Chrysler Cirrus, Dodge Stratus, Plymouth Breeze Haynes. Instruction - page 36

12-16

Chapter 12 Chassis electrical system

SWITCH

POSITION

CONTINUITY

BETWEEN

RESISTANCE

VALUE

UNLOCK

1 and 4

2700 Ω ± 10%

LOCK

1 and 4

620 Ω ± 10%

26.5 Power door lock

switch terminal guide

and continuity chart

vehicle speed with a vacuum-actuated servo
motor located in the engine compartment,
which is connected to the throttle linkage by
a cable (see illustration). The system con-
sists of the Powertrain Control Module
(PCM), brake switch, control switches, a
relay, the vehicle speed sensor and associ-
ated wiring. Listed below are some general
procedures that may be used to locate com-
mon cruise control problems.

Check

2

If the system does not operate, check

the fuse (see Section 3). Also check the vac-

uum hose to the cruise control servo to make

sure it's not plugged, cracked or soft (which
will cause it to collapse in operation. With the
engine off, check the servo by applying vac-

uum (with a hand-operated vacuum pump) to

the vacuum fitting on the servo - the servo
should move the throttle linkage and hold
vacuum if it's working properly.
3

Have an assistant operate the brake

li ghts while you check their operation (voltage
from the brake light switch deactivates the
cruise control).
4

If the brake lights don't come on or

don't shut off the cruise control, correct the
problem and recheck cruise control opera-
tion.
5

Inspect the cable linkage between the

cruise control servo and the throttle linkage.
The cruise control servo is located on the left
(driver's) side of the vehicle.
6

Visually inspect the wires connected to

the cruise control servo and check for dam-
age and broken wires.
7

The cruise control on these vehicles use

two types of Vehicle Speed Sensors (VSS).
The VSS is located in the transaxle. Note:
Due to the complexity of diagnosing the Out-

put speed sensor on automatic transaxles,

this manual only addresses the VSS on man-
ual transaxles. However, you can still make

sure the electrical connector at the sensor is

clean and tight. Refer to Chapter 6 for infor-
mation on checking the
VSS on manual
transaxles.
8

Test drive the vehicle to determine if the

cruise control is now working properly. If it
isn't, take it to a dealer service department or
an automotive electrical specialist for further
diagnosis and repair.

25 Electric rear view mirrors -

description and check

General description

1

Electric rear view mirrors use two

motors to move the glass; one for up-and-

down adjustments and one for left-to-right
adjustments. The motors are integral with the

mirror assembly and not serviceable.

Check

2

The control switch, located in the

driver's door panel, has a selector portion

which sends voltage to the left or right side
mirror. With the ignition ON but the engine
OFF, roll down the windows and operate the
mirror control switch through all functions
(l eft-right and up-down) for both the left and
right side mirrors.
3

Listen carefully for the sound of the

electric motors running in the mirrors.
4

If the motors can be heard but the mirror

glass doesn't move, there's probably a prob-
lem with the drive mechanism inside the mir-
ror. Remove and disassemble the exterior
mirror to locate the problem and correct if
possible (see Chapter 11).
5

If the mirrors don't operate and no

sound comes from the mirrors, check the
fuses (see Section 3).
6

If the fuses are OK, remove the door trim

panel (see Chapter 11).
7

Turn the ignition switch ON and check

for battery voltage at the mirror switch electri-
cal connector PINK wire terminal. Battery
voltage should be present. If there's no volt-
age at the switch, check for an open or short

in the wiring between the fuse panel and the

switch and repair the circuit (see Section 31).

Note: It's common for wires to break in the

portion of the harness between the body and
door (opening and closing the
door fatigues
and eventually breaks the wires).
8

If voltage is present, connect a jumper

wire from the BLACK wire terminal to a good
ground on the chassis. Use another fused
jumper wire and connect the PINK wire termi-
nal to each one of the other terminals with the
ignition switch ON (engine OFF). If the mirror
motor operates, replace the switch. If the mir-
ror does not respond, replace the discrepant
mirror assembly (see Chapter 11).

26 Power door lock system -

description and check

General description

1

Power door lock systems are operated

by bi-directional solenoids located in each
door latch. The lock switches have two oper-
ating positions: Lock and Unlock. These
switches connect voltage to the door latch
solenoids. Depending on which way the
switch is activated, it reverses polarity, allow-
ing the two sides of the circuit to be used
alternately as the feed (positive) and ground
side.

Check

Refer to illustration 26.5
2

Check the fuses (see Section 3).

