Dodge 2000 DURANGO Service Manual page 310

8E - 2 INSTRUMENT PANEL SYSTEMS
DESCRIPTION AND OPERATION (Continued)
greatly reduces the number of components used over
conventional instrument panel construction.
Modular instrument panel construction allows all
of the gauges and controls to be serviced from the
front of the panel. In addition, most of the instru-
ment panel electrical components can be accessed
without complete instrument panel removal. If neces-
sary, the instrument panel can be removed from the
vehicle as an assembly.
Removal of the steering column opening cover pro-
vides access to the steering column mounts, the
steering column wiring, the gearshift interlock mech-
anism, the junction block, the relay and fuse block
and much of the instrument panel wiring. Removal of
the glove box provides access to the Central Timer
Module (CTM), the radio antenna coaxial cable, and
additional instrument panel wiring.
Removal of the instrument cluster bezel allows
access to the cluster assembly, the radio, the exterior
lighting system switches, and the heating and air
conditioning controls. Removal of the cluster assem-
bly allows access to the cluster illumination and indi-
cator lamp bulbs, and more of the instrument panel
wiring. The instrument panel lower bezel contains an
ash receiver, a rear window (rear wiper/washer and
rear window defogger) switch pod, and has provisions
for a cigar lighter and an accessory power outlet.
Removal of the complete instrument panel is
required for service of the passenger side airbag mod-
ule and most passenger compartment components of
the heating and air conditioning systems.
INSTRUMENT CLUSTER
DESCRIPTION
A single instrument cluster is offered on this
model. This cluster is an electromechanical unit that
utilizes integrated circuitry and information carried
on the Chrysler Collision Detection (CCD) data bus
network for control of all gauges and many of the
indicator lamps. This cluster also incorporates a dig-
ital Vacuum Fluorescent Display (VFD) for the odom-
eter/trip odometer display functions. Some variations
of this cluster exist due to optional equipment and
regulatory requirements.
This instrument cluster includes the following ana-
log gauges:
• Coolant temperature gauge
• Fuel gauge
• Oil pressure gauge
• Speedometer
• Tachometer
• Voltmeter.
This instrument cluster also includes provisions for
the following indicator lamps:
• Airbag indicator lamp
• Anti-lock Brake System (ABS) lamp
• Brake warning lamp
• Check gauges lamp
• Cruise-on indicator lamp (programmable)
• Door ajar lamp
• Four-wheel drive lock indicator lamp
• Headlamp high beam indicator lamp
• Liftgate ajar lamp
• Low fuel warning lamp
• Low washer fluid warning lamp
• Malfunction Indicator Lamp (MIL)
• Overdrive-off indicator lamp (automatic trans-
mission - programmable)
• Seat belt reminder lamp
• Security lamp
• Transmission oil temperature warning lamp
(automatic transmission - programmable)
• Turn signal indicator lamps
• Upshift indicator lamp (manual transmission -
programmable).
The instrument cluster includes a provision for
mounting an automatic transmission gear selector
indicator in the lower right corner of the cluster. A
mechanical gear selector indicator is used with all
automatic transmissions except the optional 45RFE
to indicate the gear selector position. If the vehicle is
equipped with the optional 45RFE automatic trans-
mission, the instrument cluster contains an integral
electronic gear selector indicator using a second dig-
ital Vacuum Fluorescent Display (VFD) to indicate
the gear selector position. The electronic gear selector
indicator is controlled by messages received by the
instrument cluster from the electronic Transmission
Control Module (TCM) over the CCD data bus net-
work. Models equipped with a manual transmission
have a block-out plate installed in place of the gear
selector indicator.
The instrument cluster circuitry has a self-diagnos-
tic actuator test capability, which will test each of the
CCD bus message-controlled functions of the cluster
by lighting the appropriate indicator lamps and posi-
tioning the gauge needles at several predetermined
locations on the gauge faces in a prescribed sequence.
For more information on this function, refer to
Instrument Cluster in the Diagnosis and Testing
section of this group.
The instrument cluster circuitry also sends chime
tone requests over a hard wired circuit to the Central
Timer Module (CTM) when it monitors certain condi-
tions or inputs. The CTM replaces the chime or
buzzer module. Refer to Chime Warning System in
the Description and Operation section of Group 8U -
Chime/Buzzer Warning Systems for more information
on this feature.
The instrument cluster for this model is serviced
only as a complete unit. If a cluster gauge or the
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