ECU CHRYSLER CARAVAN 2005 Service Manual

When the ignition switch is moved to the RUN
position, the SKREEM transmits an Radio Frequency
(RF) signal to the transponder in the ignition key.
The SKREEM then waits for a response RF signal
from the transponder in the key. If the response
received identifies the key as valid, the SKREEM
sends a9valid key9message to the Powertrain Con-
trol Module (PCM) over the Programmable Commu-
nication Interface (PCI) data bus. If the response
received identifies the key as invalid or no response
is received from the transponder in the ignition key,
the SKREEM sends an9invalid key9message to the
PCM. The PCM will enable or disable engine opera-
tion based upon the status of the SKREEM mes-
sages. It is important to note that the default
condition in the PCM is9invalid key.9Therefore, if no
response is received by the PCM, the engine will be
immobilized after two (2) seconds of running.
The SKREEM also sends indicator light status
messages to the Mechanical Instrument Cluster
(MIC) to operate the light. This is the method used to
turn the light ON solid or to flash it after the indi-
cator light test is complete to signify a fault in the
SKREES. If the light comes ON and stays ON solid
after the indicator light test, this signifies that the
SKREEM has detected a system malfunction and/or
that the SKREES has become inoperative. If the
SKREEM detects an invalid keyORa key-related
fault exists, the indicator light will flash following
the indicator light test. The SKREEM may also
request an audible chime if the customer key pro-
gramming feature is available and the procedure is
being utilized (Refer to 8 - ELECTRICAL/VEHICLE
THEFT SECURITY/TRANSPONDER KEY - STAN-
DARD PROCEDURE).
REMOTE KEYLESS ENTRY (RKE)
After pressing the lock button on the RKE trans-
mitter, all of the door locks will lock, the illuminated
entry will turn off (providing all doors are closed),
and the VTSS (if equipped) will arm. After pressing
the unlock button, on the RKE transmitter, one time,
the driver door lock will unlock, the illuminated
entry will turn on the courtesy lamps, and the VTSS
(if equipped) will disarm. After pressing the unlock
button a second time, the remaining door locks will
unlock. The Electronic Vehicle Information Center
(EVIC) or the DRBIIItscan tool can reprogram this
feature to unlock all of the door locks with one press
of the unlock button. If the vehicle is equipped with
the memory system, the memory message will iden-
tify which transmitter (1 or 2) sent the signal.The SKREEM is capable of retaining up to 8 indi-
vidual access codes (8 transmitters). If the PRNDL is
in any position except park, the SKREEM will dis-
able the RKE. The 4 button transmitter uses
1-CR2032 battery. The minimum battery life is
approximately 4.7 years based on 20 transmissions a
day at 84ÉF (25ÉC). Use the DRBIIItscan tool or the
Miller Tool 9001 RF Detector to test the RKE trans-
mitter. Use the DRBIIItor the customer program-
ming method to program the RKE system. However,
the SKREEM will only allow RKE programming
when the ignition is in the ON position, the PRNDL
is in park position, and the VTSS (if equipped) is dis-
armed.
TIRE PRESSURE MONITORING (TPM)
The SKREEM monitors the signals from the tire
pressure sensor/transmitters and determines if any
tire has gone below the low pressure threshold LOW
TIRE PRESSURE THRESHOLDS table.
LOW TIRE PRESSURE THRESHOLDS
SYSTEM STATUS
INDICATORTIRE PRESSURE
ON 193 kPa (28 PSI)
OFF 227 kPa (33 PSI)
CRITICAL AND NON-CRITICAL SYSTEM ALERTS
CRITICAL:A critical alert will be triggered when
a tire pressure has gone below a set threshold pres-
sure. The EVIC display will display ªX TIRE(S) LOW
PRESSUREº. ªXº will be the number of tires report-
ing low pressure. The message will display for the
duration of the current ignition cycle or until an
EVIC button is pressed. If the display is removed
without correcting the condition, it will reappear 300
seconds to warn the driver of the low pressure condi-
tion.
