1996 CHRYSLER VOYAGER battery

(b) If the horn does not sound, install horn relay
and refer to Horn Test.
HORNS WILL NOT SOUND
Check horn fuse 6 in the Power Distribution Cen-
ter and fuse 7 in the Junction Block. If fuse is blown
refer to FUSE BLOWN section. If fuse is OK, refer to
FUSE OK section.
FUSE BLOWN
(1) Verify condition of battery terminals and volt-
age, refer to Group 8A, Battery. If battery connec-
tions and battery charge is OK proceed to Step 2.
(2) Using a voltmeter, test for battery voltage at
both sides of horn fuse 7. If voltage is OK, on both
sides of fuse, proceed to Fuse OK. If voltage is OK,
on one side of fuse, the fuse is blown, proceed to Step
3.
(3) Using a suitable ammeter in place of the fuse,
test amperage draw of the horn circuit. If amperage
draw is greater than 20 amps without the horn
switch depressed, a grounded circuit exists between
the fuse and the horn relay. Proceed to Step 4. If
amperage draw is greater than 20 amps with the
horn switch depressed, a grounded circuit exists
between the horn relay and the horn. Proceed to step
Step 5.
(4) Remove the horn relay from the Junction
Block. If the amperage draw drops to 0 amps, the
horn switch or circuit is shorted. Refer to group 8W,
Wiring Diagrams for circuit information. If the
amperage draw does not drop to 0 amps, repair short
at the Junction Block.
(5) Disengage a wire connector from one of the
horns. If amperage drops and the connected horn
sounds, replace the faulty horn. If amperage does not
drop with both horns disconnected and the horn
switch depressed, proceed to Step 6.
(6) Using a continuity tester, with the horns dis-
connected test continuity of the X2 cavity of the horn
relay to ground. Refer to Group 8W, Wiring Diagrams
for circuit information. If continuity is detected, the
circuit is grounded between the Junction Block and
the horns. Locate and repair pinched harness.
FUSE OK
(1) Remove the horn relay from the Junction
Block.
(2) Using a continuity tester, Depress horn switch
and test continuity from the X3 cavity of the horn
relay to ground. Refer to Group 8W, Wiring Diagrams
for circuit information.
(a) If continuity is detected, proceed to Step 3.
(b) If NO continuity, proceed to Step 4.
(3) Using a suitable jumper wire, jump across the
fuse F62 cavity and the X2 cavity of the horn relay in
the Junction Block.
(a) If the horn sounds, replace the horn relay.
(b) If the horn does not sound, proceed to Step 4.
(4) Remove airbag/horn pad from steering wheel.
Refer to Group 8M, Restraint Systems for proper pro-
cedures.
(5) Test continuity across horn switch connectors
with horn switch depressed.
(a) If continuity is detected, repair open circuit
between the relay and the horn switch.
(b) If NO continuity, replace airbag cover.
(6) Install horn relay into Junction Block.
(7) Disengage wire connectors from horns.
(8) Using a voltmeter, with the horn switch
depressed test voltage across horn connector termi-
nals of the wire harness (Fig. 3).
(a) If voltage is detected, replace horns.
(b) If NO voltage, proceed to step Step 9.
(9) With the horn switch depressed, test for volt-
age between the X2 circuit and ground.
(a) If voltage OK, repair system ground at right
cowl area. Refer to Group 8W, Wiring Diagrams.
(b) If NO voltage, repair open X2 circuit between
the relay and the horns.
Fig. 2 Horn Relay
Fig. 3 Horn and Connector
8G - 2 HORNSNS
DIAGNOSIS AND TESTING (Continued)

