1997 DODGE NEON sensor

Downloaded from www.Manualslib.com manuals search engine ²Crankshaft position sensor
²Camshaft position sensor
²Battery temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Knock sensor
²Intake air temperature sensor
HEATED OXYGEN SENSORS
Circuit A14 is a bus bar in the Power Distribution
Center (PDC), and connects to battery voltage. The
contact side of the Automatic Shut Down (ASD) relay
connects circuit A14 and circuit A142. A 20 amp fuse
in the PDC protects circuits A14 and A142.
Circuit A14 also supplies voltage to the coil side of
the ASD relay. The Powertrain Control Module
(PCM) controls the ground path circuit for the coil
side of the ASD relay on circuit K51. Circuit K51 con-
nects to cavity 67 of the PCM connector.
Circuit A142 splices to supply voltage for the
upstream and downstream heated oxygen sensors.
The A142 circuit also splices to cavity 6 of the
PCM. The input provided by circuit A142 at cavity 6
tells the PCM that the ASD relay energized.
Circuit K41 delivers the signal from the upstream
heated oxygen sensor to the PCM. Circuit K41 con-
nects to cavity 30 of the PCM connector.
Circuit K141 delivers the signal from the down-
stream heated oxygen sensor to the PCM. Circuit
K141 connects to cavity 51 of the PCM connector.
The PCM provides a ground for the upstream and
downstream heated oxygen sensor signals (circuit
K41 and K141) through circuit K4. Circuit K4 con-
nects to cavity 43 of the PCM connector.
Circuit Z1 provides ground for the heater circuits
in each sensor. Circuit Z1 terminates at the left side
of the radiator closure panel.
HELPFUL INFORMATION
Circuit A142 splices to supply voltage to the fuel
injectors, ignition coil, ASD relay, generator, and the
upstream and downstream heated oxygen sensors.
The PCM controls the ground circuit for each of the
components powered by circuit A142.
CRANKSHAFT POSITION SENSOR
Circuit K7 supplies 8 volts from the Powertrain
Control Module (PCM) to the crankshaft position
sensor. The K7 circuit connects to cavity 44 of the
PCM connector.
Circuit K24 from the sensor provides an input sig-
nal to the PCM. The K24 circuit connects to cavity 32
of the PCM connector.
The PCM provides ground for the crankshaft position
sensor signal (circuit K24) through circuit K4. Circuit
K4 connects to cavity 43 of the PCM connector.
HELPFUL INFORMATION
Circuit K7 splices to supply 8 volts to the camshaft
position sensor and vehicle speed sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Camshaft position sensor
²Battery temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Knock sensor
²Intake air temperature sensor
²Vehicle speed sensor
CAMSHAFT POSITION SENSOR
Circuit K7 supplies 8 volts from the Powertrain
Control Module (PCM) to the camshaft position sen-
sor. The K7 circuit connects to cavity 44 of the PCM
connector.
Circuit K44 from the sensor provides an input sig-
nal to the PCM. The K44 circuit connects to cavity 33
of the PCM connector.
The PCM provides ground for the camshaft posi-
tion sensor signal (circuit K44) through circuit K4.
Circuit K4 connects to cavity 43 of the PCM connec-
tor.
HELPFUL INFORMATION
Circuit K7 splices to supply 8 volts to the camshaft
position sensor and vehicle speed sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Crankshaft position sensor
²Battery temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Knock sensor
²Intake air temperature sensor
²Vehicle speed sensor
ENGINE COOLANT TEMPERATURE SENSOR
The engine coolant temperature sensor provides an
input to the Powertrain Control Module (PCM) on
circuit K2. The sensor also operates the engine cool-
ant temperature gauge in the instrument cluster on
circuit G20. Refer to Section 8W-40 for coolant tem-
perature gauge circuit description.