NON-CRITICAL:A non-critical alert will be trig-
gered when no signal is received from a sensor/trans-
mitter. The EVIC display in the cluster will display
ªSERVICE TIRE SYSTEM SOON.º
DIAGNOSIS AND TESTING - SENTRY KEY
REMOTE ENTRY MODULE
For proper diagnosis and testing of the Sentry Key
Remote Entry Module (SKREEM), use a DRBllltand
refer to the proper Body Diagnostic Procedures infor-
mation.
RSVEHICLE THEFT SECURITY8Q-5
SENTRY KEY REMOTE ENTRY MODULE (Continued)

REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the Steering Column Opening Cover
(Refer to 23 - BODY/INSTRUMENT PANEL/STEER-
ING COLUMN OPENING COVER - REMOVAL).
(3) Remove the steering column upper and lower
shrouds (Refer to 19 - STEERING/COLUMN/UPPER
SHROUD - REMOVAL) and (Refer to 19 - STEER-
ING/COLUMN/LOWER SHROUD - REMOVAL).
(4) Disengage the steering column wire harness
from the Sentry Key Remote Entry Module
(SKREEM).
(5) Remove the one screws securing the SKREEM
to the steering column.
(6) Rotate the SKREEM upwards and then to the
side away from the steering column to slide the
SKREEM antenna ring from around the ignition
switch lock cylinder housing.
(7) Remove the SKREEM from the vehicle.
INSTALLATION
(1) Slip the Sentry Key Remote Entry Module
(SKREEM) antenna ring around the ignition switch
lock cylinder housing. Rotate the SKREEM down-
wards and then towards the steering column.
(2) Install the one screws securing the SKREEM to
the steering column.
(3) Connect the steering column wire harness to
the SKREEM.
(4) Install the steering column upper and lower
shrouds (Refer to 19 - STEERING/COLUMN/UPPER
SHROUD - INSTALLATION) and (Refer to 19 -
STEERING/COLUMN/LOWER SHROUD - INSTAL-
LATION).
(5) Install the Steering Column Opening Cover
(Refer to 23 - BODY/INSTRUMENT PANEL/STEER-
ING COLUMN OPENING COVER - INSTALLA-
TION)
(6) Connect the battery negative cable.
TRANSPONDER KEY
DESCRIPTION
The Sentry Key Remote Entry System (SKREES)
uses a transponder chip that is integral to the circuit
board of the integrated ignition key (SKREES and
RKE incorporated) to communicate with the Sentry
Key Remote Entry Module (SKREEM). Ignition keys
are supplied with the vehicle when it is shipped from
the factory.
For export vehicles equipped with SKREES, the
transponder chip is undermolded within the head of
the key.
OPERATION
Each Sentry Key has a unique transponder identi-
fication code permanently programmed into it by the
manufacturer. Likewise, the Sentry Key Remote
Entry Module (SKREEM) has a unique9Secret Key9
code programmed into it by the manufacturer as
well. When a Sentry Key is programmed into the
memory of the SKREEM, the SKREEM stores the
transponder identification code from the Sentry Key,
and the Sentry Key learns the9Secret Key9code from
the SKREEM. Once the Sentry Key learns the
9Secret Key9code of the SKREEM, it is also perma-
nently programmed into the transponder's memory.
Therefore, blank keys for the Sentry Key Remote
Entry System (SKREES) must be programmed by
the SKREEM in addition to being cut to match the
mechanical coding of the ignition lock cylinder. Refer
to Electrical, Vehicle Theft Security, Transponder
Key, Standard Procedure - Transponder Program-
ming.
The Sentry Key's transponder is within the range
of the SKREEM's transceiver antenna ring when it is
inserted into the ignition lock cylinder. When the
ignition switch is turned to the ON position, the
SKREEM communicates with the Sentry Key via a
radio frequency (RF) signal. The SKREEM deter-
mines if a valid key is present based on the informa-
tion it receives from the Sentry Key. If a valid key is
detected, that fact is communicated to the PCM via
the PCI bus and the vehicle is allowed to continue
running. If an invalid key is received by the PCM or
no status at all is communicated, the vehicle will
stall after two (2) seconds of running. The indicator
light will be flashing at this point. The Sentry Key's
transponder can not be repaired. If it is faulty or
damaged, it must be replaced.
