2003 CHRYSLER CARAVAN glove box

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key battery octane warning immobilizer steering timing belt

Page 302 of 2177

CHRYSLER CARAVAN 2003 Service Manual TEST 2
Test 2 checks the antenna for an open circuit as
follows:
(1) Unplug the antenna coaxial cable connector
from the radio chassis. Remove the antenna mast.
(2) Connect an ohmmeter test lead to th

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CHRYSLER CARAVAN 2003 Service Manual (10) Remove antenna mast from antenna base
(Fig. 3).
(11) Using cap nut tool, remove cap nut holding
antenna base to front fender (Fig. 4).(12) Remove antenna base from under front
fender.
INSTALLATIO

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CHRYSLER CARAVAN 2003 Service Manual (1) Disconnect and isolate the battery negative
cable.
(2) Remove glove box (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - REMOVAL).
(3) Disconnect extension cable end from antenna
cable end.
(4)

(1) Disconnect and isolate the battery negative
cable.
(2) Remove glove box (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - REMOVAL).
(3) Disconnect extension cable end from antenna
cable end.
(4) Disconnect cable hanger clip from HVAC unit.
(5) Remove radio as necessary to gain access to
extension cable (Refer to 8 - ELECTRICAL/AUDIO/
RADIO - REMOVAL).
CAUTION: Pulling the antenna cable straight out of
the radio without pulling on the locking antenna
connector could damage the cable or radio.
(6) Disconnect the antenna cable by pulling the
locking antenna connector away from the radio (Fig.
8).
(7) Remove cable from vehicle.
INSTALLATION
(1) Install extension cable to vehicle.
(2) Connect extension cable to back of radio.
(3) Install radio (Refer to 8 - ELECTRICAL/AU-
DIO/RADIO - INSTALLATION).
(4) Connect cable hanger clip to HVAC unit.
(5) Connect extension cable end to antenna cable
end.
(6) Install glove box (Refer to 23 - BODY/INSTRU-
MENT PANEL/GLOVE BOX - INSTALLATION).
(7) Connect the battery negative cable.
QUARTER GLASS INTEGRAL
ANTENNA - EXPORT
DESCRIPTION
The quarter glass integral antenna element is
bonded to the right rear quarter glass and is replaced
with the glass assembly only (Fig. 9).
OPERATION
The integral antenna receives radio frequencies
and sends them to the antenna module for amplifica-
tion.
DIAGNOSIS AND TESTING - QUARTER GLASS
INTEGRAL ANTENNA - EXPORT
The antenna grid pattern is divided into two sepa-
rate patterns. Each terminal connects to a separate
grid pattern, one for AM and the other for FM.
For circuit descriptions and diagrams, refer to the
appropriate wiring information. The wiring informa-
tion includes wiring diagrams, proper wire and con-
nector repair procedures, details of wire harness
routing and retention, connector pin-out information
and location views for the various wire harness con-
nectors, splices and grounds. To detect breaks in the
integral antenna elements, the following procedure is
required:
(1) Disconnect the antenna module connector from
the antenna terminals on the glass.
(2) Using an ohmmeter, place a lead on one of the
terminals and check each end of the grid pattern con-
nected to this terminal for continuity. If continuity is
not present, move one lead through the grid in pro-
gression starting at the terminal with the other lead
on the terminal until continuity is lost. Repeat pro-
cedure for the other terminal. A break in the antenna
Fig. 8 ANTENNA TO RADIO
1 - RADIO
2 - LOCKING ANTENNA CONNECTOR
3 - INSTRUMENT PANEL ANTENNA CABLE
Fig. 9 QUARTER GLASS INTEGRAL ANTENNA
1 - REAR QUARTER GLASS
2 - ANTENNA
RSAUDIO8A-9
INSTRUMENT PANEL ANTENNA CABLE (Continued)
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Page 309 of 2177

