Chrysler RG Voyager. Manual — part 8
1.0
INTRODUCTION
The procedures contained in this manual include
all the specifications, instructions and graphics
needed to diagnose 2005 body system problems. The
diagnostics in this manual are based on the failure
condition or symptom being present at the time of
diagnosis.
Please follow the recommendations below when
choosing your diagnostic path.
1. First make sure the DRBIII
t is communicating
with the appropriate modules; i.e., if the
DRBIII
t displays a “No Response” or a “Bus 6
Signals Open” condition, you must diagnose that
first.
2. Read DTC’s (diagnostic trouble codes) with the
DRBIII
t.
3. If no DTC’s are present, identify the customer
complaint.
4. Once the DTC or customer complaint is identi-
fied, locate the matching test in the Table of
Contents and begin to diagnose the symptom.
All component location views are in Section 8.0. All
connector pinouts are in Section 9.0. All schematics
are in Section 10.0. All Charts and Graphs are in
Section 11.0.
An * placed before the symptom description indi-
cated a customer complaint.
When repairs are required, refer to the appropri-
ate service information for the proper removal and
repair procedure.
Diagnostic procedures change every year. New
diagnostic systems may be added: carryover sys-
tems may be enhanced. READ THIS MANUAL
BEFORE TRYING TO DIAGNOSE A VEHICLE
DIAGNOSTIC TROUBLE CODE. It is recom-
mended that you review the entire manual to be-
come familiar with all the new and changed diag-
nostic procedures.
This book reflects many suggested changes from
readers of past issues. After using this book, if you
have any comments or suggestions, please fill out the
form in the back of this book and mail it back to us.
1.1
SYSTEM COVERAGE
This diagnostic procedures manual covers all
2005 Chrysler Town and Country, Chrysler Voyager
and Caravan vehicles. This diagnostic procedures
manual also covers both left hand drive (LHD) and
right hand drive (RHD) vehicles. There may be
some slight differences in the location views of
components. If the location views shown are on a
LHD vehicle, a RHD vehicle will be symmetrically
opposite.
1.2
SIX-STEP TROUBLESHOOTING
PROCEDURE
Diagnosis of the body system is done in six basic
steps:
•
verification of complaint
•
verification of any related symptoms
•
symptom analysis
•
problem isolation
•
repair of isolated problem
•
verification of proper operation
2.0
IDENTIFICATION OF
SYSTEM
The vehicle systems that are part of the “body”
system are:
•
Adjustable Pedal System (APS)
•
Airbag System
•
Audio
•
Automatic Temperature Control
•
Cabin Heater
•
Chime
•
Communication
•
Door Ajar System
•
Electrically heated system
•
Exterior lighting
•
Instrument Cluster
•
Interior Lighting
•
Manual Temperature Control
•
Memory Seat
•
Overhead Console
•
Park Assist
•
Power Door Lock/RKE
•
Power Folding Mirrors
•
Power Sliding Doors
•
Power Liftgate
•
Power windows
•
Telecommunications (hands free phone)
•
Tire Pressure Monitor System (TPMS)
•
Vehicle Theft Security System (VTSS)
•
Windshield Wiper and Washer
3.0
SYSTEM DESCRIPTION AND
FUNCTIONAL OPERATION
The body system on the 2005 RS and RG consists of
a combination of modules that communicate over the
1
GENERAL INFORMATION
PCI bus (Programmable Communication Interface
multiplex system). Through the PCI bus, information
about the operation of vehicle components and circuits
is relayed quickly to the appropriate modules. All
modules receive all the information transmitted on the
bus even though a module may not require all infor-
mation to perform its function. It will only respond to
messages “addressed” to it through binary coding
process. This method of data transmission signifi-
cantly reduces the complexity of the wiring in the
vehicle and the size of wiring harnesses. All of the
information about the functioning of all the systems is
organized, controlled, and communicated by the PCI
bus, which is described in the Communication Section
of this general information.
