2005 CHRYSLER CARAVAN parking brake

(4) Disconnect the Park Assist Module electrical
connector (Fig. 4).
(5) Remove the two attaching screws and separate
the module from vehicle (Fig. 3).
INSTALLATION
(1) Position the Park Assist Module and install the
two attaching screws (Fig. 3). Torque screws to 3.5
N´m (30 in. lbs.).
(2) Connect the Park Assist Module electrical con-
nector (Fig. 4).
(3) Install the left quarter trim panel (Refer to 23 -
BODY/INTERIOR/QUARTER TRIM PANEL -
INSTALLATION).
(4) Connect the battery negative cable.
(5) Close hood.
(6) Verify vehicle and system operation.
PARK ASSIST SENSOR
DESCRIPTION
The Park Assist Sensors are located in the rear
bumper fascia mounted equally apart (Fig. 5). The
sensors generate ultrasonic pulses when triggered by
the park assist module when an obstacle is detected.
The sensors then signal the module when reflected
ultrasonic pulses are received.
The sensors detect objects with an ultrasonic pulse
that reflects off the object and then is sent to the
module to determine the distance of the object.
OPERATION
The Park Assist Sensors:
²Generate ultrasonic pulses when triggered by
the Park Assist Module.
²Reception/filtering of ultrasonic energy received.
²Signalling the module of received ultrasonic
pulses that meet threshold criteria.
The sensors are supplied power by the module. The
sensor supply is enabled when the sensor function is
necessary.
The sensors detection length from the rear of the
vehicle is 0.3 meters to 1.5 meters. This area extends
around the rear side of the vehicle. The sensor detec-
tion height from the ground is 0.2 meters to about
1.5 meters.
²Ensure that the rear bumper (sensors) is free of
dirt and debris to keep the system operating prop-
erly.
²Jackhammers, large trucks, and other vibrations
could affect the performance of the system.
²Ensure that the parking brake is not applied.
If ªService Park Assist Systemº appears in the
EVIC after making sure the rear bumper is clean,
proceed to diagnose the system using a scan tool and
the appropriate diagnostic information.
REMOVAL
(1) Open hood.
(2) Disconnect and isolate the battery negative
cable.
(3) Remove rear fascia (Refer to 13 - FRAME &
BUMPERS/BUMPERS/REAR FASCIA - REMOVAL).
(4) Unsnap Park Assist Sensor from the retaining
housing and remove from fascia.
INSTALLATION
(1)Position the Park Assist Sensor over the retain-
ing housing and firmly snap into housing in rear fascia.
(2) Install the rear fascia (Refer to 13 - FRAME &
BUMPERS/BUMPERS/REAR FASCIA - INSTALLA-
TION).
(3) Connect the battery negative cable.
(4) Close hood.
(5) Verify vehicle and system operation.
Fig. 4 PARK ASSIST MODULE ELECTRICAL
CONNECTOR
1 - MODULE ELECTRICAL CONNECTOR
2 - PARK ASSIST MODULE
Fig. 5 PARK ASSIST SENSOR LOCATION
8B - 6 CHIME/BUZZERRS
PARK ASSIST MODULE (Continued)

are installed at the open end of the female battery
terminal clamp. Large eyelet type terminals are
crimped onto the opposite end of the battery cable
wire and then solder-dipped. The battery positive
cable wires have a red insulating jacket to provide
visual identification and feature a larger female bat-
tery terminal clamp to allow connection to the larger
battery positive terminal post. The battery negative
cable wires have a black insulating jacket and a
smaller female battery terminal clamp.
The battery cables cannot be repaired and, if dam-
aged or faulty they must be replaced. Both the bat-
tery positive and negative cables are available for
service replacement only as a unit with the battery
wire harness, which may include portions of the wir-
ing circuits for the generator and other components
on some vehicles. Refer to the appropriate wiring
information for complete circuit schematic or connec-
tor pin-out information.