From circuit K2 the engine coolant temperature
sensor draws up to 5 volts from the PCM. The sensor
is a variable resistor. As coolant temperature
changes, the resistance in the sensor changes causing
8W - 30 - 16 8W - 30 FUEL/IGNITION SYSTEMSPL
DESCRIPTION AND OPERATION (Continued)

Downloaded from www.Manualslib.com manuals search engine a change in current draw. The K2 circuit connects to
cavity 26 of the PCM connector.
The PCM provides ground for the engine coolant
temperature sensor signal (circuit K2) through circuit
K4. Circuit K4 connects to cavity 43 of the PCM con-
nector.
HELPFUL INFORMATION
The engine coolant temperature sensor is case
grounded. The case ground provides the ground for
the coolant temperature gauge circuit G20.
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Camshaft position sensor
²Crankshaft position sensor
²Battery temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Knock sensor
²Intake air temperature sensor
²Vehicle speed sensor
THROTTLE POSITION SENSOR
From the Powertrain Control Module (PCM), cir-
cuit K6 supplies 5 volts to the Throttle Position Sen-
sor (TPS). Circuit K6 connects to cavity 61 of the
PCM connector.
Circuit K22 delivers the TPS signal to the PCM.
Circuit K22 connects to cavity 35 of the PCM connec-
tor.
The PCM provides ground for the TPS signal (cir-
cuit K22) through circuit K4. Circuit K4 connects to
cavity 43 of the PCM connector.
HELPFUL INFORMATION
Refer to Group 14 for TPS operation.
Circuit K6 splices to supply 5 volts to the Manifold
Absolute Pressure (MAP) sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Battery temperature sensor
²Camshaft position sensor
²Crankshaft position sensor
²Engine coolant temperature sensor
²Manifold absolute pressure sensor
²Knock sensor
²Intake air temperature sensor
²Vehicle speed sensor
MANIFOLD ABSOLUTE PRESSURE SENSOR
From the Powertrain Control Module (PCM), cir-
cuit K6 supplies 5 volts to the Manifold AbsolutePressure (MAP) sensor. Circuit K6 connects to cavity
61 of the PCM connector.
Circuit K1 delivers the MAP signal to the PCM. Cir-
cuit K1 connects to cavity 36 of the PCM connector.
The PCM provides ground for the MAP sensor sig-
nal (circuit K1) through circuit K4. Circuit K4 con-
nects to cavity 43 of the PCM connector.
HELPFUL INFORMATION
Refer to Group 14 for MAP sensor operation.
Circuit K6 splices to supply 5 volts to the Throttle
Position Sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Battery temperature sensor
²Camshaft position sensor
²Crankshaft position sensor
²Engine coolant temperature sensor
²Throttle position sensor
²Knock sensor
²Intake air temperature sensor
²Vehicle speed sensor
INTAKE AIR TEMPERATURE SENSOR
The intake air temperature sensor provides an
input to the Powertrain Control Module (PCM) on
circuit K21. Circuit K21 connects to cavity 37 of the
PCM connector.
From circuit K21 the intake air temperature sen-
sor draws voltage from the PCM. The sensor is a
variable resistor. As intake air temperature changes,
the resistance in the sensor changes causing a
change in current draw.
The PCM provides ground for the intake air temper-
ature sensor signal (circuit K21) through circuit K4. Cir-
cuit K4 connects to cavity 43 of the PCM connector.
HELPFUL INFORMATION
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Battery temperature sensor
²Camshaft position sensor
²Crankshaft position sensor
²Engine coolant temperature sensor
²Throttle position sensor
²Knock sensor
²Manifold absolute pressure sensor
²Vehicle speed sensor
KNOCK SENSOR
The knock sensor provides an input to the Power-
train Control Module (PCM) on circuit K42. Circuit
K42 connects to cavity 24 of the PCM connector.
PL8W - 30 FUEL/IGNITION SYSTEMS 8W - 30 - 17
DESCRIPTION AND OPERATION (Continued)

Downloaded from www.Manualslib.com manuals search engine The PCM provides ground for the knock sensor sig-
nal (circuit K42) through circuit K4. Circuit K4 con-
nects to cavity 43 of the PCM connector.
