2009 DODGE GRAND CARAVAN fuel pressure

Acceleration SensorsAcceleration Sensors trigger airbag deployment based on
dramatic acceleration change of the vehicle.
Pressure Sensors
Pressure Sensors trigger airbag deployment based on
door cavity pressure changes.
Rollover Sensors
Rollover Sensors trigger airbag deployment in the event
of vehicle rollover and aid the ORC in deploying Side
Airbag Inflatable Curtains (SABIC) for rollover events.
Supplemental Side Airbag Inflatable Curtain
(SABIC) — If Equipped
The ORC deploys the SABIC during a collision with
other vehicles and during collisions where the impact is
confined to a particular area of the vehicle, such as,
collisions with poles, trees or similar objects. In these
events, the ORC will deploy the SABIC only on the
impact side of the vehicle.
NOTE:
The ORC will also detect and protect for rollover
when equipped with SABIC airbags. In a rollover the
SABIC airbags will deploy on both sides of the vehicle.
Enhanced Accident Response System
In the event of an impact causing airbag deployment, the
vehicle communication network intact, and the power
intact, the Enhanced Accident Response System performs
the following functions:
Cuts off fuel to the engine.
Flashes hazard lights as long as the battery has power
or until the ignition key is turned off
Turns on the interior lights, which remain on as long as
the battery has power or until the ignition key is
removed.
Unlocks the doors automatically.
70 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

DefrosterCheck operation by selecting the defrost mode and place
the blower control on high speed. You should be able to
feel the air directed against the windshield. See your
authorized dealer for service if your defroster is
inoperable.
Periodic Safety Checks You Should Make Outside
the Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread. Inspect the tread and sidewall for
cuts and cracks. Check the wheel nuts for tightness.
Check the tires (including spare) for proper pressure.
Lights
Have someone observe the operation of exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Door Latches
Check for positive closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. Also, if gasoline
fumes are detected or if fuel, power steering fluid, or
brake fluid leaks are suspected, the cause should be
located and corrected immediately.
94 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

11. Odometer / Trip Odometer — If Equipped
The odometer shows the total distance the vehicle has
been driven.
U.S. federal regulations require that upon transfer of
vehicle ownership, the seller certify to the purchaser the
correct mileage that the vehicle has been driven. There-
fore, if the odometer reading is changed during repair or
replacement, be sure to keep a record of the reading
before and after the service so that the correct mileage can
be determined.
The trip odometer shows individual trip mileage. To
switch from odometer to trip odometer, press the Trip
Odometer button.
To reset a trip odometer, display the desired trip odom-
eter to be reset then push and hold the button until the
display resets (approximately two seconds).12. Message Display Area
When the appropriate conditions exist, the following
odometer messages will display:
CHAngE OIL
. . . . . . . . . . . . . . . Oil Change Required
HOTOIL . . . . . . . . . . . . . . . Transaxle Oil Temperature
Exceeds Safe Threshold
CRUISE . . . . . . . . . . . . . . . . . . . . . Cruise Control On
door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Door Ajar
gATE . . . . . . . . . . . . . . . . . . . . . . . . . . Lift Gate Ajar
gASCAP . . . . . . . . . . . . . . . . . . . . . . . Fuel Cap Fault
hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hood Ajar
noFUSE . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse Fault
LoCOOL . . . . . . . . . . . . . . . . . . . . . . . . Low Coolant
LoWASH . . . . . . . . . . . . . . . . . . . . Low Washer Fluid
LoW tirE . . . . . . . . . . . . . . . . . . . . . Low Tire Pressure
244 UNDERSTANDING YOUR INSTRUMENT PANEL

21. Vehicle Security Light — If EquippedThis light will flash at a fast rate for approxi-
mately 15 seconds when the vehicle security
alarm is arming and then will flash slowly until
vehicle is disarmed.
22. Airbag Warning Light This light turns on and remains on for four
seconds as a bulb check when the ignition
switch is first turned ON. If the light is not on
during starting, stays on, or turns on while
driving, have the system inspected by an authorized
dealer as soon as possible.
23. Charging System Light This light shows the status of the electrical charg-
ing system. The light should come on when the
ignition switch is first turned ON and remain on briefly
as a bulb check. If the light stays on or comes on while
driving, turn off some of the vehicle’s non-essential electrical devices or increase engine speed (if at idle). If
the charging system light remains on, it means that the
vehicle is experiencing a problem with the charging
system. Obtain SERVICE IMMEDIATELY. See an autho-
rized dealer.
24. Low Fuel Light
When the fuel level reaches approximately 2.0 gal-
lons (7.8 liters) this light will turn on and remain on
until fuel is added.
25. Tire Pressure Monitoring Telltale Light — If
Equipped
Each tire, including the spare (if provided),
should be checked monthly, when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle placard or tire
inflation pressure label. (If your vehicle has tires of a
different size than the size indicated on the vehicle placard
or tire inflation pressure label, you should determine the
proper tire inflation pressure for those tires.) UNDERSTANDING YOUR INSTRUMENT PANEL 249
4