OPERATION
The battery cables connect the battery terminal
posts to the vehicle electrical system. These cables
also provide a path back to the battery for electrical
current generated by the charging system for restor-
ing the voltage potential of the battery. The female
battery terminal clamps on the ends of the battery
cable wires provide a strong and reliable connection
of the battery cable to the battery terminal posts.
The terminal pinch bolts allow the female terminal
clamps to be tightened around the male terminal
posts on the top of the battery. The eyelet terminals
secured to the opposite ends of the battery cable
wires from the female battery terminal clamps pro-
vide secure and reliable connection of the battery
cables to the vehicle electrical system.
The battery positive cable terminal clamp is
attached to the ends of two wires. One wire has an
eyelet terminal that connects the battery positive
cable to the B(+) terminal stud of the Integrated
Power Module (IPM), and the other wire has an eye-
let terminal that connects the battery positive cable
to the B(+) terminal stud of the engine starter motor
solenoid. The battery negative cable terminal clamp
is also attached to the ends of two wires. One wire
has an eyelet terminal that connects the battery neg-
ative cable to the vehicle powertrain through a stud
on the left side of the engine cylinder block. The
other wire has an eyelet terminal that connects the
battery negative cable to the vehicle body through a
ground screw on the left front fender inner shield,
near the battery.
DIAGNOSIS AND TESTING
BATTERY CABLES
A voltage drop test will determine if there is exces-
sive resistance in the battery cable terminal connec-
tions or the battery cable. If excessive resistance is
found in the battery cable connections, the connec-
tion point should be disassembled, cleaned of all cor-
rosion or foreign material, then reassembled.
Following reassembly, check the voltage drop for the
battery cable connection and the battery cable again
to confirm repair.
When performing the voltage drop test, it is impor-
tant to remember that the voltage drop is giving an
indication of the resistance between the two points at
which the voltmeter probes are attached.EXAM-
PLE:When testing the resistance of the battery pos-
itive cable, touch the voltmeter leads to the battery
positive cable terminal clamp and to the battery pos-
itive cable eyelet terminal at the starter solenoid
B(+) terminal stud. If you probe the battery positive
terminal post and the battery positive cable eyelet
terminal at the starter solenoid B(+) terminal stud,
you are reading the combined voltage drop in the
battery positive cable terminal clamp-to-terminal
post connection and the battery positive cable.
VOLTAGE DROP TEST
The following operation will require a voltmeter
accurate to 1/10 (0.10) volt. Before performing this
test, be certain that the following procedures are
accomplished:
²The battery is fully-charged and load tested.
(Refer to 8 - ELECTRICAL/BATTERY SYSTEM/BAT-
TERY - STANDARD PROCEDURE - BATTERY
CHARGING) for the proper battery charging and
load test procedures.
²Fully engage the parking brake.
²If the vehicle is equipped with an automatic
transmission, place the gearshift selector lever in the
Park position. If the vehicle is equipped with a man-
ual transmission, place the gearshift selector lever in
the Neutral position and block the clutch pedal in the
fully depressed position.
²Verify that all lamps and accessories are turned
off.
²To prevent the engine from starting, remove the
Automatic Shut Down (ASD) relay. The ASD relay is
located in the Intelligent Power Module (IPM), in the
engine compartment. See the fuse and relay layout
label affixed to the underside of the IPM cover for
ASD relay identification and location.
RSBATTERY SYSTEM8F-17
BATTERY CABLES (Continued)

CONDITION POSSIBLE CAUSE CORRECTION
2. STARTING CIRCUIT
WIRING FAULTY.2. REFER TO THE FEED CIRCUIT RESISTANCE TEST AND
THE FEED CIRCUIT TEST IN THIS SECTION. REPAIR AS
NECESSARY.
3. STARTER ASSEMBLY
FAULTY.3. IF ALL OTHER STARTING SYSTEM COMPONENTS AND
CIRCUITS CHECK OK, REPLACE STARTER ASSEMBLY.
4. ENGINE SEIZED. 4. REFER TO THE ENGINE SECTION, FOR DIAGNOSTIC AND
SERVICE PROCEDURES.
