1999 DODGE NEON Engine Coolant Temperature Sensor

(1) Install target magnet in end of camshaft.
Tighten mounting screw to 3 N´m (30 in. lbs.) torque.
(2) Install camshaft position sensor. Tighten sensor
mounting screws to 9 N´m (80 in. lbs.) torque.
(3) Carefully attach electrical connector to cam-
shaft position sensor. Installation at an angle may
damage the sensor pins.
(4) Install filtered air tube. Tighten clamps to 3
N´m61 (25 in. lbs.65) torque.
CRANKSHAFT POSITION SENSOR
The crankshaft position sensor mounts to the
engine block behind the generator, just above the oil
filter (Fig. 37).
REMOVAL
(1) Disconnect electrical connector from crankshaft
position sensor.
(2) Remove sensor mounting screw. Remove sensor.
INSTALLATION
Reverse procedure for installation.
COMBINATION ENGINE COOLANT TEMPERATURE
SENSORÐSOHC
The combination engine coolant sensor is located at
the rear of the cylinder head next to the camshaft
position sensor (Fig. 38). New sensors have sealant
applied to the threads.
REMOVAL
(1) With the engine cold, drain the cooling system
until coolant level drops below sensor. Refer to Group
7, Cooling System.
(2) Disconnect coolant sensor electrical connector.
(3) Remove coolant sensor
INSTALLATION
(1) Install coolant sensor. Tighten sensor to 18.6
N´m (165 in. lbs.) torque.
(2) Attach electrical connector to sensor.
(3) Fill cooling system. Refer to Group 7, Cooling
System.
COMBINATION ENGINE COOLANT TEMPERATURE
SENSORÐDOHC
The coolant sensor threads into the intake mani-
fold next to the thermostat housing (Fig. 39). New
sensors have sealant applied to the threads.
REMOVAL
(1) With the engine cold, drain coolant until level
drops below cylinder head. Refer to Group 7, Cooling
System.
(2) Disconnect coolant sensor electrical connector.
(3) Remove coolant sensor.
INSTALLATION
(1) Install coolant sensor. Tighten sensor to 18.6
N´m (165 in. lbs.) torque.
(2) Attach electrical connector to sensor.
(3) Fill cooling system. Refer to Group 7, Cooling
System.
Fig. 36 Target Magnet Installation
Fig. 37 Crankshaft Position Sensor
Fig. 38 Engine Coolant Temperature Sensor
PLIGNITION SYSTEM 8D - 15
REMOVAL AND INSTALLATION (Continued)

MAP/IAT SENSORÐSOHC
Refer to Group 14, Fuel Injection Section for
Removal/Installation.
MAP/IAT SENSORÐDOHC
Refer to Group 14, Fuel Injection Section for
Removal/Installation..
THROTTLE POSITION SENSOR
Refer to Group 14, Fuel Injection Section, for
Removal/Installation.
IGNITION SWITCH
The ignition switch attaches to the lock cylinder
housing on the end opposite the lock cylinder (Fig.
40). For ignition switch terminal and circuit identifi-
cation, refer to Group 8W, Wiring Diagrams.
REMOVAL
(1) Disconnect negative cable from battery.
(2) Place key cylinder in RUN position. Through
the hole in the lower shroud, depress lock cylinder
retaining tab and remove key cylinder (Fig. 41).
(3) Remove upper and lower shrouds from steering
column.
(4) Disconnect electrical connectors from ignition
switch.
(5) Remove ignition switch mounting screw (Fig.
42) with a #10 Torxtbit.
(6) Depress retaining tabs (Fig. 43) and pull igni-
tion switch from steering column.
INSTALLATION
(1) Ensure the ignition switch is in the RUN posi-
tion and the actuator shaft in the lock housing is in
the RUN position.
(2) Carefully install the ignition switch. The
switch will snap over the retaining tabs (Fig. 44).
Install mounting screw (Fig. 42).
Fig. 39 Engine Coolant Temperature SensorÐDOHC
Fig. 40 Ignition SwitchÐViewed From Below
Column
Fig. 41 Steering Column Shrouds
Fig. 42 Ignition Switch Mounting Screw
8D - 16 IGNITION SYSTEMPL
REMOVAL AND INSTALLATION (Continued)

(8) If all tests performed test good, replace the dial
and gauge assembly.
