Dodge 2000 DURANGO Service Manual page 314

8E - 6 INSTRUMENT PANEL SYSTEMS
DIAGNOSIS AND TESTING
INSTRUMENT CLUSTER
If all of the gauges and/or indicator lamps are inop-
erative, perform the Preliminary Diagnosis. If an
individual gauge or Chrysler Collision Detection
(CCD) data bus message-controlled indicator lamp is
inoperative, go directly to the Self-Diagnostic Test. If
an individual hard wired indicator lamp is inopera-
tive, refer to Instrument Cluster - Hard Wired
Lamp Diagnosis in the Diagnosis and Testing sec-
tion of this group for the procedures to diagnosis that
lamp. For complete circuit diagrams, refer to Instru-
ment Cluster in the Contents of Group 8W - Wiring
Diagrams.
NOTE: Certain indicator lamps in this instrument
cluster are programmable. This feature allows those
indicator lamps to be activated or deactivated with
a DRBIII scan tool through the instrument cluster
electronic circuitry for compatibility with certain
optional equipment. If the problem being diagnosed
involves improper illumination of the cruise-on indi-
cator lamp, the overdrive-off indicator lamp, the
transmission oil temperature warning lamp, or the
upshift indicator lamp, use a DRBIII
be certain that the instrument cluster has been pro-
grammed with the proper vehicle equipment option
settings.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
PRELIMINARY DIAGNOSIS
(1) If the indicator lamps operate, but none of the
gauges operate, go to Step 2. If all of the gauges and
the CCD data bus message-controlled indicator lamps
are inoperative, go to Step 5.
(2) Check the fused B(+) fuse in the junction block.
If OK, go to Step 3. If not OK, repair the shorted cir-
cuit or component as required and replace the faulty
fuse.
(3) Check for battery voltage at the fused B(+) fuse
in the junction block. If OK, go to Step 4. If not OK,
repair the open fused B(+) circuit to the battery as
required.
(4) Disconnect and isolate the battery negative
cable. Remove the instrument cluster. Connect the
scan tool to
GROUP 8M - PASSIVE
STEERING COLUMN,
battery negative cable. Check for battery voltage at
the fused B(+) circuit cavity of the instrument cluster
wire harness connector A. If OK, refer to Instru-
ment Cluster - Self-Diagnostic Test in the Diag-
nosis and Testing section of this group. If not OK,
repair the open fused B(+) circuit to the fuse in the
junction block as required.
(5) Check the fused ignition switch output (run/
start) fuse in the junction block. If OK, go to Step 6.
If not OK, repair the shorted circuit or component as
required and replace the faulty fuse.
(6) Turn the ignition switch to the On position and
check for battery voltage at the fused ignition switch
output (run/start) fuse in the junction block. If OK,
go to Step 7. If not OK, repair the open fused ignition
switch output (run/start) circuit to the ignition switch
as required.
(7) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Install the instrument cluster. Connect the battery
negative cable. Turn the ignition switch to the On
position. Set the park brake. The red brake warning
lamp should light. If OK, go to Step 8. If not OK, go
to Step 9.
(8) Turn the ignition switch to the Off position.
Turn on the park lamps and adjust the panel lamps
dimmer thumbwheel on the headlamp switch to the
full bright position. The cluster illumination lamps
should light. If OK, go to Step 10. If not OK, repair
the open power ground circuit from the instrument
cluster wire harness connector A to ground as
required.
(9) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
OR
Remove the instrument cluster. Connect the battery
negative cable. Turn the ignition switch to the On
position. Check for battery voltage at the fused igni-
tion switch output (run/start) circuit cavity of the
instrument cluster wire harness connector A. If OK,
refer to Instrument Cluster - Self-Diagnostic Test
in the Diagnosis and Testing section of this group. If
not OK, repair the open fused ignition switch output
(run/start) circuit to the fuse in the junction block as
required.
(10) Disconnect and isolate the battery negative
cable. Remove the instrument cluster. Check for con-
tinuity between the logic ground circuit cavity of the
instrument cluster wire harness connector A and a
good ground. There should be continuity. If OK, refer
to Instrument Cluster - Self-Diagnostic Test in
the Diagnosis and Testing section of this group. If not
OK, repair the open logic ground circuit to ground as
required.
DN