5. LOOSE
CONNECTION AT
BATTERY, PDC,
STARTER, OR ENGINE
GROUND.5. INSPECT FOR LOOSE CONNECTIONS.
6. FAULTY TEETH ON
RING GEAR.6. ROTATE FLYWHEEL 360É, AND INSPECT TEETH AND RING
GEAR REPLACED IF DAMAGED.
STARTER
ENGAGES,
SPINS OUT
BEFORE
ENGINE
STARTS.1. BROKEN TEETH ON
STARTER RING GEAR.1. REMOVE STARTER. INSPECT RING GEAR AND REPLACE
IF NECESSARY.
2. STARTER ASSEMBLY
FAULTY.2. IF ALL OTHER STARTING SYSTEM COMPONENTS AND
CIRCUITS CHECK OK, REPLACE STARTER ASSEMBLY.
STARTER DOES
NOT
DISENGAGE.1. STARTER
IMPROPERLY
INSTALLED.1. INSTALL STARTER. TIGHTEN STARTER MOUNTING
HARDWARE TO CORRECT TORQUE SPECIFICATIONS.
2. STARTER RELAY
FAULTY.2. REFER TO RELAY TEST, IN THIS SECTION. REPLACE
RELAY, IF NECESSARY.
3. IGNITION SWITCH
FAULTY.3. REFER TO IGNITION SWITCH TEST, IN THE STEERING
SECTION. REPLACE SWITCH, IF NECESSARY.
4. STARTER ASSEMBLY
FAULTY.4. IF ALL OTHER STARTING SYSTEM COMPONENTS AND
CIRCUITS CHECK OK, REPLACE STARTER ASSEMBLY.
5. FAULTY TEETH ON
RING GEAR.5. ROTATE FLYWHEEL 360É, AND INSPECT TEETH AND RING
GEAR REPLACED IF DAMAGED.
DIAGNOSIS AND TESTING - CONTROL
CIRCUIT TEST
The starter control circuit has:
²Starter motor with integral solenoid
²Starter relay
²Transmission range sensor, or Park/Neutral
Position switch with automatic transmissions
²Ignition switch
²Battery
²All related wiring and connections
²Powertrain Control Module (PCM)
CAUTION: Before performing any starter tests, the
ignition and fuel systems must be disabled.²To disable ignition and fuel systems, disconnect
the Automatic Shutdown Relay (ASD). The ASD relay
is located in the Power Distribution Center (PDC).
Refer to the PDC cover for the proper relay location.
STARTER SOLENOID
WARNING: CHECK TO ENSURE THAT THE TRANS-
MISSION IS IN THE PARK POSITION WITH THE
PARKING BRAKE APPLIED. THIS MAY RESULT IN
PERSONAL INJURY OR DEATH.
(1) Verify battery condition. Battery must be in
good condition with a full charge before performing
any starter tests. Refer to Battery Tests.
RSSTARTING8F-33
STARTING (Continued)

(2) Perform Starter Solenoid test BEFORE per-
forming the starter relay test.
(3) Perform a visual inspection of the starter/
starter solenoid for corrosion, loose connections or
faulty wiring.
(4) Locate and remove the starter relay from the
Power Distribution Center (PDC). Refer to the PDC
label for relay identification and location.
(5) Connect a remote starter switch or a jumper
wire between the remote battery positive post and
terminal 87 of the starter relay connector.
(a) If engine cranks, starter/starter solenoid is
good. Go to the Starter Relay Test.
(b) If engine does not crank or solenoid chatters,
check wiring and connectors from starter relay to
starter solenoid and from the battery positive ter-
minal to starter post for loose or corroded connec-
tions. Particularly at starter terminals.
(c) Repeat test. If engine still fails to crank prop-
erly, trouble is within starter or starter mounted
solenoid, and replace starter. Inspect the ring gear
teeth.
STARTER RELAY
WARNING: CHECK TO ENSURE THAT THE TRANS-
MISSION IS IN THE PARK/NEUTRAL POSITION
WITH THE PARKING BRAKE APPLIED. THIS MAY
RESULT IN PERSONAL INJURY OR DEATH.
