Chrysler RG Voyager. Manual — part 10
WARNING: IF THE OCCUPANT CLASSIFICATION
MODULE IS DROPPED AT ANY TIME, IT
MUST BE REPLACED. FAILURE TO TAKE
THE PROPER PRECAUTIONS CAN RESULT
IN ACCIDENTAL AIRBAG DEPLOYMENT AND
PERSONAL INJURY OR DEATH. TO AVOID
PERSONAL
INJURY
OR
DEATH
ON
VEHICLES EQUIPPED WITH THE OCCUPANT
CLASSIFICATION SYSTEM (OCS), ONLY THE
OCCUPANT
CLASSIFICATION
MODULE
(OCM) AND THE SEAT CUSHION TRIM MAY
BE SERVICED SEPARATELY. ALL OTHER
COMPONENTS OF THE PASSENGER SIDE
FRONT SEAT CUSHION ASSEMBLY MUST BE
SERVICED
ONLY
AS
A
COMPLETE
FACTORY-CALIBRATED, ASSEMBLED AND
TAMPER-EVIDENT SERVICE REPLACEMENT
PACKAGE. THIS PACKAGE INCLUDES THE
FRAME, SPRINGS, PAD, BLADDER AND
PRESSURE SENSOR, FOAM, WIRING AND A
CALIBRATED OCM. WHEN INSTALLING THIS
PACKAGE ALWAYS REPLACE ALL OF THE
EXISTING COMPONENTS WITH THE NEW
COMPONENTS AS A UNIT. DO NOT ATTEMPT
TO SEPARATE OR DISCONNECT ANY OF
THE
NEW
OCS
COMPONENTS
IN
THE
SERVICE REPLACEMENT PACKAGE FROM
EACH OTHER, AND DO NOT ATTEMPT TO
REUSE
ANY
OF
THE
REPLACED
COMPONENTS IN THIS OR ANY OTHER
VEHICLE. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN FAILURE
OF THE PASSENGER AIRBAG TO DEPLOY
WHEN
REQUIRED,
OR
IN
PASSENGER
AIRBAG
DEPLOYMENT
WHEN
NOT
REQUIRED.
3.2.9
SPECIAL TOOLS
Some airbag diagnostic tests will require the use
of special tools, airbag load tools, 8443 for testing
squib circuits and the Occupant Classification Seat
Weight Tool 9077. The load tools contain fixed
resistive loads, jumpers and adapters. The fixed
loads are connected to cables and mounted in a
storage case. The cables can be directly connected to
some airbag system connectors. Jumpers are used
to convert the load tool cable connectors to the other
airbag system connectors. The adapters are con-
nected to the module harness connector to open
shorting clips and protect the connector terminal
during testing. When using the load tool follow all of
the safety procedures in the service information for
disconnecting airbag system components. Inspect
the wiring, connector and terminals for damage or
misalignment. Substitute the airbag load tool in
place of a Driver or Passenger Airbag, curtain
airbag, clockspring, or seat belt tensioner (use a
jumper if needed). Then follow all of the safety
procedures in the service information for connecting
airbag system components. Read the module active
DTC’s. If the module reports NO ACTIVE DTC’s the
defective component has been removed from the
system and should be replaced. If the DTC is still
active, continue this process until all components in
the circuit have been tested. Then disconnect the
module
connector
and
connect
the
matching
adapter to the module connector. With all airbags
disconnected and the adapter installed the squib
wiring can be tested for open and shorted condi-
tions.
3.2.10
DIAGNOSTIC TROUBLE CODES
Airbag diagnostic trouble codes consist of active
and stored codes. If more than one code exists,
diagnostic priority should be given to the active
codes. Each diagnostic trouble code is diagnosed by
following a specific testing procedure. The diagnos-
tic test procedures contain step-by-step instructions
for determining the cause of the trouble codes. It is
not necessary to perform all of the tests in this book
to diagnose an individual code. Always begin by
reading the diagnostic trouble codes with the
DRBIII
t. This will direct you to the specific test(s)
that must be performed. In certain test procedures
within this manual, diagnostic trouble codes are
used as a diagnostic tool.