CHRYSLER CARAVAN 2003 Service Manual motors, and fuel pumps that have been found to be
potential sources of RFI or EMI.
OPERATION
There are two common strategies that can be used
to suppress Radio Frequency Interference (RFI) and
Electro

motors, and fuel pumps that have been found to be
potential sources of RFI or EMI.
OPERATION
There are two common strategies that can be used
to suppress Radio Frequency Interference (RFI) and
ElectroMagnetic Interference (EMI) radio noise. The
first suppression strategy involves preventing the
production of RFI and EMI electromagnetic signals
at their sources. The second suppression strategy
involves preventing the reception of RFI and EMI
electromagnetic signals by the audio system compo-
nents.
The use of braided ground straps in key locations
is part of the RFI and EMI prevention strategy.
These ground straps ensure adequate ground paths,
particularly for high current components such as
many of those found in the starting, charging, igni-
tion, engine control and transmission control sys-
tems. An insufficient ground path for any of these
high current components may result in radio noise
caused by induced voltages created as the high cur-
rent seeks alternative ground paths through compo-
nents or circuits intended for use by, or in close
proximity to the audio system components or circuits.
Preventing the reception of RFI and EMI is accom-
plished by ensuring that the audio system compo-
nents are correctly installed in the vehicle. Loose,
corroded or improperly soldered wire harness connec-
tions, improperly routed wiring and inadequate audio
system component grounding can all contribute to
the reception of RFI and EMI. A properly grounded
antenna body and radio chassis, as well as a shielded
antenna coaxial cable with clean and tight connec-
tions will each help reduce the potential for reception
of RFI and EMI.
REMOTE SWITCHES
DESCRIPTION
A remote radio control switch option is available on
some models. Two rocker-type switches are mounted
on the back (instrument panel side) of the steering
wheel spokes (Fig. 12). The switch on the left spoke
is the seek switch and has seek up, seek down, and
preset station advance functions. The switch on the
right spoke is the volume control switch and has vol-
ume up, and volume down functions. The switch on
the right spoke also includes a ªmodeº control that
allows the driver to sequentially select AM radio, FM
radio, cassette player, CD player or CD changer (if
equipped).
OPERATION
These switches are resistor multiplexed units that
are hard-wired to the Body Control Module (BCM)
through the clockspring. The BCM sends the proper
messages on the Programmable Communications
Interface (PCI) data bus network to the radio
receiver. For diagnosis of the BCM or the PCI data
bus, the use of a DRB IIItscan tool and the proper
Diagnostic Procedures manual are recommended. For
more information on the operation of the remote
radio switch controls, refer to the owner's manual in
the vehicle glove box.
DIAGNOSIS AND TESTING - REMOTE
SWITCHES
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO ELECTRICAL, RESTRAINTS
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
Any diagnosis of the Audio system should
begin with the use of the DRB IIItdiagnostic
tool. For information on the use of the DRB
IIIt, refer to the appropriate Diagnostic Service
Manual.
Refer to the appropriate wiring information. The
wiring information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
Fig. 12 Remote Radio Switch Operational View
1 - PRESET SEEK
2 - SEEK UP
3 - VOLUME UP
4 - MODE
5 - VOLUME DOWN
6 - SEEK DOWN
8A - 12 AUDIORS
RADIO NOISE SUPPRESSION COMPONENTS (Continued)
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Page 341 of 2177

CHRYSLER CARAVAN 2003 Service Manual ²Battery Holddown- The battery holddown
hardware secures the battery in the battery tray in
the engine compartment.
²Battery Thermowrap- The battery thermow-
rap insulates the battery to protect it