As an added safety feature, your vehicle has been
equipped with a Tire Pressure Monitoring System
(TPMS) that illuminates a low tire pressure telltale when
one or more of your tires is significantly under-inflated.
Accordingly, when the low tire pressure telltale illumi-
nates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and may affect
the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver ’s responsibility to
maintain correct tire pressure, even if under-inflation has
not reached the level to trigger illumination of the TPMS
low tire pressure telltale.Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is not
operating properly. The TPMS malfunction indicator is
combined with the low tire pressure telltale. When the
system detects a malfunction, the telltale will flash for
approximately one minute and then remain continuously
illuminated. This sequence will continue upon subse-
quent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the sys-
tem may not be able to detect or signal low tire pressure
as intended. TPMS malfunctions may occur for a variety
of reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the
TPMS malfunction telltale after replacing one or more
tires or wheels on your vehicle, to ensure that the
replacement or alternate tires and wheels allow the TPMS
to continue to function properly.
250 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION!The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use tire sealant from a can, or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
26. Electronic Stability Program (ESP) Indicator Light
/ Brake Assist System (BAS) Warning Light The malfunction light for the Electronic Stabil-
ity Program (ESP) is combined with Brake
Assist System (BAS). The yellow “ESP/BAS
Warning Light” comes on when the ignition switch is turned to the “ON” position. They should go
out with the engine running. If the “ESP/BAS Warning
Light” comes on continuously with the engine running, a
malfunction has been detected in either the ESP or the
BAS system. If this light remains on after several ignition
cycles, and the vehicle has been driven several miles/
kilometers at speeds greater than 30 mph (48 km/h), see
an authorized dealer as soon as possible.
27. Compass Mini-Trip Computer (CMTC) Reset
Button
Press the reset button to scroll through sub menus (i.e.,
Outside Temperature, Trip Functions: AVG Fuel
Economy, DTE, Elapsed Time, and Units. Press and hold
the reset button for approximately two seconds to reset
the display shown.
NOTE:
For more detailed operation, refer to “Compass
Mini-Trip Computer” later in this section. UNDERSTANDING YOUR INSTRUMENT PANEL 251
4

WARNING! (Continued)
Unequal tire pressures from one side of the ve-
hicle to the other can cause the vehicle to drift to
the right or left.
Always drive with each tire inflated to the recom-
mended cold tire inflation pressure.
Economy
Improper inflation pressures can cause uneven wear
patterns to develop across the tire tread. These abnormal
wear patterns will reduce tread life resulting in a need for
earlier tire replacement. Under-inflation, also increases
tire rolling resistance and results in higher fuel
consumption.
Ride Comfort and Vehicle Stability
Proper tire inflation contributes to a comfortable ride.
Over-inflation produces a jarring and uncomfortable
ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed on the
driver’s side “B” Pillar.
The tire pressure should be checked and adjusted, and
the tires inspected for signs of wear or visible damage, at
least once a month. Use a good quality pocket-type gauge
to check tire pressure. Do not make a visual judgement
when determining proper inflation. Radial tires may look
properly inflated, even when they are under-inflated. CAUTION!
After inspecting or adjusting the tire pressure, al-
ways reinstall the valve stem cap. This will prevent
moisture and dirt from entering the valve stem,
which could damage the valve stem.
STARTING AND OPERATING 361 5

CAUTION! (Continued)
After inspecting or adjusting the tire pressure
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the valve
stem, which could damage the TPMS sensor.
NOTE:
The TPMS is not intended to replace normal tire care
and maintenance, or to provide warning of a tire
failure or condition.
The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
Driving on a significantly under-inflated tire causes
the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling and
stopping ability.
The TPMS is not a substitute for proper tire mainte-
nance, and it is the driver’s responsibility to maintain
correct tire pressure, using an accurate tire pressure
gage, even if under-inflation has not reached the level
to trigger illumination of the “TPMS Warning Lamp.”
Seasonal temperature changes will affect tire pressure,
and the TPMS will monitor the actual tire pressure in
the tire.
Base System
The TPMS uses wireless technology with wheel rim
mounted electronic sensors to monitor tire pressure lev-
els. Sensors, mounted to each wheel as part of the valve
stem, transmit tire pressure readings to the Receiver
Module.
NOTE: It is particularly important for you to check the
tire pressure in all of your tires regularly and to maintain
the proper pressure.
372 STARTING AND OPERATING