3

Operate the door lock switches in both

directions (Lock and Unlock) with the ignition
ON (engine OFF). Listen for the click of the
solenoid operating.
4

If there's no click, check for voltage at

the switches. If no voltage is present, check
the wiring between the fuse panel and the
switches for continuity.
5

If voltage is present but no click is

heard, remove the door trim panel (see Chap-
ter 11). Using an ohmmeter and the accom-
panying chart, check for continuity between
the switch terminals with the switch in each
position (see illustration). Replace the
switch if the resistance value is not as speci-
fied.
6

With the ignition ON (engine OFF), use a

voltmeter to check for battery voltage to the
switch electrical connector at the PINK wire

terminal. Repair the wiring if voltage is not

present.
7

If the switch is OK and voltage is pre-

sent but the solenoid still doesn't click, check

the wiring between the switch and solenoid
for continuity. Repair the wiring if there's no

continuity.
8

Using a voltmeter, check for battery

voltage at the solenoid electrical connector;
with the ignition switch ON (engine OFF)

operate the lock switch. One of the wires

should have voltage in the Lock position; the
other should have voltage in the Unlock posi-
tion. If voltage is present, replace the door

latch assembly (see Chapter 11). If the inop-

erative solenoid isn't receiving voltage, check
for an open or short in the wire between the
switch and the solenoid. Note: It's common
for wires to break in the portion of the harness
between the body and door (opening and
closing the door fatigues and eventually
breaks the wires).

27 Power window system -

description, check and window

motor replacement

General description

1

The power window system consists of

the circuit breaker, control switches, the
motors, glass mechanisms (regulators), and

Chapter 12 Chassis electrical system

12-17

27.9b Remote power window switch terminal guide and

continuity chart

SWITCH

Position

CONTINUITY

BETWEEN

TERMINALS

CONTINUITY

BETWEEN

TERMINALS

OFF

PIN 10 to 2

PIN 10 to 3
PIN
10 to 4
PIN 10 to 7
PIN 10 to 8
PIN 10 to 9
PIN 10 to 11
PIN 10 to 12

UP

DRIVER'S

PIN 1 to 7
PIN 8 to 10

UP

RIGHT

PIN 1 to 12

FRONT

PIN 10 to 11

UP

LEFT

PIN 3 to 10

REAR

PIN 1 to 2

UP

RIGHT

PIN 1 to 4

REAR

PIN9to 10

DOWN DRIVER'S

PIN 1 to 8
PIN7to10

DOWN RIGHT

PIN 1 to 11

FRONT

PIN 10 to 12

DOWN LEFT

PIN 3 to 1

REAR

PIN 2 to 10

DOWN RIGHT

PIN 1 to 9

REAR

PIN 4 to 10

WINDOW LOCK

PIN 1 to 5

27.9a Power window master (driver's) switch terminal guide and

continuity chart

SWITCH

POSITION

associated wiring.
2

Power windows are wired so they can

be lowered and raised from the master con-
trol switch by the driver or by remote
switches located at the individual windows.
Each window has a separate motor which is
reversible. The position of the control switch
determines the polarity and therefore the
direction of operation.
3

The power window system will operate

only when the ignition switch is in the ON
position.

Check

Refer to illustrations 27.9a and 27.9b

4

These procedures are general in nature,

so if you can't find the problem after perform-
ing them, take the vehicle to a dealer service
department or other qualified repair shop for

further diagnosis and/or repair.

5

If the power windows don't work at all,

check the circuit breaker continuity (see Sec-

tion 3).
6

If the circuit breaker is OK, remove the

door trim panel from the driver's door (see

Chapter 11).
7

With the ignition ON (engine OFF), use a

voltmeter to check for battery voltage to the

master switch electrical connector at the TAN

wire terminal. Note: Battery voltage should
also be present at one terminal on each
remote switch. Repair the wiring if voltage is
not present.
8

If one window is inoperative from the

master control switch, try the control switch

located at that window. Note: This doesn't
apply to the driver's door window.
9

If a window works from one switch, but

not the other, remove the door trim panel
(see Chapter 11) and check the switch for
continuity. Use an ohmmeter and the accom-
panying chart to check for continuity
between the switch terminals with the switch
in each position (see illustrations). Replace

the switch if continuity is not as specified.

10 If the switch tests OK, check for a short
or open circuit in the wiring between the
affected switch and the window motor.
11

If one window is inoperative from both

switches, remove the trim panel from the
affected door (see Chapter 11) and check for
voltage at the motor while the switch is oper-
ated.
12 If voltage is reaching the motor, discon-
nect the glass from the regulator (see Chap-
ter 11). Move the window up and down by
hand while checking for binding and damage.