(9) If the tachometer continues to be inoperative,
replace the print circuit board.
TEMPERATURE GAUGE
(1) Disconnect the coolant temperature sensor
(Fig. 12).
(2) Turn ignition switch ON. The temperature
gauge should be at its lowest position. Turn ignition
switch OFF.
(3) Ground temperature gauge sending unit con-
nector Pin 3. Refer to Group 8W, wiring Diagrams.
Turn ignition switch ON. The temperature gauge
should be at its highest position. After the seat belt
lamp goes out, the cluster should chime for about
eight seconds.
(a) If OK, check temperature sending unit con-
nector for proper connection. If connections are OK,
replace the sending unit.
(b) If not OK, and the high temperature chime
sounds but the gauge shows cold, replace the gauge
assembly. If gauge is still not working, replace the
printed circuit board.
SPEEDOMETER SYSTEM
The vehicle is equipped with a electronically driven
speedometer and odometer assemblies. A signal is
sent from a transmission-mounted vehicle speed sen-
sor to the speedometer circuitry through the wiring
harness.
SEAT BELT REMINDER SYSTEM TEST
For testing of this system refer to Group 8U,
Chime Warning/Reminder Systems.
SENDING UNIT
When a problem occurs with a cluster gauge check
for a defective sending unit or wiring. Do this before
disassembling the cluster.(1) Sending units and wiring can be checked by
grounding the connector leads at the sending unit in
the vehicle.
(2) With the ignition in the ON position, a
grounded input will cause the fuel or temperature
gauge to read at or above maximum.
SERVICE ENGINE SOON INDICATOR
Refer to Group 25, Emission Control Systems for
procedures.
VEHICLE SPEED SENSOR TEST
To test the vehicle speed sensor and related compo-
nents use a scan tool (DRB), and refer to the appro-
priate Powertrain Diagnostics Test Procedure
Manual.
REMOVAL AND INSTALLATION
ASH RECEIVER RETAINER AND LAMP
REMOVAL
(1) Open up and remove the ash receiver recepta-
cle.
(2) Remove the center bezel.
(3) Remove the two ash receiver retainer attaching
screws from the upper-rearward face and remove
retainer.
(4) For lamp replacement, remove the clamp and
lamp hood from the top of the retainer. Remove the
wiring clip at the forward edge of the retainer and
remove the lamp socket from the hood and replace
lamp.
INSTALLATION
For installation reverse the above procedures.
When installing the retainer ensure that the forward
tabs are inserted properly into the slots in the instru-
ment panel.
CENTER BEZEL
REMOVAL
(1) Open the ash receiver receptacle.
(2) Grasp the bezel and pull rearward disengaging
the clips.
INSTALLATION
For installation, reverse the above procedures.
CIGAR LIGHTER RECEPTACLE
REMOVAL
(1) Remove the cigar lighter element.
(2) Reach underneath the instrument panel
through the bottom access hole and disconnect the
cigar lighter receptacle wiring connectors.
Fig. 12 Engine Coolant Temperature Sensor
8E - 6 INSTRUMENT PANEL AND SYSTEMSPL
DIAGNOSIS AND TESTING (Continued)

8W-02 COMPONENT INDEX
Component Page
A/C Compressor Clutch..................8W-42
A/C Compressor Clutch Relay.............8W-42
A/C Cycling Switch.....................8W-42
A/C Heater Blower Motor................8W-42
A/C Heater Control.....................8W-42
A/C Pressure Switches...................8W-42
ABS Warning Lamp Relay................8W-35
Airbag Control Module...................8W-43
Airbags..............................8W-43
Antenna..............................8W-47
Ash Receiver Lamp.....................8W-44
Automatic Shut Down Relay..............8W-30
Back-Up Lamp Switch...................8W-51
Back-Up Lamps........................8W-51