3.1
ADJUSTABLE PEDALS SYSTEM
The Adjustable Pedals are designed to enable the
fore and aft repositioning of the brake and acceler-
ator pedals. This results in improved ergonomics in
relation to the steering wheel for taller and shorter
drivers. Being able to adjust the pedal positions also
allows the driver to set steering wheel tilt and seat
positions to the most comfortable position available.
The positions can be adjusted without compromis-
ing safety or comfort in actuating the pedals. Repo-
sitioning the pedals does not change the effort
required for actuation. Changing of pedal position is
accomplished by means of a motor.
Operating the adjustable pedal switch activates
the pedal drive motor. The pedal drive motor
changes the position of the brake and accelerator
pedals. The pedal can move rearward or forward.
The pedals are moved to a position that is most
comfortable for the driver. The accelerator and
brake pedals are moved at the same rate to ensure
synchronization. Neither the motor nor mecha-
nisms are subject to mechanical stress of brake or
accelerator application.
The adjustable pedals feature is available on a
non-memory/memory-equipped vehicle. The non-
memory system consists of a mechanical switch
that allows pedal travel adjustment. The IPM con-
trols the Fused B+ circuit voltage to the adjustable
pedals switch through the adjustable pedals relay.
The circuit opens when the IPM detects an active
cruise control state or when the vehicle is in re-
verse. The adjustable pedals control switch is lo-
cated on the right side steering column shroud. The
switch is hardwired directly to the adjustable ped-
als motor. When the operator actuates the switch to
adjust the pedals, voltage is applied to the adjust-
able pedals motor allowing adjustment. The mem-
ory system, known as the Memory Seat Mirror
Adjustable Pedal Module (MSMAPM), is located
under the driver’s seat and controls the adjustable
pedals. The adjustable pedals control switch is
located on the right side steering column shroud.
The switch is hardwired directly to the MSMAPM.
When the operator actuates the switch to adjust the
pedals, the MSMAPM controls the adjustable ped-
als motor movement with input from the adjustable
pedals sensor. This sensor allows pedal adjustment
and memory functions to be recalled from the driver
door mounted memory buttons or the RKE trans-
mitters. The adjustable pedals will not operate
when in an active cruise control state or when the
vehicle is in reverse.
3.2
AIRBAG SYSTEM/OCCUPANT
RESTRAINT CONTROLLER SYSTEM
AND OCCUPANT CLASSIFICATION
SYSTEM
The Airbag System contains the following compo-
nents: Occupant Restraint Controller (ORC), Air-
bag Warning Indicator, Clockspring, Driver and
Passenger dual squib Airbags, Driver and Passen-
ger Seat belt Tensioner (SBT), Driver and Passen-
ger Hall-effect Seat Belt Buckle Switches (SBS),
Left and Right Side Curtain Airbags, and Front and
Side Impact Sensors. The ORC also monitors the
Occupant Classification System (OCS) for the pres-
ence of a passenger in the front outer seat.
The Occupant Classification System contains the
following
components:
Occupant
Classification
Module (OCM), Bladder and Sensor, Belt Tension
Sensor, and Passenger Airbag off Indicator. The
Occupant Restraint Controller (ORC) supports
staged airbag deployment and remote impact sens-
ing. Staged deployment is the ability to trigger
airbag system squib inflators individually as
needed to provide the appropriate restraint for the
severity of the impact. The ORC has four major
functions: PCI Bus communications, onboard diag-
nostics, impact sensing, and component deploy-
ment. The ORC also contains an energy-storage
capacitor. This capacitor stores enough electrical
energy to deploy the front airbag components for
two seconds following a battery disconnect or fail-
ure during an impact. The ORC is secured to the
floor panel transmission tunnel below the instru-
ment panel inside the vehicle. The ORC cannot be
repaired or adjusted. The ORC sends and/or re-
ceives PCI Bus messages with the Instrument Clus-
ter (MIC), Body Control Module (BCM), and Pow-
ertrain Control Module (PCM). Diagnostic trouble
codes will be set if the communication with these
modules is lost or contains invalid information. The
microprocessor in the ORC monitors the front im-
pact sensor signals and the airbag system electrical
circuits to determine the system readiness. If the
ORC detects a monitored system fault, it sends a
message to the instrument cluster via PCI bus to
2
GENERAL INFORMATION
turn on the Airbag Warning Indicator. The ORC can
set both active and stored diagnostic trouble codes
to aid in diagnosing system problems. See DIAG-
NOSTIC TROUBLE CODES in this section.
