brakes DODGE NEON 2000 Service Repair Manual

On most vehicles another resistor has been added
to the at rest circuit causing the PCM to never see 5
volts. This was done for diagnostic purposes. If the
switch circuit should open (bad connection) then the
PCM will see the 5 volts and know the circuit is bad.
The PCM will then set an open circuit fault.
STOP LAMP SWITCH
DESCRIPTION
The switch is mounted on the brake pedal mount-
ing bracket under the instrument panel.
OPERATION
Vehicles equipped with the speed control option use
a dual function stop lamp switch. The PCM monitors
the state of the dual function stop lamp switch. Refer
to the Brake section for more information on stop
lamp switch service and adjustment procedures.
The brake switch is equipped with three sets of
contacts, one normally open and the other two nor-
mally closed (brakes disengaged). The PCM sends a
12 volt signal to one of the normally closed contacts
in the brake switch, which is connected to a ground.
With the contacts closed, the 12 volt signal is pulled
to ground causing the signal to go low. The low volt-
age signal, monitored by the PCM, indicates that the
brakes are not applied. When the brakes are applied,
the contacts open, causing the PCM's output voltage
to go high, disengaging the speed control also
grounding the dump solenoid.
The second set of normally closed contacts is sup-
plied battery voltage any time speed control is
selected. From the brake switch, current is routed to
the speed control servo solenoids. The speed control
solenoids (vacuum, vent and dump) are provided this
current any time the speed control is ON and the
brakes are disengaged. When the driver applies the
brakes, the contacts open and current is interrupted
to the solenoids. The normally open contacts are fed
battery voltage. When the brakes are applied, battery
voltage is supplied to the stop lamps.
SERVO CABLE
DESCRIPTION
The speed control servo cable is connected between
the speed control vacuum servo diaphragm and the
throttle body control linkage.
OPERATION
This cable causes the throttle control linkage to
open or close the throttle valve in response to move-
ment of the vacuum servo diaphragm.
VACUUM RESERVOIR
OPERATION
The reservoir stores engine vacuum in the reser-
voir. When engine vacuum drops, as in climbing a
grade while driving, the reservoir supplies the vac-
uum needed to maintain proper speed control opera-
tion. The vacuum reservoir cannot be repaired and
must be replaced if faulty.
VEHICLE SPEED SENSOR
The Vehicle Speed Sensor (VSS) is a pulse genera-
tor mounted to an adapter near the transmission out-
put shaft. The sensor is driven through the adapter
by a speedometer pinion gear. The VSS pulse signal
to the speedometer/odometer is monitored by the
PCM speed control circuitry to determine vehicle
speed and to maintain speed control set speed.
REMOVAL AND INSTALLATION
SPEED CONTROL SERVO
REMOVAL
(1) Disconnect electrical connector from servo (Fig.
2).
(2) Disconnect vacuum hose from servo
(3) Remove 2 nuts retaining cable to servo.
(4) Remove retaining clip pin holding cable to
servo.
Fig. 2 Speed Control Servo
PLVEHICLE SPEED CONTROL SYSTEM 8H - 3
DESCRIPTION AND OPERATION (Continued)

WIRING DIAGRAMS
TABLE OF CONTENTS
page page
AIR CONDITIONING-HEATER........... 8W-42-1
AIRBAG SYSTEM.................... 8W-43-1
ANTI-LOCK BRAKES.................. 8W-35-1
AUDIO SYSTEM..................... 8W-47-1
CHARGING SYSTEM.................. 8W-20-1
COMPONENT INDEX.................. 8W-02-1
CONNECTOR PIN-OUTS............... 8W-80-1
CONNECTOR/GROUND LOCATIONS...... 8W-90-1
FRONT LIGHTING.................... 8W-50-1
FUEL/IGNITION SYSTEM.............. 8W-30-1
FUSE BLOCK........................ 8W-11-1
GENERAL INFORMATION.............. 8W-01-1
GROUND DISTRIBUTION.............. 8W-15-1
HORN/CIGAR LIGHTER/POWER OUTLET . . 8W-41-1
INSTRUMENT CLUSTER............... 8W-40-1INTERIOR 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
VEHICLE THEFT SECURITY SYSTEM..... 8W-39-1
WIPERS............................ 8W-53-1
PLWIRING DIAGRAMS 8W - 1