RELAY TEST
The starter relay is located in the Power Distribu-
tion Center (PDC) in the engine compartment. Refer
to the PDC label for relay identification and location.
Remove the starter relay from the PDC as
described in this group to perform the following tests:
(1) A relay in the de-energized position should
have continuity between terminals 87A and 30, and
no continuity between terminals 87 and 30. If OK, go
to Step 2. If not OK, replace the faulty relay.
(2) Resistance between terminals 85 and 86 (elec-
tromagnet) should be 75  5 ohms. If OK, go to Step
3. If not OK, replace the faulty relay.
(3) Connect a battery B+ lead to terminals 85 and
a ground lead to terminal 86 to energize the relay.
The relay should click. Also test for continuity
between terminals 30 and 87, and no continuity
between terminals 87A and 30. If OK, refer to Relay
Circuit Test procedure. If not OK, replace the faulty
relay.
CAV FUNCTION
30 B (+)
85 IGNITION SWITCH OUTPUT
86
PCM-CONTROLLED GROUND
87 STARTER RELAY OUTPUT
87A NO CONNECT
Starter Relay Pinout
Starter Relay Pinout
Starter Relay Pinout
8F - 34 STARTINGRS
STARTING (Continued)

the START position. If voltage reads above 0.2 volt,
correct poor starter to engine ground.
(a) Connect the positive voltmeter lead to the
battery positive terminal, and negative lead to bat-
tery cable terminal on starter solenoid. Rotate and
hold the ignition switch in the START position. If
voltage reads above 0.2 volt, correct poor contact at
battery cable to solenoid connection. If reading is
still above 0.2 volt after correcting poor contacts,
replace battery positive cable.
(b) If resistance tests do not detect feed circuit
failures, replace the starter motor.
DIAGNOSIS AND TESTING - FEED CIRCUIT
TEST
NOTE: The following results are based upon the
vehicle being at room temperature.
The following procedure will require a suitable
volt-ampere tester (Fig. 1).
CAUTION: Before performing any starter tests, the
ignition and fuel systems must be disabled.(1) Check battery before performing this test. Bat-
tery must be fully charged.
(2) Connect a volt-ampere tester to the battery ter-
minals. Refer to the operating instructions provided
with the tester being used.
(3) To disable the ignition and fuel systems, dis-
connect the Automatic Shutdown Relay (ASD). The
ASD relay is located in the Power Distribution Cen-
ter (PDC). Refer to the PDC cover for proper relay
location.
(4) Verify that all lights and accessories are OFF,
and the transmission shift selector is in the PARK
and SET parking brake.
CAUTION: Do not overheat the starter motor or
draw the battery voltage below 9.6 volts during
cranking operations.
(5) Rotate and hold the ignition switch in the
START position. Observe the volt-ampere tester (Fig.
1).
²If voltage reads above 9.6 volts, and amperage
draw reads above 280 amps, check for engine seizing
or faulty starter.
²If voltage reads 12.4 volts or greater and amper-
age reads 0 to 10 amps, check for corroded cables
and/or bad connections.
²Voltage below 9.6 volts and amperage draw
above 300 amps, the problem is the starter. Replace
the starter refer to starter removal.
(6) After the starting system problems have been
corrected, verify the battery state-of-charge and
charge battery if necessary. Disconnect all testing
equipment and connect ASD relay. Start the vehicle
several times to assure the problem has been cor-
rected.
SPECIFICATIONS
Torques
DESCRIPTION N´m Ft. Lbs. In. Lbs.
Starter Mounting Bolts 47.4 35
Starter Solenoid Battery
Nut11.3 8.3 100
Fig. 1 Volt Ampere Tester
8F - 36 STARTINGRS
STARTING (Continued)

AUTOMATIC DAY / NIGHT
MIRROR
DESCRIPTION
An automatic dimming inside day/night rear view
mirror and an automatic dimming driver side outside
rear view mirror are available factory-installed
options on this model. Following is a general descrip-
tion of this optional equipment.
