Dodge dakota 2002 Service Manual page 500

DR
INSTRUMENT CLUSTER (Continued)
1 - MALFUNCTION INDICATOR LAMP
2 - VOLTAGE GAUGE
3 - LEFT TURN INDICATOR
4 - TACHOMETER
5 - AIRBAG INDICATOR
6 - HIGH BEAM INDICATOR
7 - SEATBELT INDICATOR
8 - SPEEDOMETER
9 - RIGHT TURN INDICATOR
10 - OIL PRESSURE GAUGE
11 - CARGO LAMP INDICATOR
12 - DOOR AJAR INDICATOR
13 - ABS INDICATOR
The EMIC microprocessor smooths the input data
using algorithms to provide gauge readings that are
accurate, stable and responsive to operating condi-
tions. These algorithms are designed to provide
gauge readings during normal operation that are con-
sistent with customer expectations. However, when
abnormal conditions exist such as high coolant tem-
perature, the algorithm can drive the gauge pointer
to an extreme position and the microprocessor can
sound a chime through the on-board audible tone
generator to provide distinct visual and audible indi-
cations of a problem to the vehicle operator. The
instrument cluster circuitry may also produce audi-
ble warnings for other electronic modules in the vehi-
cle based upon electronic tone request messages
received over the PCI data bus. Each audible warn-
ing is intended to provide the vehicle operator with
an audible alert to supplement a visual indication.
Fig. 4 Gauges & Indicators - Diesel Engine
INSTRUMENT CLUSTER
14 - ENGINE TEMPERATURE GAUGE
15 - SECURITY INDICATOR
16 - GEAR SELECTOR INDICATOR DISPLAY (INCLUDES
CRUISE & UPSHIFT INDICATORS)
17 - WATER-IN-FUEL INDICATOR
18 - BRAKE INDICATOR
19 - WAIT-TO-START INDICATOR
20 - ODOMETER/TRIP ODOMETER DISPLAY (INCLUDES
ENGINE HOURS, WASHER FLUID, LAMP OUTAGE,
OVERDRIVE-OFF & SERVICE 4x4 INDICATORS)
21 - ODOMETER/TRIP ODOMETER SWITCH BUTTON
22 - FUEL GAUGE
23 - LOW FUEL INDICATOR
24 - TRANSMISSION OVERTEMP INDICATOR
25 - CHECK GAUGES INDICATOR
The EMIC circuitry operates on battery current
received through a fused B(+) fuse in the Integrated
Power Module (IPM) on a non-switched fused B(+)
circuit, and on battery current received through a
fused ignition switch output (run-start) fuse in the
IPM on a fused ignition switch output (run-start) cir-
cuit. This arrangement allows the EMIC to provide
some features regardless of the ignition switch posi-
tion, while other features will operate only with the
ignition switch in the On or Start positions. The
EMIC circuitry is grounded through a ground circuit
and take out of the instrument panel wire harness
with an eyelet terminal connector that is secured by
a ground screw to a ground location near the center
of the instrument panel structural support.
The EMIC also has a self-diagnostic actuator test
capability, which will test each of the PCI bus mes-
sage-controlled functions of the cluster by lighting
the appropriate indicators, positioning the gauge nee-
8J - 7