1999 DODGE NEON heater

DIAGNOSIS AND TESTING
AIRBAG SYSTEM TEST
(1) Disconnect and isolate the negative battery
cable.
(2) Connect scan tool (DRB) to Data Link connec-
tor, located at right side of the steering column and
at the lower edge of the lower instrument panel.
(3) Turn the ignition key to ON position. Exit vehi-
cle with scan tool. Use the latest version of the
proper cartridge.
(4) After checking that no one is inside the vehicle,
connect the battery negative terminal.
(5) Using the scan tool, read and record active
diagnostic code data.
(6) Read and record any stored diagnostic codes.
(7) Refer to the Passive Restraint Diagnostic Test
Manual if any diagnostic codes are found in Step 5 or
Step 6.
(8) Erase stored diagnostic codes if there are no
active diagnostic codes. If problems remain, diagnos-
tic codes will not erase. Refer to the Passive
Restraint Diagnostic Test Manual to diagnose the
problem.If the airbag warning lamp either fails
to light with the ignition switch on, or the light
goes on and stays on, there is a system malfunc-
tion. Refer to the Passive Restraint Diagnostic
Test Manual to diagnose the problem.
SERVICE PROCEDURES
CLEANUP PROCEDURE
Roll or fold the passenger airbag towards the
instrument panel surface and close the door over the
folded bag. Then tape the door shut.
Use a vacuum cleaner to remove any residual pow-
der from the vehicle interior. Work from the outside
in to avoid kneeling or sitting in a contaminated
area. Vacuum the heater and A/C outlets as well (Fig.
4). If the heater or air conditioner was in RECIRC
mode at time of airbag deployment, operate blower
motor on low speed and vacuum powder residue
expelled from the heater and A/C outlets. Multiple
vacuum cleaning may to necessary to decontaminate
the interior of the vehicle.
NOTE: Dispose deployed airbag properly, contact
dealer or government agency for disposal recom-
mendations.
SERVICE OF DEPLOYED AIRBAG MODULE
DRIVER AIRBAG
After a Driver Airbag Module has been deployed
the following components must be replaced becausethey cannot be reused. Other driver airbag system
components are replaced if damaged.
²Driver Airbag Module
²Clockspring assembly
PASSENGER AIRBAG
After a Passenger Airbag Module has been
deployed the following components must be replaced
because they cannot be reused.
²Passenger Airbag Module
²Right trim panel
The lower instrument panel knee blocker, top
cover, and any other components should be replaced
if damaged.
HANDLING AIRBAG MODULE
DEPLOYED MODULE
The vehicle interior may contain a very small
amount of sodium hydroxide powder, a by-product of
airbag deployment. Sodium hydroxide powder can
irritate the skin, eyes, nose and throat. Wear safety
glasses, rubber gloves, and long sleeved clothing
when cleaning any of the powder residue from the
vehicle.
If you find that the cleanup is irritating your skin,
run cool water over the affected area. Also, if you
experience nasal or throat irritation, exit the vehicle
for fresh air until the irritation ceases. If irritation
continues, see a physician.
UNDEPLOYED
The airbag module(s) must be stored in its original
special container until used for service. At no time
should a source of electricity be permitted near the
inflator on the back of an airbag module. When car-
rying or handling an undeployed airbag module, the
trim side of the airbag should be pointing away from
the body to minimize possibility of injury if acciden-
Fig. 4 Vacuum Heater and A/C Outlets
PLRESTRAINT SYSTEM 8M - 3