POWER
DISTRIBUTION
CENTER
C13
WT/TN20 L50 WT/TN20 L50
BATT A0
1
BRAKE
LAMP
SWITCH
C10413WT/TN20 L50
WT/TN20 L50
PK/DB18 F3265
23FUSE15A
23
LAMP STOP
MOUNTED
HIGH
CENTER
L50
18
WT/TN
S308
L50
18
WT/TN
33
LAMP STOP
TAIL/
LEFT RIGHT
TAIL/
STOP
LAMP
L50
20
WT/TN
18
CONTROLLER
ANTI-LOCK
BRAKE
L50
18
WT/TN
C305A9
C3021
L50
20
WT/TN
A
(8W-10-19)TO
SWITCH FUNCTIONMULTI-
L50
20
WT/TN
9 BUILT-UP-
EXPORT EXPORTBUILT-UP-EXCEPT
9 A9
C305
1C302S227 S108
ANTI-LOCK
BRAKESOTHER
L50
20
WT/TN
L50
20
WT/TN
L50
20
WT/TNL50
20
WT/TN
L50
20
WT/TN
L50
20
WT/TN
(8W-10-2)
(8W-10-3)
(8W-30-13) (8W-10-7)
(8W-51-3)
(8W-51-6) (8W-51-6) (8W-51-6)(8W-35-2)
8W - 10 - 18 8W-10 POWER DISTRIBUTIONPL
008W-10PLI01018

62
MODULE CONTROL
POWERTRAINLAMP
SWITCH
SENSE
23FUSE15A
23
BATT A0
2
16
5
K29
20
WT/PKF32
18
PK/DB
SWITCH LAMP
BRAKECENTER DISTRIBUTION
POWER
Z12
20
BK/TN
Z12
18
BK/TN
G102
S107
WT/TN20 L50
C2
18
CONTROLLER
ANTI-LOCK
BRAKE
L50
18
WT/TN
4
3
BRAKE
LAMP
SWITCH
OUTPUT
FUSE
BLOCK
RUN A22
10A
FUSE
7
F20
20
WT
S216
F20
20
WT
2
1
SOLENOID INTERLOCK
SHIFT
BRAKE
K29
20
WT/PK
15C103
V30
20
DB/RD
3
SERVO CONTROL
SPEED
VEHICLE
K29 20WT/PK
C15
6FUSE10A
27 26
RHD LHDV32
20
YL/RD
V32
20
YL/RD
C1025
71C2
A
SWITCH INDICATOR
WARNING
BRAKE
SPEED
CONTROL
POWER
SUPPLYRED
BRAKE
WARNING
INDICATOR
DRIVER
DRIVER INDICATORWARNINGBRAKERED
SPEED
CONTROL
BRAKE
SWITCH
OUTPUTG9
18
GY/BKBRAKE
S108
LAMP 76
OTHERANTI-LOCK
BRAKES
L50
18
WT/TN
A
(8W-30-14)
TO
C104
(8W-10-18)(8W-10-7)
(8W-10-2)
(8W-10-3)
(8W-15-4)
(8W-35-2)
(8W-15-4)(8W-11-2)
(8W-11-3) (8W-10-9)
(8W-11-7)
(8W-11-7)
(8W-11-8)
(8W-33-3) (8W-11-8)
(8W-40-5)
(8W-10-18)
PL8W-30 FUEL/IGNITION SYSTEM 8W - 30 - 13
PLI03013008W-10

8W-35 ANTI-LOCK BRAKES
Component Page
Brake Lamp Switch..................8W-35-2
Controller Anti-Lock Brake.........8W-35-2, 3, 4
Data Link Connector.................8W-35-2
Fuse 5 (PDC).......................8W-35-2
Fuse 8 (PDC).......................8W-35-2
Fuse 10 (FB)........................8W-35-3
Fuse 11 (FB)........................8W-35-3
Fuse 23 (PDC)......................8W-35-2
Fuse Block.........................8W-35-3Component Page
G103..............................8W-35-2
G204..............................8W-35-3
Instrument Cluster...................8W-35-3
Left Front Wheel Speed Sensor.........8W-35-4
Left Rear Wheel Speed Sensor..........8W-35-4
Power Distribution Center.............8W-35-2
Right Front Wheel Speed Sensor........8W-35-4
Right Rear Wheel Speed Sensor.........8W-35-4
Traction Control Switch...............8W-35-3
PL8W - 35 ANTI-LOCK BRAKES 8W - 35 - 1

POWER
DISTRIBUTION
CENTER
530A
FUSE
5
9
CONTROLLER
ANTI-LOCK
BRAKE
BATT A0
10
2315A
FUSE
23
824
Z1
12
BK BK12Z1
Z1
12
BK
G103 S119
6
5
L50
20
WT/TN
18
L50
18
WT/TN
S108
F32
18
PK/DB
BRAKE
LAMP
SWITCH
OUTPUT
GROUND GROUND FUSED
B(+) B(+)FUSED
25
RD/DG12 A10 840A
FUSE
8
BRAKE
LAMP
SWITCH
PCI
BUS
A20
12
RD/DB
2
D25
18
VT/YL
D25
20
VT/YL
S104
CONNECTORLINK DATA
(8W-10-2)
(8W-10-3)
(8W-10-11)(8W-10-7)
(8W-10-18)
(8W-15-7) (8W-15-5) (8W-10-18) (8W-10-11)
(8W-30-13)
(8W-30-4)
(8W-30-4)
8W - 35 - 2 8W-35 ANTI-LOCK BRAKESPL
008W-10PLI03502

