REMOVAL AND INSTALLATION
COMBINATION FLASHER
The flasher is mounted to the back side of the
multi-function switch (Fig. 2). To gain access the
upper steering column shroud must be removed.
Refer to Group 8E Instrument Panel Systems, Steer-
ing Column Shroud Removal and Installation. The
flasher can be removed by pulling it toward the
instrument cluster (forward). The flasher is serviced
separately from the multi-function switch.
MULTI-FUNCTION SWITCH
REMOVAL
(1) Disconnect and isolate the battery negative
cable (Fig. 6).
(2) Remove both upper and lower steering column
shrouds. Refer to Group 8E Instrument Panel Sys-
tems, Steering Column Shroud Removal and Instal-
lation.
Fig. 3 Combination Flasher Connector (A)
Fig. 4 Multi-Function Switch Connector (B)
Fig. 5 Windshield Wiper/Washer Switch Connector
(C)
Fig. 6 Battery Negative Cable Remove/Install
1 ± NEGATIVE CABLE
2 ± NEGATIVE BATTERY POST
PLTURN SIGNAL and HAZARD WARNING SYSTEMS 8J - 5
DIAGNOSIS AND TESTING (Continued)
LAMP SYSTEMS
DESCRIPTION AND OPERATION
DAYTIME RUNNING LAMP MODULE
PL vehicles built for use in Canada are equipped
with a Daytime Running Lamp (DRL) system. The
DRL function is provided by the cluster. The DRL
Module is an integral part of the instrument panel
cluster.
8L - 16 LAMPSPL
BULB APPLICATION
TABLE OF CONTENTS
page page
SPECIFICATIONS
EXTERIOR LAMPS........................17INTERIOR LAMPS........................17
SPECIFICATIONS
EXTERIOR LAMPS
CAUTION: Do not use bulbs that have a higher can-
dle power than the bulb listed in the chart below.
Damage to lamp can result. Do not touch halogen
bulbs with fingers or other oily surfaces. Bulb life
will be reduced.
LAMP BULB
Back Up Lamp................3157 ± P27/7W
Center High Mounted Stop Lamp
(CHMSL).........................W16W
Front Fog Lamp..................... GE881
Front Park/Turn Signal Lamp..........3157NA
Front Side Marker Lamp................. 168
Headlamp............................9007
License Plate Lamp..................... 168
Rear Tail/Stop/
Turn Signal Lamp............3157 ± P27/7W
INTERIOR LAMPS
Service procedures for most of the lamps in the
instrument panel, Instrument cluster and switches
are located in Group 8E, Instrument Panel and
Gauges.
CAUTION: Do not use bulbs that have a higher can-
dle power than the bulb listed in the chart below.
Damage to lamp can result.LAMP BULB
ABS Indicator......................... LED
Airbag Indicator....................... LED
Brake System Warning Indicator.......... LED
Climate Controls....................... LED
Console Gear Selector W/Auto...........PC194
Dome Lamp..........................T579
Floor Console Lamp..................... T37
Front Fog Lamp Indicator................ LED
Glove Compartment....................T194
High Beam Lamp Indicator.............PC194
Ignition Lock........................... 161
Instrument Cluster Illumination.........PC194
Low Fuel Indicator..................... LED
Low Oil Pressure Indicator............... LED
Rear Cargo...........................T906
Seat Belt Indicator..................... LED
Security Alarm Indicator................. LED
Malfunction Indicator Light.............. LED
TRAC OFF Indicator.................... LED
Turn Signal Indicator..................PC194
Underhood............................ 105
Visor Vanity........................6501966
Voltage Indicator....................... LED
All the inside bulbs brass or glass wedge base. Alu-
minum base bulbs are not approved and should not
be used for replacement.
PLLAMPS 8L - 17
BULB APPLICATION
TABLE OF CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION.........................19
SPECIFICATIONS
EXTERIOR LAMPS........................19INTERIOR LAMPS........................19
GENERAL INFORMATION
INTRODUCTION
The following Bulb Application Tables list the lamp
title on the left side of the column and trade number
or part number on the right.
CAUTION: Do not use bulbs that have a higher can-
dle power than the bulb listed in the Bulb Applica-
tion Table. Damage to lamp can result.