VEHICLE SPEED CONTROL SYSTEM
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DESCRIPTION AND OPERATION
AUTOMATIC SPEED CONTROL OVERSPEED
REDUCTION........................... 2
POWERTRAIN CONTROL MODULE.......... 2
SERVO CABLE.......................... 2
SPEED CONTROL SERVO.................. 1
SPEED CONTROL SWITCHES.............. 1
STOP LAMP SWITCH..................... 2
VACUUM RESERVOIR.................... 3
VEHICLE SPEED AND DISTANCE............ 3
DIAGNOSIS AND TESTING
CHECKING FOR DIAGNOSTIC CODES........ 3
ELECTRICAL TESTS AT POWERTRAIN
CONTROL MODULE..................... 6OVERSHOOT/UNDERSHOOT FOLLOWING
SPEED CONTROL SET................... 3
ROAD TEST............................ 3
SERVO VACUUM TEST.................... 6
SPEED CONTROL ELECTRICAL TEST........ 4
SPEED CONTROL SWITCH TEST............ 6
STOP LAMP SWITCH TEST................ 6
VACUUM SUPPLY TEST................... 8
VEHICLE SPEED SENSOR................. 8
REMOVAL AND INSTALLATION
POWERTRAIN CONTROL MODULE.......... 9
SPEED CONTROL CABLE.................. 9
SPEED CONTROL SERVO.................. 8
SPEED CONTROL SWITCHES.............. 9
STOP LAMP SWITCH.................... 9
VACUUM RESEROIR..................... 10
VEHICLE SPEED SENSOR................ 10
GENERAL INFORMATION
INTRODUCTION
The speed control system is electronically con-
trolled and vacuum operated. The electronic control
is integrated into the powertrain control module,
located next to battery. The controls are located on
the steering wheel and consist of the ON/OFF, SET,
RESUME/ACCEL, CANCEL and DECEL buttons
(Fig. 1).
DESCRIPTION AND OPERATION
SPEED CONTROL SERVO
The servo unit consists of a solenoid valve body,
and a vacuum chamber. The PCM controls the sole-
noid valve body. The solenoid valve body controls the
application and release of vacuum to the diaphragm
of the vacuum servo. The servo unit cannot be
repaired and is serviced only as a complete assembly.
SPEED CONTROL SWITCHES
There are two separate switch pods that operate
the speed control system. The steering-wheel-
mounted switches use multiplexed circuits to provide
inputs to the PCM for ON, OFF, RESUME, ACCEL-
ERATE, SET, DECEL and CANCEL modes. Refer to
the owner's manual for more information on speed
control switch functions and setting procedures.
When speed control is selected by depressing the
ON switch, the PCM allows a set speed to be stored
in RAM for speed control. To store a set speed,
depress the SET switch while the vehicle is moving
at a speed between 30 and 85 mph. In order for the
speed control to engage, the brakes cannot be
applied, nor can the gear selector be indicating the
transmission is in Park or Neutral.
The speed control can be disengaged manually by:
²Stepping on the brake pedal
Fig. 1 Speed Control Switches
NSVEHICLE SPEED CONTROL SYSTEM 8H - 1

VACUUM SUPPLY TEST
(1) Disconnect vacuum hose at the servo and
install a vacuum gauge in the hose (Fig. 7).
(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) Release hood latch and open hood.
(2) On vehicles with 3.3/3.8 L engine, remove air
cleaner resonator. Refer to Group 14, Fuel System for
proper procedure.
(3) Disconnect the throttle and speed control cable
ends from throttle body (Fig. 8).
(4) Depress lock tabs holding speed control cable
casing to cable mount bracket (Fig. 9).(5) Disconnect vacuum line from nipple on air
intake plenum.
(6) Remove tie wrap holding vacuum line, throttle
cable, and speed control cable together.
(7) Remove bolt holding speed control servo to side
of battery tray/vacuum reservoir (Fig. 10).
(8) Remove speed control servo from battery tray.
(9) Disconnect wire connector from speed control
servo.
(10) Disconnect vacuum line from speed control
servo that leads to the battery tray/vacuum reservoir.
(11) Remove speed control servo.
Fig. 7 Vacuum Gauge Test
Fig. 8 Speed Control Cable End
Fig. 9 Speed Control Cable Case and Vacuum
LineÐTypical
8H - 8 VEHICLE SPEED CONTROL SYSTEMNS
DIAGNOSIS AND TESTING (Continued)

INSTALLATION
Transfer speed control cable to replacement speed
control servo. Reverse the preceding operation.
SPEED CONTROL SWITCHES
REMOVAL
(1) Release hood latch and open hood.
(2) Disconnect battery negative cable.
(3) Remove airbag/horn pad from steering wheel,
refer to Group 8M, Restraint Systems for proper pro-
cedures.
(4) Disconnect wire connector from horn switch,
airbag, and speed control switches.
(5) Remove screws holding speed control switch to
airbag/horn pad (Fig. 11).
(6) Separate speed control switch from airbag/horn
pad.
INSTALLATION
Reverse the preceding operation.
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
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 CABLE
REMOVAL
(1) Release hood latch and open hood.
(2) On vehicles with 3.3/3.8 L engine, remove air
cleaner resonator. Refer to Group 14, Fuel System for
proper procedure.
(3) Disconnect throttle and speed control cable
ends from throttle body (Fig. 8).
(4) Depress lock tabs holding speed control cable
casing to cable mount bracket (Fig. 12).
(5) Remove tie wrap holding vacuum line, throttle
cable, and speed control cable together.
(6) Remove nuts holding speed control cable case
to servo.
(7) Remove cable case from servo.
(8) Remove hairpin clip holding cable end to servo
diaphragm (Fig. 12).
(9) Remove speed control cable.
INSTALLATION
Reverse the preceding operation.
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 ORGINAL VEHICLES MILAGE. IF THIS
Fig. 10 Speed Control Servo
Fig. 11 Speed Control Switches
NSVEHICLE SPEED CONTROL SYSTEM 8H - 9
REMOVAL AND INSTALLATION (Continued)