HELPFUL INFORMATION
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Battery temperature sensor
²Camshaft position sensor
²Crankshaft position sensor
²Engine coolant temperature sensor
²Throttle position sensor
²Intake air temperature sensor
²Manifold absolute pressure sensor
²Vehicle speed sensor
BATTERY TEMPERATURE SENSOR
From circuit G31 the battery temperature sensor
draws voltage from the Powertrain Control Module
(PCM). The sensor is a variable resistor. As battery
temperature changes, the resistance in the sensor
changes causing a change in current draw. Circuit
G31 connects to cavity 52 of the PCM connector.
The PCM provides ground for the battery tempera-
ture sensor signal (circuit G31) through circuit K4. Cir-
cuit K4 connects to cavity 43 of the PCM connector.
HELPFUL INFORMATION
Circuit K4 splices to supply ground for the signals
from the following:
²Upstream heated oxygen sensor
²Downstream heated oxygen sensor
²Camshaft position sensor
²Crankshaft position sensor
²Engine coolant temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Knock sensor
²Intake air temperature sensor
²Vehicle speed sensor
FUEL INJECTORS
Circuit A14 is a bus bar in the Power Distribution
Center (PDC), and connects to battery voltage. The
contact side of the Automatic Shut Down (ASD) relay
connects circuit A14 and circuit A142. A 20 amp fuse
in the PDC protects circuits A14 and A142.
Circuit A14 also supplies voltage to the coil side of
the ASD relay. The Powertrain Control Module
(PCM) controls the ground circuit for the coil side of
the ASD relay on circuit K51. Circuit K51 connects to
cavity 67 of the PCM connector.
Circuit A142 supplies voltage for the fuel injectors.
The PCM controls the ground circuit of each injector.²Circuit K11 is the ground circuit for Injector #1.
Circuit K11 connects to cavity 13 of the PCM.
²Circuit K12 is the ground circuit for Injector #2.
Circuit K12 connects to cavity 17 of the PCM.
²Circuit K13 is the ground circuit for Injector #3.
Circuit K13 connects to cavity 7 of the PCM.
²Circuit K14 is the ground circuit for Injector #4.
Circuit K14 connects to cavity 16 of the PCM.
HELPFUL INFORMATION
Circuit A142 splices to supply voltage to the fuel
injectors, ignition coil, ASD relay, generator, and the
upstream and downstream heated oxygen sensors.
The PCM controls the ground circuit for each of the
components powered by circuit A142.
The injectors operate in sequence. Refer to Group
14 for system operation.
IGNITION COIL PACK
Circuit A14 is a bus bar in the Power Distribution
Center (PDC), and connects to battery voltage. The
contact side of the Automatic Shut Down (ASD) relay
connects circuit A14 and circuit A142. A 20 amp fuse
in the PDC protects circuits A14 and A142.
Circuit A14 also supplies voltage to the coil side of
the ASD relay. The Powertrain Control Module
(PCM) controls the ground path circuit for the coil
side of the ASD relay on circuit K51. Circuit K51 con-
nects to cavity 67 of the PCM connector.
Circuit A142 supplies voltage for the ignition coil
pack. The coil pack consists of two individual coils
molded together. The PCM controls the ground cir-
cuit of each coil.
²Circuit K19 is the ground circuit for the ignition
coil that fires spark plugs # 1 and # 4. Circuit K19
connects to cavity 2 of the PCM.
²Circuit K17 is the ground circuit for the ignition
coil that fires spark plugs #2 and # 3. Circuit K17
connects to cavity 3 of the PCM.
HELPFUL INFORMATION
Circuit A142 splices to supply voltage to the fuel
injectors, ignition coil, ASD relay, generator, upstream
heated oxygen sensor and downstream heated oxygen
sensor. The PCM controls the ground circuit for each of
the components powered by circuit A142.
IDLE AIR CONTROL MOTOR
The Powertrain Control Module (PCM) operates
the Idle Air Control (IAC) motor through 4 circuits -
K39, K40, K59, and K60. Each circuit connects to
separate cavities in the PCM connector.