Battery..............................8W-20
Battery Temperature Sensor..............8W-30
Blower Motor Resistor Block..............8W-42
Brake Warning Lamp Switch...........8W-40, 50
Camshaft Position Sensor................8W-30
Center High Mounted Stop Lamp..........8W-51
Cigar Lighter Relay.....................8W-41
Cigar Lighter/Power Outlet...............8W-41
Circuit Breakers.......................8W-11
Clockspring.....................8W-30, 41, 61
Clutch Pedal Position Switch...........8W-10, 21
Combination Flasher....................8W-52
Controller Anti-Lock Brake...............8W-35
Crankshaft Position Sensor...............8W-30
Data Link Connector....................8W-30
Daytime Running Lamp Module...........8W-50
Diode No. 1........................8W-15, 42
Diode No. 2......................8W-10, 11, 44
Diode No. 3......................8W-11,44,70
Dome Lamp...........................8W-44
Door Ajar Switches.....................8W-44
Door Jamb Switches....................8W-44
Door Lock Motors......................8W-61
Door Lock Motors......................8W-61
Door Lock Switches.....................8W-61
Duty Cycle Evap/Purge Solenoid...........8W-30
EGR Transducer Solenoid................8W-30
Engine Coolant Temperature Sensor........8W-30
Engine Oil Pressure Switch...............8W-40
Engine Starter Motor....................8W-21
Engine Starter Motor Relay...............8W-21
Fog Lamp Relays....................8W-50, 51
Fog Lamp Switches..................8W-50, 51
Fog Lamps.........................8W-50, 51
Fuel Injectors..........................8W-30
Fuel Pump Module.....................8W-30
Fuel Pump Relay.......................8W-30
Fuse Block............................8W-11Component Page
Fuses (FB)............................8W-11
Fuses (PDC)...........................8W-10
Fusible Link........................8W-20, 21
Generator.............................8W-20
Glove Box Lamp And Switch..............8W-44
Grounds..............................8W-15
Halo Lamp............................8W-44
Headlamp Dimmer And Optical Horn Switch .8W-50
Headlamp Leveling Motors...............8W-50
Headlamp Leveling Switch...............8W-50
Headlamp Switch.......................8W-50
Headlamps............................8W-50
High Speed Warning Module..............8W-40
Horn Relay...........................8W-41
Horn Switches.........................8W-41
Horns................................8W-41
IAT/Map Sensor........................8W-30
Idle Air Control Motor...................8W-30
Ignition Coil Pack......................8W-30
Ignition Switch........................8W-10
Illumination Lamps.....................8W-40
Immobilizer...........................8W-61
Immobilizer Engine Sensor............8W-30, 61
Indicator Lamps........................8W-40
Instrument Cluster.....................8W-40
Intermittent Wipe/Wash Switch............8W-53
Key-In Switch.........................8W-40
Knock Sensor..........................8W-30
License Lamps.........................8W-51
Map/Reading Lamps....................8W-44
Noise Supressor.....................8W-10, 30
Oxygen Sensors........................8W-30
Park Brake Switch...................8W-40, 50
Park/Neutral Position Switch...........8W-30, 51
Park/Turn Signal Lamps..............8W-50, 52
Power Distribution Center................8W-10
Power Folding Mirror Relay...............8W-62
Power Mirror Fuse Holder................8W-62
Power Mirrors.........................8W-62
Power Steering Pressure Switch...........8W-30
Power Sunroof Motor....................8W-64