Common communication problems:
²Two transponder keys too close together.
²Speed Pass too close to transponder key.
Solid indicator that there is a system failure.
²Loss of PCM communication.
²Failed antenna circuit.
STANDARD PROCEDURE - TRANSPONDER
PROGRAMMING
USING A DRBIIITSCAN TOOL
All Sentry Keys included with the vehicle are pre-
programmed to work with the Sentry Key Remote
Entry System (SKREES) when it is shipped from the
factory. The Sentry Key Remote Entry Module
(SKREEM) can be programmed to recognize up to a
total of eight Sentry Keys. When programming a
blank Sentry Key transponder, the key must first be
cut to match the ignition lock cylinder of the vehicle
for which it will be used. The vehicle's four digit PIN
8Q - 6 VEHICLE THEFT SECURITYRS
SENTRY KEY REMOTE ENTRY MODULE (Continued)

code will be required to complete this task since you
will need it to enter the Secured Access Mode in the
SKREEM. The following steps must be completed
using a DRBIIItscan tool:
(1) Insert the blank key into the ignition and turn
it to the RUN position.
(2) Using a DRBIIItscan tool, select9Theft
Alarm,99SKREEM,99Miscellaneous,9and then9Pro-
gram New Key.9
(3) Enter the four digit PIN code using the
DRBIIItscan tool. When programming is completed,
the SKREEM will exit Secured Access Mode and the
DRBIIItscan tool will display the results of your
attempt to program the key. One of five distinct
results may be displayed. All five are listed below:
²(Programming Successful(is displayed if the
Sentry Key programming is successful.
²(Learned Key in Ignition(is displayed if the
key in the ignition has already been programmed
into that vehicle's SKREEM.
²(Eight Keys Already Learned (At The Maxi-
mum) Programming Not Done(is displayed if
eight keys have already been programmed into the
SKREEM. In this case, if a new key needs to be
added due to a lost or defective key, the9Erase All
Keys9command (which requires entering the Secured
Access Mode) has to be performed. Following the
9Erase All Keys9command, all keys that will be used
to operate the vehicleMUSTbe reprogrammed to
the SKREEM.
²(Programming Not Attempted(is displayed
after an9Erase All Keys9function is executed.
²(Programming Key Failed(is displayed if fur-
ther diagnosis is required.
To learn additional keys, turn the ignition OFF,
remove the learned key, insert the next new blank
key, and repeat the steps from the beginning.
ªCUSTOMER LEARNº MODE
This feature is only available on domestic vehicles
or those which have a U.S. country code designator.
This procedure requires access to at least two valid
Sentry Keys. If two valid Sentry Keys are not avail-
able, Sentry Key programming will require the use of
a DRBIIItscan tool.
The steps required to program Sentry Keys with
two valid Sentry Keys follows:
(1) Obtain the blank Sentry Key(s) that need to be
programmed. Cut the keys to match the ignition lock
cylinder mechanical key codes.
(2) Insert one of the two valid Sentry Keys into the
ignition switch and turn the ignition switch to the
ON position.
(3) After the ignition switch has been in the ON
position for longer than three seconds, but no more
than fifteen seconds, cycle the ignition switch back tothe OFF position. Replace the first valid Sentry Key
in the ignition lock cylinder with the second valid
Sentry Key and turn the ignition switch back to the
ON position. The second valid Sentry Key must be
inserted within 15 seconds of removing the first valid
Sentry key.
(4) About ten seconds after the completion of Step
3, the indicator light will start to flash and a single
audible chime tone will sound to indicate that the
system has entered the9Customer Learn9program-
ming mode.
