Chrysler Pacifica. Manual - part 4

Low Washer Fluid:
Chime sounds when the washer fluid drops below a
specific level.

Door Ajar
Chime sounds when the vehicle is moving (above 1
mph /1.61 kph) and any door is open

3.5.3

WARNING LAMP ANNOUNCEMENT

Low Fuel Lamp:
The cluster will sound a single chime and display
an EVIC warning message after illuminating the
indicator.

Volt Lamp:
The cluster will sound a single chime after illumi-
nating the indicator.

Oil Pressure Lamp:
The cluster will sound a single chime after illumi-
nating the indicator above 450-rpm.

Fasten Seat Belt Lamp:
There are two different Fasten Seat Belt Reminder
announcements incorporated into the MIC’s logic,
a Non-enhanced announcement and an Enhanced
announcement.
When the Enhanced announcement is DISABLED,
the Fasten Seat Belt Reminder operates as follows:

•

The BCM will request the MIC to chime five
times and illuminate the Seat Belt Lamp after
turning the ignition to the run/start position if
the driver seat belt is unbuckled.

When the Enhanced announcement is ENABLED,
the Fasten Seat Belt Reminder operates as follows:

•

The BCM will request the MIC to chime contin-
uously at a slow rate for a period of 6 seconds and
illuminate the Seat Belt Lamp after turning the
ignition to the run/start position if the driver
seat belt is unbuckled. After 6 seconds the chime
will stop, but the Seat Belt Lamp will stay
illuminated. If the ignition is in the run position
for a period greater than 70 seconds, and the
driver seat belt is unbuckled, and the vehicle’s
speed is greater than 5 mph (8 km/h) in a
forward gear, the Enhanced Fasten Seat Belt
Reminder will activate. This will cause the Seat
Belt Lamp to blink and a slow continuous chime
to sound for 5 seconds. After 5 seconds, the chime
will stop, but the lamp will remain illuminated
for an additional 3 seconds. The Enhanced Seat
Belt Reminder cycles for a total of 12 times (96
seconds). After the 12th time, the Seat Belt
Lamp will remain on without any chime. Buck-
ling the driver seat belt at anytime will cancel
the Fasten Seat Belt Reminder announcement.

Check Engine Lamp:
The cluster will sound a single chime after illumi-
nating the indicator.

Engine Temperature Lamp:
The cluster will sound a single chime when the
indicator first illuminates at 252°F (122°C).

Traction control Lamp:
The cluster will sound a chime and display an
EVIC warning message after illuminating the in-
dicator if the traction control system:

•

Is active.

•

Is suspended.

•

Needs service.

•

Is disabled by the driver.

Turn Signal On:
If the BCM detects a turn signal input continu-
ously for 1.0 mile (0.6 km) and the vehicle speed is
greater than 15 mph (24 km/h), the cluster will
chime continuously and display an EVIC warning
message, until the turn signal is cancelled.

3.5.4

OTHER CHIME ON CONDITIONS

Bulb Check:
The chime will sound one time during bulb check.

Brake Lamp:
The cluster will sound a chime and display an
EVIC warning message if the:

•

Park brake is engaged and the vehicle speed
exceeds 1 mph (1.61 km/h).

•

Brake fluid is low.

Memory:
The cluster will sound a chime and display an
EVIC message when:

•

Memory position #1 is set.

•

Memory position #2 is set.

•

The vehicle is out of park and a memory recall is
selected.

•

A memory recall is activated while the seat is in
motion during another memory recall.

Service:
The cluster will sound a chime and display an
EVIC message when the vehicle reaches the time
to perform service.

RKE:
The cluster will sound a chime and display an
EVIC message upon activation of:

•

The key fob with a low battery.

•

An invalid key fob and key.

GENERAL INFORMATION

Immobilizer:
The cluster will sound a chime and display an
EVIC message when there is a problem with the
SKREEM Module.

Power Liftgate:
The cluster will sound a chime and display an
EVIC message when there is a power liftgate
actuation with the:

•

Overhead console or RKE and the doors are
locked.

•

Overhead console and the vehicle is not in park.

•

Overhead console or RKE and the temperature
is too cold for actuation.

•

Overhead console or RKE and the temperature
is too hot for actuation.

