1997 DODGE NEON Vehicle speed sensor

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-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

Downloaded from www.Manualslib.com manuals search engine 13FUSE10A
14
13
BATT A0
SPEEDOMETERCHIMELOW
FUEL
LEVEL
INDICATOR
LAMP
TACHOMETER
DRIVERODOMETER
DRIVER
000000
TACHOMETERODOMETER
M1
18
PK
M1
22
PK
S203
13C103
7366 TACHOMETER
SIGNAL
POWERTRAIN
CONTROL
MODULE
G21
20
GY/LB
G21
22
GY/LB
G7
20
WT/OR
G7
22
WT/OR
85C103
G7
20
WT/ORG7
18
WT/OR
3
2C160VEHICLE
SPEED
SENSOR
C2
5
HEADLAMP
SWITCH
0 OFF
1 PARK
2 HEAD
C110C17C16
VEHICLE
SPEED
SENSOR
SIGNAL
0
12
6 51 2
KEY-IN
SWITCH
LEFT
FRONT
DOOR
JAMB
SWITCH
M1
22
PK
POWER
DISTRIBUTION
CENTER
INSTRUMENT
CLUSTER
G26
20
LB
G26 20LB
G16 20BK/LBG16
20
BL/LB
9C230
BL/LB20 G16
C1 C1
SIGNAL SENSORSPEED VEHICLE
(8W-10-8)
(8W-10-8)(8W-30-8)
(8W-30-11)(8W-30-8)
(8W-50-2) (8W-10-4) (8W-10-4)
PL-RHD8W-40 INSTRUMENT CLUSTER 8W - 40 - 3
PLR04002978W-1

Downloaded from www.Manualslib.com manuals search engine 8W-40 INSTRUMENT CLUSTER
INDEX
page page
DESCRIPTION AND OPERATION
AIRBAG WARNING LAMP.................. 8
ANTI-LOCK WARNING LAMP............... 9
BRAKE WARNING INDICATOR LAMP......... 8
CHARGE INDICATOR LAMP................ 8
ENGINE COOLANT TEMPERATURE GAUGE . . . 7
FUEL GAUGE........................... 7
HEADLAMP ON CHIME.................... 8
HELPFUL INFORMATION.................. 9
HIGH BEAM INDICATOR LAMP.............. 8
INSTRUMENT CLUSTER.................. 7KEY-IN CHIME.......................... 8
LOW FUEL LAMP........................ 8
LOW OIL PRESSURE LAMP................ 8
ODOMETER............................ 8
RIGHT AND LEFT TURN
SIGNAL INDICATORS................... 8
SEAT BELT WARNING INDICATOR........... 8
SERVICE ENGINE SOON LAMP............. 8
SPEEDOMETER......................... 7
TACHOMETER.......................... 7
DESCRIPTION AND OPERATION
INSTRUMENT CLUSTER
The Instrument Cluster, located on the right side
of the instrument panel, provides the operator with
gauges and warning lamps relating to vehicle opera-
tion. All gauges in the standard and optional cluster
are magnetic type and logic driven.
Battery voltage for the clusters warning lamps and
gauges is provided on the G5 circuit. This circuit con-
nects from the fuse block and is protected bya5amp
fuse located in cavity 11. The cluster is powered only
when the ignition switch is in the START or RUN
position. The cluster is also powered on initial driv-
er's door opening.
Illumination lamps, internal to the cluster, receive
battery voltage on the E2 circuit from the 4 amp fuse
located in cavity 12 of the fuse block. This circuit is
HOT only when the headlamp switch is in the ON
position. Grounding for the cluster is provided on the
Z3 circuit and terminates at the instrument panel
left center support.
The M1 circuit also feeds the cluster through a 10
amp fuse in the Power Distribution Center (PDC).
This fuse is HOT at all times and also used to power
the underhood lamp, and the interior lamps. The
fuse is also lifted OPEN during vehicle shipping to
reduce battery draw.
SPEEDOMETER
The speedometer and odometer receive their infor-
mation on the G7 circuit from the Vehicle Speed Sen-
sor (VSS) on manual and 3±spd automatic
transmission applications. The G7 circuit also pro-
vides a signal to the Powertrain Control Module
(PCM).Logic internal to the instrument cluster adjusts the
position of the gauge pointer to the correct vehicle
speed using the signal on the G7 circuit.
TACHOMETER
The tachometer is connected to the Powertrain
Control Module (PCM) on the G21 circuit. It uses
solid state circuity to decode the ignition pulses
received from the PCM to adjust the gauge pointer to
the proper position.
ENGINE COOLANT TEMPERATURE GAUGE
The temperature gauge is connected to the engine
coolant temperature sensor on the G20 circuit. The
engine coolant temperature sensor for the gauge is a
combination unit. One side of the unit is used for the
Powertrain Control Module (PCM) and the other side
for the cluster. The sending unit is case grounded to
the engine.
The logic driven gauge moves in response to the
measured resistance of the engine coolant tempera-
ture sending unit.
FUEL GAUGE
The fuel level gauge is connected to the fuel pump
module on the G4 circuit. The fuel pump module con-
tains the fuel pump and a variable resistor for the
gauge. Grounding for the fuel pump module is pro-
vided on the Z2 circuit and terminates at the left
rear wheel house.
The logic driven gauge moves in response to the
measured resistance of the fuel tank sending unit.
The fuel level sensor contains a variable resistor.
As the position of the float arm on the level sensor
changes, the resistor changes the current flow
through the fuel gauge circuit. A change in current
flow alters the magnetic field in the fuel gauge which
changes the pointer position.
PL8W - 40 INSTRUMENT CLUSTER 8W - 40 - 7

