2021 JEEP GRAND CHEROKEE fuel pump

Enhanced Accident Response System
In the event of an impact, if the communica-
tion network remains intact, and the power
remains intact, depending on the nature of
the event, the ORC will determine whether to
have the Enhanced Accident Response Sys-
tem perform the following functions:
• Cut off fuel to the engine (If Equipped)
• Cut off battery power to the electric motor
(If Equipped)
• Flash hazard lights as long as the battery
has power
• Turn on the interior lights, which remain on
as long as the battery has power or for 15
minutes from the intervention of the En-
hanced Accident Response System.
• Unlock the power door locks.
Your vehicle may also be designed to perform
any of these other functions in response to
the Enhanced Accident Response System:
• Turn off the Fuel Filter Heater, Turn off the
HVAC Blower Motor, Close the HVAC Circu-
lation Door• Cut off battery power to the:
– Engine
– Electric Motor (if equipped)
– Electric power steering
– Brake booster
– Electric park brake
– Automatic transmission gear selector
– Horn
– Front wiper
– Headlamp washer pump
NOTE:
After an accident, remember to cycle the
ignition to the STOP (OFF/LOCK) position
and remove the key from the ignition switch
to avoid draining the battery. Carefully check
the vehicle for fuel leaks in the engine com-
partment and on the ground near the engine
compartment and fuel tank before resetting
the system and starting the engine. If there
are no fuel leaks or damage to the vehicle
electrical devices (e.g. headlights) after an
accident, reset the system by following the
procedure described below. If you have any
doubt, contact an authorized dealer.
Enhanced Accident Response System Reset
Procedure
In order to reset the Enhanced Accident Re-
sponse System functions after an event, the
ignition switch must be changed from igni-
tion START or ON/RUN to ignition OFF. Care-
fully check the vehicle for fuel leaks in the
engine compartment and on the ground near
the engine compartment and fuel tank before
resetting the system and starting the engine.
Maintaining Your Air Bag System
WARNING!
• Modifications to any part of the air bag
system could cause it to fail when you
need it. You could be injured if the air
bag system is not there to protect you.
Do not modify the components or wiring,
including adding any kind of badges or
stickers to the steering wheel hub trim
cover or the upper passenger side of the
instrument panel. Do not modify the
front bumper, vehicle body structure, or
add aftermarket side steps or running
boards.
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WARNING!
fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
• Do not leave the key fob in or near the
vehicle, or in a location accessible to
children, and do not leave the ignition of
a vehicle equipped with Keyless Enter-
N-Go in the ACC or ON/RUN mode. A
child could operate power windows,
other controls, or move the vehicle.
• Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury
or death.
NOTE:
Engine start up in very low ambient tempera-
ture could result in evident white smoke. This
condition will disappear as the engine warms
up.
CAUTION!
• The engine is allowed to crank as long as
30 seconds. If the engine fails to start
during this period, please wait at least
two minutes for the starter to cool before
repeating start procedure.
• If the “Water in Fuel Indicator Light”
remains on, DO NOT START engine be-
fore you drain the water from the fuel
filters to avoid engine damage. Refer to
“Draining Fuel/Water Separator Filter”
in “Servicing And Maintenance” in your
Diesel Supplement for further informa-
tion, which can be found with your on-
line Owner’s Information.
Automatic Transmission
Start the engine with the transmission gear
selector in the PARK position. Apply the
brake before shifting to any driving range.
Normal Starting
Observe the instrument panel cluster lights
when starting the engine.
NOTE:
Normal starting of either a cold or a warm
engine is obtained without pumping or press-
ing the accelerator pedal
1. Always apply the parking brake.
2. Press and hold the brake pedal while
pushing the ENGINE START/STOP button
once.
NOTE:
A delay of the start of up to five seconds is
possible under very cold conditions. The
"Wait to Start" telltale will be illuminated
during the pre-heat process, When the
engine Wait To Start light goes off the
engine will automatically crank.
CAUTION!
If the “Water in Fuel Indicator Light” re-
mains on, DO NOT START engine before
you drain the water from the fuel filters to
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WARNING!
• Never have any smoking materials lit in
or near the vehicle when the fuel door is
open or the tank is being filled.
• Never add fuel when the engine is run-
ning. This is in violation of most coun-
tries regulations and may cause the
“Malfunction Indicator Light” to turn
on.
• Do not apply any object/cap to the end of
the filler which is not provided for the
car. The use of non-compliant objects/
plugs could cause a pressure increase
inside the tank, resulting in dangerous
situations.
• A fire may result if fuel is pumped into a
portable container that is inside of a
vehicle. You could be burned. Always
place fuel containers on the ground
while filling.
CAUTION!
To avoid fuel spillage and overfilling, do
not “top off” the fuel tank after filling.
Emergency Fuel Filler Door Release
If you are unable to open the fuel filler door,
use the fuel filler door emergency release.
1. Open the liftgate.
2. Push the inboard edge of the left storage
bin to the center, this will pop up the
outboard edge.
3. Grab popped up outboard edge with other
hand to disengage snaps.
4. Remove the storage bin.5. Pull the release cable to open the fuel
door, push the release cable back to the
home position to re-seat the fuel door
latch to the closed position.
NOTE:
If the fuel door does not latch after the
manual release cable has been activated, the
actuator latch should be manually returned to
the closed position.
Storage Bin Location
Release Cable
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2. Insert funnel into same filler pipe opening
as the fuel nozzle.NOTE:
Ensure funnel is inserted fully to hold
flapper door open.
3. Pour fuel into funnel opening.
4. Remove funnel from filler pipe, clean off
prior to putting back in the spare tire kit.
WARNING!
• Never have any smoking materials lit in
or near the vehicle when the fuel door is
open or the tank is being filled.
• Never add fuel when the engine is run-
ning. This is in violation of most coun-
tries regulations and may cause the
“Malfunction Indicator Light” to turn
on.
• Do not apply any object/cap to the end of
the filler which is not provided for the
car. The use of non-compliant objects/
plugs could cause a pressure increase
inside the tank, resulting in dangerous
situations.
• A fire may result if fuel is pumped into a
portable container that is inside of a
vehicle. You could be burned. Always
place fuel containers on the ground
while filling.
CAUTION!
To avoid fuel spillage and overfilling, do
not “top off” the fuel tank after filling.
Fuel Fill Funnel/Spare Tire/Jack And Tools
1 — Cap-Less Fuel Fill Funnel
2 — Jack
3 — Tire Changing Tools
4 — Spare Tire
Emergency Fuel Fill Location
189