Tire Pressure Monitor System:
The tire pressure monitoring system will request:

•

A chime, illuminate an amber TPM indicator
lamp, and display an EVIC message when the
system senses that there is a low tire pressure
problem.

•

A chime and display an EVIC message when the
system senses that there is a high tire pressure
problem.

•

Three fast chimes and display an EVIC message
when the system senses that one of the four
original tires on the vehicle has been changed.

•

A chime, illuminate an amber message indicator
lamp, and display an EVIC message if the sys-
tem does not sense any tire pressure.

•

A chime, illuminate a red message indicator
lamp, and display an EVIC message when the
tire system needs service.

3.6

COMMUNICATION

The Programmable Communication Interface or

PCI Bus is a single wire multiplexed network
capable of supporting binary encoded messages
shared between multiple modules. The PCI Bus
circuit is identified as D25 and is white with a
violet tracer. Additional tracer colors may be added
to the violet in order to distinguish between differ-
ent module connections. The modules are wired in
parallel. Connections are made in the harness
using splices. The following modules are used on
CS vehicles:

•

Body Control Module

•

Integrated Power Module (IPM)

•

Powertrain Control Module (PCM)

•

Mechanical Instrument Cluster (MIC)

•

Occupant Restraint Controller (ORC)

•

Occupant Classification Module

•

Overhead Console

•

Antilock Brake Module (ABM)

•

Automatic Temperature Control Module (ATC)

•

Manual Temperature Control (MTC)

•

Power Liftgate Module (PLGM)

•

Radio

•

Amplifier

•

DVD/CD Changer

•

Satellite Radio Receiver

•

Memory/Heated Seat Adjustable Pedal Module

•

Sentry Key Remote Entry Module (SKREEM)

•

Driver Door Module (DDM)

•

Passenger Door Module (PDM)

•

Navigation Module

•

Hands Free Module

•

Park Assist Module

Each module provides its own bias and termina-

tion in order to transmit and receive messages. The
bus voltage is at zero volts when no modules are
transmitting and is pulled up to about seven and a
half volts when modules are transmitting.

The bus messages are transmitted at a rate

averaging 10800 bits per second. Since there is
only voltage present when the modules transmit
and the message length is only about 500 millisec-
onds, it is ineffective to try and measure the bus
activity with a conventional voltmeter. The pre-
ferred method is to use the DRBIII

t lab scope. The

12v square wave selection on the 20-volt scale
provides a good view of the bus activity. Voltage on
the bus should pulse between zero and about seven
and a half volts. Refer to the following illustration
for some typical displays.

GENERAL INFORMATION

The PCI Bus failure modes are broken down into

two categories. Complete PCI Bus Communication
Failure and individual module no response. Causes
of a complete PCI Bus Communication Failure
include a short to ground or battery on the PCI
circuit. Individual module no response can be
caused by an open circuit at the module, or an open
battery or ground circuit to the affected module.

Symptoms of a complete PCI Bus Communica-

tion Failure would include but are not limited to:

•

All gauges on the MIC stay at zero

•

All telltales on MIC illuminate

•

MIC backlighting at full intensity

•

No response received from any module on the
PCI Bus (except the PCM)

•

A possible no start (if equipped with SKREEM)

Symptoms of Individual module failure could

include any one or more of the above. The differ-
ence would be that at least one or more modules
would respond to the DRBIII

Diagnosis starts with symptom identification. If

a complete PCI Bus Communication Failure is
suspected, begin by identifying which modules the
vehicle is equipped with and then attempt to get a
response from the modules with the DRBIII

t. If

any modules are responding, the failure is not
related to the total bus, but can be caused by one or
more modules PCI circuit or power supply and
ground circuits. The DRBIII

t may display 9BUS +/-

SIGNAL OPEN

9 or 9NO RESPONSE9 to indicate a

communication problem. These same messages
will be displayed if the vehicle is not equipped with
that particular module. The CCD error message is
a default message used by the DRBIII

t and in no

way indicates whether or not the PCI Bus is
operational. The message is only an indication that
a module is either not responding or the vehicle is
not equipped.