(5) Within sixty seconds of entering the9Customer
Learn9programming mode, turn the ignition switch
to the OFF position, replace the valid Sentry Key
with a blank Sentry Key transponder, and turn the
ignition switch back to the ON position.
(6) About ten seconds after the completion of Step
5, a single audible chime tone will sound and the
indicator light will stop flashing and stay on solid for
three seconds and then turn off to indicate that the
blank Sentry Key has been successfully programmed.
The SKREES will immediately exit the9Customer
Learn9programming mode and the vehicle may be
started using the newly programmed Sentry Key.
NOTE: The Remote Keyless Entry (RKE) Transmitter
will also be programmed during this procedure.
These steps must be completed in their entirety for
each additional Sentry Key to be programmed. If any
of the above steps are not completed in the given
sequence, or within the allotted time, the SKREES
will exit the9Customer Learn9programming mode
and the programming will be unsuccessful. The
SKREES will also automatically exit the9Customer
Learn9programming mode if:
²It sees a non-blank Sentry Key when it should
see a blank.
²If it has already programmed four (4) valid Sen-
try Keys.
²If the ignition switch is turned to the OFF posi-
tion for more than about fifty (50) seconds.
NOTE: If you attempt to start the vehicle while in
ªCustomer Learnº mode (LED flashing), the vehicle
will behave as though an invalid key is being used
(i.e. the engine will stall after two (2) seconds of
running). No faults will be logged.
NOTE: Once a Sentry Key has been programmed to
a particular vehicle, it cannot be used on any other
vehicle.
RSVEHICLE THEFT SECURITY8Q-7
TRANSPONDER KEY (Continued)

VTSS/SKIS INDICATOR LAMP
DESCRIPTION
The Sentry Key Remote Entry System (SKREES)
uses an indicator light to convey information on the
status of the system to the customer. This light is
shared with the Vehicle Theft Security System
(VTSS). The light is located in the Mechanical
Instrument Cluster (MIC). The VTSS status is con-
trolled by the Body Control Module (BCM), via Pro-
grammable Communication Interface (PCI) data bus
communication with the MIC, based upon messages
it receives from the Sentry Key Remote Entry Mod-
ule (SKREEM) on the PCI data bus.
OPERATION
The Mechanical Instrument Cluster (MIC) per-
forms a four second bulb check via PCI communica-
tion with the Sentry Key Remote Entry Module
(SKREEM). After the bulb check, the lamp is con-
trolled according to SKREEM messages. Then, the
SKREEM sends messages to the BCM to operate thelight based upon the results of the Sentry Key
Remote Entry System (SKREES) self tests. The light
may be actuated in two possible ways, flashing or on
solid. If the light comes on and stays on solid after a
power-up test, this indicates that the SKREEM has
detected a system malfunction. If the SKREEM
detects an invalid key when the ignition switch is
moved to the ON position, it sends a message on the
PCI bus to the MIC, to flash the light. The SKREEM
can also send a message to flash the light and gen-
erate a single audible chime at the same time. These
two events occurring simultaneously indicate that
the SKIS has been placed into the9Customer Learn9
mode (Refer to 8 - ELECTRICAL/VEHICLE THEFT
SECURITY/TRANSPONDER KEY - STANDARD
PROCEDURE). If the light comes on and stays on
after the power-up test, diagnosis of the SKREES
should be performed using a DRBIIItscan tool and
the appropriate Body Diagnostic Procedures informa-
tion. The light is a Light Emitting Diode (LED) and
is not a serviceable component.
8Q - 8 VEHICLE THEFT SECURITYRS

(7) Disconnect the wire connectors from back of
the wiper motor.
INSTALLATION
(1) Connect the wire harness connector.
(2) Install the linkage on the wiper unit.
(3) Install the nut holding the linkage to the wiper
unit.
(4) Install the cowl cover brackets to the wiper
nut.
(5) Install the front wiper unit (Refer to 8 - ELEC-
TRICAL/WIPERS/WASHERS/WIPER MODULE -
INSTALLATION).
(6) Install the cowl cover.
