1999 DODGE NEON Service Repair Manual

(c) If continuity is OK between cavity 62 and
cavity 1, repair open circuit between cavity 2 of the
stop lamp switch connector and ground.
(6) Using an ohmmeter, check continuity from cav-
ity 76 on PCM connector to ground with the trans-
mission in park or neutral. If no continuity, test TRS/
Park-Neutral switch and switch wiring
(7) Turn speed control and ignition switch OFF.
(8) Unplug the BLACK 40-way connector from the
Powertrain Control Module (PCM)
(9) Using an ohmmeter, check continuity from cav-
ity 3 of servo connector to cavity 5 on the PCM con-
nector.
(a) If continuity is OK, replace PCM. Check cir-
cuit for short to ground before replacing PCM.
(b) If no continuity, remove stop lamp switch
and conduct Stop Lamp Switch Test. If test fails,
adjust or replace as necessary.
(c) If switch passes, measure continuity from
cavity 4 of stop lamp switch connector to cavity 3
of servo connector. Repair open circuit if necessary.
(d) If continuity is OK, measure continuity from
cavity 3 of stop lamp switch to cavity 5 of PCM
connector. Repair open circuit as necessary.
(e) Install PCM connectors onto PCM and speed
control servo connector to servo.
VACUUM SUPPLY TEST
(1) Disconnect vacuum hose at the servo and
install a vacuum gauge in the hose (Fig. 9).
(2) Start engine and observe gauge at idle. Vac-
uum gauge should read at least ten inches of mer-
cury. Shut off engine, the vacuum should continue to
hold 10 inches of mercury.
(3) If vacuum does not meet this requirement,
check and correct the following vacuum leaks in the
vacuum lines, check valve, vacuum reservoir or poor
engine performance.
VEHICLE SPEED SENSOR
For diagnosis and testing of the Vehicle Speed Sen-
sor (VSS), refer to the appropriate Powertrain Diag-
nostic Procedures service manual. Also refer to the
DRB scan tool.
REMOVAL AND INSTALLATION
SPEED CONTROL SERVO
REMOVAL
(1) Disconnect electrical connector from servo.
(2) Disconnect vacuum hoses from servo
(3) Remove 2 nuts retaining cable to servo.
(4) Remove hair pin holding cable to servo.
INSTALLATION
(1) Install hairpin to cable at servo.
(2) Install 2 nuts at cable to servo and servo
bracket, tighten to 7 N´m (60 ins. lbs.).
(3) Connect electrical connector to servo.
(4) Connect vacuum hose to servo
SPEED CONTROL SWITCH
The speed control switches are mounted in the
steering wheel and wired through the clock spring
device under the airbag module (Fig. 1).
WARNING: IF REMOVAL OF AIRBAG MODULE IS
NECESSARY, REFER TO GROUP 8M, RESTRAINT
SYSTEMS.
REMOVAL
(1) Turn off ignition.
(2) Remove two screws from side of each switch.
(3) Rock switch away from airbag and steering
wheel.
(4) Disconnect two-way electrical connector.
(5) Repeat for the other switch.
INSTALLATION
For installation reverse above procedures.
STOP LAMP SWITCH
REMOVAL
Remove the switch from the bracket by depressing
the brake pedal and rotating the switch in a counter-
clockwise direction approximately 30 degrees. Pull
the switch rearward and remove from bracket. Dis-
connect wiring harness connector.
INSTALLATION
Before installing the switch, reset the adjustable
switch plunger by pulling on the plunger head until
Fig. 9 Vacuum Gauge TestÐTypical
8H - 8 VEHICLE SPEED CONTROL SYSTEMPL
DIAGNOSIS AND TESTING (Continued)

the plunger reaches the end of its travel. A ratchet-
ing sound will be heard during this procedure.
Connect the wiring harness to the switch. Mount
the switch into the bracket by holding the switch
with the plunger facing forward in car. There is an
index key on the switch that mates with the bracket
slot at the top of the square hole. Align key and push
switch into square hole in bracket while depressing
the brake pedal. Once the switch is seated in the
hole, rotate clockwise approximately 30 degrees to
lock into place. The switch will automatically adjust
when the pedal is released. Pull back on the pedal to
assure correct adjustment.
SPEED CONTROL SERVO CABLE
REMOVAL
(1) Remove throttle control shield.
(2) Remove throttle clasp from the throttle body
lever.
(3) Remove speed control cable from throttle lever
by sliding clasp out hole used for throttle cable.
(4) Compress the retaining tabs on the cable and
slide cable out of bracket.
(5) Disconnect electrical connector from servo.
(6) Disconnect vacuum hose from servo
(7) Remove 2 nuts retaining bracket to servo.
(8) Remove push nuts holding cable housing to
servo.
(9) Remove retaining clip holding cable to servo.
INSTALLATION
(1) Install retaining clip to cable at servo.
(2) Slide cable bell housing over servo mounting
studs.
(3) Install servo mounting studs into bracket.
(4) Install 2 nuts at cable to servo and servo
bracket, tighten to 7 N´m (60 ins. lbs.).
(5) Connect electrical connector to servo.
(6) Connect vacuum hose to servo
(7) Slide cable into throttle cable bracket and
engage retaining tabs.
(8) Rotate the throttle lever forward to the wide
open position and install speed control cable clasp.
(9) Rotate the throttle lever forward to the wide
open position and install throttle cable clasp.
(10) Install throttle control shield. Tighten bolt to
5.6 N´m (50 in. lbs.).
Fig. 10 Throttle Control Shield
Fig. 11 Throttle Cable Attachment to Throttle
BodyÐManual Transmission
PLVEHICLE SPEED CONTROL SYSTEM 8H - 9
REMOVAL AND INSTALLATION (Continued)