3.2.10.1
ACTIVE CODES
The code becomes active as soon as the malfunc-
tion is detected or key-on, whichever occurs first. An
active trouble code indicates an on-going malfunc-
tion. This means that the defect is currently there
every time the Occupant Restraint Controller
checks that circuit or component. It is impossible to
erase an active code. Active diagnostic trouble codes
for the airbag system are not permanent and will
change the moment the reason for the code is
corrected. With the exception of the warning lamp
trouble codes or malfunctions, when a malfunction
is detected, the airbag lamp remains lit for a mini-
mum of 12 seconds or as long as the malfunction is
present.
3.2.10.2
STORED CODES
Airbag codes are automatically stored in the
ORC’s memory as soon as the malfunction is de-
tected. A stored code indicates there was an active
code present at some time. When a trouble code
occurs, the Airbag Warning Indicator illuminates
for 12 seconds minimum (even if the problem ex-
isted for less than 12 seconds). Once the code is no
9
GENERAL INFORMATION
longer active, the time in minutes it was active, and
the number of times the ignition has been cycled
since the problem was last detected will be dis-
played. The minimum time shown for any code will
be one minute, even if the code was actually present
for less than one minute. Thus, the time shown for
a code that was present for two minutes 13 seconds,
for example, would be three minutes. If a malfunc-
tion is detected a diagnostic trouble code is stored
and will remain stored. When and if the malfunc-
tion ceases to exist, an ignition cycle count will be
initiated for that code. If the ignition cycle count
reaches 100 without a reoccurrence of the same
malfunction, the diagnostic trouble code is erased
and that ignition cycle counter is reset to zero. The
ignition cycle counter will be reset and diagnostic
trouble code will continue to be a stored code, If the
malfunction reoccurs before the count reaches 100.
If a malfunction is not active while performing a
diagnostic test procedure, the active code diagnostic
test will not locate the source of the problem. In this
case, the stored code can indicate an area to inspect.
Maintain a safe distance from all airbags while
performing the following inspection. If no obvious
problems are found, erase stored codes, and with
the ignition on wiggle the wire harness and connec-
tors, rotate the steering wheel from stop to stop.
Recheck for codes periodically as you work through
the system. This procedure may uncover a malfunc-
tion that is difficult to locate.
3.3
AUDIO SYSTEM
Some of the radios are on the PCI Bus system.
The PCI Bus inputs into the radio are used for VF
dimming, remote steering wheel controls and cabin
EQ preference. PCI Bus outputs from the radio are
used for the Name Brand Speaker (NBS) relay
activation, as well as cabin EQ preference.
The radios have the capability of containing mul-
tiple vehicle unique equalization curves (cabin EQ
preferences) within the radio. These curves will
reside in the radio’s flash memory. The radio is
capable of storing up to 20 unique equalization
curves. The latent curves can be selected via the
Front Control Module transmitting a PCI Bus mes-
sage to the radio in response to a radio request for
equalization message. Upon receipt of a valid equal-
ization select message response, the radio will
switch to output the corresponding equalization
curve.
All the radios are capable of displaying faults and
allowing certain actuation tests through the use of
the DRBIII
t. When attempting to perform PCI Bus
diagnostics, the first step is to identify the radio in
use in the vehicle.
When trouble shooting output shorts or “output”
error messages, the following applies:
On radios without an external amplifier, the term
output refers to the path between the radio and the
speaker. This type of circuit can be monitored all
the way through the speaker connections by the
radio assembly. When the radio displays a shorted
output DTC with this type of system, the speaker,
radio, or wiring could be at fault.
On radios with an external amplifier, the term
“output” refers to the circuit between the radio
connector and the amplifier. The radio is capable of
monitoring only this portion and can tell nothing
about the circuit between the amplifier and the
speakers. Consequently, a shorted output DTC on
this type of system would only refer to this circuit.
A faulty speaker could not cause this DTC.
3.3.1
NAVIGATION RADIO
The optional navigation radio system receives
GPS signals from up to eight satellites to display
the position and direction of the vehicle. Map infor-
mation is supplied through a DVD-ROM. An elec-
tronic gyrosensor and the vehicle’s speed sensor
enable the system to display the present vehicle
position even in locations where GPS signals may
be blocked.
