2004 JEEP GRAND CHEROKEE ignition

²Do not let anyone sit in the vehicle when it is on a jack.
²Do not get under the vehicle when it is on a jack.
²Only use the jack in the positions indicated.
²If working on or near a roadway, be extremely careful
of motor traffic.
JUMP STARTING PROCEDURE
NOTE:Check the charge indicator on top of the battery.
If the indicator is light or yellow, replace the battery.
1. Wear eye protection and remove any metal jewelry
such as watch bands or bracelets that might make an
unintended electrical contact.
2. When boost is provided by a battery in another
vehicle, park that vehicle within booster cable reach but
without letting the vehicles touch. Set the parking brake,
place the transmission in P (Park), and turn the ignition
to OFF for both vehicles.3. Turn off the heater, radio and all unnecessary electrical
loads.
4. Connect one end of a jumper cable to the positive
terminal of the discharged battery. Connect the other end
of the same cable to the positive terminal of the booster
battery.
5. Connect the other cable, first to the negative terminal
of the booster battery and then connect the other end to
a non-paint metal surface on the engine of the vehicle
with the discharged battery. Make sure you have a good
contact on the engine.
6. Start the engine in the vehicle which has the booster
battery, let the engine idle a few minutes, then start the
engine in the vehicle with the discharged battery.
7. When removing the jumper cables, reverse the above
sequence exactly. Be careful of the moving belts and fan.
246 WHAT TO DO IN EMERGENCIES

EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle's emissions control system.
Failure to pass could prevent vehicle registration.
For states which have an I/M (Inspection and
Maintenance) requirement, this check verifies the
following: the MIL (Malfunction Indicator Lamp)
is functioning and is not on when the engine is running,
and that the OBD (On Board Diagnostic) system is ready
for testing.
Normally, the OBD system will be ready. The OBD
system maynotbe ready if your vehicle was recently
serviced, if you recently had a dead battery, or a battery
replacement. If the OBD system should be determined
not ready for the I/M test, your vehicle may fail the test.Your vehicle has a simple ignition key actuated test
which you can use prior to going to the test station. To
check if your vehicle's OBD system is ready, you must do
the following:
1. Insert your ignition key into the ignition switch.
2. Turn the ignition to the ON position, but do not crank
or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn your key to the ON position, you
will see your MIL symbol come on as part of a normal
bulb check.
5. Approximately 15 seconds later, one of two things will
happen:
a. The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn off the
254 MAINTAINING YOUR VEHICLE

ignition key or start the engine. This means that your
vehicle's OBD system isnot readyand you shouldnot
proceed to the I/M station.
b. The MIL will not flash at all and will remain fully
illuminated until you turn off the ignition key or start
the engine. This means that your vehicle's OBD system
isreadyand you can proceed to the I/M station.
If your OBD system isnot ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your
vehicle as you normally would in order for your OBD
system to update. A recheck with the above test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle's OBD system is
ready or not ready, if the MIL symbol is illuminated
during normal vehicle operation, you should have yourvehicle serviced before going to the I/M station. The I/M
station can fail your vehicle because the MIL symbol is on
with the engine running.
REPLACEMENT PARTS
Use of genuine Mopartparts for normal/scheduled
maintenance and repairs is highly recommended to in-
sure the designed performance. Damage or failures
caused by the use of non-Mopartparts for maintenance
and repairs will not be covered by the manufacturer's
warranty.
DEALER SERVICE
Your dealer has the qualified service personnel, special
tools and equipment to perform all service operations in
an expert manner. Service Manuals are available which
include detailed service information for your vehicle.
Refer to these manuals before attempting any procedure
yourself.
MAINTAINING YOUR VEHICLE 255
7

To minimize the possibility of catalytic converter dam-
age:
²Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
²Do not try to start the engine by pushing or towing the
vehicle.
²Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing.
²Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating condi-
tions.
²Do not allow vehicle to run out of fuel.NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
Crankcase Emission Control System
Proper operation of this system depends on freedom
from sticking or plugging due to deposits. As vehicle
mileage builds up, the PCV valve and passages may
accumulate deposits. If a valve is not working properly,
replace it with a new valve. DO NOT ATTEMPT TO
CLEAN THE OLD PCV VALVE!
Check ventilation hose for indication of damage or
plugging deposits. Replace if necessary.
Fuel Filter
A plugged fuel filter can cause hard starting or limit the
speed at which a vehicle can be driven. Should an
excessive amount of dirt accumulate in the fuel tank,
frequent replacement of the fuel filter which is mounted
in the fuel tank may be necessary.
MAINTAINING YOUR VEHICLE 263
7