Do not touch halogen bulbs with fingers or other
possibly oily surfaces. Bulb life will be reduced.
If a halogen bulb is contaminated with oil, clean
bulb with denatured alcohol or ammonia based sol-
vent.
SPECIFICATIONS
EXTERIOR LAMPS
LAMP BULB
Lowbeam Headlamp..................9006XS
Highbeam Headlamp.................9005XS
Center High Mounted Stop.............W16W
Front Position........................ W5W
Side Repeater / Turn Signal............... 37R
Rear License Plate..................... W5W
Front Turn Signal....................P214W
Tail/Stop...........................P27/7W
Rear Turn Signal....................P27/7W
Back-up...........................P27/7W
Rear Fog Lamp......................P27/7W
INTERIOR LAMPS
LAMP BULB
ABS ...............................PC194
Airbag.............................PC194
AshTray .............................. 161
Brake Warning System Indicator.........PC194
Cigar Lighter.......................... 203
Climate Controls........................ 203
Console Gear Selector.................... 161
Dome Light............................ 578
Glove Box............................. 194
High Beam Indicator..................PC194
Ignition Key........................... 161
Instrument Cluster...................PC194
Rear Cargo............................ 912
Seat Belt Indicator.....................PC74
Service Engine Soon...................PC194
Turn Signal Indicator..................PC194
Underhood............................ 105
Visor Vanity........................6501966
Volts Indicator........................PC74
PLLAMPS 8L - 19
lever (Fig. 1). The ACM monitors the system to deter-
mine the system readiness. The ACM contains
on-board diagnostics, and will illuminate the AIR-
BAG warning lamp in the cluster when a fault
occurs. The warning equipment is tested for six to
eight seconds every time the vehicle is started.
CLOCKSPRING
The clockspring is mounted to the steering column
behind the steering wheel (Fig. 2). The clockspring is
used to maintain a continuous electrical circuit
between the wiring harness and the:
²Driver's airbag module
²Speed control switches
²Horn switch
The clockspring consists of a flat, ribbon like, elec-
trically conductive tape which winds and unwinds
with the steering wheel rotation.
DRIVER and PASSENGER AIRBAG MODULE
WARNING: NEVER DISASSEMBLE THE DRIVER OR
PASSENGER AIRBAG MODULES, THERE ARE NO
SERVICEABLE PARTS WITH IN THE MODULES.
The Driver Airbag Module located on the steering
wheel is the most visible part of the system (Fig. 3).
The airbag module contains a housing to which the
cushion, inflator and cover are attached to.
The driver side inflator assembly is mounted from
the back of the module housing. When supplied with
the proper electrical signal the inflator assembly will
produce a gas and discharge it directly into the cush-
ion. A protective cover is fitted to the front of the
Driver Airbag Module and forms a decorative cover
in the center of the steering wheel. The Driver Air-bag Module is mounted directly to the steering
wheel.
The Passenger Airbag Module is located beneath
the decorative cover of the instrument panel, facing
the passenger seat (Fig. 3).
The passenger inflator assembly is within the mod-
ule housing. The module is mounted to the instru-
ment panel retainer and support structure. When
supplied with the proper electrical signal the inflator
will produce a gas and discharge it directly into the
cushion. A protective cover is fitted over the airbag
module and forms a decorative cover.
Fig. 1 Airbag Control Module (ACM) Location -
Typical
1 ± AIRBAG CONTROL MODULE
Fig. 2 Clockspring Location
1 ± STEERING COLUMN
2 ± CLOCKSPRING
3 ± CLOCKSPRING ELECTRICAL CONNECTOR
4 ± IGNITION SWITCH ELECTRICAL CONNECTOR
Fig. 3 Driver/Passenger Airbag Modules
1 ± DRIVER AIRBAG
2 ± PASSENGER AIRBAG
8M - 2 PASSIVE RESTRAINT SYSTEMSPL
DESCRIPTION AND OPERATION (Continued)
VTSS disarming occurs upon normal vehicle entry
by unlocking either door via the key cylinders or
RKE transmitter, or by starting the vehicle with a
valid Sentry Key. This disarming will also halt the
alarm once it has been activated.