3.7

DOOR AJAR SYSTEM

The driver door-ajar switch provides a switch

state input to the Driver Door Module (DDM). The
front passenger door ajar switch provides a switch
state input to the Passenger Door Module (PDM).
The left rear passenger door ajar switch, the right
rear passenger door ajar switch, and the liftgate
ajar switch provide switch state inputs to the Body
Control Module (BCM). The BCM and the door
modules use these inputs to determine the position
of each door and the liftgate. The DRBIII

t will

display the switch-state of each ajar switch in
Inputs/Outputs. It is important to note that the
DRBIII

t will display OPEN next to the switch

state of a door or liftgate that is closed, and
CLOSED next to the switch state of a door or
liftgate that is open. If the DRBIII

t displays

CLOSED when the respective door or liftgate is
closed, this indicates a shorted ajar circuit. If the
DRBIII

t displays OPEN when the respective door

or liftgate is open, this indicates an open ajar
circuit.

GENERAL INFORMATION

3.8

DOOR MODULES

A multiplexed Driver Door Module (DDM) is

located in the driver door. The DDM controls the
following features:

•

power door locks

•

automatic (rolling) door locks

•

driver front window and driver rear window,
including express down for both

•

a window lockout feature for all passenger power
windows

•

memory recall functions (radio, adjustable ped-
als, memory seats and driver mirror)

•

driver memory mirror

•

driver power mirror

•

driver heated mirror

•

door key cylinder disarm (driver door only)

•

door lock inhibit

•

switch learning features

•

central lock from the key cylinder (driver door
only)

•

central unlock from the key cylinder and auto
unlock on exit (driver door only)

A multiplexed Passenger Door Module (PDM) is

located in the front passenger door. The PDM
controls the following features:

•

power door locks

•

passenger front window and passenger rear win-
dow, including express down for both

•

passenger memory mirror

•

passenger power mirror

•

passenger heated mirror

Reduced wiring complexity is a key advantage of

using multiplexed door modules. These modules
are addressable with the DRBIII

t from the ’’Body’’

menu to facilitate faster and easier diagnosis. In
addition, the door nodes offer:

•

battery protection

•

door lock inhibit – this feature disables the door
lock functions if the key is in the ignition and
either front door is ajar. Pressing the RKE lock/
unlock button under these conditions will result
in normal lock/unlock activation.

3.8.1

POWER WINDOWS

The driver can control all of the power windows

from the Driver Door Module (DDM) while each
passenger can control their own power window
from the power window switch in their respective
door. The DDM also has a lockout switch that
prevents power window operation from the power

window switch in each passenger door. When in
lockout mode, the lockout switch illuminates in red
and each passenger window switch LED turns off
indicating the respective switch is inactive. An-
other feature allows power window operation to
continue from any power window switch for 45
seconds after turning off the ignition, but only if
the front doors remain closed. Still another power
window feature is the Express Down feature. This
feature works on all four windows and is activated
by pressing the power window switch into the
second detent. Once activated, the operator can
release the power window switch and the power
window will travel to the full open position. To stop
the Express Down feature, momentarily pull the
switch in the up direction.

When a rear seat passenger actuates a rear

power window switch, the respective door module,
DDM or PDM, receives a multiplex signal. In turn,
the door module supplies 12 volts and ground, in
the appropriate direction, to the up and down
window motor circuits of the respective rear door
power window.

3.8.2

POWER DOOR LOCKS

The power door locks operate:

•

From the front door lock switches.

•

From remote keyless entry.

•

From the auto (rolling) door lock feature.
This feature will lock all of the door locks, if all of
the doors are closed and the vehicle speed goes
above 15 mph (24 km/h).

•

From the auto unlock on exit feature.

This feature will unlock all of the door locks
when the vehicle is stopped, the transmission
is in neutral or park and the driver door is
opened.

•

From the central unlock from the key cylinder
feature.

This feature will unlock all of the door locks if
the operator turns the key cylinder toward
the front of the vehicle twice within 5 sec-
onds. The first time the operator turns the
key cylinder toward the front of the vehicle
the feature will unlock only the driver door
lock. If within 5 seconds the operator releases
the key cylinder and again turns it toward
the front of the vehicle all of the passenger
door locks will unlock.

•

From the central lock from the key cylinder
feature.

This feature will lock all of the door locks if the
operator turns the key cylinder toward the
rear of the vehicle. When either the Driver
Door Module (DDM) or the Passenger Door

GENERAL INFORMATION

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