The automatic day/night mirror is able to automat-
ically change its reflectance. A thin layer of electro-
chromic material between two pieces of conductive
glass make up the face of the mirror. Two photocell
sensors are used to monitor light levels and adjust
the reflectance of the mirror to reduce the glare of
headlamps approaching the vehicle from the rear.
For removal procedures, (Refer to 23 - BODY/IN-
TERIOR/REAR VIEW MIRROR - REMOVAL).
OPERATION
The ambient photocell sensor faces forward, to
detect the outside light levels. A second sensor faces
rearward to detect the light level received through
the vehicles back window. When the difference
between the two light levels becomes too great (the
light level received at the rear of the mirror is much
higher than that at the front of the mirror), the mir-
ror begins to darken.
The mirror switch allows the driver a manual con-
trol of whether the automatic dimming feature is
operational. When AUTO is selected a small Light-
Emitting Diode (LED), to the right of the mirror
switch, is illuminated. The automatic dimming fea-
ture will only operate when the ignition switch is in
the On position. The mirror also senses the backup
lamp circuit, and will automatically disable its self-
dimming feature whenever the transmission gear
selector is in the Reverse position.
NOTE: The mirror always defaults to an ON state
upon ignition.
The driver side automatic dimming mirror is stan-
dard with the automatic dimming inside mirror. The
signal to control the dimming of that mirror is gen-
erated by the automatic day/night inside rear view
mirror circuitry. That signal is then delivered to the
driver side outside rear view mirror on a hard wired
circuit.
The automatic day/night mirror cannot be
repaired. If faulty or damaged, the entire inside rear
view mirror assembly must be replaced.
DIAGNOSIS AND TESTING
AUTOMATIC DAY / NIGHT MIRROR
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.
(1) Check the fuse in the intelligent power module.
If OK, go to Step 2. If not OK, repair the shorted cir-
cuit or component as required and replace the faulty
fuse.
(2) Turn the ignition switch to the On position.
Check for battery voltage at the fuse in the intelli-
gent power module. If OK, go to Step 3. If not OK,
repair the open circuit to the ignition switch as
required.
(3) Unplug the wire harness connector from the
automatic day/night mirror. Check for battery voltage
at the fused ignition switch output circuit cavity of
the automatic day/night mirror wire harness connec-
tor. If OK, go to Step 4. If not OK, repair the open
circuit to the junction block as required.
(4) Turn the ignition switch to the Off position.
Check for continuity between the ground circuit cav-
ity of the automatic day/night mirror wire harness
connector and a good ground. There should be conti-
nuity. If OK, go to Step 5. If not OK, repair the cir-
cuit to ground as required.
(5) Turn the ignition switch to the On position. Set
the parking brake. Place the transmission gear selec-
tor lever in the Reverse position. Check for battery
voltage at the backup lamp switch output circuit cav-
ity of the automatic day/night mirror wire harness
connector. If voltage is present, reinstall the auto-
matic day/night mirror wire harness connector and
go to Step 6. If not OK, repair the open circuit as
required.
(6) Place the transmission gear selector lever in
the Neutral position. Place the automatic day/night
mirror switch in the On (LED in the switch is
lighted) position. Cover the forward facing ambient
photocell sensor to keep out any ambient light.
NOTE: The ambient photocell sensor must be cov-
ered completely, so that no light reaches the sen-
sor. Use a finger pressed tightly against the sensor,
or cover the sensor completely with electrical tape.
(7) Shine a light into the rearward facing head-
lamp photocell sensor. The automatic day/night mir-
ror should darken. The automatic day/night mirror
should darken within 2 minutes if testing for the
first time. For immediate response, turn the vehicle
8N - 28 POWER MIRRORSRS

WARNING: Wait two minutes for the airbag system
reserve capacitor to discharge before beginning
any airbag system or component service. Failure to
do so may result in accidental airbag deployment,
personal injury or death.
(4) Clean powder residue from interior of vehicle
(Refer to 8 - ELECTRICAL/RESTRAINTS - STAN-
DARD PROCEDURE - SERVICE AFTER AN AIR-
BAG DEPLOYMENT).