A tamper alert exists to notify the driver that the
system had been activated. This alert consists of 3
horn pulses when the vehicle is disarmed.
The VTSS will not arm by mechanically locking the
vehicle doors. This will manually override the sys-
tem.
In the dealer lot storage mode of operation, all of
the above descriptions of the VTSS are true with the
following exceptions:
²Remote Keyless Entry functions are disabled,
and cannot be used for arming/disarming the VTSS.
²The VTSS indicator is non-operational.
SENTRY KEY IMMOBILIZER SYSTEM (SKIS)
The Sentry Key Immobilizer System (SKIS) is
designed to provide passive protection against unau-
thorized vehicle use by preventing the engine from
operating while the system is armed. The primary
components of this system are the Sentry Key Immo-
bilizer Module (SKIM), the Sentry Key transponder,
the Vehicle Theft/Security System (VTSS) indicator
LED, and the Powertrain Control Module (PCM).
The SKIM is installed on the steering column near
the ignition lock cylinder. The transponder is located
under the molded rubber cap on the head of the igni-
tion key. The VTSS indicator LED is located in the
instrument cluster.
The SKIS includes three valid Sentry Key tran-
sponders from the factory, one being a valet key. This
is so the customer can self program new keys if one
is lost. If the customer wishes, additional non-coded
blank Sentry Keys are available. These blank keys
can be cut to match a valid ignition key, but the
engine will not start unless the key transponder is
also programmed to the vehicle. The SKIS will recog-
nize no more than eight valid Sentry Key transpon-
ders at any one time.
The SKIS performs a self-test each time the igni-
tion switch is turned to the ON position, and will
store Diagnostic Trouble Codes (DTC's) if a system
malfunction is detected. The SKIS can be diagnosed,
and any stored DTC can be retrieved using a DRB
llltscan tool as described in the proper Body Diag-
nostic Procedures Manual.
SENTRY KEY IMMOBILIZER MODULE (SKIM)
The Sentry Key Immobilizer Module (SKIM) (Fig.
1) contains a Radio Frequency (RF) transceiver and a
central processing unit, which includes the Sentry
Key Immobilizer System (SKIS) program logic. The
SKIS programming enables the SKIM to programand retain in memory the codes of at least two, but
no more than eight electronically coded Sentry Key
transponders. The SKIS programming also enables
the SKIM to communicate over the Programmable
Communication Interface (PCI) bus network with the
Powertrain Control Module (PCM), the instrument
cluster and/or the DRB IIItscan tool.
The SKIM transmits and receives RF signals
through a tuned antenna enclosed within a molded
plastic ring formation that is integral to the SKIM
housing. When the SKIM is properly installed on the
steering column, the antenna ring is oriented around
the circumference of the ignition lock cylinder hous-
ing (Fig. 1). This antenna ring must be located
within eight millimeters (0.31 inches) of the Sentry
Key in order to ensure proper RF communication
between the SKIM and the Sentry Key transponder.
For added system security, each SKIM is pro-
grammed with a unique ªSecret Keyº code and a
security code. The SKIM keeps the ªSecret Keyº code
in memory and sends the code over the CCD data
bus to the PCM, which also keeps this code in its
memory. The SKIM also sends the ªSecret Keyº code
to each of the programmed Smart Key transponders.
The security code is used by the assembly plant to
access the SKIS for initialization, or by the dealer
technician to access the system for service. The
SKIM also stores in its memory the Vehicle Identifi-
cation Number (VIN), which it learns through a PCI
bus message from the PCM during initialization.
The SKIM and the PCM both use software that
includes a rolling code algorithm strategy, which
helps to reduce the possibility of unauthorized SKIS
Fig. 1 Sentry Key Immobilizer Module (SKIM)
Location
1 ± STEERING COLUMN
2 ± SKIM ELECTRICAL CONNECTOR
3 ± SKIM
8Q - 2 VEHICLE THEFT/SECURITY SYSTEMPL
DESCRIPTION AND OPERATION (Continued)
disarming. The rolling code algorithm ensures secu-
rity by preventing an override of the SKIS through
the unauthorized substitution of the SKIM or the
PCM. However, the use of this strategy also means
that replacement of either the SKIM or the PCM
units will require a system initialization procedure to
restore system operation.