²Circuit K39 connects to cavity 57 of the PCM
connector.
²Circuit K40 connects to cavity 48 of the PCM
connector.
8W - 30 - 18 8W - 30 FUEL/IGNITION SYSTEMSPL
DESCRIPTION AND OPERATION (Continued)

Downloaded from www.Manualslib.com manuals search engine 8W-35 ANTI-LOCK BRAKES
INDEX
page
SCHEMATICS AND DIAGRAMS........................................................... 1
DESCRIPTION AND OPERATION.......................................................... 6
Component Page
ABS Hydraulic Modulator..............8W-35-4
ABS Pump Motor....................8W-35-3
ABS Pump Motor Relay.............8W-35-2, 3
ABS Relay Box....................8W-35-2, 3
ABS System Relay...................8W-35-2
ABS Warning Lamp..................8W-35-2
Controller Anti-Lock Brake.......8W-35-2, 3, 4, 5
Data Link Connector..................8W-35-3
Fuse 10 (FB)........................8W-35-2
Fuse 10 (PDC).......................8W-35-3
Fuse 25 (PDC).......................8W-35-4
Fuse Block.........................8W-35-2
G101..........................8W-35-2, 3, 4
G102..............................8W-35-4Component Page
Instrument Cluster...................8W-35-2
Left Front Wheel Speed Sensor..........8W-35-5
Left Rear Wheel Speed Sensor..........8W-35-5
Power Distribution Center...........8W-35-3, 4
Pump Motor Driver...................8W-35-3
Right Front Wheel Speed Sensor........8W-35-5
Right Rear Wheel Speed Sensor.........8W-35-5
S101..............................8W-35-4
S103..............................8W-35-3
S104..............................8W-35-4
S108..........................8W-35-2, 3, 4
S109..............................8W-35-2
S210..............................8W-35-3
Stop Lamp Switch....................8W-35-4
8W - 35 - 2 8W - 35 ANTI-LOCK BRAKESPL

Downloaded from www.Manualslib.com manuals search engine SENSOR SPEED
WHEEL
FRONT
LEFT
LEFT
REAR
WHEEL
SPEED
SENSORRIGHT
FRONT
WHEEL
SPEED
SENSOR
RIGHT
REAR
WHEEL
SPEED
SENSOR
LEFT
FRONT
WHEEL
SPEED
SENSOR
(+)LEFT
FRONT
WHEEL
SPEED
SENSOR
(-) (+)SENSORSPEED WHEELREARLEFT
(-) SENSORSPEED WHEELREARLEFT RIGHT
FRONT
WHEEL
SPEED
SENSOR
(+)RIGHT
FRONT
WHEEL
SPEED
SENSOR
(-) (+)SENSORSPEED WHEELREAR RIGHT
(-) SENSORSPEED WHEELREAR RIGHT
89346712 B8
20
RD/DB
B9
20
RD
34C108
B6
20
WT/DBB7
20
WT
B1
20
WT/BKB2
20
DG/WT
12C108
B2
20
YLB1
20
YL/DBB3
20
LG/DBB4
20
LG
21
21
21
21
B3
20
LG/DBB4
20
LG
CONTROLLER
ANTI-LOCK
BRAKE
PAIR TWISTED
TWISTED
PAIR
TWISTED
PAIR
PAIR TWISTED
PL-RHD8W-35 ANTI-LOCK BRAKES 8W - 35 - 5
PLR03504978W-1

Downloaded from www.Manualslib.com manuals search engine 8W-35 ANTI-LOCK BRAKES
INDEX
page page
DESCRIPTION AND OPERATION
ABS PUMP MOTOR RELAY................ 6
ABS SYSTEM RELAY..................... 6
ABS WARNING LAMP..................... 6
ANTI-LOCK BRAKES..................... 6BRAKE SWITCH INPUT................... 7
DATA LINK CONNECTOR.................. 7
HELPFUL INFORMATION.................. 7
HYDRAULIC MODULATOR................. 6
WHEEL SPEED SENSORS................. 7
DESCRIPTION AND OPERATION
ANTI-LOCK BRAKES
Power for the Anti-Lock brake system is supplied
by two fuses. There is a 15 amp fuse located in the
fuse block cavity 10. This fuse supplies power to the
Controller Anti Lock Brake (CAB), and the ABS sys-
tem relay on the F12 circuit. The F12 circuit also
supplies power to the Powertrain Control Module
(PCM). Power for the fuse is supplied on the A21 cir-
cuit from the ignition switch. This fuse is HOT in the
START/RUN position.