(7) Install the wiper arms and blades.
WIPER MODULE
REMOVAL
(1) Release the hood latch and open hood.
(2) Disconnect and isolate the battery negative
cable.
(3) Remove the wiper arms.
(4) Remove the cowl cover (Refer to 23 - BODY/
EXTERIOR/COWL GRILLE - REMOVAL).
(5) Disconnect the positive lock on the wiper mod-
ule wire connector (Fig. 7).
(6) Disconnect the wiper module wire connector
from the engine compartment wire harness.
(7) Disconnect the windshield washer hose from
coupling outside the module.
(8) Disconnect the drain tubes from nipples on bot-
tom of the wiper module.(9) Remove nuts holding wiper module to lower
windshield fence.
(10) Remove bolts holding the wiper module to the
dash panel (Fig. 8).
(11) Lift wiper module from weld-studs on lower
windshield fence.
CAUTION: Do not allow wiper module to rest on
brake master cylinder reservoir, damage to brake
system can result.
(12) Remove wiper module.
INSTALLATION
(1) Position the wiper module into the cowl.
(2) Install the bolts that secure the wiper module
to the dash (Fig. 8).
(3) Install the nuts that retain the wiper module.
(4) Connect the drain tubes to the nipples on the
wiper module.
(5) Connect the windshield washer tube.
(6) Connect the wire harness connector to the
wiper module (Fig. 8).
(7) Connect the positive lock on the wiper module
wire connector (Fig. 7).
CAUTION: Do not allow wiper module to rest on
brake master cylinder reservoir, damage to brake
system can result.
(8) Install the cowl cover (Refer to 23 - BODY/EX-
TERIOR/COWL GRILLE - INSTALLATION).
(9) Install the wiper arms and blades.
(10) Connect the battery negative cable.
(11) Close the hood.
Fig. 7 WIPER MODULE WIRE CONNECTOR
1 - WIPER SYSTEM WIRE CONNECTOR
2 - LOCK TAB
3 - POSITIVE LOCK
4 - WIPER MODULE
Fig. 8 WIPER MODULE
1 - BOLT
2 - NUTS
3 - BOLT
4 - WIPER MODULE
5 - WINDSHIELD
8R - 14 WIPERS/WASHERSRS
WIPER LINKAGE (Continued)

WIRING
TABLE OF CONTENTS
page page
WIRING DIAGRAM INFORMATION....... 8W-01-1
COMPONENT INDEX.................. 8W-02-1
POWER DISTRIBUTION............... 8W-10-1
GROUND DISTRIBUTION.............. 8W-15-1
BUS COMMUNICATIONS.............. 8W-18-1
CHARGING SYSTEM.................. 8W-20-1
STARTING SYSTEM.................. 8W-21-1
FUEL/IGNITION SYSTEM.............. 8W-30-1
TRANSMISSION CONTROL SYSTEM..... 8W-31-1
VEHICLE SPEED CONTROL............ 8W-33-1
ANTILOCK BRAKES................... 8W-35-1
VEHICLE THEFT SECURITY SYSTEM..... 8W-39-1
INSTRUMENT CLUSTER............... 8W-40-1
HORN/CIGAR LIGHTER/POWER OUTLET . . 8W-41-1
AIR CONDITIONING-HEATER........... 8W-42-1
OCCUPANT RESTRAINT SYSTEM........ 8W-43-1
INTERIOR LIGHTING.................. 8W-44-1
BODY CONTROL MODULE............. 8W-45-1
MESSAGE CENTER................... 8W-46-1
AUDIO SYSTEM..................... 8W-47-1REAR WINDOW DEFOGGER............ 8W-48-1
OVERHEAD CONSOLE................. 8W-49-1
FRONT LIGHTING.................... 8W-50-1
REAR LIGHTING..................... 8W-51-1
TURN SIGNALS...................... 8W-52-1
WIPERS............................ 8W-53-1
TRAILER TOW....................... 8W-54-1
NAVIGATION/TELECOMMUNICATIONS.... 8W-55-1
CONVENIENCE SYSTEMS.............. 8W-56-1
POWER WINDOWS................... 8W-60-1
POWER DOOR LOCKS................ 8W-61-1
POWER MIRRORS................... 8W-62-1
POWER SEATS...................... 8W-63-1
POWER SUNROOF................... 8W-64-1
