Dodge Dakota 2001, Service Manual

Page: 448 / 2307

DRBIII
t
scan tool is required. Refer to the appropri-
ate diagnostic information.
DIAGNOSIS AND TESTING - WAIT-TO-START
INDICATOR
The diagnosis found here addresses an inoperative
wait-to-start indicator condition. If the problem being
diagnosed is related to indicator accuracy, be certain
to confirm that the problem is with the indicator and
not with a faulty engine coolant temperature sensor,
or an inoperative Engine Control Module (ECM). If
no engine coolant temperature sensor or ECM prob-
lem is found, the following procedure will help to
locate a short or open in the wait-to-start indicator
driver circuit. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
details of wire harness routing and retention, connec-
tor pin-out information and location views for the
various wire harness connectors, splices and grounds.
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.
INDICATOR DOES NOT ILLUMINATE WITH ENGINE COLD
(1) Disconnect and isolate the battery negative
cable. Remove the instrument cluster from the
instrument panel. Disconnect the instrument panel
wire harness connector (Connector C1) for the ECM
from the ECM connector receptacle. Check for conti-
nuity between the wait-to-start indicator driver cir-
cuit cavities of the instrument panel wire harness
connector (Connector C1) for the instrument cluster
and the instrument panel wire harness connector
(Connector C1) for the ECM. There should be conti-
nuity. If OK, replace the faulty wait-to-start indicator
bulb and bulb holder unit. If not OK, repair the open
wait-to-start indicator driver circuit between the
instrument cluster and the ECM as required.
INDICATOR STAYS ILLUMINATED WITH ENGINE WARM
(1) Disconnect and isolate the battery negative
cable. Remove the instrument cluster from the
instrument panel. Disconnect the instrument panel
wire harness connector (Connector C1) for the ECM
from the ECM connector receptacle. Check for conti-
nuity between the wait-to-start indicator driver cir-
cuit cavity of the instrument panel wire harness
connector (Connector C1) for the instrument cluster
and a good ground. There should be no continuity. If
OK, use a DRBIII
t
scan tool to diagnose the ECM.
Refer to the appropriate diagnostic information. If
not OK, repair the shorted wait-to-start indicator
driver circuit between the instrument cluster and the
ECM as required.
WASHER FLUID INDICATOR
DESCRIPTION
A washer fluid indicator is standard equipment on
all instrument clusters. The washer fluid indicator is
located in the Information Center area of the instru-
ment cluster, to the right of center. The washer fluid
indicator consists of a stenciled cutout of the Interna-
tional Control and Display Symbol icon for “Wind-
shield Washer Fluid” 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 illu-
minated from behind by a Light Emitting Diode
(LED) soldered onto the instrument cluster electronic
circuit board. The washer fluid indicator is serviced
as a unit with the instrument cluster.
OPERATION
The washer fluid indicator gives an indication to
the vehicle operator when the fluid level in the
washer fluid reservoir is low. This indicator is con-
trolled by a transistor on the instrument cluster elec-
tronic circuit board based upon cluster programming
and a hard wired washer fluid level switch input to
the cluster. The washer fluid indicator Light Emit-
ting Diode (LED) receives battery current on the
instrument cluster electronic circuit board through
the fused ignition switch output (run-start) circuit
whenever the ignition switch is in the On or Start
positions; therefore, the indicator will always be off
when the ignition switch is in any position except On
or Start. The LED only illuminates when it is pro-
vided a path to ground by the instrument cluster
transistor. The instrument cluster will turn on the
washer fluid indicator for the following reasons:
•
Bulb Test - Each time the ignition switch is
turned to the On position the indicator is illuminated
for about two seconds as a bulb test.
AN
INSTRUMENT CLUSTER 8J - 35
WAIT-TO-START INDICATOR (Continued)