Jeep 2014 Patriot Operating and installation instructions

2014 SUSPENSION
Tires & Wheels - Service Information - Com ass & Patriot
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - TIRE AND WHEEL VIBRATION
Tire and wheel imbalance, runout and tire road force variation can cause vehicles
to exhibit steering wheel vibration and/or seat vibration.
VISUAL INSPECTION
Visual inspection of the vehicle is recommended prior to road testing or
performing any other procedure. Raise and support the vehicle. Refer to
HOISTING, STANDARD PROCEDURE .
Inspect for the following:
Verify correct OEM) wheel and tire, as well as presence of wheel weights.

Inspect tires and wheels for damage, mud packing and unusual wear; correct
as necessary.
Check and adjust tire air pressure to the pressure listed on the label attached
to the driver's door opening.
ROAD TEST
Road test vehicle on a smooth road at and near the designated s eed where
legal speed limits allow. Lightly place hands on steering wheel at the 10:00 and
2:00 positions and observe for:
Steering wheel oscillation: clockwise/counterclockwise

Steering wheel high frequency movement: rapid vibration up and down
NOTE: If a Noise & Vibration Analyzer is available, use it to
diagnosis the issue during the road test.
NOTE: If the vehicle has been sitting for an extended eriod of
time it is recommended to drive to warm the tires. This
rocess could eliminate flat s ots that can cause
vibration.
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2014 SUSPENSION Tires & Wheels - Service Information - Com ass & Patriot
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Seat high frequency movement: rapid vibration up and down
To rule out vibrations due to brakes or powertrain:
Lightly apply brakes at the designated speed; if vibration occurs or is
enhanced, vibration is likely due to a brake concern.
Shift transmission into neutral while vibration is occurring; if vibration is
eliminated, vibration is likely due to a powertrain concern refer to
appropriate Service Information .
TIRE/WHEEL BALANCE AND ROAD FORCE VARIATION
Balance the tire and wheel assemblies as necessary, and if wheel balance
equipment is capable, also test for tire and wheel runout and road force variation
following the wheel balancer manufacturer's instructions and using the
information listed in Tire And Wheel Balance. Refer to STANDARD
PROCEDURE. Repeat the road test above to verify the vibration is repaired.
STANDARD PROCEDURE
TIRE AND WHEEL BALANCE
NOTE: If wheel balance equi ment is ca able of testing tire road
force variation and the tire/wheel assemblies are within
s ecification, lace the tires with the greater road force
variation on the rear of the vehicle.
NOTE: Always verify the wheel and tire balance before removing
any wheel weights. If assembly is within s ecification and
weights are not corroded or loose, do not remove
weights. The rocess of removing and adding weight
could damage wheel rotective coating.
NOTE: Balance and road force variation equi ment must be
calibrated and maintained er equi ment manufacturer's
s ecifications.
NOTE: If a tire sealant & inflator kit was used to tem orarily
re air small unctures then the tire must be removed
from wheel and all the sealant must be removed with a
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Fig. 1: Balancing Wheels Using Cone/Collet
Courtesy of CHRYSLER GROUP, LLC
water dam ed cloth before re airing & balancing the
assembly.
NOTE: Some wheels may not have an outer flange. A ly
adhesive weights on mid lane surface to balance.
NOTE: Use of the ro er collet will revent otential damage to
the Chrome Clad wheels.
NOTE:
Balance equi ment could read an incorrect balance result
when measuring Chrome Clad wheels. This is caused by
the equi ments mounting cone/collet contacting the
cladding or the cone/collet is not balanced. A dual-ta er
collet (1) ty e wheel centering tool is recommended as
o osed to a high-ta er cone (2) ty e wheel centering
tool. Always use the manufacturer's recommended
balance equi ment.
Dual-ta er collet ty e (1)
High-ta er cone ty e (2)
Possible obstruction (3)
May not seat ro erly (4)
No obstruction (5)
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Fig. 2: Dynamic Balancing
Courtesy of CHRYSLER GROUP, LLC
For dynamic balancing recommended ), the balance equipment is designed to
indicate the location and amount of weight to be applied to both the inner and
outer rim flanges 2).