Downloaded from www.Manualslib.com manuals search engine 3232
SENSOR OXYGEN
HEATED
DOWNSTREAMCRANKSHAFT
POSITION
SENSOR
SENSOR OXYGEN
HEATED
UPSTREAM VEHICLE
SPEED
SENSOR
S118
K4
20
BK/LBK4
20
BK/LBK4
20
BK/LBK4
18
BK/LB
K4
18
BK/LB
CAMSHAFT
POSITION
SENSORSENSOR
KNOCK
BATTERY
TEMPERATURE
SENSOR
SENSOR TEMPERATURE
COOLANT
ENGINETHROTTLE
POSITION
SENSOR
122
AA1
K4
20
BK/LB
K4
20
BK/LBK4
20
BK/LBK4
20
BK/LBK4
20
BK/LB
K4
20
BK/LB
10C161
K4
20
BK/RDK4
20
BK/LB
2.0L
SOHC DOHC2.0L
S120
K4
20
BK/LB
S110
SENSOR IAT/
MAP
(8W-30-3)(8W-30-7)
(8W-30-3)(8W-30-8)
(8W-30-7)(8W-30-6)
(8W-30-7)
(8W-30-7)(8W-30-6)
(8W-30-3)
(8W-30-6)
8W - 70 - 2 8W-70 SPLICE INFORMATIONPL-RHD
978W-1PLR07001

Downloaded from www.Manualslib.com manuals search engine Component Page
Right Instrument Panel Speaker
(Premium).......................8W-80-31
Right License Lamp.................8W-80-31
Right Park/Turn Signal Lamp..........8W-80-31
Right Power Mirror..................8W-80-32
Right Rear Door Lock Motor...........8W-80-32
Right Rear Fog Lamp................8W-80-32
Right Rear Speaker..................8W-80-32
Right Rear Wheel Speed Sensor........8W-80-32
Right Repeater Lamp................8W-80-33
Right Tail/Stop Lamp................8W-80-33
Right Turn Signal Lamp..............8W-80-33
Solid State Fan Relay................8W-80-33
Stop Lamp Switch...................8W-80-33Component Page
Sunroof Slide Switch.................8W-80-34
Sunroof Vent Switch.................8W-80-34
Throttle Position Sensor (TPS).........8W-80-34
Torque Convertor Clutch (TCC)
Solenoid (ATX)...................8W-80-34
Trunk Lamp.......................8W-80-34
Turn Signal/Hazard Switch............8W-80-35
Upstream Heated Oxygen Sensor.......8W-80-35
Vapor Canister Leak Detector..........8W-80-35
Vehicle Speed Sensor.................8W-80-35
Windsheild Washer Pump Motor........8W-80-36
Wiper Motor.......................8W-80-36
8W - 80 - 4 8W - 80 CONNECTOR PIN-OUTSPL
DESCRIPTION AND OPERATION (Continued)

