Dodge Durango (DN). Manual - part 320

Removal and Installation section of Group 8E -
Instrument

Panel

Systems

for

the

procedures.

Unplug the 14-way CTM wire harness connector.
Check for continuity between the driver door ajar
switch sense circuit cavity of the 14-way CTM wire
harness connector and a good ground. There should
be no continuity. If OK, go to Step 5. If not OK,
repair the short circuit as required.

(5) Check for continuity between the driver door

ajar switch sense circuit cavities of the 14-way CTM
wire harness connector and the driver door latch
wire harness connector. There should be continuity. If
OK, see Key-In Ignition Switch and/or Headlamp
Switch in the Diagnosis and Testing section of this
group. If not OK, repair the open circuit as required.

KEY-IN IGNITION SWITCH

For circuit descriptions and diagrams, refer to

8W-40 - Instrument Cluster or 8W-44 - Interior
Lighting in Group 8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Disconnect and isolate the battery negative

cable. Remove the steering column shrouds. Refer to
Group 8D - Ignition Systems for the procedures.
Unplug the key-in ignition switch wire harness con-
nector from the ignition switch.

(2) Check for continuity between the key-in igni-

tion switch sense and ground terminals of the key-in
ignition switch. There should be continuity with the
key in the ignition lock cylinder, and no continuity
with the key removed from the ignition lock cylinder.
If OK, go to Step 3. If not OK, replace the faulty igni-
tion switch assembly.

(3) Open the driver door. Check for continuity

between the ground circuit cavity of the key-in igni-
tion switch wire harness connector and a good
ground. There should be continuity. If OK, go to Step
4. If not OK, repair the open circuit to the driver
door ajar switch as required.

(4) Remove the Central Timer Module (CTM) from

its mounting bracket to access the CTM wire harness
connectors. Refer to Central Timer Module in the
Removal and Installation section of Group 8E -
Instrument

Panel

Systems

for

the

procedures.

Unplug the 14-way CTM wire harness connector.
Close the driver door. Check for continuity between
the key-in ignition switch sense circuit cavity of the

CTM wire harness connector and a good ground.
There should be no continuity. If OK, go to Step 5. If
not OK, repair the short circuit as required.

(5) Check for continuity between the key-in igni-

tion switch sense circuit cavities of the key-in igni-
tion switch wire harness connector and the 14-way
CTM wire harness connector. There should be conti-
nuity. If OK, test the CTM as described in this group.
If not OK, repair the open circuit as required.

HEADLAMP SWITCH

For circuit descriptions and diagrams, refer to

8W-45 - Central Timer Module in Group 8W - Wiring
Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Disconnect and isolate the battery negative

cable. Remove the headlamp switch from the instru-
ment panel. Refer to Headlamp Switch in the
Removal and Installation section of Group 8E -
Instrument

Panel

Systems

for

the

procedures.

Unplug the headlamp switch wire harness connec-
tors. Check for continuity between the driver door
ajar switch sense circuit cavity of the headlamp
switch wire harness connector and a good ground.
There should be continuity with the driver door open,
and no continuity with the driver door closed. If OK,
go to Step 2. If not OK, repair the circuit to the
driver door ajar switch as required.

(2) Remove the Central Timer Module (CTM) from

its mounting bracket to access the CTM wire harness
connectors. Refer to Central Timer Module in the
Removal and Installation section of Group 8E -
Instrument

Panel

Systems

for

the

procedures.

Unplug the 14-way CTM wire harness connector.
Remove the key from the ignition lock cylinder.
Check for continuity between the key-in ignition
switch sense circuit cavity of the 14-way CTM wire
harness connector and a good ground. There should
be no continuity. If OK, go to Step 3. If not OK,
repair the short circuit as required.

(3) Check for continuity between the key-in igni-

tion switch sense circuit cavities of the 14-way CTM
wire harness connector and the headlamp switch
wire harness connector. There should be continuity. If
OK, go to Step 4. If not OK, repair the open circuit
as required.

8U - 4

CHIME/BUZZER WARNING SYSTEMS

DIAGNOSIS AND TESTING (Continued)

(4) Check for continuity between the driver door

ajar switch sense circuit terminal and the key-in
ignition switch sense circuit terminal of the head-
lamp switch. There should be no continuity with the
switch in the Off position, and continuity with the
switch in the park or head lamps On position. If OK,
see Central Timer Module in the Diagnosis and Test-
ing section of this group. If not OK, replace the
faulty headlamp switch.

DRIVER SEAT BELT SWITCH

For circuit descriptions and diagrams, refer to

8W-40 - Instrument Cluster or 8W-44 - Interior
Lighting in Group 8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Disconnect and isolate the battery negative

cable. Unplug the wire harness connector from the
driver seat belt retractor. Check for continuity
between the circuit cavity in the body half of the
driver seat belt switch wire harness connector and a
good ground. There should be continuity. If OK, go to
Step 2. If not OK, repair the open circuit as required.