The second fuse is located in the Power Distribu-
tion Center (PDC). It is a 40 amp fuse. This fuse is
HOT at all times and supplies power to the contact
side of the ABS pump motor relay.
There are three grounding points used in the ABS
system. One is a case ground on the CAB. The sec-
ond is the Z12 circuit at the CAB connector cavity 5.
This ground is spliced, and terminates at the left side
of the radiator closure panel.
The third ground is on the Z1 circuit. This ground
is used for the ABS hydraulic modulator, ABS system
relay, and the ABS pump motor. This ground, like the
Z12 ground splices and terminates at the left head-
lamp ground.
Additional information on the circuit function of
the ABS system is listed below. For diagnostic and
testing procedures, refer to the appropriate section of
the Service Manual or the Diagnostic Test Proce-
dures Manual.
ABS WARNING LAMP
The ABS warning lamp is an output from the Con-
troller Anti Lock Brake (CAB) and the ABS relay
box. It is used to alert the operator of a problem in
the ABS system. The G19 circuit from the CAB and
the ABS system relay is used to detect a problem. If
a problem is detected, the CAB grounds the G19 cir-
cuit and illuminates the lamp in the instrument clus-
ter.
Circuit G19 is also an output of the CAB to the
ABS system relay contact side.
ABS SYSTEM RELAY
The system relay is used for the operation of the
ABS system. Power for the relay is supplied on the
B57 circuit from cavity 57 of the Controller Anti Lock
Brake (CAB).
Ground for the relay is on the Z1 circuit. This
ground is spliced in with the pump motor and termi-
nates at the left headlamp ground.
When the system is operating normally power for
the contact side of the relay is supplied from the
CAB on the B57 circuit. It passes through the relay
to the Z1 ground and terminates at the left headlamp
ground. If a problem is detected in the system, the
contact side of the relay switches from the Z1 to the
F12 circuit. This causes the ABS warning lamp in
the instrument cluster to illuminate.
ABS PUMP MOTOR RELAY
The ABS pump motor relay controls when the
pump motor runs. Power for the coil side of the relay
is supplied from cavity 47 of the Controller Anti Lock
Brake (CAB) on the B47 circuit. This circuit also sup-
plies voltage for the contact side of the system relay.
The ground side of the coil is controlled by the B116
circuit. Circuit B116 connects to cavity 16 of the CAB
connector.
Circuit B120 from cavity 20 of the CAB connector
powers the ABS pump motor. This circuit is also used
as an input to the CAB for pump motor monitoring.
HYDRAULIC MODULATOR
The hydraulic modulator is used for the controlling
of the brake system pressure to the wheels. The mod-
ulator is made up of four solenoids.
Circuits involved are, B142 for the left front wheel,
B143 for the right front wheel, B146 for the left rear
wheel, and B148 for the right rear wheel.
The solenoids use a common ground on the Z1 cir-
cuit. There are two Z1 circuits from the modulator.
Both of these grounds terminate at the left headlamp
ground, and are spliced in with the ABS pump motor
and the ABS system relay.
8W - 35 - 6 8W - 35 ANTI-LOCK BRAKESPL

Downloaded from www.Manualslib.com manuals search engine WHEEL SPEED SENSORS
There are four wheel speed sensors, one at each
wheel. The sensors use a tone wheel to determine
wheel speed. Input to the Controller Anti Lock Brake
(CAB) is done on the following circuits. All of these
circuits are a twisted pair.
B8 and B9 for the left front wheel (cavity 8 and
cavity 9).
