ignition JEEP WRANGLER 2006 TJ / 2.G Workshop Manual

ignition key or start the engine. This means that your
vehicle’s OBD system is not readyand you should not
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
is ready and you can proceed to the I/M station.
If your OBD system is not 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 your vehicle 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 Mopar
parts for normal/scheduled
maintenance and repairs is highly recommended to in-
sure the designed performance. Damage or failures
caused by the use of non-Mopar parts 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.
270 MAINTAINING YOUR VEHICLE

To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing.
•Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating conditions.
•Do not allow vehicle to run out of fuel.
NOTE: Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
Engine Timing Belt — 2.4L Engine
Replace the engine timing belt at the intervals described
in the appropriate maintenance schedule.
Ignition Wiring System — 2.4L Engine
Replace the ignition cables at the intervals described in
the appropriate maintenance schedule.
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.
MAINTAINING YOUR VEHICLE 277
7

Cavity Fuse/Color Description
13 40 Amp Green Accessories
14 Open
15 50 Amp Red IOD
16 Open
17 20 Amp Yellow Power
18 20 Amp Yellow Horn
19 20 Amp Yellow Fog Lights
20 15 Amp Lt. Blue Radio
21 10 Amp Red A/C Clutch
22 25 Amp Natural Ignition Switch
23 20 Amp Yellow Fuel
24 20 Amp Yellow Off Road
25 Open
26 10 Amp Red Accessories
27 20 Amp Yellow MFSW
28 10 Amp Red Clutch OverrideCavity Fuse/Color Description
29 Relay ASD
30 Relay A/C Clutch
31 Relay Transmission
32 Relay Starter
33 Relay ABS
34 Open
35 Relay Fog Lamp
36 Relay Horn
37 Relay Fuel Pump
38 Relay HBL (Rear Window Defroster)
39 Relay Front Differential Locker (Ru- bicon) or High Speed Fan
(2.4L Engines)
40 Relay Rear Differential Locker (Ru- bicon) or Low Speed Fan
(2.4L Engines)
308 MAINTAINING YOUR VEHICLE

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:
•Remove Cartridge fuse #15 in the Power Distribution
Center labeled Ignition-Off Draw (IOD).
•Store the removed IOD fuse in the Power Distribution
Center location #11 labeled “IOD Storage.”
•Or, disconnect the negative cable from the battery.
•Anytime 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 will
insure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.
REPLACEMENT BULBS — IF EQUIPPED
Interior Lights Bulb Type
Auto. Trans. Indicator Light ................. 658
Courtesy Lights, Under Dash (1) .............. 906
Heater Control Lights (2) ................... 194
Rocker Switch Indicator Light
(Rear Window Defogger, and Rear Wash/Wipe) .... **
Soundbar Dome Light ..................... 912
** Bulbs only available from authorized dealer.
Instrument Cluster Bulb Type
Telltale (High Beam) ....................... 74
Illumination ............................ 103
MAINTAINING YOUR VEHICLE 309
7