Downloaded from www.Manualslib.com manuals search engine 978W-1
8W - 80 - 19 PL-RHD 8W-80 CONNECTOR PIN-OUTS
PLR08019
BLACK
51
10 6
IGNITION
SWITCH
CAV CIRCUIT FUNCTION
1 Z1 22BK GROUND
2 G9 22GY/BK RED BRAKE WARNING LAMP DRIVER
3 A2 12PK/BK FUSED B(+)
4 A22 12BK/OR IGNITION SWITCH OUTPUT (RUN)
5Ð Ð
6Ð Ð
7 A1 14RD FUSED (B+)
8 A31 14BK/WT IGNITION SWITCH OUTPUT (ACC/RUN)
9 A21 14DB IGNITION SWITCH OUTPUT (RUN/START)
10 A41 14YL/BK IGNITION SWITCH OUTPUT (START)
CAV CIRCUIT FUNCTION
1 K241 20GY/BK IMMOBILIZER SENSOR
2 K240 20GY IMMOBILIZER SENSOR
IMMOBILIZER
ENGINE SENSOR
CAV CIRCUIT FUNCTION
1 K241 20GY/BK IMMOBILIZER ENGINE SENSOR
2 K4 20BK/LB SENSOR GROUND
3K7 20OR 8 VOLT SUPPLYK7 20OR 8 VOLT SUPPLY
4 K240 GY IMMOBILIZER ENGINE SENSORIMMOBILIZER
SENSOR
CAV CIRCUIT FUNCTION
1Ð Ð
2 L3 16RD/OR DIMMER SWITCH HIGH BEAM OUTPUT
3 L60 22TN RIGHT TURN SIGNAL
4 G10 20LG/RD SEAT BELT SWITCH SENSE
5 G5 20DB/WT FUSED IGNITION SWITCH OUTPUT (RUN/START)
6 M1 22PK FUSED B(+)
7 G21 22GY/LB TACHOMETER SIGNAL
8 Z3 16BK/OR GROUND
9 R41 18BK/TN AIRBAG WARNING LAMP DRIVER
10 G7 22WT/OR VEHICLE SPEED SENSOR SIGNAL
BLACK
5 1
10 6
INSTRUMENT CLUSTER Ð C1
CAV CIRCUIT FUNCTION
1 G6 22GY OIL PRESSURE SWITCH SENSE
2 G19 22LG/OR ABS WARNING LAMP DRIVER
3 G3 22BK/PK CHECK ENGINE LAMP DRIVER
4 G20 22VT/YL ECT GAUGE SENSOR SIGNAL
5 G26 20LB KEY-IN IGNITION SWITCH SENSE
6 G9 22GY/BK RED BRAKE WARNING LAMP DRIVER
7 G12 22TN/BK GENERATOR LAMP DRIVER
8 L61 22LG LEFT TURN SIGNAL
9 E2 22OR PANEL LAMPS DRIVER
10 G4 20DB FUEL LEVEL SENSOR SIGNAL
BLACK
5 1
10 6
INSTRUMENT CLUSTER Ð C2
1 2
BLACK
12
34
BLACK
GRAY
NATURAL
12
34

Downloaded from www.Manualslib.com manuals search engine 978W-1
8W - 80 - 27 PL-RHD 8W-80 CONNECTOR PIN-OUTS
PLR08027
CAV CIRCUIT FUNCTION
61 K6 20VT/WT 5 VOLT SUPPLY
62 K29 20WT/PK STOP LAMP SWITCH SENSE
63 Ð Ð
64 C28 18DB/OR A/C COMPRESSOR CLUTCH RELAY CONTROL
65 D21 20PK SCI TRANSMIT
66 G7 20WT/OR VEHICLE SPEED SENSOR SIGNAL
67 K51 18DB/YL AUTOMATIC SHUT DOWN RELAY CONTROL
68 K52 20PK/BK DUTY CYCLE EVAP/PURGE SOLENOID CONTROL
69 Ð Ð
70 Ð Ð
71 Z2 18BK/OR Ð
72 K107 18OR VAPOR CANISTER PUMP SWITCH DRIVER
73 G21 20GY/LB TACHOMETER SIGNAL
74 K31 18BR FUEL PUMP RELAY CONTROL
75 D20 20LG SCI RECEIVE
76 Ð **Ð
76 T41 20BR/YLllPARK/NEUTRAL POSITION SWITCH SENSE
77 K106 18WT/LG VAPOR CANISTER SOLENOID DRIVER
78 Ð Ð
79 Ð **Ð
79 K54 20OR/BKllTORQUE CONVERTOR CLUTCH SOLENOID CONTROL
80 Ð Ð
(CONTINUED)
*2.0L (SOHC) ENGINEl2.0L (DOHC) ENGINE
**MTXllATX
CAV CIRCUIT FUNCTION
1Ð Ð
2 K19 18BK/GY IGNITION COIL NO. 1, 3 DRIVER
3 K17 18DB/TN IGNITION COIL NO. 2, 4 DRIVER
4 K20 18DG GENERATOR FIELD DRIVER
5 V32 20YL/RD SPEED CONTROL FEED
6 A142 18DG/OR AUTOMATIC SHUT DOWN RELAY OUTPUT
7 K13 18YL/WT INJECTOR NO. 3 DRIVER
8 G3 20BK/PK CHECK ENGINE LAMP DRIVER
9Ð Ð
10 Z12 18BK/TN GROUND
11 Ð Ð
12 Ð Ð
13 K11 18WT/DB INJECTOR NO. 1 DRIVER
14 Ð Ð
15 Ð Ð
16 K14 18LB/BR INJECTOR NO. 4 DRIVER
17 K12 18TN INJECTOR NO. 2 DRIVER
18 K173 20LG RAD FAN PULSE CONTROL
19 Ð Ð
20 F12 18DB/WT FUSED IGNITION SWITCH OUTPUT (RUN/START)
21 Ð Ð
22 Ð Ð
23 G4 20DB FUEL LEVEL SENSOR SIGNAL
24 K42 20BK/LGlKNOCK SENSOR SIGNAL
24 K42 20DB/LG
*KNOCK SENSOR SIGNAL
31 40
21 30
11 20
110
POWERTRAIN CONTROL
MODULE Ð C2
BLACK
(CONTINUED ON NEXT PAGE)