STEP IS NOT DONE A DIAGONSTIC TROUBLE
CODE (DTC) MAY BE SET.
VACUUM RESEROIR
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove battery, Refer to Group 8B, for Battery
Removal/Installation
(3) Remove battery tray.
(4) Disconnect vacuum hoses from vacuum reser-
voir
INSTALLATION
(1) Connect vacuum hoses to vacuum reservoir.
(2) Install battery tray
(3) Install battery, Refer to Group 8B, for Battery
Removal/Installation.
(4) Connect negative cable to battery.
VEHICLE SPEED SENSOR
For Removal/Installation, refer to Vehicle Speed
Sensor in Group 14, Fuel Injections.
Fig. 12 Speed Control Cable
8H - 10 VEHICLE SPEED CONTROL SYSTEMNS
REMOVAL AND INSTALLATION (Continued)

COMBINATION FLASHER WITH / WITHOUT
DAYTIME RUNNING LAMPS MODULEÐCIRCUIT
DIAGNOSTICS
The battery input (Pin 1), is brought into the Junction
Block through the Electrical Distribution Wiring (EDW)
harness (Fig. 4). It originates under the hood in thePower Distribution Center (PDC) through a 20 ampere
fuse at position 10 (9th position from the upper end) and
labeled HAZARD. This circuit (L09) is the only power
feed to the combination-flasher/DRL.
The ignition input of Pin 6 (refer to Junction Block
Terminal Call-Out and Junction Block Terminal Call-Out
with DRL tables) only senses that the ignition circuit is
ON and does not supply current to the module in a way
that would power the system. This RUN/START circuit is
brought into the junction block to a 10 ampere fuse
labeled TS BU LMP at the bottom right side. The circuit
designation out of the fuse is A22D. This circuit feeds the
combo-flasher and the following systems with Ignition
voltage if the vehicle is so equipped:
²Back-Up Lamps
²Electrochromic Inside Rear view Mirror
²A/C Control Head
²Mini-Trip Computer
²ABS Module
²Front Blower Relay Coil
²Rear Blower Relay Coil
²AWD Solenoids
²Rear Window Defogger (EBL) Relay Coil
The ignition input to the combo-flasher will draw
typically 5 mA of current while active.
For diagnostic test procedures, refer to Combina-
tion Flasher Diagnosis tables.
Fig. 4 Electronic Combination Flasher Circuit
Fig. 3 Turn Signal±Multi-Function Switch Pin
numbers
TURN SIGNAL MULTI-FUNCTION SWITCH
TEST
SWITCH POSITIONCONTINUITY
BETWEEN
LEFT 4 AND 8
RIGHT 3 AND 8
HAZARD 1 AND 8
LO BEAM 9 AND 10
HI BEAM 9 AND 121
NSTURN SIGNAL AND FLASHERS 8J - 3
DIAGNOSIS AND TESTING (Continued)

Fig. 5 Electronic Combination Flasher with DRL Circuit
JUNCTION BLOCK TERMINAL CALL-OUT
CAV. CKT. WIRE
GAUGECOLOR FUNCTION
1 L09 18 BLK/WT BATTERY INTPUT MAIN FEED
2 L61 18 LG LEFT FRONT T/S OUTPUT TO LAMP
3 L60 18 TN RIGHT FRONT T/S OUTPUT TO LAMP
4 L63 18 DG/RD LEFT REAR T/S OUTPUT TO LAMP
5 L62 18 BR/RD RIGHT REAR T/S OUTPUT TO LAMP
6 A22D 20 BK/OR IGNITION INPUT SENSE ONLY
7 L305 22 LB/WT LEFT T/S SWITCH INPUT SENSE ONLY
8 L302 22 LB/YL RIGHT T/S SWITCH INPUT SENSE ONLY
9 L91 22 DB/PK HAZARD SWITCH INPUT SENSE ONLY
8J - 4 TURN SIGNAL AND FLASHERSNS
DIAGNOSIS AND TESTING (Continued)

JUNCTION BLOCK TERMINAL CALL-OUT WITH DRL
CAV. CKT. WIRE
GAUGECOLOR FUNCTION
1 L09 18 BLK/WT BATTERY INTPUT MAIN FEED
2 L61 18 LG LEFT FRONT T/S OUTPUT TO LAMP
3 L60 18 TN RIGHT FRONT T/S OUTPUT TO LAMP
4 L63 18 DG/RD LEFT REAR T/S OUTPUT TO LAMP
5 L62 18 BR/RD RIGHT REAR T/S OUTPUT TO LAMP
6 A22D 20 BK/OR IGNITION INPUT SENSE ONLY
7 L305 22 LB/WT LEFT T/S SWITCH INPUT SENSE ONLY
8 L302 22 LB/YL RIGHT T/S SWITCH INPUT SENSE ONLY
9 L91 22 DB/PK HAZARD SWITCH INPUT SENSE ONLY
10 G09 22 GY/BK PARK BRAKE SWITCH INPUT SENSE ONLY
11 Z01 14 BK GROUND MAIN GRD.
12 L93 22 RD/YL HEADLAMP RELAY SWITCH
INPUTSENSE ONLY
NSTURN SIGNAL AND FLASHERS 8J - 5
DIAGNOSIS AND TESTING (Continued)