transmitter vehicle access codes into the memory of
the immobilizer receiver. Refer to the Vehicle Theft
Security System menu item on the DRB scan tool for
the procedures.
The immobilizer receiver recognizes the Lock and
Unlock signals received from the programmed immo-
bilizer transmitters. If the code sent by the key fob
transmitter is recognized as valid by the Immobilizer
module, it will decode the Crankshaft Position Sensor
signal, enable the starter circuit, and allow the
engine to run.
The immobilizer receiver is mounted to the dash
panel with a hook and loop fastener patch. It is
located behind the instrument cluster and above the
heater-A/C housing. The receiver is connected to the
dash panel cross-body wiring harness. (Fig. 1)
For diagnosis of the vehicle immobilizer receiver or
the CCD data bus, a DRB scan tool is required. Refer
to the Vehicle Theft Security System menu item of
the DRB scan tool for the procedures. The immobi-
lizer receiver contains no servicable parts. If faulty,
the unit must be replaced.
IMMOBILIZER TRANSMITTER
The vehicle immobilizer system includes two trans-
mitters that are supplied with the vehicle when it isshipped from the factory. Each of the two transmit-
ters is equipped with two buttons labeled with Inter-
national Standards Organization (ISO) symbols for
Lock, and Unlock. Two spare batteries (enough for
one transmitter) are also shipped with the transmit-
ters. The transmitters are equipped with a key ring
and are designed to serve as a key fob. The operating
range of the radio frequency transmitter signal is up
to 7 meters (23 feet) from the immobilizer receiver.
Each transmitter has a different vehicle access
code, which must be programmed into the memory of
the immobilizer receiver in the vehicle in order to
operate the immobilizer system. The two transmit-
ters shipped with the vehicle have their vehicle
access codes programmed into the receiver at the fac-
tory. A DRB scan tool must be used to program new
or additional transmitter vehicle access codes into
the memory of the immobilizer receiver. Refer to the
Vehicle Theft Security System menu item on the
DRB scan tool for the procedures.
Each transmitter operates on two Duracell DL2016
(or equivalent) batteries. Typical battery life is from
one to two years.
POWER-UP MODE
When the vehicle immobilizer system senses that
the vehicle battery has been disconnected and recon-
nected, it enters its power-up mode. If the immobi-
lizer system was armed prior to the battery
disconnect, the system remains armed when the bat-
tery is reconnected.
If the immobilizer system was disarmed prior to
the battery disconnect, the system will remain dis-
armed if the battery is reconnected within five min-
utes. The system will passively arm itself when the
battery is reconnected more than five minutes after a
battery disconnect or failure. After any passive arm-
ing, the system will have to be actively disarmed
using one of the transmitters.
The power-up mode logic also applies if the battery
goes dead, and battery jump-starting is attempted.
The engine no-run feature will prevent the engine
from operating until the vehicle immobilizer system
has been actively disarmed.
DIAGNOSIS AND TESTING
IMMOBILIZER DIAGNOSIS
Refer to the 1998 PL Powertrain Diagnostic Man-
ual for complete diagnostic procedures of the immo-
bilizer system.
Fig. 1 Immobilizer Module Location
8Q - 2 IMMOBILIZER SYSTEMPL
DESCRIPTION AND OPERATION (Continued)

SERVICE PROCEDURES
VEHICLE IMMOBILIZER SYSTEM
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: The following tests may not prove conclu-
sive in the diagnosis of this system. The most reli-
able, efficient, and accurate means to diagnose the
Vehicle Immobilizer System involves the use of a
DRB scan tool. Refer to the Vehicle Theft Security
System menu item on the DRB scan tool for the
procedures.
The vehicle immobilizer system and the Chrysler
Collision Detection (CCD) data bus network should
be diagnosed using the DRB scan tool. The DRB will
allow confirmation that the CCD data bus is func-
tional, that the immobilizer receiver is placing the
proper messages on the CCD data bus, and that the
Powertrain Control Module (PCM) is receiving the
CCD data bus messages. Refer to the Vehicle Theft
Security System menu item on the DRB scan tool for
the procedures. Refer to 8W-39 - Vehicle Theft Secu-
rity System in Group 8W - Wiring Diagrams for com-
plete circuit descriptions and diagrams.
(1) With the ignition switch in the Off position,
depress the Lock or Unlock button of the immobilizer
transmitter. Listen for the immobilizer receiver to
issue an audible chirp (Unlock) or chirps (Lock). If
OK, go to Step 2. If not OK, replace the transmitter
batteries with known good units and repeat Step 1. If
still not OK, go to Step 2.
(2) Check the fuse in the Power Distribution Cen-
ter (PDC). If OK, go to Step 3. If not OK, repair the
shorted circuit or component as required and replace
the faulty fuse.
(3) Disconnect and isolate the battery negative
cable. Unplug the wire harness connector at the
immobilizer receiver. Check for continuity between
the ground circuit cavity of the immobilizer receiver
wire harness connector and a good ground. There
should be continuity. If OK, go to Step 4. If not OK,
repair the open circuit to ground as required.
(4) Connect the battery negative cable. Check for
battery voltage at the fused B(+) circuit cavity of the
immobilizer receiver wire harness connector. If OK,
refer to the Vehicle Theft Security System menu itemon the DRB scan tool for further diagnosis. If not
OK, repair the open circuit to the PDC fuse as
required.REMOVAL AND INSTALLATION
IMMOBILIZER RECEIVER
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the Instrument Panel Top Cover and
Cluster Bezel and Right Trim panel. Remove the
receiver from the dash panel above the heater-A/C
housing (Fig. 2).
(3) Unplug the immobilizer receiver from the wire
harness connector.
(4) Reverse the removal procedures to install.
(5) Refer to the Vehicle Theft Security System
menu item on the DRB scan tool for the procedures
to program transmitter vehicle access codes into the
memory of the new immobilizer receiver.
Fig. 2 Immobilizer Receiver Remove/Install
PLIMMOBILIZER SYSTEM 8Q - 3