When a destination is selected, the navigation
system uses information from the map to quickly
calculate a route. As the vehicle is driven along the
chosen route, the operator is guided with pictorial
displays and voice prompts. For complete operating
instructions, refer to the manual included with the
vehicle.
3.3.2
REMOTE RADIO CONTROLS
These radios can be controlled via remote radio
switches (optional). These switches are located on
the back side of the steering wheel. They control
mode, preset, seek up, seek down, volume up and
volume down functions.
These functions are inputs to the Body Control
Module and can be read with the DRBIII
t under
“body computer”. The switches are a multiplexed
signal to the BCM. The radio control MUX circuit is
a 5 volt line that is pulled to ground through
different value resistors built into the switches.
This causes a voltage drop to be seen by the BCM
and it sends a specific message to the radio on the
PCI Bus circuit. The radio then responses to the
message.
This circuit is fairly simple to troubleshoot. The
circuit must be complete from the switches in the
steering wheel to the BCM. The ground must be
complete so that the switches can cause the voltage
drop for the BCM to see. The circuit passes through
the clockspring so continuity through this devise
must be verified.
10
GENERAL INFORMATION
3.3.3
CD CHANGER
The new in-dash CD Changer is designed to fit
into the existing cubby bin in the center stack. This
new cartridge-less CD Changer is controlled by
your radio, and allows you to individually load up to
four discs at a time. However, due to its compact
design, the CD Changer can only carry out one
operation at a time. For example, you can not load
a new disc while playing another at the same time.
Each operation happens sequentially.
The radio unit installed with your system pro-
vides control over all features of the CD Changer
with the exception of the CD load and eject func-
tions, which are controlled by buttons located on the
front of the CD Changer. The radio also supplies the
power, ground, PCI Bus, left and right speaker
output through a single DIN cable. All features you
would expect, such as Disc Up/Down, Track Up/
Down, Random and Scan are controlled by the
radio, which also displays all relevant CD Changer
information on the radio display.
The CD Changer contains a Load/Eject button
and an indicator light for each of the four disc
positions. The individual light indicates whether a
CD is currently loaded in that particular chamber of
the CD Changer. Pressing the individual Load/Eject
button for a particular chamber will eject a disc
currently present in that chamber. If the chamber is
currently empty, actuating the Load/Eject button
will position that chamber to receive and load a new
disc in that chamber.
3.3.4
DVD/CD CHANGER
The DVD/CD Changer (if equipped) is located in
the instrument panel below the radio. The DVD/CD
Changer can hold one DVD at a time. Three RCA
jacks on the front of the unit will allow the use of
MP3 players, video systems or camcorders.
3.4
BODY CONTROL MODULE
The body control module (BCM) supplies vehicle
occupants with visual and audible information and
controls various vehicle functions. To provide and
receive information, the module is interfaced to the
vehicle’s serial bus communications network (PCI).
This network consists of the powertrain control
module (PCM), the engine control module (ECM)
diesel, the mechanical instrument cluster (MIC),
the front control module (FCM), the occupant re-
straint controller (ORC), the occupant classification
module (OCM), the overhead console, the ABS mod-
ule, the hands free module (HFM), the park assist
module, the HVAC control module (ATC & MTC),
the power sliding door (Left & Right) modules
(PSD), the power liftgate module (PLG), the Audio
system (which includes the Radio, DVD, CD
Changer and Amplifier), the memory seat/mirror/
adjustable pedals module (MSMAPM), the RKE/
thatcham alarm module (export), the transmission
control module (Diesel only) and the sentry key
remote entry module (SKREEM). The BCM is op-
erational when battery power is supplied to the
module.
The body control module provides the following
features:
•
Power Door Locks
•
Automatic Door Lock
•
Door Lock Inhibit
•
Central Locking (with VTSS Only)
•
Battery Protection
•
The BCM will automatically turn off all exterior
lamps after 3 minutes and all interior lamps after
15 minutes after the ignition is turned off, if they
are not turned off by the driver.