Power Window Motors...................8W-60
Power Window Switches.................8W-60
Powertrain Control Module...............8W-30
PRNDL Lamp.........................8W-44
Radiator Fan Motor.....................8W-42
Radio................................8W-47
Rear Window Defogger..................8W-48
Rear Window Defogger Switch.............8W-48
Remote Keyless Entry Module.............8W-61
Remote Keyless Entry Program
Module Connector....................8W-61
PL8W - 02 COMPONENT INDEX 8W - 02 - 1

8W-30 FUEL/IGNITION SYSTEMS
Component Page
A/C Compressor Clutch Relay...........8W-30-12
A/C High Pressure Switch..............8W-30-12
Airbag Control Module.................8W-30-4
Automatic Shut Down Relay...........8W-30-2, 3
Battery Temperature Sensor...........8W-30-3, 7
Camshaft Position Sensor............8W-30-7, 16
Center High Mounted Stop Lamp........8W-30-15
Clockspring.........................8W-30-14
Controller Anti-Lock Brake...........8W-30-4, 15
Crankshaft Position Sensor...........8W-30-7, 16
Data Link Connector.................8W-30-2, 4
Downstream Heated Oxygen Sensor.......8W-30-3
Duty Cycle Evap/Purge Solenoid.......8W-30-9, 10
EGR Transducer Solenoid............8W-30-9, 10
Engine Coolant Temperature Sensor.......8W-30-7
Engine Starter Motor Relay............8W-30-13
Fuel Injector No. 1....................8W-30-5
Fuel Injector No. 2....................8W-30-5
Fuel Injector No. 3....................8W-30-5
Fuel Injector No. 4....................8W-30-5
Fuel Pump Module...................8W-30-11
Fuel Pump Relay.....................8W-30-11
Fuse 10 (FB)...................8W-30-9, 10, 11
Fuse 21 (PDC).................8W-30-2, 3, 4, 11
Fuse 25 (PDC).......................8W-30-15
Fuse Block.....................8W-30-9, 10, 11
G101............................8W-30-3, 14
G102.......................8W-30-2, 4, 14, 15Component Page
G202..............................8W-30-14
G303..............................8W-30-11
Generator..........................8W-30-12
Iat/Map Sensor.......................8W-30-6
Idle Air Control Motor.................8W-30-8
Ignition Coil Pack.....................8W-30-5
Immobilizer.....................8W-30-3, 8, 16
Immobilizer Engine Sensor.............8W-30-16
Instrument Cluster............8W-30-7, 8, 11, 12
Knock Sensor........................8W-30-6
Noise Supressor......................8W-30-5
Park/Neutral Position Switch...........8W-30-13
Power Distribution Center.....8W-30-2, 3, 4, 11, 15
Power Steering Pressure Switch..........8W-30-4
Powertrain Control
Module..........8W-30-2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16
Solid State Fan Relay.................8W-30-12
Stop Lamp Switch.................8W-30-14, 15
Throttle Position Sensor................8W-30-6
Torque Converter Clutch Solenoid......8W-30-9, 10
Turn Signal/Hazard Switch.............8W-30-15
Upstream Heated Oxygen Sensor.........8W-30-3
Vapor Canister Leak Detector............8W-30-9
Vehicle Speed Control Servo.........8W-30-14, 15
Vehicle Speed Control Switch...........8W-30-14
Vehicle Speed Sensor................8W-30-8, 16
PL8W - 30 FUEL/IGNITION SYSTEMS 8W - 30 - 1

312
CRANKSHAFT
POSITION
SENSOR
8V
SUPPLYSENSOR
GROUND
K7
20
0R
1
32
8V
SUPPLY
SENSOR
GROUNDCAMSHAFT
POSITION
SENSOR
CAMSHAFT
POSITION
SENSOR
SIGNAL
S123
K24
20
GY/BKK4
20
BK/LB
K4
18
BK/LB
S118
K4
20
BK/LB
K4
20
BK/LB
C14352C1
AMBIENT
TEMPERATURE
SENSOR
SIGNAL SENSOR
GROUNDG31
18
VT/LG
C24
CLUSTER INSTRUMENT
G20
22
VT/YL
G20
VT/YL20
7C103
6C160
1
23
20
VT/YLG20
S120
C2
2632C2 C233
K44
20
TN/YL
SENSOR TEMPERATURE
COOLANT
ENGINE
CRANKSHAFT
POSITION
SENSOR
SIGNALCAMSHAFT
POSITION
SENSOR
SIGNALENGINE