When the ignition switch is turned to the ON or
START positions, the SKIM transmits an RF signal
to excite the Sentry Key transponder. The SKIM then
listens for a return RF signal from the transponder
of the Sentry Key that is inserted in the ignition lock
cylinder. If the SKIM receives an RF signal with
valid ªSecret Keyº and transponder identification
codes, the SKIM then sends a ªvalid keyº message to
the PCM over the PCI bus. If the SKIM receives an
invalid RF signal or no response, it sends ªinvalid
keyº messages to the PCM. The PCM will enable or
disable engine operation based upon the status of the
SKIM messages.
The SKIM also sends messages to the instrument
cluster over the PCI bus network to control the VTSS
indicator LED. The SKIM sends messages to the
instrument cluster to turn the LED on for about
three seconds when the ignition switch is turned to
the ON position as a bulb test. After completion of
the bulb test, the SKIM sends bus messages to keep
the LED off for a duration of about one second. Then
the SKIM sends messages to turn the LED on or off
based upon the results of the SKIS self-tests. If the
VTSS indicator LED comes on and stays on after the
bulb test, it indicates that the SKIM has detected a
system malfunction and/or that the SKIS has become
inoperative.
If the SKIM detects an invalid key when the igni-
tion switch is turned to the ON position, it sends
messages to the instrument cluster to flash the VTSS
indicator LED. The SKIM can also send messages to
the instrument cluster to flash the LED and to gen-
erate a single audible chime tone. These functions
serve as an indication to the customer that the SKIS
has been placed in its ªCustomer Learnº program-
ming mode. See Sentry Key Immobilizer System
Transponder Programming in this group for more
information on the ªCustomer Learnº programming
mode.
For diagnosis or initialization of the SKIM and the
PCM, a DRB IIItscan tool and the proper Body
Diagnostic Procedures Manual are required. The
SKIM cannot be repaired, and if faulty or damaged,
the unit must be replaced.
SENTRY KEY IMMOBILIZER SYSTEM
TRANSPONDER
The Sentry Key Immobilizer System (SKIS) uses a
transponder that is integral to each of three ignitionkey that are supplied with the vehicle when it is
shipped from the factory. The transponder chip is
insulated within a nylon mount inserted in the head
of the key, and invisible beneath a molded rubber cap
(Fig. 2).
Each Sentry Key transponder has a unique tran-
sponder identification code programmed into it by the
manufacturer. The Sentry Key Immobilizer Module
(SKIM) has a unique ªSecret Keyº code programmed
into it by the manufacturer. When a Sentry Key
transponder is programmed into the memory of the
SKIM, the SKIM learns the transponder identifica-
tion code from the transponder, and the transponder
learns the ªSecret Keyº code from the SKIM. Each of
these codes is stored within the transponder and in
the nonvolatile memory of the SKIM. Therefore,
blank keys for the SKIS must be programmed by and
into the SKIM, in addition to being cut to match the
mechanical coding of the ignition lock cylinder. See
Sentry Key Immobilizer System Transponder Pro-
gramming in this group for more information.
The Sentry Key transponder is within the range of
the SKIM transceiver antenna ring when it is
inserted in the ignition lock cylinder. When the igni-
tion switch is turned to the START or RUN positions,
the SKIM transceiver issues a Radio Frequency (RF)
signal that excites the transponder chip. The tran-
sponder chip responds by issuing an RF signal con-
taining its transponder identification code and the
ªSecret Keyº code. The SKIM transceiver compares
the transponder codes with the codes stored in its
Fig. 2 Sentry Key Immobilizer Transponder
1 ± MOLDED CAP
2 ± TRANSPONDER
3 ± MOLDED CAP REMOVED
4 ± SENTRY KEY
PLVEHICLE THEFT/SECURITY SYSTEM 8Q - 3
DESCRIPTION AND OPERATION (Continued)
memory to determine whether a valid key is in the
ignition lock cylinder.
The Sentry Key transponder cannot be repaired
and, if faulty or damaged, it must be replaced.