Cavity Fuse Description
1 Spare
2 Spare
3 10 Amp Red Headlight High Beam Left
4 15 Amp Lt. Blue Flasher
5 25 Amp Natural Radio/Amplifier
6 15 Amp Lt. Blue Park Lights
7 10 Amp Red Interior Lights
8 15 Amp Lt. Blue Overhead Console, Rear
Wiper, IP Lights, Rear Flip-
per Glass Solenoid
9 20 Amp Yellow Power Outlets
10 20 Amp Yellow Adjustable Pedals
11 10 Amp Red Rear Window Defroster In-
dicator
12 10 Amp Red Auto Shut Down Relay/
9Fuel9Cavity Fuse Description
13 Spare
14 10 Amp Red Headlight Low Left
15 10 Amp Red Headlight Low Right
16 10 Amp Red Headlight High Right
17 10 Amp Red Instrument Cluster, Diag-
nostic Connector
18 30 Amp Trailer Tow
19 10 Amp Red Antilock Brakes
20 10 Amp Red Ignition Run
21 10 Amp Red Ignition Run/Start - PDC
22 10 Amp Red Ignition Run/Start
23 15 Amp Lt. Blue Brake Switch
24 15 Amp Lt. Blue Fog Lamps
25 20 Amp Yellow Accessory Delay Relay
(Sunroof)
MAINTAINING YOUR VEHICLE 287
7

Cavity Fuse Description
26 15 Amp Lt. Blue Cigar
27 15 Amp Lt. Blue Rear Fog Lamps (If
Equipped)
28 10 Amp Red Body Control Module, Acc/
Run
29 10 Amp Red Rear Wiper Switch, Washer
Motors
30 15 Amp Lt. Blue Radio
31 10 Amp Red Ignition Start
32 10 Amp Red Ignition Run/Start- Airbag
33 10 Amp Red Ignition Run/Only - Airbag
C1 20 Amp Wiper (Circuit Breaker)
C2 20 Amp Seats (Circuit Breaker)
C3 SpareUnderhood Fuses (Power Distribution Center)
Your vehicle is equipped with an electrical power distri-
bution center located in the engine compartment near the
battery. This power center houses plug-in ªCartridgeº
fuses which replace in-line fusible links. The power
center also contains ªMiniº fuses and plug-in full and
mini ISO relays. A label inside the latching cover of the
288 MAINTAINING YOUR VEHICLE

center identifies each component for ease of replacement,
if necessary. ªCartridgeº fuses and relays can be obtained
from your authorized dealer.
VEHICLE STORAGE
If you are leaving your vehicle dormant for more than 21
days you may want to take steps to protect your battery.
You may:
²Remove Cartridge fuse #15 in the Power Distribution
Center labeled Ignition-Off Draw (IOD).
²Store the removed IOD fuse in the Power Distribution
Center location #11 labeled ªIOD Storage.º
²Or, disconnect the negative cable from the battery.
²Anytime you store your vehicle, or keep it out of
service (i.e. vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting. This willinsure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.
REPLACEMENT BULBS
Interior Lights Bulb Type
A/C Heater.................... NotServiceable
Ashtray Receiver Light.................... 161
Climate Control
(Dual Zone Automatic)............ NotServiceable
Climate Control (Manual A/C)................ 74
Front Reading........................... 192
Glove Box Light......................... 194
Overhead Console........................ 192
Radio................................ ASC
Rear Cargo Light.......................214±2
Passenger Assist Handle Lights.............214±2
Lighted Vanity Mirror *.............. P/N6501966
MAINTAINING YOUR VEHICLE 289
7

Gasoline.............................. 221
Gasoline, Reformulated................... 222
Gasoline/Oxygenate Blends................ 222
Gauges
Coolant Temperature.................... 131
Fuel................................ 133
Odometer........................... 132
Oil Pressure.......................... 130
Speedometer......................... 129
Tachometer.......................... 129
Voltmeter............................ 129
Gear Ranges........................... 181
General Information...................... 219
Glass Cleaning.......................... 284
Glove Compartment...................... 116
Hazard Warning Flasher................... 236
Head Restraints.......................... 64
Head Rests............................. 64Headlights............................. 77
High Beam........................... 129
On With Wipers........................ 77
Heated Mirrors.......................... 61
Heated Seats............................ 71
Heater, Engine Block..................... 178
Holder, Cup........................... 116
Homelink Transmitter.................... 106
Hood Release........................... 74
Hoses................................ 274
Identifying Your Engine................251,252
Ignition
Key ................................. 11
Illuminated Entry........................ 15
Infant Restraint.......................... 44
Inflation Pressure Tires.................... 212
Information Center, Vehicle................. 90
Inside Rearview Mirror.................... 59
334 INDEX