Fig. 3: Static Balancing
Courtesy of CHRYSLER GROUP, LLC
Pro erly seated (6)
NOTE: If wheel balance equi ment is ca able of testing tire road
force variation and the tire/wheel assemblies are within
s ecification, lace the tires with the greater road force
variation on the rear of the vehicle.
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For static balancing not recommended ), find the location of the heavy spot
causing the imbalance 1). Counter balance the wheel directly opposite the heavy
spot. Determine weight required to counterbalance the area of imbalance. Place
half of this weight on the inner rim flange and the other half on the outer rim
flange 3) at the predetermined spots.
Aluminum wheels use a different type wheel weight than steel wheels. Be sure to
use the correct wheel weight for the wheel type.
Always verify the balance. When using off-vehicle equipment, remount the tire
and wheel assembly 180 degrees on the balancer spindle and recheck balance.
Balance variation from one spot to the other should not be more than 0.125 ?)
ounce. If variation is more than 0.125 ounce, balancing equipment could be
malfunctioning, or the wrong collet/cone may have been used.
If difficult to balance, break down the tire and wheel assembly and check for
loose debris inside the tire. Prior to disassembly, mark index) the tire at the
valve stem. Use this mark in order to remount the tire in its original orientation
with respect to the wheel.
TIRE AND WHEEL ROTATION
NON-DIRECTIONAL TREAD PATTERN TIRES
NOTE: Refer to the Owner's Manual for rotation schedules.
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Fig. 4: Forward-Cross Tire Rotation Method
Courtesy of CHRYSLER GROUP, LLC
Tires on the front and rear operate at different loads and perform different
steering, driving, and braking functions. For these reasons they wear at unequal
rates and tend to develop irregular wear patterns. These effects can be reduced by
rotating the tires at regular intervals. The benefits of tire rotation are:
Increase tread life
Maintain traction levels
A smooth, quiet ride
The suggested method of tire rotation is shown in this graphic. Other rotation
methods can be used, but they will not provide all the tire longevity benefits.
DIRECTIONAL TREAD PATTERN TIRES
Some vehicles may be fitted with special high-performance tires having a
directional tread pattern. These tires are designed to improve traction on wet
pavement. To obtain the full benefits of this design, the tires must be installed so
that they rotate in the correct direction. This is indicated by arrows on the tire
sidewalls.
When being installed, extra care is needed to ensure that this direction of rotation
is maintained.
REMOVAL
ALUMINUM WHEEL
1.
Raise and support the vehicle so that tire and wheel assembly clears ground
CAUTION: Only the four-tire rotation may be used on vehicles
equi ed with tire ressure monitoring (TPM) due
to sensors being resent in the four road wheels
and not in the s are.
NOTE: Only the four-tire rotation method may be used if the
vehicle is equi ed with a com act or tem orary s are
tire.
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level. Refer to HOISTING, STANDARD PROCEDURE .
Fig. 5: Tire And Wheel Mounting
Courtesy of CHRYSLER GROUP, LLC
2. Remove the five wheel mounting lug) nuts 3) from the studs.
3. Remove the tire and wheel assembly 1) from the hub.
4. If the wheel center cap requires removal, tap it out the front of the wheel
using a soft head tool applied to the rear of the cap. Do not attem t to ry
it out from the front, damage to the wheel or center ca will occur .
STEEL WHEEL
1. Raise and support the vehicle so that tire and wheel assembly clears ground
level. Refer to
HOISTING, STANDARD PROCEDURE
.
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Fig. 6: Tire And Wheel Mounting
Courtesy of CHRYSLER GROUP, LLC
2. Remove the five wheel mounting lug) nuts 3) from the wheel studs. While
removing the nuts, hold the center cap 2) in place so it doesn't fall off when
the last nut is removed.
3. Remove the center cap 2) using care not to let the tire and wheel assembly
1) fall off the vehicle.
4. Remove the tire and wheel assembly 1) from the hub.
INSTALLATION
ALUMINUM WHEEL
CAUTION: When removing the bolt-on center ca (2), do
not attem t to ry the center ca off the wheel.
It is held on by the wheel mounting nuts.