(5) Remove instrument panel (Refer to 23 - BODY/
INSTRUMENT PANEL/INSTRUMENT PANEL
ASSEMBLY - REMOVAL).
(6) Remove all reusable components from the
upper instrument panel and transfer to the new
instrument panel.
UNDEPLOYED AIRBAG
(1) Open hood.
(2) Disconnect and isolate the battery negative
cable.
(3)
WARNING: Wait two minutes for the airbag system
reserve capacitor to discharge before beginning
any airbag system or component service. Failure to
do so may result in accidental airbag deployment,
personal injury or death.
(4) Remove center console bin between front seats.
(5) Remove left front door sill plate using a trim
stick (special tool #C-4755) or equivalent, and gently
prying up on sill plate.
(6) Remove left cowl panel using a trim stick or
equivalent, and gently prying out on cowl panel.
(7) Remove four screws to lower steering column
cover and remove cover.
(8) Unsnap parking brake lever from knee blocker
reinforcement.
(9) Remove Data Link Connector (DLC) from knee
blocker.
(10) Remove screws to knee blocker.
(11) Unsnap left A-pillar lower extension trim
using a trim stick or equivalent.
(12) Remove three left side instrument panel A-pil-
lar retaining bolts and loosen the instrument panel
roll down bolt.
(13) Remove four nuts at brake pedal support
bracket to instrument panel.
(14) Using a trim stick or equivalent, gently pry
off left side upper A-pillar trim.
(15) Remove six screws and two wiring connectors
to lower instrument panel cubby bin at bottom of
center stack.
(16) Remove two left side nuts at instrument panel
center stack support to floor.(17) Remove two right side nuts at instrument
panel center stack support to floor.
(18) Remove right front door sill plate using a trim
stick or equivalent, and gently prying up on sill
plate.
(19) Remove right cowl panel using a trim stick or
equivalent, and gently prying out on cowl panel.
(20) Using a trim stick or equivalent, gently pry
out on right instrument panel end cap.
(21) Unsnap right A-pillar lower extension trim
using a trim stick or equivalent.
(22) Remove three right side instrument panel
A-pillar retaining bolts and loosen the instrument
panel roll down bolt.
(23) Using a trim stick or equivalent, gently pry
off right side upper A-pillar trim.
(24) Open glove box, pinch in sides and roll down
towards floor. With a firm pull, snap glove box door
off hinges and remove.
(25) Using a trim stick or equivalent, gently pry
up on rear of instrument panel top cover and then
pull rearward and out.
(26) Using a trim stick or equivalent, gently pry
off the filler bezel just above the cup holder to expose
the lower screws to center bezel.
(27) Remove two screws and then using a trim
stick or equivalent, gently pry off instrument panel
center bezel.
(28) Remove center bezel wiring connectors to
HVAC control and switch assembly (hazard, rear
wiper/washer, heated seats) and remove bezel.
(29) Slide cup holder assembly from instrument
panel.
(30) Remove nineteen screws to right lower instru-
ment panel trim (glove box surround), unplug glove
box lamp wire connector, and remove panel.
(31) Remove four screws and wiring connectors to
radio and remove radio.
(32) Remove one far left instrument panel speaker
retaining screw.
(33) Remove four screws along top front edge of
instrument panel cover/pad.
(34) Remove seven lower instrument panel cover/
pad retaining screws starting from right of vehicle
and only removing these seven, not all of them.
(35) Remove six upper fence line instrument panel
retaining bolts.
(36) Roll back instrument panel just enough to
increase access to the passenger airbag retaining
bolts at the reinforcement. Lift the instrument panel
up slightly so as not to damage the air distribution to
HVAC unit seal.
(37) Disconnect the passenger airbag electrical
connector. Using a trim stick or equivalent, gently
pry electrical connector off of instrument panel rein-
forcement.
RSRESTRAINTS8O-31
PASSENGER AIRBAG (Continued)

(28) Install two right side nuts at instrument
panel center stack support to floor.
