Dodge 2000 DURANGO Service Manual page 316

8E - 8 INSTRUMENT PANEL SYSTEMS
DIAGNOSIS AND TESTING (Continued)
(6) The instrument cluster will begin the odometer
walking segment test. This test will require the oper-
ator to visually inspect each odometer segment as it
is displayed to determine a pass or fail condition.
First, all of the segments will be illuminated at once;
then, each individual segment of the odometer dis-
play will be illuminated in sequence. If any segment
in the display fails to illuminate, repeat the test to
confirm the failure. If the failure is confirmed,
replace the faulty instrument cluster. Following the
odometer walking segment test, the self-diagnostic
test will automatically proceed as described in Step
7.
(7) The instrument cluster will perform a bulb
check of each indicator lamp that the instrument
cluster circuitry controls. If an individual amber indi-
cator lamp does not illuminate during this test, the
instrument cluster should be removed. However,
check that the incandescent lamp bulb is not faulty
and that the bulb holder is properly installed on the
instrument cluster electronic circuit board before con-
sidering instrument cluster replacement. If the bulb
and bulb holder check OK, replace the faulty instru-
ment cluster. Each of the red indicators are illumi-
nated by a Light Emitting Diode (LED). If an LED
fails to illuminate during this test, the instrument
cluster must be replaced. Following the bulb check
test, the self-diagnostic test will automatically pro-
ceed as described in Step 8.
(8) The instrument cluster will perform a gauge
actuator test. In this test the instrument cluster cir-
cuitry positions each of the gauge needles at three
different calibration points, then returns the gauge
needles to their relaxed positions. If an individual
gauge does not respond properly, or does not respond
at all during the gauge actuator test, the instrument
cluster should be removed. However, check that the
gauge terminal pins are properly inserted through
the spring-clip terminal pin receptacles on the instru-
ment cluster electronic circuit board before consider-
ing instrument cluster replacement. If the gauge
terminal connections are OK, replace the faulty
instrument cluster.
(9) The self-diagnostic test is now completed. The
instrument cluster will automatically exit the self-di-
agnostic mode and return to normal operation at the
completion of the test, if the ignition switch is turned
to the Off position during the test, or if a vehicle
speed message indicating that the vehicle is moving
is received from the PCM on the CCD data bus dur-
ing the test.
(10) Go back to Step 1 to repeat the test, if
required.
HARD WIRED LAMP DIAGNOSIS
Each of the lamps found in this section depends
upon a hard wired circuit input to the instrument
cluster for proper operation. The following procedures
will help to diagnose conditions that may cause an
inoperative hard wired lamp circuit condition.
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.
BRAKE WARNING LAMP
The diagnosis found here addresses an inoperative
brake warning lamp condition. If the brake warning
lamp stays on with the ignition switch in the On
position and the park brake released, or comes on
while driving, refer to Rear Wheel Antilock for
vehicles equipped with a rear wheel anti-lock brake
system, or refer to Antilock Brakes for vehicles
equipped with a four wheel anti-lock brake system in
the Diagnosis and Testing section of Group 5 -
Brakes for further diagnosis. If no brake system
problem is found, the following procedure will help
locate a faulty park brake switch or park brake
switch sense circuit. For complete circuit diagrams,
refer to Instrument Cluster in the Contents of
Group 8W - Wiring Diagrams.
(1) Check the fused ignition switch output (run/
start) fuse in the junction block. If OK, go to Step 2.
If not OK, repair the shorted circuit or component as
required and replace the faulty fuse.
(2) Turn the ignition switch to the On position.
Check for battery voltage at the fused ignition switch
output (run/start) fuse in the junction block. If OK,
go to Step 3. If not OK, repair the open fused ignition
switch output (run/start) circuit to the ignition switch
as required.
(3) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Disconnect the wire harness connector at the park
brake switch. With the park brake released, check for
continuity between the park brake switch terminal
and a good ground. There should be no continuity. If
OK, go to Step 4. If not OK, adjust or replace the
faulty park brake switch.
(4) Remove the instrument cluster. With the park
brake switch wire harness connector still discon-
nected, check for continuity between the park brake
switch sense circuit cavity of the park brake switch
wire harness connector and a good ground. There
GROUP 8M - PASSIVE
STEERING COLUMN,
DN
OR