WIRING DIAGRAMS
CONTENTS
page page
AIR CONDITIONING-HEATER.......... 8W-42-1
AIRBAG SYSTEM................... 8W-43-1
ANTI-LOCK BRAKES................. 8W-35-1
AUDIO SYSTEMS................... 8W-47-1
CHARGING SYSTEM................. 8W-20-1
COMPONENT INDEX................. 8W-02-1
CONNECTOR/GROUND LOCATIONS..... 8W-90-1
CONNECTOR PIN-OUTS.............. 8W-80-1
FRONT LIGHTING................... 8W-50-1
FUEL/IGNITION SYSTEMS............ 8W-30-1
FUSE BLOCK....................... 8W-11-1
GENERAL INFORMATION............. 8W-01-1
GROUND DISTRIBUTION............. 8W-15-1
HORN/CIGAR LIGHTER............... 8W-41-1INSTRUMENT CLUSTER.............. 8W-40-1
INTERIOR LIGHTING................. 8W-44-1
POWER DISTRIBUTION.............. 8W-10-1
POWER DOOR LOCKS............... 8W-61-1
POWER MIRRORS.................. 8W-62-1
POWER SUNROOF.................. 8W-64-1
POWER WINDOWS.................. 8W-60-1
REAR LIGHTING.................... 8W-51-1
REAR WINDOW DEFOGGER........... 8W-48-1
SPLICE INFORMATION............... 8W-70-1
SPLICE LOCATIONS................. 8W-95-1
STARTING SYSTEM................. 8W-21-1
TURN SIGNALS..................... 8W-52-1
WIPERS........................... 8W-53-1
PLWIRING DIAGRAMS 8W - 1

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-11 FUSE BLOCK
Component Page
A/C Compressor Clutch Relay...........8W-11-14
A/C Cycling Switch................8W-11-12, 13
A/C Heater Blower Motor...........8W-11-12, 13
A/C Heater Control.............8W-11-17, 18, 19
ABS Warning Lamp Relay.............8W-11-14
Airbag Control Module..........8W-11-12, 13, 14
Ash Receiver Lamp.............8W-11-17, 18, 19
Back-Up Lamp Switch..............8W-11-12, 13
Cigar Lighter Relay.................8W-11-9, 20
Cigar Lighter/Power Outlet..........8W-11-7, 8, 9
Circuit Breaker.............8W-11-15, 16, 21, 22
Circuit Breaker (FB)..................8W-11-16
Controller Anti-Lock Brake.............8W-11-14
Daytime Running Lamp Module.........8W-11-15
Diode No.2.........................8W-11-23
Diode No.3.........................8W-11-23
Driver Door Lock Switch...............8W-11-11
Driver Power Window Switch........8W-11-15, 16
Duty Cycle Evap/Purge Solenoid.........8W-11-14
EGR Transducer Solenoid..............8W-11-14
Fog Lamp Switch..................8W-11-11,17
Front Fog Lamp Switch..............8W-11-8, 9
Fuel Pump Relay.....................8W-11-14
Fuse 1 (FB)......................8W-11-7, 8, 9
Fuse 2 (FB)......................8W-11-7, 8, 9
Fuse 3 (FB).........................8W-11-11
Fuse 4 (FB).........................8W-11-11
Fuse 5 (FB)......................8W-11-12, 13
Fuse 6 (FB)......................8W-11-12, 13
Fuse 7 (FB)......................8W-11-12, 13
Fuse 8 (FB)......................8W-11-12, 13
Fuse 9 (FB)....................8W-11-9, 14, 19
Fuse 10 (FB)........................8W-11-14
Fuse 11 (FB).....................8W-11-15, 16
Fuse 12 (FB)..............8W-11-7, 8, 14, 17, 18
Fuse 13 (PDC).......................8W-11-23
Fuse 14 (FB)........................8W-11-20
Fuse 15 (FB)........................8W-11-20
Fuse 16 (FB)........................8W-11-20
Fuse 17 (FB).....................8W-11-21, 22
Fuse 18 (FB).....................8W-11-21, 22
Fuse Block...........8W-11-2, 3, 4, 7, 8, 9, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
Halo Lamp.........................8W-11-23
Headlamp Dimmer And Optical
Horn Switch...................8W-11-21, 22Component Page
Headlamp Leveling Switch.......8W-11-18, 19, 22
Headlamp Switch . .8W-11-7, 8, 9, 17, 18, 19, 21, 22,
High Speed Warning Module.........8W-11-12, 13
Immobilizer......................8W-11-11,16
Instrument Cluster.....8W-11-15, 16, 17, 18, 19, 23
Intermittent Wipe/Wash Switch.........8W-11-20
Left Front Door Jamb Switch...........8W-11-23
Left Front Side Marker Lamp...........8W-11-10
Left Headlamp....................8W-11-21, 22
Left Headlamp Leveling Motor..........8W-11-22
Left License Lamp..................8W-11-8, 9
Left Park/Turn Signal Lamp............8W-11-10
Left Tail/Stop Lamp.................8W-11-8, 9
Left Tail/Stop/Turn Signal Lamp..........8W-11-7
License Lamp........................8W-11-7
Map/Reading Lamps..................8W-11-23
Park/Neutral Position Switch........8W-11-12, 13
Passenger Door Lock Switch............8W-11-11
Passenger Power Window Switch.....8W-11-15, 16
Power Distribution Center...........8W-11-14, 23
Power Mirror Fuse Holder.............8W-11-16
Powertrain Control Module.............8W-11-14
PRNDL Lamp.................8W-11-17, 18, 19
Radio...............8W-11-7, 8, 9, 17, 18, 19, 20
Rear Fog Lamp Switch..........8W-11-18, 19, 22
Rear Window Defogger
Switch...............8W-11-12, 13, 17, 18, 19
Remote Keyless Entry Module......8W-11-7, 11, 15
Right Front Side Marker Lamp..........8W-11-10
Right Headlamp..................8W-11-21, 22
Right Headlamp Leveling Motor.........8W-11-22
Right License Lamp.................8W-11-8, 9
Right Park/Turn Signal Lamp...........8W-11-10
Right Tail/Stop Lamp................8W-11-8, 9
Right Tail/Stop/Turn Signal Lamp........8W-11-7
Sunroof Slide Switch..................8W-11-20
Sunroof Vent Switch..................8W-11-20
Time Delay Relay....................8W-11-23
Time Out Relay......................8W-11-23
Torque Converter Clutch Solenoid........8W-11-14
Turn Signal/Hazard Switch..........8W-11-12, 13
Vapor Canister Leak Detector...........8W-11-14
Wipe/Wash Switch....................8W-11-20
Wiper Motor........................8W-11-20
PL8W - 11 FUSE BLOCK 8W - 11 - 1