POWERTRAIN CONTROL MODULE
For Removal/Installation refer to Powertrain Con-
trol Module in Group 14, Fuel Injection System.
USE THE DRB SCAN TOOL TO REPROGRAM
THE NEW PCM WITH THE VEHICLES ORIGI-
NAL IDENTIFICATION NUMBER (VIN) AND
THE ORIGINAL VEHICLES MILEAGE. IF THIS
STEP IS NOT DONE A DIAGNOSTIC TROUBLE
CODE (DTC) MAY BE SET.
VACUUM RESERVOIR
REMOVAL
(1) Raise and support vehicle.
(2) Remove bolt on top of vacuum reservoir.
(3) Remove vacuum hoses.
(4) Remove vacuum reservoir.
INSTALLATION
(1) Install vacuum reservoir, install push pin and
tighten screw to 5 N.m (44 in. lbs.)..
(2) Install vacuum hoses.
(3) Lower vehicle.
VEHICLE SPEED SENSOR
For Removal/Installation, refer to Vehicle Speed
Sensor in Group 14, Fuel Injections.
Fig. 12 Throttle Cable Attachment to Throttle
BodyÐAutomatic Transmission
Fig. 13 Disconnecting Throttle Cable
8H - 10 VEHICLE SPEED CONTROL SYSTEMPL
REMOVAL AND INSTALLATION (Continued)

VEHICLE SPEED CONTROL SYSTEM
CONTENTS
page
REMOVAL AND INSTALLATION
SPEED CONTROL SERVO................ 1
REMOVAL AND INSTALLATION
SPEED CONTROL SERVO
REMOVAL
(1) Disconnect battery.
(2) Remove battery Thermoguard.
(3) Remove battery hold down and battery.
(4) Remove power distribution center from back of
battery tray.
(5) Disconnect speed control cable from throttle
body.
(6) Remove screw holding support strut to the
front of battery tray.
(7) Remove top two battery tray fasteners. Loosen
bottom two battery tray fasteners.
(8) Slide battery tray up, disconnect speed control
servo wiring and vacuum harness from servo (Fig. 1).
(9) Remove attaching nuts and remove speed con-
trol assembly from bottom of battery tray.
INSTALLATION
(1) For installation reverse above procedures. The
servo wiring connector should point towards the left
front corner of the vehicle with battery tray installed.
Tighten nuts to 7 N´m (60 in. lbs.) torque.Fig. 1 Battery Tray and Speed Control Servo
PLVEHICLE SPEED CONTROL SYSTEM 8H - 1

TURN SIGNAL AND FLASHERS
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DESCRIPTION AND OPERATION
COMBINATION FLASHER.................. 1
HAZARD WARNING SYSTEM............... 1DIAGNOSIS AND TESTING
MULTI-FUNCTION SWITCH................ 2
MULTI-FUNCTION SWITCH TEST............ 2
REMOVAL AND INSTALLATION
MULTI-FUNCTION SWITCH................ 4
GENERAL INFORMATION
INTRODUCTION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAG, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
AIRBAG REMOVAL PROCEDURES.
The turn signals are part of the multi-function
switch. Which contains:
²Electrical circuitry for turn signals
²Hazard warning switch
²Headlamp beam select switch
²Headlamp optical horn
The integrated switch assembly is mounted to the
left hand side of the steering column. When the
driver wishes to signal his intentions to change direc-
tion of travel, he moves the lever upward to cause
the right signals to flash and downward to cause the
left signals to flash. After completion of a turn the
system is deactivated automatically. As the steering
wheel returns to the straight ahead position, a can-
celing cam molded to the clockspring mechanism
comes in contact with the cancel actuator on the turn
signal multi-function switch assembly. The cam lobe,
pushing on the cancel actuator, returns the switch to
the off position.
If only momentary signaling such as indication of a
lane change is desired, the switch is actuated to a
left or right intermediate detent position. In this
position the signal lamps flash as described above,
but the switch returns to the OFF position as soon as
the lever is released.
When the system is activated, one of two indicator
lamps mounted in the instrument cluster flashes in
unison with the turn signal lamps, indicating to the
driver that the system is operating.
DESCRIPTION AND OPERATION
HAZARD WARNING SYSTEM
The hazard warning system is actuated by a slide
button located on the top of the steering column
between the steering wheel and the instrument
panel. The hazard switch is identified with a double
triangle on front of the button.
COMBINATION FLASHER
The turn signal flasher and the hazard warning
flasher are combined into one unit called a combina-
tion flasher (combo-flasher). The combo- flasher con-
trols the flashing of the hazard warning system and
the turn signal system. An inoperative bulb or incom-
plete turn signal circuit will cause the flasher rate to
double.
The combo-flasher is located on the fuse block. The
combo-flasher is black in color for ease of identifica-
tion (Fig. 1).
Fig. 1 Combo-Flasher
PLTURN SIGNAL AND FLASHERS 8J - 1

