1999 DODGE NEON oil temperature

ply circuit shorts to ground, neither sensor will pro-
duce a signal (output voltage to the PCM).
When the ignition key is turned and left in the On
position, the PCM automatically energizes the Auto
Shutdown (ASD) relay. However, the controller de-en-
ergizes the relay within one second because it has
not received a camshaft position sensor signal indi-
cating engine rotation.
During cranking, the ASD relay will not energize
until the PCM receives a camshaft position sensor
signal. Secondly, the ASD relay remains energized
only if the controller senses a crankshaft position
sensor signal immediately after detecting the cam-
shaft position sensor signal.
(1) Check battery voltage. Voltage should approxi-
mately 12.66 volts or higher to perform failure to
start test.
(2) Disconnect the harness connector from the coil
pack (Fig. 20).
(3) Connect a test light to the B+ (battery voltage)
terminal of the coil electrical connector and ground.
The B+ wire for the DIS coil is the center terminal.
Do not spread the terminal with the test light
probe.
(4) Turn the ignition key to theON position.The
test light should flash On and then Off.Do not turn
the Key to off position, leave it in the On posi-
tion.
(a) If the test light flashes momentarily, the
PCM grounded the ASD relay. Proceed to step 5.
(b) If the test light did not flash, the ASD relay
did not energize. The cause is either the relay or
one of the relay circuits. Use the DRB scan tool to
test the ASD relay and circuits. Refer to the appro-
priate Powertrain Diagnostics Procedure Manual.
Refer to the wiring diagrams section for circuit
information.
(5) Crank the engine. (If the key was placed in the
off position after step 4, place the key in the On posi-tion before cranking. Wait for the test light to flash
once, then crank the engine.)
(6) If the test light momentarily flashes during
cranking, the PCM is not receiving a crankshaft posi-
tion sensor signal.
(7) If the test light did not flash during cranking,
unplug the crankshaft position sensor connector.
Turn the ignition key to the off position. Turn the
key to the On position, wait for the test light to
momentarily flash once, then crank the engine. If the
test light momentarily flashes, the crankshaft posi-
tion sensor is shorted and must be replaced. If the
light did not flash, the cause of the no-start is in
either the crankshaft position sensor/camshaft posi-
tion sensor 8 volt supply circuit, or the camshaft
position sensor output or ground circuits.
IGNITION TIMING PROCEDURE
The engines for this vehicle, use a fixed ignition
system. The PCM regulates ignition timing. Basic
ignition timing is not adjustable.
CAMSHAFT POSITION SENSOR AND CRANKSHAFT
POSITION SENSOR
The output voltage of a properly operating cam-
shaft position sensor or crankshaft position sensor
switches from high (5.0 volts) to low (0.3 volts). By
connecting an Moper Diagonostic System (MDS) and
engine analyzer to the vehicle, technicians can view
the square wave pattern.
ENGINE COOLANT TEMPERATURE SENSOR
Refer to Group 14, Fuel System for Diagnosis and
Testing.
INTAKE AIR TEMPERATURE SENSOR
Refer to Group 14, Fuel System, for Diagnosis and
Testing.
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
TEST
Refer to Group 14, Fuel System for Diagnosis and
Testing.
THROTTLE POSITION SENSOR
To perform a complete test of the this sensor and
its circuitry, refer to the DRB scan tool and appropri-
ate Powertrain Diagnostics Procedures manual. To
test the throttle position sensor only, refer to the fol-
lowing:
The Throttle Position Sensor (TPS) can be tested
with a digital voltmeter (DVM). The center terminal
of the sensor is the output terminal. One of the other
terminals is a 5 volt supply and the remaining ter-
minal is ground.
Fig. 20 Ignition Coil Engine Harness Connector
PLIGNITION SYSTEM 8D - 9
DIAGNOSIS AND TESTING (Continued)

