Turn Signal Indicator; Upshift Indicator - Dodge Dakota Sport 2001 Service Manual

8J - 32 INSTRUMENT CLUSTER
TRANSMISSION TEMP INDICATOR (Continued)
transmission over-temperature
instrument cluster circuitry that controls the LED,
(Refer to 8 - ELECTRICAL/INSTRUMENT CLUS-
TER - DIAGNOSIS AND TESTING). For proper
diagnosis of the transmission temperature sensor, the
PCM, the PCI data bus, or the message inputs to the
instrument cluster that control the transmission
over-temperature indicator, a DRBIII
required. Refer to the appropriate diagnostic infor-
mation.

TURN SIGNAL INDICATOR

DESCRIPTION
Two turn signal indicators, one right and one left,
are standard equipment on all instrument clusters.
The turn signal indicators are located near the upper
edge of the instrument cluster overlay, between the
speedometer and the tachometer. Each turn signal
indicator consists of a stenciled cutout of the Interna-
tional Control and Display Symbol icon for "Turn
Warning" in the opaque layer of the instrument clus-
ter overlay. The dark outer layer of the overlay pre-
vents these icons from being clearly visible when
their lamps are not illuminated. The icons appear in
green through the translucent outer layer of the
overlay when the indicator is illuminated from
behind by a replaceable incandescent bulb and bulb
holder unit located on the instrument cluster elec-
tronic circuit board. The turn signal indicators are
serviced as a unit with the instrument cluster.
OPERATION
The turn signal indicators give an indication to the
vehicle operator that the turn signal (left or right
indicator flashing) or hazard warning (both left and
right indicators flashing) have been selected. These
indicators are controlled by two individual hard
wired inputs to the instrument cluster electronic cir-
cuit board. The turn signal indicator bulbs are
grounded on the instrument cluster electronic circuit
board at all times. The turn signal indicator bulbs
only illuminate when they are provided with battery
current by the turn signal and hazard warning cir-
cuitry of the combination flasher through separate
left and right turn signal circuit inputs to the instru-
ment cluster; therefore, these indicators can be illu-
minated, regardless of the ignition switch position.
The turn signal indicators are connected in series
between ground and the output of the combination
flasher circuitry, but in parallel with the other turn
signal circuits. This arrangement allows the turn sig-
nal indicators to remain functional regardless of the
condition of the other circuits in the turn signal and
hazard warning system. For more information on the
indicator or the
scan tool is
turn signal and hazard warning system, (Refer to 8 -
ELECTRICAL/LAMPS/LIGHTING - EXTERIOR -
OPERATION - TURN SIGNAL & HAZARD WARN-
ING SYSTEM). The turn signal indicators can be
diagnosed using conventional diagnostic tools and
methods.
DIAGNOSIS AND TESTING - TURN SIGNAL
INDICATOR
The diagnosis found here addresses an inoperative
turn signal indicator condition. If the problem being
diagnosed is related to inoperative turn signals or
hazard warning lamps, be certain to repair the turn
signal and hazard warning system before attempting
to diagnose or repair the turn signal indicators. If no
turn signal or hazard warning system problems are
found, the following procedure will help locate a
short or open in the left or right turn signal indicator
circuits. Refer to the appropriate wiring information.
The wiring information includes wiring diagrams,
proper wire and connector repair procedures, details
of wire harness routing and retention, connector pin-
out information and location views for the various
wire harness connectors, splices and grounds.
(1) Disconnect and isolate the battery negative
cable. Remove the instrument cluster.
(2) Connect the battery negative cable. Activate
the hazard warning system by moving the hazard
warning switch button to the On position. Check for
battery voltage at the inoperative (right or left) turn
signal circuit cavity of the instrument panel wire
harness connector (Connector C2) for the instrument
cluster. There should be a switching (on and off) bat-
tery voltage signal. If OK, replace the faulty turn sig-
nal indicator bulb. If not OK, repair the open (right
or left) turn signal circuit between the instrument
cluster and the combination flasher as required.

UPSHIFT INDICATOR

DESCRIPTION
An upshift indicator is standard equipment on all
instrument clusters.
equipped with a manual transmission, this indicator
is disabled. The upshift indicator is located near the
center of the tachometer gauge in the instrument
cluster overlay, to the left of center. The upshift indi-
cator consists of an upward pointed arrow icon that
is a stenciled cutout 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 the indi-
However, on vehicles
AN
not