LHD RHD31 30
15A
FUSE
1110FUSE15A
BLOCK
FUSE10 11
ST-RUN A21 ST-RUN A21
4
CONTROLLER
ANTI-LOCK
BRAKE
152 4
3
12
CLUSTER INSTRUMENT
SWITCH CONTROL
TRACTION
C103
C10411 C11
S109S206
S202
B1
1 F12
18
DB/WT
F12
18
DB/WT
F12
18
DB/WT
E2
22
OR
E2
22
OR
B27
18
RD/YL
B27
20
RD/YLZ1
20
BK
Z1
16
BK
G204
TRACTION
CONTROL
SWITCH
SENSE FUSED
IGNITION
SWITCH
OUTPUT
(ST-RUN)PANEL
LAMPS
DRIVER
SENSE SWITCH CONTROL TRACTION
GROUND DRIVERLAMPSPANEL
(8W-11-12) (8W-11-11)(8W-11-2)
(8W-11-3) (8W-10-10) (8W-10-10)
(8W-40-9)
(8W-11-11)
(8W-11-12)(8W-44-5)
(8W-15-11)
(8W-15-11)
PL8W-35 ANTI-LOCK BRAKES 8W - 35 - 3
PLI03503008W-10

SENSOR SPEED
WHEEL
FRONT
LEFT
LEFT
REAR
WHEEL
SPEED
SENSORRIGHT
FRONT
WHEEL
SPEED
SENSOR
RIGHT
REAR
WHEEL
SPEED
SENSOR
LEFT
FRONT
WHEEL
SPEED
SENSOR
(-)12-VOLT
SUPPLY
(-) SENSORSPEED WHEELREARLEFT RIGHT
FRONT
WHEEL
SPEED
SENSOR
(-) (-)SENSORSPEED WHEELREAR RIGHT
125619202322 B8
18
RD/DB
B9
18
RDB6
18
WT/DBB7
18
WT
B2
20
YL B1
20
YL/DB B3
20
LG/DBB4
20
LG
12
12
12
12
CONTROLLER
ANTI-LOCK
BRAKE
PAIR TWISTED
TWISTED
PAIR
TWISTED
PAIR
PAIR TWISTED
2C10613C1064
B3
18
LG/DBB4
18
LGB1
18
YL/DBB2
18
YL
TWISTED
PAIR
PAIR TWISTED
12-VOLT
SUPPLY12-VOLT
SUPPLY SUPPLY12-VOLT
8W - 35 - 4 8W-35 ANTI-LOCK BRAKESPL
008W-10PLI03504

23
15A
FUSE
23
5
6
POWER
DISTRIBUTION
CENTER
F32
18
PK/DB
L50
20
WT/TN
L50
20
WT/TN
13
C104
SWITCH LAMP
BRAKE
21
CENTER
HIGH
MOUNTED
STOP
LAMP
Z1
20
BK
Z1
18
BK
Z1
16
BK
G301 BATT A0
S311
L50
20
WT/TN
L50
20
WT/TN
C13
9 A9C305
C3021
OTHERS RELEASE
BK20Z1 ELECTRIC
L50
20
WT/TN
Z1
18
BK
22C302
G304
Z1
18
BK
S312
G304
Z1
18
BK
C302S108
S227
ANTI-LOCK
BRAKESOTHER
(8W-15-12) (8W-10-7)
(8W-15-12)(8W-30-13)
(8W-10-2)
(8W-10-3)
(8W-10-18)
(8W-15-12)(8W-15-12)
(8W-15-12) (8W-10-18)
(8W-10-18)
PL8W-51 REAR LIGHTING
EXCEPT BUILT-UP-EXPORT8W - 51 - 3
PLI05103008W-10

23FUSE15A
23
BATT A0
CENTER
DISTRIBUTION
POWER
5 6
F32
18
PK/DB
BRAKE
LAMP
SWITCH
L50
20
WT/TN
S108
13C104
A
(8W-51-6)TO
S308
BATT A3
35
15A
FUSE
15
FUSE
BLOCK
15
F33
20
PK/RD
L7
20
BK/YL
L7
20
BK/YL 4
C305
BK/YL20 L7
L50
20
WT/TN
C13
L50
20
WT/TN
C305A9
9
L50
20
WT/TN
S213
S306
TO
B
(8W-51-6)
C1057
BK/YL18L7
L7
20
BK/YL
TO
S118
A4
MULTI-
FUNCTION
SWITCH
20
9
HEADLAMP
SWITCH
3
2 1 0
3 REAR FOG 2 HEAD
1 PARK
0 OFF
ANTI-LOCK
BRAKESOTHER(8W-10-18)(8W-10-2)
(8W-10-3)
(8W-30-13)
(8W-10-18)(8W-11-14)(8W-11-2)
(8W-11-3) (8W-10-7) (8W-10-9)
(8W-11-14)
(8W-11-15)
PL8W-51 REAR LIGHTING
BUILT-UP-EXPORT8W - 51 - 5
PLI05105008W-10