The ORC uses an internal accelerometer, two
front sensors and six side impact sensors, to sense
the rate of vehicle deceleration and provide verifi-
cation of the direction and severity of an impact. A
pre-programmed decision algorithm in the ORC
microprocessor determines when the deceleration
rate is severe enough to require airbag system
protection. The ORC also uses the driver and pas-
senger seat belt switch status (buckled or unbuck-
led) to determine the level of driver airbag deploy-
ment, low medium or high. When the programmed
conditions are met, the ORC sends an electrical
signal to deploy the appropriate airbag system
components.
WARNING:
THE AIRBAG
SYSTEM
IS A
SENSITIVE, COMPLEX ELECTROMECHANICAL
UNIT. BEFORE ATTEMPTING TO DIAGNOSE OR
SERVICE ANY AIRBAG SYSTEM OR RELATED
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT
PANEL
COMPONENTS
YOU
MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE. WAIT
TWO MINUTES FOR THE SYSTEM CAPACITOR
TO DISCHARGE BEFORE FURTHER SYSTEM
SERVICE. THIS IS THE ONLY SURE WAY TO
DISABLE THE AIRBAG SYSTEM. FAILURE TO
DO
THIS
CAN
RESULT
IS
ACCIDENTAL
AIRBAG
DEPLOYMENT
AND
POSSIBLE
PERSONAL INJURY OR DEATH.
WARNING: NEVER STRIKE OR KICK THE
OCCCUPANT RESTRAINT CONTROLLER, AS
IT CAN DAMAGE THE IMPACT SENSOR OR
AFFECT ITS CALIBRATION. IF AN AIRBAG
CONTROL
MODULE
IS
ACCIDENTALLY
DROPPED DURING SERVICE, THE MODULE
MUST BE SCRAPPED AND REPLACED WITH
A NEW
UNIT.
FAILURE
TO
TAKE
THE
PROPER PRECAUTIONS CAN RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND
PERSONAL INJURY OR DEATH.
The Airbag Warning Indicator is the only point at
which the customer can observe symptoms of a
system malfunction. Whenever the ignition key is
turned to the run or start position, the ORC per-
forms a lamp check by turning the Airbag Warning
Indicator on for 6-8 seconds. After the lamp check, if
the indicator turns off, it means that the ORC has
checked the system and found it to be free of
discernible malfunctions. If the lamp remains on,
there could be an active fault in the system or the
MIC lamp circuit may be internally shorted. If the
lamp comes on and stays on for a period longer than
6-8 seconds then goes off, there is usually an inter-
mittent problem in the system.
3.2.1
DRIVER AIRBAG
The airbag protective trim cover is the most
visible part of the driver side airbag system. The
protective trim cover is fitted to the front of the
airbag module and forms a decorative cover in the
center of the steering wheel. The module is
mounted directly to the steering wheel. Located
under the trim cover are the horn switch, the airbag
cushion, and the airbag cushion supporting compo-
nents. When supplied with the proper electrical
signal, the inflator or inflators discharge the gas
directly into the cushion. The airbag module cannot
be repaired, and must be replaced if deployed or in
any way damaged.
WARNING: THE DRIVER AIRBAG MODULE
CONTAINS ARGON GAS PRESSURIZED TO
OVER 17236.89 Kpa (2500 PSI). DO NOT
ATTEMPT
TO
DISMANTLE
AN
AIRBAG
MODULE OR TAMPER WITH ITS INFLATOR.
DO
NOT
PUNCTURE,
INCINERATE,
OR
BRING INTO CONTACT WITH ELECTRICITY.