WARNING: Installing wheels without good metal-to-metal
contact with the mounting surface could cause
loosening of the wheel mounting (lug) nuts. This
could adversely affect the safety and handling of
the vehicle.
NOTE: Never use oil or grease on studs or wheel mounting (lug)
nuts.
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Fig. 7: Tire And Wheel Mounting
Courtesy of CHRYSLER GROUP, LLC
1. Clean the wheel mounting surfaces, removing any build-up of corrosion. It
is important to have good metal-to-metal contact between the wheel and
vehicle.
2. Position the tire and wheel assembly 1) on the wheel mounting studs using
the hub pilot as a guide. Place and hold the wheel flush up against the
mounting surface.
3. Install and lightly snug all five wheel mounting lug) nuts 3). Do not
tighten at this time .
4. If applicable, install the wheel center cap.
5.
Lower the vehicle.
NOTE: Always use the original (OEM) style wheel mounting
(lug) nuts. Do not use re lacement arts of lesser
quality or substitute design.
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Fig. 8: Wheel Tightening Sequence
Courtesy of CHRYSLER GROUP, LLC
6.
Progressively tighten all wheel mounting nuts in the proper sequence shown.
Tighten nuts to a final torque of 125 N.m 92 ft. lbs.).
STEEL WHEEL
1. Clean the wheel mounting surfaces, removing any build-up of corrosion. It
is important to have good metal-to-metal contact between the wheel and
vehicle.
WARNING: Installing wheels without good metal-to-metal
contact with the mounting surface could cause
loosening of the wheel mounting (lug) nuts. This
could adversely affect the safety and handling of
the vehicle.
NOTE: Never use oil or grease on studs or wheel mounting (lug)
nuts.
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Fig. 9: Tire And Wheel Mounting
Courtesy of CHRYSLER GROUP, LLC
2. Position the tire and wheel assembly 1) on the wheel mounting studs using
the hub pilot as a guide. Place and hold the wheel flush up against the
mounting surface.
3. Install the center cap 2) over the studs.
4. Install and lightly snug all five wheel mounting lug) nuts 3). Do not
tighten at this time .
5.
Lower the vehicle.
NOTE: Always use the original (OEM) style wheel mounting
(lug) nuts. Do not use re lacement arts of lesser
quality or substitute design.
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Fig. 10: Nut Tightening Sequence
Courtesy of CHRYSLER GROUP, LLC
6. Progressively tighten all wheel mounting lug) nuts in the proper sequence
shown. Tighten the nuts to a final torque of 125 N.m 92 ft. lbs.).
SPECIAL TOOLS
SPECIAL TOOLS
TIRE PRESSURE MONITORING
DESCRIPTION
1 - BOLT-ON WHEEL COVER
8677 - Remover, Ball Joint
Originally Shipped In Kit
Number s) 8685, 8685CC,
8712, 9973, 9974, 9975.)
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DESCRIPTION
The Tire Pressure Monitoring TPM) system monitors air pressure in the four
road tires excludes spare). Pressure in the spare tire is not monitored.
There are two tire pressure monitoring systems available, a base system and a
premium system. The base system does not specify how many tires are low or
where they are located. The premium system does so.
The Base TPM system consists of tire pressure monitoring sensors attached to
each road wheel through the valve stem mounting hole, a central receiver module
WCM) and an indicator lamp.
The Premium TPM system consists of tire pressure monitoring sensors attached
to each road wheel through the valve stem mounting hole, a wireless control
module WCM) three wheel sensor transponders located in three of the four
wheel wells, an electronic display, and an indicator lamp.
The receiver circuit for the TPM system is integrated into the WCM for non-
remote start vehicles. For factory installed remote start vehicles, the remote start
antenna is external to the WCM. The WCM can also include the Remote Keyless
Entry RKE) receiver, Remote Start if equipped), and the Sentry Key
Immobilizer SKIM) receiver. All four receivers share a number of common
components. The WCM decodes the RF signals transmitted by each of the
vehicle's tire pressure sensors. The decoded information is used to determine if
"warning" or "fault" conditions exist within the TPM system.
