Dodge Dakota (R1). Manual - part 321

(Connector C2) for the instrument cluster. Check for
continuity to a good ground. There should be no con-
tinuity. If OK, go to Step 4. If not OK, repair the
shorted fused panel lamps dimmer switch signal cir-
cuit between the instrument cluster and the JB as
required.

(4) Reinstall the instrument panel dimmer fuse

(Fuse 9 - 5 ampere) in the JB. Reconnect the battery
negative cable. Turn the exterior lamps On with the
headlamp switch. Rotate the headlamp switch panel
lamps dimmer thumbwheel upward to just before the
interior lamps detent. Check for battery voltage at
the fused panel lamps dimmer switch signal circuit
cavity of the instrument panel wire harness connec-
tor (Connector C2) for the instrument cluster. If OK,
replace the faulty bulb and bulb holder units. If not
OK, repair the open fused panel lamps dimmer
switch signal circuit between the instrument cluster
and the JB as required.

REMOVAL

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. 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.

(2) Remove the cluster bezel from the instrument

panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
CLUSTER BEZEL - REMOVAL).

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

ment cluster to the instrument panel (Fig. 2).

(4) Pull

the

instrument

cluster

rearward

far

enough to disengage the two self-docking instrument
panel wire harness connectors from the cluster con-
nector receptacles.

(5) Roll the bottom of the instrument cluster

upward and rearward to remove it from the instru-
ment panel.

DISASSEMBLY

Some of the components for the instrument cluster

used in this vehicle are serviced individually. The
serviced

components

include:

the

incandescent

instrument cluster indicator lamp and illumination

lamp bulbs (including the integral bulb holders), the
cluster lens and hood unit, and the cluster housing
rear cover. The remaining components are serviced
only as a part of the cluster housing unit, which
includes: the cluster housing, the electronic circuit
board unit, the cluster overlay, the gauges, and the
odometer/trip odometer reset switch button. Follow-
ing are the procedures for disassembling the serviced
components from the instrument cluster unit.

CLUSTER BULB

This procedure applies to each of the incandescent

cluster illumination lamp or indicator lamp bulb and
bulb holder units. However, the illumination lamps
and the indicator lamps use different bulb and bulb
holder unit sizes. They must never be interchanged.

(1) Disconnect and isolate the battery negative

cable.

Fig. 2 Instrument Cluster Remove/Install

1 - INSTRUMENT PANEL
2 - INSTRUMENT CLUSTER
3 - SCREW (4)
4 - SELF-DOCKING CONNECTOR (2)

8J - 10

INSTRUMENT CLUSTER

INSTRUMENT CLUSTER (Continued)

(2) Remove the instrument cluster from the instru-

ment panel. (Refer to 8 - ELECTRICAL/INSTRU-
MENT CLUSTER - REMOVAL).

(3) Turn the bulb holder counterclockwise about

sixty degrees on the cluster electronic circuit board
(Fig. 3).

(4) Pull the bulb and bulb holder unit straight

back to remove it from the bulb mounting hole in the
cluster electronic circuit board.

CLUSTER LENS AND HOOD

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the instrument cluster from the instru-

ment panel. (Refer to 8 - ELECTRICAL/INSTRU-
MENT CLUSTER - REMOVAL).

(3) Remove the seven screws that secure the lens

and hood unit to the cluster housing (Fig. 4).

(4) Gently pull the lens and hood unit away from

the cluster housing.

CAUTION: Do not touch the face of the gauge over-
lay or the back of the cluster lens with your finger.
It will leave a permanent finger print.

CLUSTER HOUSING REAR COVER

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the instrument cluster from the instru-

ment panel. (Refer to 8 - ELECTRICAL/INSTRU-
MENT CLUSTER - REMOVAL).

(3) Remove the six screws that secure the rear

cover to the back of the cluster housing (Fig. 5).

(4) Remove the rear cover from the back of the

cluster housing.

CLUSTER HOUSING

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the instrument cluster from the instru-

ment panel. (Refer to 8 - ELECTRICAL/INSTRU-
MENT CLUSTER - REMOVAL).

(3) Remove the lens and hood unit from the cluster

housing. Refer to CLUSTER LENS AND HOOD.

(4) Remove the rear cover from the cluster hous-

ing. Refer to CLUSTER HOUSING REAR COVER.