CAUTION!
For diesel engines, only use diesel fuel for
motor vehicles in accordance with EN 590
European specifications. The use of other
products or mixtures may damage the en-
gine beyond repair and consequently void
the warranty, due to the damage caused. If
you accidentally introduce other types of
fuel into the tank, do not start the engine.
Empty the tank. If the engine has been run
for even an extremely limited amount of
time, you must not only drain the fuel
tank, but the rest of the supply circuit as
well.
Avoid Using Contaminated Fuel
Fuel that is contaminated by water or dirt can
cause severe damage to the engine fuel sys-
tem. Proper maintenance of the engine fuel
filter and fuel tank is essential. Refer to
“Dealer Service” in “Servicing And Mainte-
nance” in your Owner’s Manual for further
information.
AdBlue® (UREA) — If Equipped
The vehicle is equipped with an UREA injec-
tion system and Selective Catalytic Reduc-
tion to meet emission standards. These two
systems ensure compliance with the diesel
emissions requirements; at the same, they
ensure fuel-efficiency, handling, torque and
power. For messages and system warnings,
refer to the "Warning Lights And Messages" in
the "Getting To Know Your Instrument Panel"
section. AdBlue
®is a very stable product
with a long shelf life. Stored at temperatures
LOWER than 90 °F (32 °C), it has a shelf life
of at least one year. For more information on
the AdBlue
®liquid type, see the “Fluids and
lubricants” in the “Technical specifications”
section. The vehicle is equipped with an
automatic AdBlue
®heating system when the
engine starts allowing the system to work
correctly at temperatures lower than 12 °F
(-11 °C).
NOTE:
• AdBlue
®freezes at temperatures lower
than 12 °F (-11 °C).• Your vehicle is equipped with a AdBlue
®
injection system. You may occasionally
hear an audible clicking noise from under
the vehicle at a stop. This is normal opera-
tion.
• The AdBlue
®pump will run for a period of
time after engine shutdown to purge the
AdBlue
®system. This is normal operation
and may be audible from the rear of the
vehicle.
AdBlue® Storage
AdBlue®is considered a very stable product
with a long shelf life. If AdBlue®is kept in
temperatures between 10° and 90°F
(-12° and 32°C), it will last a minimum of
one year.
AdBlue
®is subject to freezing at the lowest
temperatures. For example, AdBlue®may
freeze at temperatures at or below 12° F
(-11° C). The system has been designed to
operate in this environment.
STARTING AND OPERATING
190