SENTRY KEY IMMOBILIZER SYSTEM
INDICATOR LAMP
The Sentry Key Immobilizer System (SKIS) uses
the Vehicle Theft Security System (VTSS) indicator
LED to give an indication when the SKIS is faulty or
when the vehicle has been immobilized due to the
use of an invalid ignition key. The LED is controlled
by the instrument cluster circuitry based upon mes-
sages received from the Sentry Key Immobilizer
Module (SKIM) through the Body Control Module
(BCM) on the Programmable Communication Inter-
face (PCI) bus.
The SKIM sends messages to the instrument clus-
ter, via the BCM, to turn the LED on for about three
seconds when the ignition switch is turned to the ON
position as a bulb test. After completion of the bulb
test, the SKIM sends PCI bus messages to keep the
LED off for a duration of about one second. Then the
SKIM sends messages to the instrument cluster cir-
cuitry to turn the LED on or off based upon the
results of the SKIS self-tests. If the VTSS indicator
LED comes on and stays on after the bulb test, it
indicates that the SKIM has detected a system mal-
function and/or that the SKIS has become inopera-
tive. If the SKIM detects an invalid key when the
ignition switch is turned to the ON position, it sends
messages to the instrument cluster to flash the VTSS
indicator LED.
The SKIM can also send messages to the instru-
ment cluster to flash the LED and to generate a sin-
gle audible chime tone. These functions serve as an
indication to the customer that the SKIS has been
placed in its ªCustomer Learnº programming mode.
See Sentry Key Immobilizer System Transponder
Programming in this group for more information on
the ªCustomer Learnº programming mode.
The VTSS indicator LED uses a replaceable Light
Emitting Diode (LED) on the instrument cluster elec-
tronic circuit board. Refer to Group 8E - Instrument
Panel Systems for Cluster Lamp Removal and Instal-
lation. If the VTSS indicator LED comes on and
stays on after the bulb test function, diagnosis of the
SKIS should be performed with a DRB IIItscan tool
and the proper Body Diagnostic Procedures Manual.
TRIGGERING THE VTSS
After the VTSS is armed, any of the following will
trigger the system:
²Opening any door.
²Opening the hood.
²Removing the trunk lock cylinder.²Turning the ignition to the RUN/START position
with an invalid Sentry Key.
NOTE: The ignition switch can be turned to the
accessory position without triggering the alarm sys-
tem.
DIAGNOSIS AND TESTING
SENTRY KEY IMMOBILIZER SYSTEM
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: The following tests may not prove conclu-
sive in the diagnosis of this system. The most reli-
able, efficient, and accurate means to diagnose the
Sentry Key Immobilizer System (SKIS) involves the
use of a DRB lllTscan tool and the proper Body
Diagnostic Procedures Manual.
The Sentry Key Immobilizer System (SKIS) and
the Programmable Communication Interface (PCI)
bus network should be diagnosed using a DRB lllt
scan tool. The DRB IIItwill allow confirmation that
the PCI bus is functional, that the Sentry Key Immo-
bilizer Module (SKIM) is placing the proper messages
on the PCI bus, and that the Powertrain Control
Module (PCM) and the instrument cluster are receiv-
ing the PCI bus messages. Refer to the proper Body
Diagnostic Procedures Manual. Refer to Group
8W-Wiring Diagrams for complete circuit descriptions
and diagrams.
(1) Check the fuses in the fuse block. If OK, go to
Step 2. If not OK, repair the shorted circuit or com-
ponent as required and replace the faulty fuse.
(2) Disconnect and isolate the battery negative
cable (Fig. 3). Unplug the wire harness connector at
the SKIM. Check for continuity between the ground
circuit cavity of the SKIM wire harness connector
and a good ground. There should be continuity. If
OK, go to Step 3. If not OK, repair the open circuit to
ground as required.
(3) Connect the battery negative cable. Check for
battery voltage at the fused B(+) circuit cavity of the
SKIM wire harness connector. If OK, go to Step 4. If
not OK, repair the open circuit to the fuse in the fuse
block as required.
8Q - 4 VEHICLE THEFT/SECURITY SYSTEMPL
DESCRIPTION AND OPERATION (Continued)