Dodge 1997 Neon WIRING DIAGRAMS, Owner'S Manual

Page: 80 / 256

8W-30 FUEL/IGNITION SYSTEMS
INDEX
page page
DESCRIPTION AND OPERATION
AUTOMATIC SHUT DOWN RELAY . . . . . . . . . . 15
BATTERY FEED . . . . . . . . . . . . . . . . . . . . . . . . 14
BATTERY TEMPERATURE SENSOR . . . . . . . . . 18
CAMSHAFT POSITION SENSOR . . . . . . . . . . . 16
CRANKSHAFT POSITION SENSOR . . . . . . . . . 16
DATA LINK CONNECTOR . . . . . . . . . . . . . . . . . 15
DUTY CYCLE EVAP/PURGE SOLENOID . . . . . . 19
EGR TRANSDUCER (EET) SOLENOID . . . . . . . 19
ENGINE COOLANT
TEMPERATURE SENSOR . . . . . . . . . . . . . . . 16
FUEL INJECTORS . . . . . . . . . . . . . . . . . . . . . . . 18
FUEL PUMP MOTOR . . . . . . . . . . . . . . . . . . . . 15
HEATED OXYGEN SENSORS . . . . . . . . . . . . . . 16
IDLE AIR CONTROL MOTOR . . . . . . . . . . . . . . 18
IGNITION COIL PACK . . . . . . . . . . . . . . . . . . . . 18
IGNITION SWITCH . . . . . . . . . . . . . . . . . . . . . . 14
INTAKE AIR TEMPERATURE SENSOR . . . . . . . 17
KNOCK SENSOR . . . . . . . . . . . . . . . . . . . . . . . 18
LOW FUEL DETECT INPUT . . . . . . . . . . . . . . . 19
MANIFOLD ABSOLUTE
PRESSURE SENSOR . . . . . . . . . . . . . . . . . . 17
PARK/NEUTRAL POSITION SWITCH INPUT
(3–SPD TRANSMISSION) . . . . . . . . . . . . . . . . 19
POWER (DEVICE) GROUND . . . . . . . . . . . . . . . 14
POWER STEERING PRESSURE SWITCH . . . . . 19
SIGNAL GROUND . . . . . . . . . . . . . . . . . . . . . . . 14
THROTTLE POSITION SENSOR . . . . . . . . . . . . 17
TORQUE CONVERTER CLUTCH SOLENOID
(TCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
VEHICLE SPEED SENSOR . . . . . . . . . . . . . . . . 15
DESCRIPTION AND OPERATION
IGNITION SWITCH
In the RUN position, the ignition switch connects cir-
cuit A1 from the Power Distribution Center (PDC) to
circuit A21. A 30 amp fuse in the PDC protects circuits
A1 and A21. Circuit A21 feeds a bus bar in the fuse
block. The bus bar feeds circuits G5, F12, and F15.
•
Circuit G5 powers the gauge cluster warning lamps
and the daytime running lamp (DRL) module. Fuse cav-
ity 11 (5 amp) in the fuse block protects circuit G5.
•
Circuit F12 splices to the Powertrain Control
Module (PCM), duty cycle purge solenoid, EGR sole-
noid, ABS system, and a bus bar in the PDC. The
bus bar in the PDC feeds the coil side of the radiator
fan relay, A/C compressor clutch relay, and the fuel
pump relay. A 15 amp fuse in the fuse block, cavity
10, protects circuit F12.
•
Circuit F15 feeds the Airbag Control Module
(ACM). A 10 amp fuse in the fuse block, cavity 9, pro-
tects circuit F15.
BATTERY FEED
Circuit A14 from the Power Distribution Center
(PDC) supplies battery voltage to cavity 46 of the
Powertrain Control Module (PCM). A 20 amp fuse in
the PDC protects circuit A14.
HELPFUL INFORMATION
Circuit A14 connects to a bus bar in the PDC that
the battery feeds. Circuit A14 powers the Automatic
Shut Down (ASD) relay and fuel pump relay. The
A14 circuit also splices to the data link connector.
POWER (DEVICE) GROUND
Circuit Z12 connects to cavities 10 and 50 of the
Powertrain Control Module (PCM). The Z12 circuit
provides ground for PCM internal drivers that oper-
ate high current devices like the injectors and igni-
tion coils.
Internal to the PCM, the power (device) ground cir-
cuit connects to the PCM sensor return circuit (from
circuit K4) and the signal ground circuit (Z11).
HELPFUL INFORMATION
Circuit Z12 which supplies ground for the PCM
high current drivers, has the same termination point
as circuit Z11. The termination point is the left side
of the radiator closure panel.
If the system loses ground for the ganged circuits,
at the left side of the radiator closure panel, the vehi-
cle will not operate. Check the connection at the
ganged ground circuit eyelet.
SIGNAL GROUND
The signal ground circuit Z11 connects to cavity 47
of the PCM. The Z11 circuit provides ground for the
sensors that provide inputs to the PCM. Internal to
the PCM, the signal ground circuit connects to the
PCM sensor return circuit (from circuit K4) and the
power (device) ground circuit (Z12).
The termination point for circuit Z11 is an eyelet
attached to the left side of the radiator closure panel.
8W - 30 - 14 8W - 30 FUEL/IGNITION SYSTEMS
PL