Fig. 3 Cluster Bulb Remove/Install

1 - INSTRUMENT CLUSTER
2 - BULB AND HOLDER

Fig. 4 Instrument Cluster Components

1 - COVER
2 - HOUSING
3 - OVERLAY AND GAUGES
4 - HOOD
5 - LENS
6 - CIRCUIT BOARD
7 - ODOMETER SWITCH BUTTON

Fig. 5 Cluster Housing Rear Cover Remove/Install

1 - REAR CLUSTER HOUSING COVER

INSTRUMENT CLUSTER

8J - 11

INSTRUMENT CLUSTER (Continued)

ASSEMBLY

CLUSTER BULB

This procedure applies to each of the incandescent

CAUTION: Be certain that any bulb and bulb holder
unit removed from the cluster electronic circuit
board is reinstalled in the correct position. Always
use the correct bulb size and type for replacement.
An incorrect bulb size or type may overheat and
cause damage to the instrument cluster, the elec-
tronic circuit board and/or the gauges.

(1) Insert the bulb and bulb holder unit straight

into the correct bulb mounting hole in the cluster
electronic circuit board (Fig. 3).

(2) With the bulb holder fully seated against the

cluster electronic circuit board, turn the bulb holder
clockwise about sixty degrees to lock it into place.

(3) Reinstall

the

instrument

cluster

onto

the

instrument panel. (Refer to 8 - ELECTRICAL/IN-
STRUMENT CLUSTER - INSTALLATION).

(4) Reconnect the battery negative cable.

CLUSTER LENS AND HOOD

CAUTION: Do not touch the face of the gauge over-
lay or the back of the cluster lens with your finger.
It will leave a permanent finger print.

(1) Align the cluster lens and hood unit with the

cluster housing. Be certain that the odometer/trip
odometer switch button is installed through the
clearance hole in the lens (Fig. 4).

(2) Install and tighten the seven screws that

secure the lens and hood unit to the cluster housing.
Tighten the screws to 2.2 N·m (20 in. lbs.).

(3) Reinstall

the

instrument

cluster

onto

the

instrument panel. (Refer to 8 - ELECTRICAL/IN-
STRUMENT CLUSTER - INSTALLATION).

(4) Reconnect the battery negative cable.

CLUSTER HOUSING REAR COVER

(1) Position the rear cover onto the back of the

cluster housing (Fig. 5).

(2) Install and tighten the six screws that secure

the rear cover to the back of the cluster housing.
Tighten the screws to 2.2 N·m (20 in. lbs.).

(3) Reinstall

the

instrument

cluster

onto

the

instrument panel. (Refer to 8 - ELECTRICAL/IN-
STRUMENT CLUSTER - INSTALLATION).

(4) Reconnect the battery negative cable.

CLUSTER HOUSING

(1) Assemble the rear cover onto the cluster hous-

ing. Refer to CLUSTER HOUSING REAR COVER.

(2) Assemble the lens and hood unit onto the clus-

ter housing. Refer to CLUSTER LENS AND HOOD.

(3) Reinstall

the

instrument

cluster

onto

the

instrument panel. (Refer to 8 - ELECTRICAL/IN-
STRUMENT CLUSTER - INSTALLATION).

(4) Reconnect the battery negative cable.

INSTALLATION

(1) Position the instrument cluster to the instru-

ment panel by inserting the top of the instrument
cluster between the steering wheel and the top of the
instrument panel, then rolling the bottom of the clus-
ter downward and forward.

(2) Align the instrument cluster with the cluster

opening in the instrument panel and push the cluster
firmly and evenly into place. The instrument panel
wire harness has two self-docking connectors that
will be automatically aligned with, and connected to
the instrument cluster connector receptacles when
the cluster is properly installed in the instrument
panel.

8J - 12

INSTRUMENT CLUSTER

INSTRUMENT CLUSTER (Continued)

(3) Install and tighten the four screws that secure

the instrument cluster to the instrument panel (Fig.
2). Tighten the screws to 2 N·m (17 in. lbs.).

(4) Reinstall the cluster bezel onto the instrument

panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
CLUSTER BEZEL - INSTALLATION).

(5) Reconnect the battery negative cable.