(2) Check for continuity between the two cavities

in the seat belt half of the driver seat belt switch
wire harness connector. There should be no continu-
ity with the seat belt webbing retracted, and continu-
ity with the seat belt webbing pulled out of the
retractor far enough to engage the seat belt buckle. If
OK, go to Step 3. If not OK, replace the faulty driver
side seat belt and retractor assembly.

(3) Remove the instrument cluster from the instru-

ment panel. Check for continuity between the seat
belt switch sense circuit cavities of the instrument
cluster wire harness connector (connector B) and the
body half of the driver seat belt switch wire harness
connector. There should be continuity. If OK, see
Instrument Cluster in the Diagnosis and Testing sec-
tion of this group for diagnosis of the chime request
circuit. If not OK, repair the open circuit as required.

INSTRUMENT CLUSTER

Before performing this test, see Driver Seat Belt

Switch in the Diagnosis and Testing section of this
group, and Instrument Cluster in the Diagnosis and
Testing section of Group 8E - Instrument Panel Sys-
tems. For circuit descriptions and diagrams, refer to

8W-40 - Instrument Cluster or 8W-45 - Central
Timer Module in Group 8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Disconnect and isolate the battery negative

cable. Remove the instrument cluster from the
instrument panel. Refer to Instrument Cluster in the
Removal and Installation section of Group 8E -
Instrument Panel Systems for the procedures.

(2) Remove the Central Timer Module (CTM) from

its mounting bracket to access the CTM wire harness
connectors. Refer to Central Timer Module in the
Removal and Installation section of Group 8E -
Instrument

Panel

Systems

for

the

procedures.

Unplug the 14-way CTM wire harness connector.

(3) Check for continuity between the chime request

circuit cavity of the 14-way CTM wire harness con-
nector and a good ground. There should be no conti-
nuity. If OK, go to Step 4. If not OK, repair the short
circuit as required.

(4) Check for continuity between the chime request

circuit cavities of the 14-way CTM wire harness con-
nector and the instrument cluster wire harness con-
nector (connector B). There should be continuity. If
OK, test the CTM as described in this group. If not
OK, repair the open circuit as required.

REMOVAL AND INSTALLATION

CHIME WARNING SYSTEM SWITCHES

Service procedures for the various hard-wired

switches used in the chime warning system can be
found in the Removal and Installation section of the
proper group, as follows:

• Driver door ajar switch - refer to Group 23 -

Body for the door latch service procedures

• Driver seat belt switch - refer to Group 23 -

Body for the seat belt retractor service procedures

• Headlamp switch - refer to Headlamp Switch in

the Removal and Installation section of Group 8E -
Instrument Panel Systems

• Key-in ignition switch - refer to Group 8D - Igni-

tion

Systems

for

the

ignition

switch

service

procedures.

CHIME/BUZZER WARNING SYSTEMS

8U - 5

DIAGNOSIS AND TESTING (Continued)

OVERHEAD CONSOLE SYSTEMS

TABLE OF CONTENTS

page

DESCRIPTION AND OPERATION

OVERHEAD CONSOLE SYSTEM . . . . . . . . . . . . . . 1
OVERHEAD CONSOLE . . . . . . . . . . . . . . . . . . . . . 1
COMPASS MINI-TRIP COMPUTER. . . . . . . . . . . . 2
OVERHEAD CONSOLE READING AND

COURTESY LAMP . . . . . . . . . . . . . . . . . . . . . . . 3

GARAGE DOOR OPENER STORAGE BIN . . . . . . . 3
PAPERCLIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SUNGLASSES STORAGE BIN. . . . . . . . . . . . . . . . 4
AMBIENT TEMPERATURE SENSOR . . . . . . . . . . . 4

DIAGNOSIS AND TESTING

COMPASS MINI-TRIP COMPUTER. . . . . . . . . . . . 5
AMBIENT TEMPERATURE SENSOR . . . . . . . . . . . 6

SERVICE PROCEDURES

COMPASS VARIATION ADJUSTMENT . . . . . . . . . 6
COMPASS CALIBRATION . . . . . . . . . . . . . . . . . . . 6

COMPASS DEMAGNETIZING . . . . . . . . . . . . . . . . 7

REMOVAL AND INSTALLATION

OVERHEAD CONSOLE READING AND

COURTESY LAMP LENS . . . . . . . . . . . . . . . . . . 8

OVERHEAD CONSOLE . . . . . . . . . . . . . . . . . . . . . 9
PAPERCLIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
COMPASS MINI-TRIP COMPUTER. . . . . . . . . . . 11
OVERHEAD CONSOLE READING AND