²Battery Holddown- The battery holddown
hardware secures the battery in the battery tray in
the engine compartment.
²Battery Thermowrap- The battery thermow-
rap insulates the battery to protect it from engine
compartment temperature extremes.
²Battery Tray- The battery tray provides a
secure mounting location in the vehicle for the bat-
tery and an anchor point for the battery holddown
hardware.
For battery system maintenance schedules and
jump starting procedure, see the owner's manual in
the vehicle glove box. Optionally, refer to the Lubri-
cation and Maintenance section of this manual for
the recommended battery maintenance schedules and
for the proper battery jump starting procedure. While
battery charging can be considered a maintenance
procedure, the battery charging procedure and
related information are located later in this section of
this service manual. This was done because the bat-
tery must be fully-charged before any battery system
diagnosis or testing procedures can be performed.
OPERATION
The battery system is designed to provide a safe,
efficient, reliable and mobile means of delivering and
storing electrical energy. This electrical energy is
required to operate the engine starting system, as
well as to operate many of the other vehicle acces-
sory systems for limited durations while the engine
and/or the charging system are not operating. The
battery system is also designed to provide a reserve
of electrical energy to supplement the charging sys-
tem for short durations while the engine is running
and the electrical current demands of the vehicle
exceed the output of the charging system. In addition
to delivering, and storing electrical energy for the
vehicle, the battery system serves as a capacitor and
voltage stabilizer for the vehicle electrical system. It
absorbs most abnormal or transient voltages caused
by the switching of any of the electrical components
or circuits in the vehicle.
DIAGNOSIS AND TESTING - BATTERY SYSTEM
The battery, starting, and charging systems in the
vehicle operate with one another and must be tested
as a complete system. In order for the engine to start
and the battery to maintain its charge properly, all of
the components that are used in these systems must
perform within specifications. It is important that
the battery, starting, and charging systems be thor-
oughly tested and inspected any time a battery needs
to be charged or replaced. The cause of abnormal bat-
tery discharge, overcharging or early battery failure
must be diagnosed and corrected before a battery is
replaced and before a vehicle is returned to service.
The service information for these systems has been
separated within this service manual to make it eas-
ier to locate the specific information you are seeking.
However, when attempting to diagnose any of these
systems, it is important that you keep their interde-
pendency in mind.
The diagnostic procedures used for the battery,
starting, and charging systems include the most
basic conventional diagnostic methods, to the more
sophisticated On-Board Diagnostics (OBD) built into
the Powertrain Control Module (PCM). Use of an
induction-type milliampere ammeter, a volt/ohmme-
ter, a battery charger, a carbon pile rheostat (load
tester) and a 12-volt test lamp may be required. All
OBD-sensed systems are monitored by the PCM.
Each monitored circuit is assigned a Diagnostic Trou-
ble Code (DTC). The PCM will store a DTC in elec-
tronic memory for any failure it detects. Refer to
Charging System for the proper charging system on-
board diagnostic test procedures.
MICRO 420 BATTERY TESTER
The Micro 420 automotive battery system tester is
designed to help the dealership technicians diagnose
the cause of a defective battery. Follow the instruc-
tion manual supplied with the tester to properly
diagnose a vehicle. If the instruction manual is not
available refer to the standard procedure in this sec-
tion, which includes the directions for using the
Micro 420 battery tester.
8F - 2 BATTERY SYSTEMRS
BATTERY SYSTEM (Continued)
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Page 383 of 2177

CHRYSLER CARAVAN 2003 Service Manual Refer to the description of the heated seat switch
later in this section for additional information.
Hard wired circuitry connects the heated seat sys-
tem components to each other through the electri

Refer to the description of the heated seat switch
later in this section for additional information.
Hard wired circuitry connects the heated seat sys-
tem components to each other through the electrical
system of the vehicle. These hard wired circuits are
integral to several wire harnesses, which are routed
throughout the vehicle and retained by many differ-
ent methods. These circuits may be connected to each
other, to the vehicle electrical system and to the
heated seat system components through the use of a
combination of soldered splices and splice block con-
nectors. Refer to Wiring for complete system wiring
schematics. The wiring information also includes the
proper wire and connector repair procedures, further
details on wire harness routing and retention, as well
as pin-out and location views for the various wire
harness connectors, splices and grounds.
OPERATION
The heated seat system components operate on
battery current received through a fuse in the Inte-
grated Power Module (IPM) on a fused ignition
switch output (run) circuit so that the system will
only operate when the ignition switch is in the On
position. The heated seat system will be turned Off
automatically whenever the ignition switch is turned
to any position except On. Also, the heated seat sys-
tem will not operate when the surface temperature of
the seat cushion cover at either heated seat sensor is
above the designed temperature set points of the sys-
tem. See the owner's manual in the vehicle glove box
for more information on the features, use and opera-
tion of the heated seat system.
DIAGNOSIS AND TESTING - HEATED SEAT
SYSTEM
The most reliable, efficient, and accurate means to
diagnose the heated seat system requires the use of a
DRBIIItscan tool and the proper Diagnostic Proce-
dures manual. The DRBIIItscan tool can provide
confirmation that the PCI data bus is functional, that
all of the electronic modules are sending and receiv-
ing the proper messages on the PCI data bus, and
that the heated seat modules are receiving the
proper hard wired inputs from and relaying the
proper hard wired outputs to the Body Control Mod-
ule in order to perform its functions. Refer toWiring
Diagramsfor complete wiring schematics. The wir-
ing information also includes the proper wire and
connector repair procedures, further details on wire
harness routing and retention, as well as pin-out and
location views for the various wire harness connec-
tors, splices and grounds.
DRIVER HEATED SEAT
SWITCH
DESCRIPTION
The heated seat switches are mounted in the
instrument panel center bezel (Fig. 2). The two three-
position rocker-type switches, one switch for each
front seat, are incorporated into one large switch
assembly that also includes the hazard, rear window
wiper and washer switches. The heated seat switches
each provide a resistor multiplexed signal to its
respective Heated Seat Module (HSM) through sepa-
rate hard wired circuits. Each switch has an Off,
Low, and High position so that both the driver and
the front seat passenger can select a preferred seat
heating mode. Each switch has two Light-Emitting
Diodes (LED) which light to indicate that the heater
for the seat is turned on.
The heated seat switches and their LEDs cannot
be repaired. If either switch or LED is faulty or dam-
aged, the entire switch assembly must be replaced.
OPERATION
There are three positions that can be selected with
each of the heated seat switches: Off, Low, or High.
When the left side of the switch rocker is fully
depressed, the Low position is selected and the low
position LED indicator illuminates. When the right
side of the switch rocker is fully depressed, the High
position is selected and the high position LED indi-
Fig. 2 HEATED SEAT SWITCH LOCATION
1 - HEATED SEAT SWITCHES
8G - 8 HEATED SEAT SYSTEMRS
HEATED SEAT SYSTEM (Continued)
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Page 440 of 2177