(29) Install two left side nuts at instrument panel
center stack support to floor.
(30) Connect the two wiring connectors to lower
instrument panel cubby bin at bottom of center stack
and install six screws.
(31) Align left side upper A-pillar trim over retain-
ing slots and firmly snap into place.
(32) Install four nuts at brake pedal support
bracket to instrument panel.
(33) Align left A-pillar lower extension trim over
retaining slots and firmly snap into place.
(34) Install knee blocker and retaining screws.
(35) Install Data Link Connector (DLC) into bot-
tom of knee blocker.
(36) Align parking brake lever and snap into place
on knee blocker reinforcement.
(37) Install lower steering column cover and four
retaining screws
(38) Align left cowl panel over retaining slots and
firmly snap into place.
(39) Align left front door sill plate over retaining
slots and firmly snap into place.
(40) Install center console bin between front seats.
WARNING: Do not connect the battery negative
cable (Refer to 8 - ELECTRICAL/RESTRAINTS -
DIAGNOSIS AND TESTING - AIRBAG SYSTEM). Per-
sonal injury or death may result if the system test
is not performed first.
(41) Close hood.
(42) Verify system and vehicle operation.
PASSENGER AIRBAG
DISABLED INDICATOR
DESCRIPTION
Vehicles equipped with the Occupant Classification
System (OCS) include a Passenger Airbag Disabled
(PAD) indicator (Fig. 40) which is located in the
instrument panel center stack, above the radio. The
PAD indicator is present only in vehicles equipped
with the OCS.The PAD indicator consists of a molded plastic
housing with an integral connector at the back. An
amber Light Emitting Diode (LED) behind the lens
causes the ªPASS AIR BAG OFFº text and icon to
appear silhouetted against an amber field through
the translucent lens when the indicator is illumi-
nated from behind by the LED. The PAD indicator is
available for separate service replacement.
OPERATION
In vehicles equipped with the Occupant Classifica-
tion System (OCS), the Passenger Airbag Disabled
(PAD) indicator gives an indication when the passen-
ger airbag and seat belt tensioner deployment cir-
cuits are disabled by the Occupant Restraint
Controller (ORC). The PAD indicator is controlled by
a transistor within the ORC through a hard wired
output based upon ORC programming and electronic
occupant classification messages received by the ORC
over the Programmable Communications Interface
(PCI) data bus from the Occupant Classification
Module (OCM). The PAD indicator Light Emitting
Diode (LED) is completely controlled by the ORC.
The LED receives a battery current input on the
fused ignition switch output (RUN/START) circuit.
Therefore, the LED will always be OFF when the
ignition switch is in any position except ON or
START. The LED only illuminates when it is pro-
vided a path to ground by the ORC transistor. The
ORC will turn on the PAD indicator for the following
reasons:
²Bulb Test- Each time the ignition switch is
turned to the ON position the PAD indicator is illu-
minated for about six seconds.
²Child Seat Detected Occupant Classifica-
tion Message- Each time the ORC receives a mes-
sage from the OCM indicating a child seat has been
detected in the passenger front seat, the passenger
airbag and seat belt tensioner deployment circuits
are deactivated and the PAD indicator will be illumi-
nated. The indicator remains illuminated until the
ORC receives an occupant classification message
indicating that:
²The passenger front seat is empty.
²The seat is occupied by a load equal to or
greater than a fifth percentile female.
²OR,Until the ignition switch is turned to the
OFF position, whichever of these three occurs first.
²Load Less Than Fifth Percentile Female
Occupant Classification Message- Each time the
ORC receives a message from the OCM indicating
that a load less than a fifth percentile female has
been detected in the passenger front seat, the pas-
senger airbag and seat belt tensioner deployment cir-
cuits are deactivated and the PAD indicator will be
illuminated. The indicator remains illuminated until:
Fig. 40 PASSENGER AIRBAG DISABLED (PAD)
INDICATOR
RSRESTRAINTS8O-33
PASSENGER AIRBAG (Continued)