Connect the DVM between the center and sensor
ground terminal. Refer to Group 8W - Wiring Dia-
grams for correct pinout.
With the ignition switch in the ON position, check
the output voltage at the center terminal wire of the
connector. Check the output voltage at idle and at
Wide-Open-Throttle (WOT). At idle, TPS output volt-
age should be approximately 0.38 volts to 1.2 volts.
At wide open throttle, TPS output voltage should be
approximately 3.1 volts to 4.4 volts. The output volt-
age should gradually increase as the throttle plate
moves slowly from idle to WOT.
Check for spread terminals at the sensor and PCM
connections before replacing the TPS.
SPARK PLUG CONDITION
NORMAL OPERATING CONDITIONS
The few deposits present will be probably light tan
or slightly gray in color with most grades of commer-
cial gasoline (Fig. 21). There will not be evidence of
electrode burning. Gap growth will not average more
than approximately 0.025 mm (.001 in) per 1600 km
(1000 miles) of operation for non platinum spark
plugs. Non-platnium spark plugs that have normal
wear can usually be cleaned, have the electrodes filed
and regapped, and then reinstalled.
CAUTION: Never attempt to file the electrodes or
use a wire brush for cleaning platinum spark plugs.
This would damage the platinum pads which would
shorten spark plug life.Some fuel refiners in several areas of the United
States have introduced a manganese additive (MMT)
for unleaded fuel. During combustion, fuel with MMT
may coat the entire tip of the spark plug with a rust
colored deposit. The rust color deposits can be misdi-
agnosed as being caused by coolant in the combustion
chamber. Spark plug performance is not affected by
MMT deposits.
COLD FOULING (CARBON FOULING)
Cold fouling is sometimes referred to as carbon
fouling because the deposits that cause cold fouling
are basically carbon (Fig. 21). A dry, black deposit on
one or two plugs in a set may be caused by sticking
valves or misfire conditions. Cold (carbon) fouling of
the entire set may be caused by a clogged air cleaner.
Cold fouling is normal after short operating peri-
ods. The spark plugs do not reach a high enough
operating temperature during short operating peri-
ods.Replace carbon fouled plugs with new
spark plugs.
FUEL FOULING
A spark plug that is coated with excessive wet fuel
is called fuel fouled. This condition is normally
observed during hard start periods.Clean fuel
fouled spark plugs with compressed air and
reinstall them in the engine.
OIL FOULING
A spark plug that is coated with excessive wet oil
is oil fouled. In older engines, wet fouling can be
caused by worn rings or excessive cylinder wear.
Break-in fouling of new engines may occur before
normal oil control is achieved.Replace oil fouled
spark plugs with new ones.
OIL OR ASH ENCRUSTED
If one or more plugs are oil or ash encrusted, eval-
uate the engine for the cause of oil entering the com-
bustion chambers (Fig. 22). Sometimes fuel additives
can cause ash encrustation on an entire set of spark
plugs.Ash encrusted spark plugs can be cleaned
and reused.
HIGH SPEED MISS
When replacing spark plugs because of a high
speed miss condition;wide open throttle opera-
tion should be avoided for approximately 80 km
(50 miles) after installation of new plugs.This
will allow deposit shifting in the combustion chamber
to take place gradually and avoid plug destroying
splash fouling shortly after the plug change.
Fig. 21 Normal Operation and Cold (Carbon) Fouling
8D - 10 IGNITION SYSTEMPL
DIAGNOSIS AND TESTING (Continued)

ELECTRODE GAP BRIDGING
Loose deposits in the combustion chamber can
cause electrode gap bridging. The deposits accumu-
late on the spark plugs during continuous stop-
and-go driving. When the engine is suddenly
subjected to a high torque load, the deposits partially
liquefy and bridge the gap between the electrodes
(Fig. 23). This short circuits the electrodes.Spark
plugs with electrode gap bridging can be
cleaned and reused.
SCAVENGER DEPOSITS
Fuel scavenger deposits may be either white or yel-
low (Fig. 24). They may appear to be harmful, but
are a normal condition caused by chemical additives
in certain fuels. These additives are designed tochange the chemical nature of deposits and decrease
spark plug misfire tendencies. Notice that accumula-
tion on the ground electrode and shell area may be
heavy but the deposits are easily removed.Spark
plugs with scavenger deposits can be consid-
ered normal in condition, cleaned and reused.
CHIPPED ELECTRODE INSULATOR
A chipped electrode insulator usually results from
bending the center electrode while adjusting the
spark plug electrode gap. Under certain conditions,
severe detonation also can separate the insulator
from the center electrode (Fig. 25).Spark plugs
with chipped electrode insulators must be
replaced.
PREIGNITION DAMAGE
Excessive combustion chamber temperature can
cause preignition damage. First, the center electrode
dissolves and the ground electrode dissolves some-
what later (Fig. 26). Insulators appear relatively
deposit free. Determine if the spark plugs are the
correct type, as specified on the VECI label, or if
Fig. 22 Oil or Ash Encrusted
Fig. 23 Electrode Gap Bridging
Fig. 24 Scavenger Deposits
Fig. 25 Chipped Electrode Insulator
PLIGNITION SYSTEM 8D - 11
DIAGNOSIS AND TESTING (Continued)

(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)

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

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