COOLANT
TEMPERATURE
SENSOR
SIGNAL
K4
20
BK/LBK4
20
BK/RD
TN/BK20 K2TN/DB20 K2
CRANKSHAFT
POSITION
SENSOR
SIGNAL
MODULE CONTROL
POWERTRAIN
2
1
BK/LB20 K4
C16110
BK/LB20 K4
BK/LB18 K4
S110
BATTERY
TEMPERATURE
SENSOR
1.8L/2.0L
SOHC DOHC2.0L
1.8L/2.0L
SOHC2.0L
DOHC (8W-70-2)
(8W-70-3)(8W-40-6)
(8W-70-3)
(8W-70-3)
PL8W-30 FUEL/IGNITION SYSTEM 8W - 30 - 7
8254J988W-1

8W-40 INSTRUMENT CLUSTER
Component Page
ABS Warning Lamp..................8W-40-7,9
ABS Warning Lamp Relay............8W-40-7, 9
Airbag Control Module...............8W-40-8, 9
Airbag Warning Lamp................8W-40-8, 9
Brake Warning Lamp................8W-40-7, 9
Brake Warning Lamp Switch..........8W-40-7, 9
Charge Indicator Lamp...............8W-40-8, 9
Cluster Illumination Lamps.........8W-40-2, 3, 4
Daytime Running Lamp Module..........8W-40-2
Door Ajar...........................8W-40-7
Door Ajar Lamp......................8W-40-9
Driver Door Jamb Switch...............8W-40-5
Engine Coolant Temperature Sensor.......8W-40-6
Engine Oil Pressure Switch.............8W-40-6
Fuel Pump Module....................8W-40-6
Fuse 8 (FB).........................8W-40-12
Fuse 9 (FB)..........................8W-40-4
Fuse 11 (FB).........................8W-40-6
Fuse 12 (FB).......................8W-40-2, 3
Fuse 13 (PDC).....................8W-40-5, 12
Fuse Block..................8W-40-2, 3, 4, 6, 12
G101.............................8W-40-7, 9
G110.............................8W-40-7, 9
G111..............................8W-40-12
G204...............................8W-40-6
G302.............................8W-40-8, 9Component Page
Headlamp Dimmer And
Optical Horn Switch.............8W-40-2, 3, 4
Headlamp Switch...............8W-40-2, 3, 4, 5
High Beam Indicator Lamp..........8W-40-2, 3, 4
High Speed Warning Module..........8W-40-5, 12
Instrument Cluster..........8W-40-2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12
Key-In Switch........................8W-40-5
Left Front Side Marker Lamp...........8W-40-10
Left Park/Turn Signal Lamp.........8W-40-10, 11
Left Repeater Lamp..................8W-40-11
Left Turn Indicator Lamp...........8W-40-10, 11
Park Brake Switch..................8W-40-7, 9
Power Distribution Center.........8W-40-5, 7, 12
Powertrain Control Module.....8W-40-5, 6, 8, 9, 12
Right Front Side Marker Lamp.........8W-40-10
Right Park/Turn Signal Lamp........8W-40-10, 11
Right Repeater Lamp.................8W-40-11
Right Turn Indicator Lamp..........8W-40-10, 11
Seat Belt Switch....................8W-40-8, 9
Seat Belt Warning Lamp..............8W-40-8, 9
Time Out Relay.....................8W-40-7, 9
Turn Signal/Hazard Switch..........8W-40-10, 11
Vehicle Speed Sensor................8W-40-5, 12
PL8W - 40 INSTRUMENT CLUSTER 8W - 40 - 1

ST-RUN A21FUEL
LEVEL
SENSOR
SIGNAL
INSTRUMENT
CLUSTER
G5
20
DB/WT
G5
20
DB/WT
G5
20
DB/WT
G20
22
VT/YL
G20
20
VT/YL
G20
20
VT/YL
G4
20
DB
Z3
16
BK/OR
Z3
14
BK/OR
G6
22
GY
G6
20
GY
G6
18
GY
S201
SWITCH PRESSURE
OIL
ENGINE
S219BLOCK FUSE
G4
20
DB
G204
8C161
4C103
1C28C1
5C230
3C160
23
10C25C1
1
11
31
POWERTRAIN
CONTROL
MODULE
FUEL
PUMP
MODULESENSOR TEMPERATURE
COOLANT
ENGINE
3G4
18
DB
C1609
C10311
BK/PK20 G3
BK/PK22 G3
BK/PK20 G3
MODULE CONTROL
POWERTRAIN
8
3C2
CHECK
ENGINE
LAMP
DRIVER
3
6
C160
7C103
4C2
RKEOTHER
5A FUSE
11
SENSOR
SIGNAL
ENGINE
COOLANT
TEMPERATURE
GAUGE LAMP ENGINE
CHECK
FUEL
GAUGE
LAMP PRESSURE
OIL
LOW FUEL
LEVEL
SENSOR
SIGNAL
C2
C2
C1056
DB20 G4
(8W-10-9)
(8W-11-15)
(8W-11-16)
(8W-30-12)(8W-30-7)
(8W-30-11)(8W-30-11)
(8W-15-10)
(8W-15-11)(8W-11-2)
(8W-11-3)
(8W-11-4)
(8W-11-15)
(8W-15-10)
(8W-15-11)
8W - 40 - 6 8W-40 INSTRUMENT CLUSTERPL
J988W-18274