES
To erase the universal transmitter codes, simply
hold down the two outside buttons until the display
confirms the operation.
NOTE: Individual channels cannot be erased. Erasing the transmitter codes will erase ALL programmed codes.
STANDARD PROCEDURE - SETTING
TRANSMITTER CODES
(1) Turn off the engine.
(2) Erase the codes by pressing the two outside
buttons. Release the buttons when the display confirms the operation (about 20 seconds).
(3) Choose one of the three buttons to train. Place
the hand-held transmitter within one inch of the uni-
Page 13
DR MESSAGE SYSTEMS 8M - 13
UNIVERSAL TRANSMITTER (Continued)
versal transmitter and push the buttons on both
transmitters.
(4) Release both buttons. Your universal transmitter is now “trained”. To train the other buttons,
repeat Step 3 and Step 4. Be sure to keep your handheld transmitter in case you need to retrain the universal transmitter.
REMOVAL
(1) For universal transmitter removal and installation procedure, (Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE/COMPASS/MINI-TRIP
COMPUTER - REMOVAL and INSTALLATION).
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