B6 and B7 for the right front wheel (cavity 6 and
cavity 7).
B3 and B4 for the left rear wheel (cavity 3 and cav-
ity 4).
B1 and B2 for the right rear wheel (cavity 1 and
cavity 2).
BRAKE SWITCH INPUT
Circuit L50 is an input to the Controller Anti Lock
Brake (CAB). The L50 connects to cavity 13 of the
CAB connector. Circuit L50 is spliced in with the
stop lamps and is used to provide the CAB with
information on when the brakes are being applied.
DATA LINK CONNECTOR
Circuit D21 is used for diagnostics of a fault with
the ABS system. It is spliced in with the Powertrain
Control Module (PCM) circuits and used as an output
from the Controller Anti Lock Brake (CAB). Circuit
D21 connects to cavity 51 of the CAB connector.
HELPFUL INFORMATION
²Check the 15 amp fuse located in cavity 10 of
the fuse block.
²Check the 40 amp fuse located in the PDC.
²Check for a good ground at the left headlamp
ground.
²Check the case ground on the CAB
²Refer to the appropriate section of the service
manual, or the Diagnostic Test Procedures Manual.
PL8W - 35 ANTI-LOCK BRAKES 8W - 35 - 7
DESCRIPTION AND OPERATION (Continued)

Downloaded from www.Manualslib.com manuals search engine 8W-40 INSTRUMENT CLUSTER
INDEX
page
SCHEMATICS AND DIAGRAMS........................................................... 1
DESCRIPTION AND OPERATION.......................................................... 7
Component Page
ABS Relay Box......................8W-40-5
Airbag Control Module................8W-40-5
Airbag Warning Lamp.................8W-40-5
Anti-Lock Warning Lamp..............8W-40-5
Brake Warning Lamp.................8W-40-5
Brake Warning Lamp Switch...........8W-40-5
Charge Indicator Lamp................8W-40-5
Check Engine Lamp..................8W-40-6
Cluster Illumination Lamps............8W-40-2
Controller Anti-Lock Brake.............8W-40-5
Engine Coolant Temperature Gauge......8W-40-6
Engine Coolant Temperature Sensor......8W-40-6
Engine Oil Pressure Switch............8W-40-6
Fuel Gauge.........................8W-40-6
Fuel Pump Module...................8W-40-6
Fuse 9 (FB).........................8W-40-2
Fuse 11 (FB)........................8W-40-6
Fuse 13 (PDC).......................8W-40-3
Fuse Block........................8W-40-2, 6
G101..............................8W-40-5
G204..............................8W-40-6
Headlamp Dimmer And Optical
Horn Switch......................8W-40-2
Headlamp Switch..................8W-40-2, 3
High Beam Indicator Lamp.............8W-40-2
Instrument Cluster...........8W-40-2, 3, 4, 5, 6
Key-In Switch.......................8W-40-3Component Page
Left Front Door Jamb Switch...........8W-40-3
Left Park/Turn Signal Lamp............8W-40-4
Left Repeater Lamp..................8W-40-4
Left Turn Indicator Lamp..............8W-40-4
Low Oil Pressure Lamp...............8W-40-6
Park Brake Switch...................8W-40-5
Power Distribution Center.............8W-40-3
Powertrain Control Module.........8W-40-3, 5, 6
Right Park/Turn Signal Lamp...........8W-40-4
Right Repeater Lamp.................8W-40-4
Right Turn Indicator Lamp.............8W-40-4
S107..............................8W-40-5
S112 ..............................8W-40-4
S116 ..............................8W-40-4
S127..............................8W-40-5
S201..............................8W-40-6
S203..............................8W-40-3
S207..............................8W-40-4
S208..............................8W-40-5
S209..............................8W-40-2
S210..............................8W-40-2
S212..............................8W-40-4
Seat Belt Warning Lamp...............8W-40-5
Turn Signal/Hazard Switch.............8W-40-4
Vehicle Speed Sensor..................8W-40-3
8W - 40 - 2 8W - 40 INSTRUMENT CLUSTERPL