Also check for binding and damage to the

regulator. If the regulator is not damaged and
the window moves up and down smoothly,
replace the motor (see below). If there's bind-
ing or damage, lubricate, repair or replace
parts, as necessary.
13 If voltage isn't reaching the motor and
switch continuity is OK, check the wiring in

the circuit for continuity between the interior
fuse block and the switch, master switch to

remote switch, and local switch to the win-
dow motor. Note: It's common for wires to

break in the portion of the harness between

the body and door (opening and closing the

door fatigues and eventually breaks the
wires).

14

Test window operation after you are fin-

ished to confirm proper repairs.

Window motor - replacement

Refer to illustration 27.17
Warning: Do not remove the window motor
from the regulator assembly without first
clamping the sector gear to the mounting
plate or serious personal injury may result.
The sector
gear is spring loaded.

15

Remove the window regulator (see

Chapter 11).

16

Using a C-clamp or locking pliers, clamp

the sector gear to the mounting plate.

17

Remove the bolts securing the motor

and remove it from the regulator (see illus-
tration).
18 Installation is the reverse of removal.

28 Power seats - description and

check

General description

1

Power seats allow you to adjust the

position of the seat with little effort. The
optional power seats on these vehicles adjust
8 ways; forward and backward, up and
down, tilt forward and backward, and recline
up and down.
2

The power seat system consists of four

individual electric motors, the seat switch, a

12

12-18

Chapter 12

Chassis

electrical

system

SWITCH POSITION

CONTINUITY
BETWEEN

OFF

1-2, 1-3,
1-6, 1-7,
1-9, 1-10

1-4,
1-8,

SEATBACK RECLINER UP

5-2, 1-4

SEATBACK RECLINER DOWN

5-4, 1-2

SEAT BACKWARD

5-3, 1-6

SEAT FORWARD

5-6, 1-3

FRONT RISER UP

5-4, 1-10

FRONT RISER DOWN

5-10, 1-7

REAR RISER UP

5-8, 1-9

REAR RISER DOWN

5-9, 1-8

20 amp circuit breaker (located in the interior
fuse block), a 40 amp fuse located in the
Power Distribution Center and the wires that
connect them.

Check

Refer to illustration 28.8
3

These procedures are general in nature,

29.1a The driver's side airbag (arrow) is
located in the steering column horn pad

so if you can't find the problem after perform-
ing them, take the vehicle to a dealer service
department or other qualified repair shop for
further diagnosis and/or repair.
4

First, look under the seat for any objects

which may be caught in the seat mechanism
preventing the seat from moving.
5

Check the circuit breaker continuity (see

Section 3).
6

In a quiet place, operate the seat switch

and listen for motor actuation. If you can hear
the motors, but the seat doesn't move,
something is jammed in the mechanism or
the mechanism itself is damaged. Repair or
replace parts as necessary.
7

If the motors don't make any sound,

check for battery voltage at the seat switch
connector RED wire. Battery voltage should
be present, if it isn't, repair the wiring.
8

If voltage is present at the RED wire,

remove the seat switch and check it for conti-
nuity in all operating positions (see illustra-

tion). Replace the switch if any position does

not have continuity as specified.
9

If the switch is OK, check the operation

of each individual motor. Disconnect the
electrical connector from the motor. Using
fused jumper wires, apply battery voltage to
the motor electrical connector. The motor

should operate. Reverse the polarity of the
voltage applied. The motor should operate in
the opposite direction. If the motor fails to
respond as noted, replace the motor(s).
10 If the switch is OK and the motors are
operational, an open circuit exists between
the switch and the motor(s). Repair the wiring

as required.

General description

Refer to illustrations 29.1a, 29.1b and 29.1c

These models are equipped with a Sup-

plemental Restraint System (SRS), more
commonly called an airbag system. This sys-
tem is designed to protect the driver and

front seat passenger from serious injury in the

event of a collision. It consists of airbag mod-
ules in the center of the steering wheel and

the right side top surface of the dashboard

(see illustrations). The Airbag Control Mod-
ule (ACM), which is mounted on the floorpan
between the shift lever and the parking brake
lever under the center console, controls the

system and also incorporates the impact
sensor (see illustration).

Airbag modules

Each airbag module contains a housing

incorporating the cushion (airbag) and inflator
unit. The inflator assembly is mounted on the
back of the housing over a hole through
which gas is expelled, inflating the bag
almost instantaneously when an electrical
signal is sent from the system. The steering
column incorporates a specially wound wire
called a clockspring that carries this signal to
the module regardless of the steering wheel
position. The clockspring is a flat, ribbon-like
electrically conductive tape which is wound
so that the steering wheel can be rotated to
any position without ever loosing electrical
contact.