Upon detection of a warning or fault condition, the WCM will send a request to
the module that controls the indicator lamp and the text display if equipped with
the Premium system) via the vehicle bus system to illuminate or flash the
indicator lamp. Also, upon detection of a warning or fault condition, the
electronic display will send a request to sound the "chime".
The WCM will store all warning and fault conditions, placard pressure values
and low-pressure threshold values lamp ON and OFF) in memory that can be
accessed through diagnostic communication. If new sensors are introduced to the
vehicle, the data stored for the sensor being replaced will be deleted.
The WCM will store all wheel sensor ID's and locations and faults in memory
that can be accessed through diagnostic communication. All other data values
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transmitted from each active wheel sensor not the spare tire) shall be stored in
the WCM memory.
The WCM automatically learns and stores the sensor IDs while driving "within
10 minutes continuously above 15 mph 24 km/h)" after a sensor has been
replaced. The learning sequence will initiate when the vehicle has been stopped
for more than 20 minutes.
OPERATION
OPERATION
For both the premium and base TPM, the recommended "Placard Pressure",
"Low-pressure Threshold" and "Hysteresis Pressure Values" for the tires
installed on the vehicle, are stored in the WCM non-volatile memory during the
initial Manufacturing Plant Process, or during a service procedure, as required.
To determine the pressure thresholds for a vehicle, refer to the Tire Inflation
Pressure Placard) Label, and then apply the placard pressure to the following
table. The Low Pressure OFF Threshold is defined as the Low Pressure ON
Threshold plus the Hysteresis Pressure Value.
For further information, refer to the Owners Manual or the Appropriate
Diagnostic Information.
BASE TIRE PRESSURE MONITORING
The tire pressure monitoring system TPMS) is designed to operate without loss
of function for all OEM tire construction for this vehicle. Sensors, mounted to
each road wheel as part of the valve stem, transmit an RF signal indicating their
individual pressure to a receiver located in the Wireless Control Module WCM),
commonly referred to as the Sentry Key Remote Entry Module SKREEM). On a
Domestic vehicle, the TPM sensor operates on a 315 MHz radio frequency.
Export vehicle sensors operate on a 433 MHz radio frequency. These
transmissions occur approximately once every minute at speeds over 15 mph 24
km/h). For more information on sensors, refer to
SENSOR, TIRE PRESSURE
NOTE: A new sensor ID can also be rogrammed directly into
the WCM by using a RKE-TPM Analyzer in conjunction
with a Scan Tool. Once the new sensor ID has been
rogrammed, the RKE-TPM Analyzer can be used to
u date the TPMS by activating the sensor.
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MONITORING (TPM), OPERATION.
If the TPM system detects that the tire pressure in any road tire is going low,
beyond the Low Pressure lamp) ON threshold see placard table below), the
TPM system will continuously illuminate an indicator lamp. If a system fault is
detected, the indicator lamp will flash on/off for 75 seconds, then remain on
solid.
If the WCM detects a warning or fault condition at ignition key "on" it will wait
ten seconds +/- 10 % before sending the first request to illuminate the indicator
lamp. This will assure that the display module has concluded its bulb check
period. The display module will request a chime once per ignition cycle for each
"warning" or "fault" condition detected. A "warning" or "fault" condition will
remain enabled until the problem causing the condition is corrected and
removed/reset.
The WCM shall continuously monitor for the receipt of tire pressure RF message
transmissions from the wheel sensors during both the ignition key "on" and key
"off" cycles. The wheel sensor ID's and the location of each sensor e.g. Tire 1,
Tire 2 etc.) are stored in the WCM non-volatile memory during the initial
Manufacturing Plant Process, or during a service procedure, as required.
The TPM System will continue to warn the driver of low tire pressure as long as
the condition exists, and will not turn off the indicator lamp until the tire pressure
is at or above the Low Pressure lamp) OFF threshold see placard table below).
The system will automatically update and the TPM indicator lamp will
extinguish once the updated tire pressures have been received.
Tire pressure will vary with temperature by about 1 psi 6.9 kPa) for every 12°F
6.5°C). This means that when the outside temperature decreases, the tire
pressure will decrease. Tire pressure should always be set based on cold inflation
tire pressure placard pressure). This is defined as the tire pressure after a vehicle
has not been driven for more than 3 hours and in outside ambient temperature).
