Chrysler 1997 Stratus Convertible RHD Service Manual page 528

8W - 40 - 10
DESCRIPTION AND OPERATION
ABS WARNING LAMP . . . . . . . . . . . . . . . . . . . . 12
AIRBAG WARNING LAMP . . . . . . . . . . . . . . . . . 12
BRAKE WARNING LAMP . . . . . . . . . . . . . . . . . . 12
CCD BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CHARGING SYSTEM WARNING LAMP . . . . . . . 11
CHECK ENGINE (MALFUNCTION INDICATOR)
LAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CRUISE (VEHICLE SPEED CONTROL)
ENGAGED LAMP . . . . . . . . . . . . . . . . . . . . . . 12
DECK LID AJAR LAMP . . . . . . . . . . . . . . . . . . . . 11
ENGINE COOLANT TEMPERATURE GAUGE . . . 11
ENGINE COOLANT TEMPERATURE LAMP . . . . 12
FUEL GAUGE . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DESCRIPTION AND OPERATION
INSTRUMENT CLUSTER
The Instrument Cluster, located on the left side of
the instrument panel, provides the operator with
gauges and warning lamps indicating vehicle opera-
tion. All gauges, regardless of engine type, are driven
by the CCD Bus from the Body Control Module
(BCM).
The indicator lamps for the Seat Belt, Charging
System, Vehicle Speed Control (Cruise), Airbag,
Check Engine (Malfunction Indicator Lamp), Low
Fuel, High Beam, Traction Control Active, Traction
Control Off, and Engine Coolant Temperature are
also driven by the BCM.
Battery voltage for the instrument cluster is pro-
vided from two different sources. One is the F33 cir-
cuit which supplies battery voltage for the cluster.
This circuit is protected by 20 amp fuse and located
in cavity 7 of the junction block. Power for the fuse is
supplied by circuit A13. This fuse is HOT at all times
and protected by a 40 amp fuse located in cavity 12
of the Power Distribution Center (PDC). Circuit A13
also supplies power to the fuses for the horns, and
the cigar lighter.
The second power source for the cluster is the F11
circuit. This circuit is HOT in the OFF, START, and
RUN positions. The F11 circuit is protected by a 10
amp fuse located in cavity 11 of the junction block.
Illumination lamps, internal to the cluster, receive
battery voltage on the E2 circuit. This circuit origi-
nates in the BCM and lamp intensity is controlled by
the BCM. Ground for the lamps is provided on the Z1
8W - 40 INSTRUMENT CLUSTER
8W-40 INSTRUMENT CLUSTER
INDEX
page
HELPFUL INFORMATION . . . . . . . . . . . . . . . . . . 13
HIGH BEAM INDICATOR LAMP . . . . . . . . . . . . . 13
INSTRUMENT CLUSTER . . . . . . . . . . . . . . . . . . 10
LOW FUEL WARNING LAMP . . . . . . . . . . . . . . . 13
LOW WASHER FLUID LAMP . . . . . . . . . . . . . . . 13
ODOMETER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
OIL PRESSURE LAMP . . . . . . . . . . . . . . . . . . . . 12
PRNDL (Electronic) . . . . . . . . . . . . . . . . . . . . . . . 11
REAR FOG LAMP ON INDICATOR . . . . . . . . . . . 13
RIGHT AND LEFT TURN SIGNAL INDICATORS . 12
SEAT BELT INDICATOR . . . . . . . . . . . . . . . . . . . 11
SPEEDOMETER . . . . . . . . . . . . . . . . . . . . . . . . . 10
TACHOMETER . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TRIP ODOMETER . . . . . . . . . . . . . . . . . . . . . . . 11
circuit and terminates at the instrument panel left
side cowl.
CCD BUS
The CCD Bus is used to supply all of the commu-
nications between the Body Control Module (BCM)
and the instrument cluster. The bus wires are a
twisted pair. There are two different circuits used for
the bus.
The positive side of the bus wire is accomplished
on the D1 circuit, and the negative is on the D2 cir-
cuit.
SPEEDOMETER
The speedometer receives its information across
the CCD Bus from the Body Control Module (BCM).
Information on vehicle speed is transmitted from the
Powertrain Control Module (PCM) across the CCD
Bus to the BCM.
The PCM receives its information on vehicle speed
on the G7 circuit from the Transmission Control
Module (TCM) on automatic transmission vehicles.
The BCM calculates the position of the speedome-
ter pointer based on the input from the PCM and
adjusts the position of the gauge pointer as neces-
sary. This signal is sent over the CCD Bus to the
instrument cluster.
TACHOMETER
The tachometer receives its information across the
CCD Bus from the Body Control Module (BCM).
Information on engine RPM is transmitted from the
Powertrain Control Module (PCM) across the CCD
Bus to the BCM. The BCM calculates the position of
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