SPLICE INFORMATION................ 8W-70-1
CONNECTOR PIN-OUTS............... 8W-80-1
CONNECTOR/GROUND/SPLICE
LOCATION........................ 8W-91-1
POWER DISTRIBUTION SYSTEM........ 8W-97-1 RSWIRING
8W-1

8W-39 VEHICLE THEFT SECURITY SYSTEM
Component Page
Body Control Module........... 8W-39-2, 3, 6, 7,
8, 9, 10, 11, 12, 13
Clockspring........................ 8W-39-5
Driver Door Lock Switch........... 8W-39-11, 12
Front Control Module............. 8W-39-2, 3, 5
Front Intrusion Sensor................ 8W-39-4
Fuse 8............................ 8W-39-5
Fuse 14............................ 8W-39-2
G102.............................. 8W-39-5
G200.......................... 8W-39-2, 3, 5
G300.............. 8W-39-6, 7, 8, 10, 11, 12, 13
G301................. 8W-39-6, 7, 8, 10, 11, 12
G302............................. 8W-39-13
G303............................. 8W-39-13
High Note Horn..................... 8W-39-5
Hood Ajar Switch................... 8W-39-13
Horn Relay......................... 8W-39-5
Horn Switch........................ 8W-39-5
Ignition Switch.................... 8W-39-2, 3
Integrated Power Module.......... 8W-39-2, 3, 5
Left Cylinder Lock Switch......... 8W-39-11, 12
Left Front Door Ajar Switch............ 8W-39-6
Left Front Door Lock Motor/Ajar
Switch........................ 8W-39-6, 7Component Page
Left Sliding Door Control Module...... 8W-39-8, 9
Left Sliding Door Latch Sensing Switch . . . 8W-39-8
Left Sliding Door Lock Motor........... 8W-39-9
Left Sliding Door Lock Motor/Ajar
Switch......................... 8W-39-10
Liftgate Ajar Switch................. 8W-39-13
Liftgate Cinch/Release Motor.......... 8W-39-13
Passenger Door Lock Switch........ 8W-39-11, 12
Power Liftgate Module............... 8W-39-13
Rear Intrusion Sensor................ 8W-39-4
Right Cylinder Lock Switch........ 8W-39-11, 12
Right Front Door Ajar Switch........... 8W-39-6
Right Front Door Lock Motor/Ajar
Switch........................ 8W-39-6, 7
Right Sliding Door Control Module.... 8W-39-8, 9
Right Sliding Door Latch Sensing Switch . . 8W-39-8
Right Sliding Door Lock Motor.......... 8W-39-9
Right Sliding Door Lock Motor/Ajar
Switch......................... 8W-39-10
Sentry Key Remote Entry Module....... 8W-39-2
Siren............................. 8W-39-3
Thatcham Alarm Indicator............. 8W-39-4
Thatcham Alarm Module............ 8W-39-3, 4
RS8W-39 VEHICLE THEFT SECURITY SYSTEM8W-39-1

8W-97 POWER DISTRIBUTION SYSTEM
TABLE OF CONTENTS
page page
POWER DISTRIBUTION SYSTEM
DESCRIPTION..........................1
OPERATION............................1
SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS.........1
INTEGRATED POWER MODULE
DESCRIPTION..........................1
OPERATION............................2
REMOVAL.............................2
INSTALLATION..........................2IOD FUSE
DESCRIPTION..........................3
OPERATION............................3
POWER OUTLET
DESCRIPTION..........................3
OPERATION............................3
DIAGNOSIS AND TESTING
DIAGNOSIS & TESTING - POWER OUTLET . . 3
REMOVAL.............................4
INSTALLATION..........................4
POWER DISTRIBUTION
SYSTEM
DESCRIPTION
The power distribution system for this vehicle con-
sists of the following components:
²Integrated Power Module (IPM)
²Front Control Module (FCM)
²Power Outlets
Refer to Wiring Diagrams for complete circuit sche-
matics.