DO
NOT
STORE
AT
TEMPERATURE
EXCEEDING 93°C (200°F). REPLACE AIRBAG
SYSTEM
COMPONENTS
ONLY
BUT
INTERNAL DIFFERENCES MAY RESULT IN
INFERIOR OCCUPANT PROTECTION. THE
FASTENERS,
SCREWS,
AND
BOLTS
ORIGINALLY
USED
FOR
THE
AIRBAG
SYSTEM
COMPONENTS
HAVE
SPECIAL
COATINGS
AND
ARE
SPECIFICALLY
DESIGNED FOR THE AIRBAG SYSTEM. THEY
MUST NEVER BE REPLACED WITH ANY
SUBSTITUTES. ANY TIME A NEW FASTENER
IS
NEEDED,
REPLACE
IT
WITH
THE
CORRECT FASTENERS PROVIDED IN THE
SERVICE PACKAGE OR SPECIFIED IN THE
MOPAR
PARTS
CATALOG.
FAILURE
TO
TAKE THE PROPER PRECAUTIONS CAN
RESULT
IN
ACCIDENTAL
AIRBAG
DEPLOYMENT AND PERSONAL INJURY OR
DEATH.
3
GENERAL INFORMATION
CAUTION: Deployed Front Air Bags may or
may not have live pyrotechnic material within
the air bag inflator. Do not dispose of Driver
and Passenger Airbags unless you are sure
of complete deployment. Please refer to the
Hazardous Substance Control System for
Proper Disposal. Dispose of deployed air
bags in a manner consistent with state,
provincial, local, and federal regulations. Use
the following table to identify the status of
the Airbag Squib.
AIRBAG SQUIB STATUS
(1) Using a DRBIII
t read Airbag DTC’s If the following active codes are present:
ACTIVE DTC
CONDITIONS
SQUIB STATUS
Driver Squib 1 open
Driver Squib 2 open
Check the stored DTC’s AND IF the stored min-
utes for both are within 15 minutes of each other.
Both Driver Squib 1
and 2 were used.
Driver Squib 1 open
Driver Squib 2 open
Check the stored DTC’s AND IF the stored min-
utes for Driver Squib 2 open is GREATER than
the stored minutes for Driver Squib 1 by 15 min-
utes or more.
Driver Squib 1 was
used;
Driver Squib 2 is live.
Driver Squib 1 open
Driver Squib 2 open
Check the stored DTC’s AND IF the stored min-
utes for Driver Squib 1 open is GREATER than
the stored minutes for Driver Squib 2 by 15 min-
utes or more.
Driver Squib 1 is live ;
Driver Squib 2 was
used.
If Driver Squib 1 open
AND IF Driver Squib 2 opens is NOT an active
code.
Driver Squib 1 was
used;
Driver Squib 2 is live.
If Driver Squib 2 open
AND IF Driver Squib 1 open is NOT an active
code.
Driver Squib 1 is live;
Driver Squib 2 was
used.
If neither of the following codes is an active code:
ACTIVE DTC
SQUIB STATUS
Driver squib 1 open
Status of Airbag is
Unknown.
Driver Squib 2 open
3.2.2
CLOCKSPRING
The clockspring is mounted on the steering col-
umn under the steering wheel. This assembly con-
sists of a plastic housing which contains a flat,
ribbon-like, electrically conductive tape that winds
and unwinds with the steering wheel rotation. The
clockspring is used to maintain a continuous elec-
trical circuit between the instrument panel wiring
and the driver airbag, the horn, and the vehicle
speed control switches if equipped. The clockspring
must be properly centered when it is reinstalled on
the steering column following any service proce-
dure, or it could be damaged. The clockspring can-
not be repaired and it must be replaced.
3.2.3
PASSENGER AIRBAG
The front passenger airbag is equipped with dual
stage squib inflators. When supplied with the
proper electrical signal the inflator or inflators
discharge the gas directly into the cushion. The
airbag module cannot be repaired, and must be
replaced if deployed or in any way damaged.
4
GENERAL INFORMATION
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