CHRYSLER CARAVAN 2003 Service Manual LAMPS/LIGHTING - INTERIOR
TABLE OF CONTENTS
page page
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
INTERIOR LAMPS.....................25
CENTER CONSOLE LAMP SWITCH
REMOVAL.............................26
I

Page 441 of 2177

CHRYSLER CARAVAN 2003 Service Manual LAMP BULB
VOLTAGE INDICATOR LED
* VFD = VACUUM FLUORESCENT DISPLAY
CENTER CONSOLE LAMP
SWITCH
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Open console lid and remove tray.
(3) U

LAMP BULB
VOLTAGE INDICATOR LED
* VFD = VACUUM FLUORESCENT DISPLAY
CENTER CONSOLE LAMP
SWITCH
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Open console lid and remove tray.
(3) Using a flat bladed tool, pry up on the switch.
(4) Remove bulb from switch.
INSTALLATION
(1) Install bulb into switch.
(2) Push switch into console opening.
(3) Install tray and close lid.
(4) Connect battery negative cable.
CLUSTER ILLUMINATION
LAMPS
REMOVAL
(1) Remove the Instrument Cluster. Refer to Elec-
trical, Instrument Cluster, Removal.
(2) Turn over cluster and expose the illumination
bulb sockets.
(3) Identify which bulb is defective and twist it out
of the cluster using a counterclockwise motion.
INSTALLATION
(1) Install the new bulb socket into the cluster
using a clockwise motion.
(2) Install the Instrument Cluster. Refer to Electri-
cal, Instrument Cluster, Installation.
COURTESY LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Using a trim stick, pry lamp from door panel
(Fig. 1).
(3) Disconnect wire harness from the lamp.
(4) Remove lens from the lamp and remove bulb.
INSTALLATION
(1) Install bulb and lens to lamp.
(2) Reconnect wire harness to lamp.
(3) Press lamp into the door panel.(4) Reconnect battery negative cable.
DOME/CARGO LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Using a flat bladed tool, pry off the lamp lens.
(3) Remove bulb from lamp.
INSTALLATION
(1) Install bulb to lamp.
(2) Press lens into place.
(3) Connect battery negative cable.
GLOVE BOX LAMP SWITCH
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Open glove box door.
(3) Push switch through from behind (Fig. 2).
(4) Disconnect wire harness from switch.
(5) Pull bulb from switch.
INSTALLATION
(1) Push bulb into switch.
(2) Connect wire harness to switch.
(3) Push switch into instrument panel.
(4) Close glove box door.
(5) Reconnect the battery negative cable.
Fig. 1 COURTESY LAMP
1 - WIRE HARNESS
2 - COURTESY LAMP
8L - 26 LAMPS/LIGHTING - INTERIORRS
LAMPS/LIGHTING - INTERIOR (Continued)
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