5FUSE10A 10A
FUSE
6
25AFUSE
7
10AFUSE
8
25262728
BLOCK FUSE RUN A22
20
AIRBAG
CONTROL
MODULE
F25
18
TN/LG
5
SWITCH HAZARD
SIGNAL/
TURN
L5
20
BK
C1
14
DG
4C206
C1
14
DG
1
MOTOR BLOWER
HEATER
A/C
F20
20
WT
3C103
3
SWITCH POSITION
NEUTRAL
PARK/
B
BACK-UP
MTX ATXF20
22
WT
3
SWITCH DEFOGGER
WINDOW
REAR
F20
20
WT
2C206
F20
22
WT
2
A/C
CYCLING
SWITCH
F20
22
WT
S211
LAMP
SWITCH
5678
WT18 F20
F20
20
WT
WT18 F20
SWITCH LAMP
BACK-UP
B
EXCEPT
BUILT-UP-EXPORT BUILT-UP-EXPORTD2
(BUILT-UP-EXPORT) MODULE
WARNING
SPEED
HIGH
F20 20WT
(8W-43-2)
(8W-52-2)
(8W-52-3)(8W-42-3)
(8W-51-2)
(8W-51-3)(8W-48-2)
(8W-42-6) (8W-51-3) (8W-10-8)
(8W-11-2)
(8W-11-3)
(8W-51-2) (8W-40-12)
8W - 11 - 12 8W-11 FUSE/FUSE BLOCK
LHDPL
J988W-18218

3
SWITCH POSITION
NEUTRAL
PARK/
B
BACK-UP
MTX ATX
LAMP
SWITCH
WT18 F20
F20
20
WT
8FUSE10A 10A
FUSE
6
25AFUSE
7
10AFUSE
5
28262725
BLOCK FUSE RUN A22
20
AIRBAG
CONTROL
MODULE
F25
18
TN/LG
5
SWITCH HAZARD
SIGNAL/
TURN
L5
20
BK
C1
14
DG
4C206
C1
14
DG
1
MOTOR BLOWER
HEATER
A/C
F20
20
WT
3C103
F20
22
WT
3
SWITCH DEFOGGER
WINDOW
REAR
F20
20
WT
2C206
F20
22
WT
2
A/C
CYCLING
SWITCH
F20
22
WT
S211
867 5
D2
MODULE WARNING
SPEED
HIGH
F20
20
WT
(8W-51-3) (8W-51-3)(8W-43-3)
(8W-52-3) (8W-42-4)
(8W-48-3)(8W-42-6) (8W-10-8)
(8W-11-4)
(8W-40-12)
PL8W-11 FUSE/FUSE BLOCK
RHD8W - 11 - 13
8219J988W-1