Cavity Cartridge Fuse Micro Fuse Description
F03 60 Amp Yellow – Radiator Fan — If Equipped
(*)
F05 40 Amp Green – Compressor for Air Suspension — If Equipped
(*)
F06 40 Amp Green – Anti-lock Brakes/Electronic Stability Control Pump
(*)
F07 30 Amp Pink – Starter Solenoid
(*)
F09 30 Amp Pink – Diesel Fuel Heater (Diesel Engine Only)/Brake Vacuum Pump
(*)
F10 40 Amp Green – Body Controller/Exterior Lighting #2
(*)
F11 30 Amp Pink – Trailer Tow Electric Brake — If Equipped
(*)
F12 40 Amp Green – Body Controller #3/Power Locks
(*)
F13 40 Amp Green – Blower Motor Front
(*)
F14 40 Amp Green – Body Controller #4/Exterior Lighting #1
(*)
F15 40 Amp Green – LTR (Low Temperature Radiator) Engine Cooling Pump — If Equipped
(*)
F17 30 Amp Pink – Headlamp Washer — If Equipped
F19 20 Amp Blue – Headrest Solenoid — If Equipped
F20 30 Amp Pink – Passenger Door Module
211

Cavity Cartridge Fuse Micro Fuse Description
F63 – 20 Amp Yellow Ignition Coils / Ignition Coil Capacitors / Short Runner Valve Actuator — If
Equipped (Gas) Urea Heater (Diesel)
(*)
F64 – 25 Amp Clear Fuel Injectors/Powertrain
(*)
F66 – 10 Amp Red Sunroof/Rain Sensor/Inside Rear View Mirror / USB Port / DSCR / DTV —
If Equipped
F67 – 15 Amp Blue CD/DVD/UCI Port/USB Charging Port
F68 – 20 Amp Yellow Rear Wiper Motor
F69 – 15 Amp Blue Spotlight Feed — If Equipped
F70 – 20 Amp Yellow Fuel Pump Motor
(*)
F71 – 30 Amp Green Amplifier/ANCM — If Equipped
F72 – 10 Amp Red ECM
(*)
F73 – 15 Amp Blue HID Headlamp RH — If Equipped
(*)
F75 – 10 Amp Red Dual Batt Control — If Equipped
F76 – 10 Amp Red Anti-lock Brakes/Electronic Stability Control
(*)
F77 – 10 Amp Red Drivetrain Control Module/Front Axle Disconnect Module — If Equipped
(*)
F78 – 10 Amp Red Engine Control Module/Electric Power Steering
(*)
IN CASE OF EMERGENCY
214

Reformulated Gasoline
Many areas of the country require the use of
cleaner burning gasoline referred to as “Re-
formulated Gasoline”. Reformulated gaso-
line contains oxygenates and are specifically
blended to reduce vehicle emissions and im-
prove air quality.
The use of reformulated gasoline is recom-
mended. Properly blended reformulated
gasoline will provide improved performance
and durability of engine and fuel system
components.
Do Not Use E-85 In Non-Flex Fuel
Vehicles
Non-Flex Fuel Vehicles (FFV) are compatible
with gasoline containing up to 15% ethanol
(E-15). Use of gasoline with higher ethanol
content may void the New Vehicle Limited
Warranty.If a Non-FFV vehicle is inadvertently fueled
with E-85 fuel, the engine will have some or
all of these symptoms:
• Operate in a lean mode.
• OBD II Malfunction Indicator Light on.
• Poor engine performance.
• Poor cold start and cold drivability.
• Increased risk for fuel system component
corrosion.
CNG And LP Fuel System Modifications
Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid
Propane (LP) may result in damage to the
engine, emissions, and fuel system compo-
nents. Problems that result from running
CNG or LP are not the responsibility of the
manufacturer and may void or not be covered
under the New Vehicle Limited Warranty.
Materials Added To Fuel
Indiscriminate use of fuel system cleaning
agents should be avoided. Many of these
materials intended for gum and varnish re-
moval may contain active solvents or similar
ingredients. These can harm fuel system gas-
ket and diaphragm materials.
Fuel Icon Identification Compliant To
EN16942
The following symbols make it easier to rec-
ognize the correct type of fuel to be used on
your vehicle. Before proceeding with the sup-
ply, check the symbols placed inside the fuel
filler flap (if present) and compare them with
the symbol on the fuel pump (if present).
TECHNICAL SPECIFICATIONS
284