The power distribution system also incorporates
various types of circuit control and protection fea-
tures, including:
²Automatic resetting circuit breakers
²Blade-type fuses
²Bus bars
²Cartridge fuses
²Circuit splice blocks
²Flashers
²Fusible links
²Relays
OPERATION
The power distribution system for this vehicle is
designed to provide safe, reliable, and centralized dis-
tribution points for the electrical current required to
operate all of the many standard and optional facto-
ry-installed electrical and electronic powertrain,
chassis, safety, security, comfort and convenience sys-
tems. At the same time, the power distribution sys-
tem was designed to provide ready access to these
electrical distribution points for the vehicle techni-
cian to use when conducting diagnosis and repair of
faulty circuits. The power distribution system can
also prove useful for the sourcing of additional elec-
trical circuits that may be required to provide theelectrical current needed to operate many accessories
that the vehicle owner may choose to have installed.
SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS
INTEGRATED POWER MODULE
DESCRIPTION
The Integrated Power Module (IPM) is a combina-
tion of the Power Distribution Center (PDC) and the
Front Control Module (FCM). The IPM is located in
the engine compartment, next to the battery. (Fig. 1).
The PDC mates directly with the FCM to form the
IPM. The PDC is a printed circuit board based mod-
ule that contains fuses and relays, while the FCM
contains the electronics controlling the IPM and
other functions. This IPM connects directly to the
battery positive through a four pin connector. The
ground connection is through two other connectors.
Terminal Pick Kit 6680
RS8W-97 POWER DISTRIBUTION SYSTEM8W-97-1

The IPM provides the primary means of voltage dis-
tribution and protection for the entire vehicle.
OPERATION
All of the current from the battery and the gener-
ator output enters the Integrated Power Module
(IPM) through a four- pin connector on the bottom of
the module. Internal connections of all of the power
distribution center circuits is accomplished by a com-
bination of bus bars and a printed circuit board.
REMOVAL
(1) Disconnect the negative and positive battery
cables.
(2) Remove the battery thermal guard.
(3) Remove the battery (Refer to 8 - ELECTRI-
CAL/BATTERY SYSTEM/BATTERY - REMOVAL).
(4) Using a flat-bladed screwdriver, twist the Inte-
grated Power Module (IPM) bracket retaining latch
outward to free the IPM from its mounting bracket
(Fig. 2).
(5) Rotate the IPM counter-clockwise to access and
disconnect the electrical connectors (Fig. 3).
(6) Remove the IPM bracket clips from the hinge.
INSTALLATION
(1) Snap the left side of the Integrated Power Mod-
ule (IPM) housing in its mounting bracket and con-
nect the various electrical connectors.NOTE: Ensure that the Connector Positive Assur-
ance (CPA) on the five-pin B+ connector is posi-
tively engaged to prevent generating a Diagnostic
Trouble Code (DTC).
(2) Rotate the IPM clock-wise until secured in
mounting bracket. An audible click may be heard.
(3) Install the battery (Refer to 8 - ELECTRICAL/
BATTERY SYSTEM/BATTERY - INSTALLATION).
(4) Install the battery thermal guard.
Fig. 1 INTEGRATED POWER MODULE
1 - BATTERY THERMAL GUARD
2 - INTEGRATED POWER MODULE
3 - FRONT CONTROL MODULE
Fig. 2 INTEGRATED POWER MODULE
Fig. 3 DISCONNECTING IPM
1 - INTEGRATED POWER MODULE
8W - 97 - 2 8W-97 POWER DISTRIBUTION SYSTEMRS
INTEGRATED POWER MODULE (Continued)

(5) Connect the negative and positive battery
cables.