DIAGNOSIS AND TESTING
MULTI-FUNCTION SWITCH
The multi-function switch contains electrical cir-
cuitry for turn signal, hazard warning, headlamp
beam select, headlamp optical horn. This integratedswitch assembly is mounted to the left hand side of
the steering column. Should any function of the
switch fail, the entire switch assembly must be
replaced. Refer to Multi-function Switch Test Table
for diagnosis.
MULTI-FUNCTION SWITCH TEST
CONDITION POSSIBLE CAUSES CORRECTION
TURN SIGNAL FLASHES AT TWICE
THE NORMAL RATE.(1) FAULTY EXTERNAL LAMP.
(2) POOR GROUND AT LAMP.
(3) OPEN CIRCUIT IN WIRING TO
EXTERNAL LAMP.
(4) FAULTY CONTACT IN SWITCH.(1) REPLACE LAMP.
(2) CHECK AND/OR REPAIR WIRING
(3) REPAIR WIRING HARNESS.
CHECK CONNECTORS.
(4) REPLACE MULTI FUNCTION
SWITCH.
INDICATOR LAMP ILLUMINATED
BRIGHTLY, EXTERNAL LAMP
GLOWS DIMLY AT A RAPID RATE.(1) LOOSE OR CORRODED
EXTERNAL LAMP CONNECTION.
(2) POOR GROUND CIRCUIT AT
EXTERNAL LAMP.(1) REPLACE SOCKET CONNECTION.
(2) REPAIR WIRING HARNESS.
CHECK CONNECTORS.
HAZARD WARMING SYSTEM DOES
NOT FLASH.(1) FAULTY FUSE.
(2) FAULTY FLASHER.
(3) OPEN CIRCUIT IN FEED WIRE TO
SWITCH.
(4) FAULTY CONTACT IN SWITCH.
(5) OPEN OR GROUNDED CIRCUIT
IN WIRING TO EXTERNAL LAMPS.(1) REPLACE FUSE.
(2) REPLACE FLASHER.
(3) REPAIR WIRING HARNESS,
CHECK CONNECTORS.
(4) REPLACE MULTI FUNCTION
SWITCH.
(5) REPAIR WIRING HARNESS.
INDICATOR LAMP ILLUMINATES
BRIGHTLY, EXTERNAL LAMP DOES
NOT LIGHT.(1) OPEN CIRCUIT IN WIRE TO
EXTERNAL LAMP.
(2) BURNED OUT LAMP.(1) REPAIR WIRING HARNESS.
(2) REPLACE LAMP.
SYSTEM DOES NOT FLASH ON
EITHER SIDE.(1) FAULTY FUSE.
(2) FAULTY FLASHER UNIT.
(3) LOOSE BULKHEAD CONNECTOR.
(4) LOOSE OR FAULTY REAR
WIRING HARNESS OR TERMINALS.
(5) OPEN CIRCUIT TO FLASHER
UNIT.
(6) OPEN CIRCUIT IN FEED WIRE TO
TURN SIGNAL SWITCH.
(7) FAULTY SWITCH CONNECTION IN
SWITCH.
(8) OPEN OR GROUNDED CIRCUIT
IN WIRING TO EXTERNAL LAMPS.(1) REPLACE FUSE.
(2) REPLACE FLASHER.
(3) TIGHTEN CONNECTOR.
(4) REPAIR WIRING HARNESS
(5) CHECK CONNECTORS, REPAIR
WIRING HARNESS.
(6) CHECK CONNECTORS, REPAIR
WIRING HARNESS.
(7) REPLACE MULTI FUNCTION
SWITCH.
(8) REPAIR WIRING HARNESS.
SYSTEM DOES NOT CANCEL
AFTER COMPLETION OF THE
TURN.(1) BROKEN CANCELLING FINGER
ON SWITCH.
(2) BROKEN OR MISSING
CANCELLING CAM ON
CLOCKSPRING.(1) REPLACE MULTI FUNCTION
SWITCH.
(2) REPLACE CLOCKSPRING.
EXTERNAL LAMPS OPERATE
PROPERLY, NO INDICATOR LAMP
OPERATION.(1) FAULTY INDICATOR LAMP IN
INSTRUMENT CLUSTER.(1) REPLACE LAMP.
8J - 2 TURN SIGNAL AND FLASHERSPL

CONDITION POSSIBLE CAUSES CORRECTION
INDICATOR LAMP IN CLUSTER
ILLUMINATES WHEN BRAKES ARE
APPLIED(1) CANCEL RETURN SPRING IN
SWITCH MIS-POSITIONED.(1) REPLACE MULTI-FUNCTION
SWITCH.
PLTURN SIGNAL AND FLASHERS 8J - 3
DIAGNOSIS AND TESTING (Continued)