Miles 48,000 51,000 54,000 57,000 60,000
(Kilometers) (80 000) (85 000) (90 000) (95 000) (100 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months. X X XXX
Rotate the tires. X X X
Inspect the engine air filter element, replace if
necessary. X
Inspect the PCV Valve, and replace if necessary.  X
Replace the ignition cables (2.4L Only). X
Replace the spark plugs. X
Lubricate the steering linkage tie rod ends. X X X X X
Lubricate the steering and suspension ball joints. X X X
Inspect the brake linings. X X
Drain and refill the front and rear axle fluid‡ X X
Inspect manual transmission fluid, add as neces-
sary. X
Drain and refill the automatic transmission fluid,
and change filter.† X
SCHEDULE “B” 325
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Miles 108,000 111,000 114,000 117,000 120,000
(Kilometers) (180 000) (185 000) (190 000) (195 000) (200 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months. X X XXX
Rotate the tires. X X X
Inspect the engine air filter element, replace if
necessary. X
Inspect the PCV Valve, and replace if necessary.  X
Replace the spark plugs. X
Replace the ignition cables (2.4L Only). X
Lubricate the steering linkage tie rod ends. X X X X X
Lubricate the steering and suspension ball joints. X X X
Inspect the brake linings. X X
Drain and refill the front and rear axle fluid‡ X X
Inspect the manual transmission fluid, add as nec-
essary. X
Drain and refill the automatic transmission fluid,
and replace main sump filter.† X
330 SCHEDULE “B”
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Miles 60,000 66,000 72,000 78,000
(Kilometers) (100 000) (110 000) (120 000) (130 000)
[Months] [60] [66] [72] [78]
Change the engine oil and engine oil filter. X X X X
Rotate the tires. X X X X
Inspect the engine air filter element, and replace if nec-
essary. X
Inspect the PCV Valve, and replace if necessary.  X
Replace the ignition cables (2.4L Only). X
Replace the spark plugs. X
Lubricate the steering linkage joints and outer tie rod
ends. XXXX
Lubricate the steering and suspension ball joints. X X
Inspect the brake linings. X
Inspect the drive belt, and replace as needed. X
Inspect the drive belt, and replace as needed. Not re-
quired if belt was previously replaced. X
334 SCHEDULE “A”
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Miles 108,000 114,000 120,000
(Kilometers) (180 000) (190 000) (200 000)
[Months] [108] [114] [120]
Change the engine oil and engine oil filter. X X X
Rotate the tires. X X X
Inspect the engine air filter element, and replace if necessary. X
Replace the ignition cables (2.4L Only). X
Inspect the PCV Valve, and replace if necessary.  X
Replace the spark plugs. X
Lubricate the steering linkage joints and outer tie rod ends. X X X
Lubricate the steering and suspension ball joints. X X
Inspect the brake linings. X
Replace the timing belt (2.4L Only).  X
Inspect the drive belt, and replace as needed. Not required if pre-
viously replaced. X
SCHEDULE “A” 337
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Child Restraint Tether Anchors.............38,39
Climate Control ......................... 172
Clock ................................ 152
Clutch Interlocking Ignition System ........182,187
Compact Disc (CD) Maintenance ............. 171
Compass .............................. 52
Compass Calibration ...................... 54
Compass Variance ........................ 55
Console ............................... 74
Console, Floor ........................... 74
Contract, Service ........................ 342
Converter, Catalytic ...................... 275
Cooling System ......................... 284
Adding Coolant (Antifreeze) .............. 286
Coolant Capacity ...................... 314
Coolant Level ......................... 288
Disposal of Used Coolant ................ 287
Drain, Flush, and Refill .................. 285
Inspection ........................... 284 Points to Remember
.................... 288
Pressure Cap ......................... 287
Selection of Coolant (Antifreeze) .........285,314
Temperature Gauge ..................... 149
Corrosion Protection ..................... 297
Crankcase Emission Control System .......... 277
Cruise Control (Speed Control) ............... 69
Cruise Light ........................... 147
Cup Holder ............................ 72
Customer Assistance ..................... 340
Daytime Running Lights ................... 66
Dealer Service .......................... 270
Defroster, Rear Window ................... 139
Defroster, Windshield .................. 174,177
Delay (Intermittent) Wipers ................. 67
Deploying, Airbag ........................ 32
Diagnostic System, Onboard ................ 268
Dimmer Switch, Headlight .................. 65
350 INDEX

Dimmer Switch........................ 65
Replacing ............................ 310
Switch ............................... 64
Heater ............................... 172
Heater, Engine Block ..................... 184
High Beam Indicator ..................... 148
Hitches Trailer Towing ........................ 238
Holder, Cup ............................ 72
Hood Release ........................... 62
Hoses ............................. 289,290
Hydraulic Clutch Fluid .................... 294
Ignition Cables .............................. 277
Key ................................. 13
Illuminated Entry ........................ 17
Infant Restraint ........................ 34,35
Inflation Pressure Tires .................... 222 Inside Rearview Mirror
.................... 52
Instrument Cluster ....................... 146
Instrument Panel and Controls .............. 145
Instrument Panel Lens Cleaning ............. 301
Interior Appearance Care .................. 300
Interior Fuses .......................... 305
Interior Lights ........................... 64
Intermittent Wipers (Delay Wipers) ............ 67
Introduction ............................. 4
Jack Location ........................... 255
Jack Operation ....................... 254,256
Jacking Instructions ...................... 256
Jump Starting .......................... 258
Key, Programming ........................ 16
Key Release Button ....................... 14
Key, Replacement ........................ 16
Key, Sentry (Immobilizer) ................... 14
354 INDEX