(6) Using a scan tool, check for any stored diagnos-
tic trouble codes. Ensure that all vehicle options are
operational.
IOD FUSE
DESCRIPTION
All vehicles are equipped with an Ignition-Off
Draw (IOD) fuse that is removed from its normal
cavity in the Integrated Power Module (IPM) when
the vehicle is shipped from the factory. Dealer per-
sonnel are to remove the IOD fuse from the storage
location and install it into the IPM fuse cavity
marked IOD as part of the preparation procedures
performed just prior to new vehicle delivery.
The IOD fuse is a 20 ampere blade-type mini fuse
and, when removed, it is stored in a fuse cavity adja-
cent to the washer fuse within the IPM.
OPERATION
The term ignition-off draw (IOD) identifies a nor-
mal condition where power is being drained from the
battery with the ignition switch in the Off position.
The IOD fuse feeds the memory and sleep mode func-
tions for some of the electronic modules in the vehicle
as well as various other accessories that require bat-
tery current when the ignition switch is in the Off
position, including the clock. The only reason the
IOD fuse is removed is to reduce the normal IOD of
the vehicle electrical system during new vehicle
transportation and pre-delivery storage to reduce
battery depletion, while still allowing vehicle opera-
tion so that the vehicle can be loaded, unloaded and
moved as needed by both vehicle transportation com-
pany and dealer personnel.
The IOD fuse is removed from the Integrated
Power Module (IPM) fuse cavity when the vehicle is
shipped from the assembly plant. Dealer personnel
must install the IOD fuse when the vehicle is being
prepared for delivery in order to restore full electrical
system operation. Once the vehicle is prepared for
delivery, the IOD function of this fuse becomes trans-
parent and the fuse that has been assigned the IOD
designation becomes only another Fused B(+) circuit
fuse. The IOD fuse serves no useful purpose to the
dealer technician in the service or diagnosis of any
vehicle system or condition, other than the same pur-
pose as that of any other standard circuit protection
device.
The IOD fuse can be used by the vehicle owner as
a convenient means of reducing battery depletion
when a vehicle is to be stored for periods not to
exceed approximately thirty days. However, it mustbe remembered that removing the IOD fuse will not
eliminate IOD, but only reduce this normal condition.
If a vehicle will be stored for more than thirty days,
the battery negative cable should be disconnected to
eliminate normal IOD; and, the battery should be
tested and recharged at regular intervals during the
vehicle storage period to prevent the battery from
becoming discharged or damaged.
POWER OUTLET
DESCRIPTION
Two power outlets are installed in the instrument
panel center lower bezel. Two additional power out-
lets are incorporated into the left rear C-pillar and
the center console (if equipped). The power outlets
bases are secured by a snap fit. A hinged plug flips
closed to conceal and protect the power outlet base
when not in use.
OPERATION
The power outlet base or receptacle shell is con-
nected to ground, and an insulated contact in the
bottom of the shell is connected to battery current.
The power outlet on the instrument panel marked
with a battery receives battery voltage from a fuse in
the Integrated Power Module (IPM) at all times. The
other power outlet on the instrument panel marked
with a key receives battery voltage only when the
key is in the on position.
The power outlet located in the center console
receives battery voltage all the time when positioned
between thefront seatsand key-on voltage when
positioned between therear seats. The power outlet
located on the C-pillar receives battery voltage only
when the key is in the ON position.
DIAGNOSIS AND TESTING
DIAGNOSIS & TESTING - POWER OUTLET
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO RESTRAINTS BEFORE ATTEMPT-
ING ANY STEERING WHEEL, STEERING COLUMN,
SEAT OR INSTRUMENT PANEL COMPONENT DIAG-
NOSIS OR SERVICE. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Check the fused B(+) fuse in the Integrated
Power Module (IPM). If OK, go to Step 2. If not OK,
repair the shorted circuit or component as required
and replace the faulty fuse.
RS8W-97 POWER DISTRIBUTION SYSTEM8W-97-3
INTEGRATED POWER MODULE (Continued)