10

0

28.8 Power seat switch

29

Airbag system - general

terminal guide and

continuity chart

information

29.1b The passenger's airbag (arrow) is located on the dashboard

above the glove box

29.1c The Airbag Control Module is located under the center

console and mounted to the floorpan

Chapter 12 Chassis electrical system

12-19

I mpact sensor

The system has one impact sensor

located inside the Airbag Control Module
(ACM). The impact sensor acts as a threshold
sensitive switch that completes an electrical
circuit during an impact of sufficient G-force.
When the circuit is completed, the airbags
inflate.

Airbag Control Module (ACM)

The ACM also contains the safing sen-

sor, a capacitor that maintains an electrical
charge strong enough to deploy the airbags
which lasts approximately two minutes after
the battery power has been disconnected.

Additionally, the ACM incorporates an on-

board microprocessor which monitors the
operation of the system. It checks this sys-
tem every time the vehicle is started, causing
the AIRBAG light to go on, then off, if the sys-
tem is operating properly. If there is a fault in

the system, the light will go on and stay on, or

the light will fail to go on, and the ACM will
store fault codes indicating the nature of the

fault. If the AIRBAG light does go on and stay

on, the vehicle should be taken to your dealer
immediately for service.

Disabling the airbag system

Whenever working in the vicinity of the

center console, steering column or instru-
ment panel the airbags must be disarmed. To
disable the airbag system, perform the fol-
lowing steps:

a) Make sure the steering wheel is in the

straight-ahead position, turn the ignition
key
to the Lock position and remove the
key.

b) Disconnect and isolate the negative bat-

tery cable from the ground stud on the
left shock tower
(see Chapter 5, Sec-
tion 1).

c) Wait at least two minutes for the backup

power supply to be depleted before

beginning work.

Enabling the system

To enable the airbag system, perform

the following steps:

a) Make sure the steering wheel is in the

straight-ahead position, the ignition

switch is in the Lock position and the
key is removed.

b) Connect the negative battery cable to

the ground stud on the left shock tower.

c) Turn the ignition switch to the On posi-

tion. Observe the airbag warning light, it

should glow for approximately 6 to 8
seconds then go out, indicating the sys-

tem is functioning properly

30 Compass/temperature Mini-Trip

Computer self diagnosis (if
equipped)

General description

1

The Compass/temperature Mini-Trip

Computer (CMTC) is capable of performing a
self-check on it's internal functions. When
activated, the CMTC will illuminate all seg-
ments of the vacuum florescent (VF) display
and indicate it's status. Upon completion of

the internal check, the CMTC will display one

of the following: PASS, FAIL or CCD. Due to

the complexity of diagnosing and replacing
the CMTC or related components, this check

should be used for indication purposes only.
If anything but PASS is displayed after the
test is performed, have the vehicle diag-
nosed/repaired at a dealer service depart-
ment or other qualified repair shop.

Starting the self-diagnosis

2

With the ignition switch in the OFF posi-

tion, simultaneously depress the US/M and
STEP buttons.
3

While holding the buttons down, turn

the ignition switch to the ON position. The
CMTC will begin diagnosis and display one of
the following:

a) PASS: All functions operational - system

OK

b) FAIL: The CMTC module is faulty and

should be replaced

c) CCD: A CCD bus connection or the

Body Control Module is faulty

31

Wiring diagrams

1

Since it isn't possible to include all

wiring diagrams for every year covered by
this manual, the following diagrams are those
that are typical and most commonly needed.
2

Prior to troubleshooting any circuits,

check the fuse and circuit breakers (if
equipped) to make sure they're in good con-
dition. Make sure the battery is properly
charged and check the cable connections
(see Chapter 1).
3

When checking a circuit, make sure that

all connectors are clean, with no broken or
loose terminals. When unplugging a connec-

tor, do not pull on the wires. Pull only on the

connector housings themselves.

12

12-20

Chapter 12 Chassis electrical system

Engine control system - 1995 and 1996 four-cylinder models (1 of 4)

Chapter 12 Chassis electrical system

12-21

Engine control system - 1995 and 1996 four-cylinder models (2 of 4)

12

12-22

Chapter 12 Chassis electrical system

Engine control system - 1995 and 1996 four-cylinder models (3 of 4)

Chapter 12 Chassis electrical system

12-23

Engine control system - 1995 and 1996 four-cylinder models (4 of 4)

12

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