•
Chime Driver
•
Compass/Minitrip Support
•
Interior Lighting (Courtesy/Reading Lamps)
•
BCM Diagnostic Reporting
•
Electronic Liftgate Release (with Power Door
Locks)
•
Exterior Lighting
•
Headlamp Time Delay (with/without Autohead-
lamps)
•
Automatic Headlamps (with electrochromatic
mirror)
•
Illuminated Entry
•
Fade to Off
This feature dims the interior lighting (courtesy
lamps) gradually if the BCM does not receive any
new inputs that would cause the interior lamps to
remain on.
•
PWM Instrument Panel Dimming
•
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, result in normal lock/unlock activation.
•
Power Sliding Door Switch Inputs
The BCM has 4 switch inputs for the power
sliding door feature: Located in the overhead con-
sole are the Left and Right side sliding door
switches to activate either or both sliding doors
under the proper conditions. Also there are B-Pillar
switches located on the Left and Right B-pillar
posts.
11
GENERAL INFORMATION
•
Power Liftgate Switch Input
The BCM has 1 Liftgate switch input located in
the overhead console
•
Power Lockout Switch Input
The BCM has 1 Lockout switch that when en-
abled will disable the B-Pillar sliding door switches
from activating either sliding door when depressed.
When replacing a body control module there are 2
modules available, a Base and a Midline. The
Midline controller is used on vehicles that have
Power Door Locks. If a vehicle is equipped with the
Vehicle Theft Security System, the midline control-
ler becomes a premium when the theft feature is
enabled.
NOTE: Do not swap the body control module
between vehicles or body control modules
off the shelf.
Engineering does not recommend that service,
dealers or the plant swap Body Control Modules
(BCM) between vehicles or off the shelf. The BCM
has internal diagnostic capability that assists in
diagnosing the system. When an “Open” or a
“Short” circuit exists, the diagnostic tool can be
used to read the BCM codes. The codes are very
descriptive in identifying the appropriate feature
that has faulted. The BCM also learns what fea-
tures are on the vehicle and if modules are swapped
the BCM could set false DTCs based on what it
learned.
3.5
CHIME WARNING SYSTEM
The
BCM
monitors
the
door/liftgate
ajar
switches, multifunction switches, headlight switch,
ignition switch, PCI bus, and the diagnostic tool to
perform various chime operations. The BCM uses a
low-side driver to control the chime located in the
cluster.
The chime system provides the Driver with warn-
ing chimes for:
•
Seat belt
•
Exterior lights on
•
Key-in Ignition
•
Key-in Accessory
•
Engine temperature critical
•
Low washer fluid
•
Turn signals on
•
Dome light on
•
Low oil pressure
•
Any warning lamp announcement
•
High-speed warning Gulf Coast Countries (GCC)
only
The output sound intensity of the chime is ap-
proximately 72 decibels.
3.5.1
CHIME PRIORITY
The following list indicates the priority of the
chime when more than one chime is active at the
same time:
•
Seat belt warning
•
High-speed warning Gulf Coast Countries (GCC)
only
•
Turn signal on
•
Chime request
•
Warning lamp announcement
The cluster is responsible to set priority on all
warning lamp announcement chimes.
3.5.2
CHIME ON CONDITIONS
The following is a list of the chime warnings and
when they will sound.
Driver’s Seat
belt Unbuckled:
Sounds for approximately 6
62
seconds when the igntion is turned
on and driver’s seat belt is not
buckled, as a reminder to the
driver to buckle the seat belt.
Exterior Lights
On:
Ignition is in the lock position,
the driver door is ajar, and the
headlight switch is left in any
position, other than auto or off.
The chime will sound as a warn-
ing to the driver until one of the
above conditions is removed or
until the battery protection time
of 3 minutes has expired.
Key-In Ignition: Ignition is in the lock position,
driver door is ajar and the key is
in the ignition. The chime will
sound until one of the above con-
ditions is removed or until the
battery protection time of 15 min-
utes has expired.
Turn Signal On: When the BCM detects a turn
signal input continuously for
1.0mile/0.6km and the vehicle speed
is greater than 15 mph/24kph, the
chime will sound until the specific
turn signal is cancelled.
Dome Lights On: Ignition is in the lock position,
driver door ajar, and the dome
light switch is left in the on
position. The chime will sound
until one of the above conditions
is removed or until the battery
protection time of 15 minutes has
expired.
12
GENERAL INFORMATION
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