COURTESY LAMP HOUSING. . . . . . . . . . . . . . 11

SUNGLASSES STORAGE BIN. . . . . . . . . . . . . . . 12
GARAGE DOOR OPENER STORAGE BIN

DOOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

AMBIENT TEMPERATURE SENSOR . . . . . . . . . . 13

SPECIAL TOOLS

OVERHEAD CONSOLE SYSTEMS. . . . . . . . . . . . 14

DESCRIPTION AND OPERATION

OVERHEAD CONSOLE SYSTEM

DESCRIPTION

An overhead console unit is an available factory-in-

stalled option on this model. The overhead console
unit features a garage door opener storage bin, a
sunglasses storage bin, two reading and courtesy
lamps and either a standard paperclip or an optional
compass mini-trip computer. See the owner’s manual
in the vehicle glove box for more information on the
features, use and operation of all of the overhead
console components and systems. Refer to Overhead
Console in the Contents of Group 8W - Wiring Dia-
grams for complete circuit diagrams.

OVERHEAD CONSOLE

DESCRIPTION

The overhead console (Fig. 1) for this model

includes two front-mounted reading and courtesy
lamps, a garage door opener storage bin, a sun-
glasses storage bin and either a standard paperclip
or an optional compass mini-trip computer.

The overhead console is secured with two snap

clips at the rear and a single screw at the front to
the overhead console mounting bracket. The front of
the overhead console mounting bracket is secured to

the roof header near the windshield with two screws,
and the rear of the bracket is secured with double-

Fig. 1 Overhead Console

1 – SUNGLASSES STORAGE BIN
2 – GARAGE DOOR OPENER STORAGE BIN
3 – READING AND COURTESY LAMPS
4 – PAPERCLIP OR COMPASS MINI-TRIP COMPUTER

OVERHEAD CONSOLE SYSTEMS

8V - 1

faced tape to the inside surface of the roof panel. A
single electrical connection joins the overhead console
wire harness to the roof wire harness.

Following are general descriptions of the major

components used in the overhead console. See the
owner’s manual in the vehicle glove box for more
information on the use and operation of the various
overhead console features.

COMPASS MINI-TRIP COMPUTER

DESCRIPTION

The compass mini-trip computer is located in the

overhead console on models equipped with this
option. The compass mini-trip computer units include
the electronic control module, a Vacuum-Fluorescent
Display (VFD), a compass sensor unit and two push
button function switches.

The compass mini-trip computer module contains a

central processing unit and interfaces with other
electronic modules in the vehicle on the Chrysler Col-
lision Detection (CCD) data bus network. The CCD
data bus network allows the sharing of sensor infor-
mation. This helps to reduce wire harness complexity,
reduce internal controller hardware, and reduce com-
ponent sensor current loads. At the same time, this
system provides increased reliability, enhanced diag-
nostics, and allows the addition of many new feature
capabilities.

The compass mini-trip computer provides several

electronic functions and features. Some of the func-
tions and features that the compass mini-trip com-
puter module supports and/or controls, include the
following display options:

• Compass and temperature - provides the

outside temperature and one of eight compass read-
ings to indicate the direction the vehicle is facing.

• Trip odometer (TRIP ODO) - shows the dis-

tance travelled since the last trip computer reset.

• Average fuel economy (AVG ECO) - shows

the average fuel economy since the last trip computer
reset.

• Instant fuel economy (ECO) - shows the

present fuel economy based upon the current vehicle
distance and fuel used information.

• Distance to empty (DTE) - shows the esti-

mated distance 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.

• Elapsed time (ET) - shows the accumulated

ignition-on time since the last trip computer reset.

• Blank screen - the compass mini-trip VFD is

turned off.

The ambient temperature sensor is hard wired to

the compass mini-trip computer module. Data input

for all other compass mini-trip computer functions,
including VFD dimming level, is received through
CCD data bus messages. The compass mini-trip com-
puter uses its internal programming and all of these
inputs to calculate and display the requested data. If
the data displayed is incorrect, perform the self-diag-
nostic tests as described in this group. If these tests
prove inconclusive, the use of a DRB scan tool and
the proper Diagnostic Procedures manual are recom-
mended for further testing of the compass mini-trip
computer module and the CCD data bus.

The compass mini-trip computer module cannot be

repaired, and is available for service only as a unit.
This unit includes the push button switches and the
plastic module and display lens. If any of these com-
ponents is faulty or damaged, the complete compass
mini-trip computer module must be replaced.

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, 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
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.

THERMOMETER

The thermometer displays the outside ambient

temperature in whole degrees. The temperature dis-
play can be changed from Fahrenheit to Celsius
using the U.S./Metric push button. The displayed
temperature is not an instant reading of conditions,
but an average temperature. It may take the ther-
mometer 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 thermometer unit memory. When the ignition

8V - 2

OVERHEAD CONSOLE SYSTEMS

DESCRIPTION AND OPERATION (Continued)

Content .. 318 319 320 321 ..