NOTE: Some of the indicators in this instrument
cluster are either programmable (upshift indicator)
or automatically configured (cruise, door and gate
ajar, gear selector indicator, service four-wheel
drive, overdrive-off, and transmission overtemp
indicators) when the cluster is connected to the
vehicle electrical system. This feature allows those
indicators to be enabled or disabled for compatibil-
ity with certain optional equipment. If a new instru-
ment cluster is being installed, use a DRBIII

scan

tool to program the instrument cluster with the
proper vehicle equipment option setting to enable
and/or disable the upshift indicator lamp. Refer to
the appropriate diagnostic information.

ABS INDICATOR

DESCRIPTION

An Antilock Brake System (ABS) indicator is stan-

dard equipment on all instrument clusters. This indi-
cator serves both the standard equipment Rear
Wheel Anti-Lock (RWAL) and optional equipment
4-Wheel Anti-Lock (4WAL) brake systems. The ABS
indicator is located in the Information Center area of
the instrument cluster, to the left of center. The ABS
indicator consists of a stencilled cutout of the Inter-
national Control and Display Symbol icon for “Fail-
ure of Anti-lock Braking System” in the opaque layer
of the instrument cluster overlay. The dark outer
layer of the overlay prevents the indicator from being
clearly visible when it is not illuminated. An amber
lens behind the cutout in the opaque layer of the
overlay causes the icon to appear in amber through
the translucent outer layer of the overlay when it is
illuminated from behind by a Light Emitting Diode
(LED) soldered onto the instrument cluster electronic
circuit board. The ABS indicator is serviced as a unit
with the instrument cluster.

OPERATION

The ABS indicator gives an indication to the vehi-

cle operator when the ABS system is faulty or inop-
erative. This indicator is controlled by a transistor on
the instrument cluster circuit board based upon clus-
ter programming and electronic messages received by
the cluster from the Controller Antilock Brake (CAB)
over the Programmable Communications Interface

(PCI) data bus. The ABS indicator Light Emitting
Diode (LED) receives battery current on the instru-
ment cluster electronic circuit board through the
fused ignition switch output (run-start) circuit when-
ever the ignition switch is in the On or Start posi-
tions; therefore, the LED will always be off when the
ignition switch is in any position except On or Start.
The LED only illuminates when it is provided a path
to ground by the instrument cluster transistor. The
instrument cluster will turn on the ABS indicator for
the following reasons:

• Bulb Test - Each time the ignition switch is

turned to the On position the ABS indicator is illu-
minated by the cluster for about two seconds as a
bulb test.

• ABS Lamp-On Message - Each time the clus-

ter receives a lamp-on message from the CAB, the
ABS indicator will be illuminated. The indicator
remains illuminated until the cluster receives a
lamp-off message from the CAB, or until the ignition
switch is turned to the Off position, whichever occurs
first.

• Communication Error - If the cluster receives

no lamp-on or lamp-off messages from the CAB for
six consecutive seconds, the ABS indicator is illumi-
nated. The indicator remains illuminated until the
cluster receives a valid message from the CAB, or
until the ignition switch is turned to the Off position,
whichever occurs first.

• Actuator Test - Each time the instrument clus-

ter is put through the actuator test, the ABS indica-
tor will be turned on, then off again during the bulb
check portion of the test to confirm the functionality
of the LED and the cluster control circuitry.

• ABS Diagnostic Test - The ABS indicator is

blinked on and off by lamp-on and lamp-off messages
from the CAB during the performance of the ABS
diagnostic tests.

The CAB continually monitors the ABS circuits

and sensors to decide whether the system is in good
operating condition. The CAB then sends the proper
lamp-on or lamp-off messages to the instrument clus-
ter. If the CAB sends a lamp-on message after the
bulb test, it indicates that the CAB has detected a
system malfunction and/or that the ABS system has
become inoperative. The CAB will store a Diagnostic
Trouble Code (DTC) for any malfunction it detects.
Each time the ABS indicator fails to light due to an
open or short in the cluster ABS indicator circuit, the
cluster sends a message notifying the CAB of the
condition, and the CAB will store a DTC. For proper
diagnosis of the antilock brake system, the CAB, the
PCI data bus, or the message inputs to the instru-
ment cluster that control the ABS indicator, a
DRBIII

t scan tool is required. Refer to the appropri-

ate diagnostic information.

INSTRUMENT CLUSTER

8J - 13

INSTRUMENT CLUSTER (Continued)

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