The tire pressure will also increase as the vehicle is driven; this is normal and
there should be no adjustment for this increased pressure. For a system fault, the
system will return to normal once the WCM receives a valid transmission from
that sensor location.
PREMIUM TIRE PRESSURE MONITORING
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The operation and lamp/chime strategy of the Base Tire Pressure Monitoring
System TPMS) also applies to the Premium TPMS, but the premium TPMS can
display text messages and a tire pressure graphic display on the information
cluster. If a low pressure condition is detected, in addition to a chime and
indicator lamp turning ON, a graphic display of the pressure value s) with the
low tire s) flashing will appear in the Electronic Vehicle Information Center
EVIC). Once pressure in the suspect tire s) raises above the Low Pressure
lamp) OFF Threshold see placard table below), the lamp will go out once the
WCM receives a valid transmission from the sensor. If a system fault is detected,
in addition to a chime and a indicator lamp flashing, a "Check TPM System" text
message will be displayed in the instrument cluster, and the tire pressure graphic
display will have "- -"
in place of the pressure value. After the flash sequence, the
TPM indicator lamp will remain illuminated. The system will return to normal
once the WCM receives a valid transmission from that sensor location.
The Premium TPMS determines the location of the tire pressure sensors by using
transponders located in three of the four wheel wells on the vehicle. A fourth
transponder is not necessary in the remaining wheel well due to the process of
elimination theory. Once the system knows the location of the first three sensors,
it assumes the location of the fourth tire pressure sensor, and updates the graphic
display when necessary. For more information, refer to TRANSPONDER,
TIRE PRESSURE MONITORING (TPM), OPERATION.
TPM THRESHOLD PRESSURES
TPM THRESHOLD PRESSURES TABLE
NOTE: To determine the ressure thresholds for a vehicle, refer
to the Tire Inflation Pressure (Placard) Label found on the
Driver's B-Pillar, then a ly the lacard ressure to the
following table.
Placard Pressure
(Cold) (PSI)
Low Pressure ON
Threshold (PSI)
Low Pressure OFF
Threshold (PSI)
28 22 26
29 23 27
30 24 28
31 25 29
32 25 29
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DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - TIRE PRESSURE MONITORING
When diagnosing a tire pressure issue, first check the Tire Pressure Monitoring
TPM) indicator lamp in the instrument cluster during ignition key ON. From the
OFF position, turn the key to ON and check the TPM indicator lamp to observe
one of the following:
If after 10 seconds the indicator lamp is illuminating continuously not
flashing), proceed to LOW PRESSURE below.
33 26 30
34 27 31
35 28 32
36 29 33
37 29 34
38 30 35
39 31 36
40 32 37
41 33 38
42 34 39
43 35 40
44 36 41
45 36 41
46 37 43
47 38 44
48 38 45
49 39 45
50 40 47
51 41 48
55 44 52
60 48 57
65 52 62
70 56 67
75 60 72
80 64 77
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If after 10 seconds the indicator lamp flashes on/off for 75 seconds, then
remains on solid, there is a system fault detected. Refer to SYSTEM
FAULT.
LOW PRESSURE
Check air pressure as necessary in all tires using a known accurate air gauge and
adjust to the specification listed on the Tire Inflation Pressure Label Placard)
provided with the vehicle usually applied to the driver side B
-pillar). After
adjusting air pressure in a tire on the vehicle, allow approximately two minutes
for the message or indicator lamp to go out.
If air pressure in any tire is low, inspect all the tires for leaks. A water "dunk
tank" or other water test may be used to check for a leak around the sensor as
long as any water at the valve core is removed once the procedure is completed.
The water can be easily expelled from the core area by pushing in on the core for
several seconds, allowing escaping air to drive out any moisture. Reinflate the
tire as necessary. Always make sure the original special) valve stem cap is
securely installed to keep moisture out of the sensor.
If the indicator lamp is still ON continuously, refer to the appropriate diagnostic
information.
SYSTEM FAULT
If a system fault is detected, a chime will sound, and the TPM indicator telltale)
lamp will flash for 75 seconds, then remain on solid. For vehicles with the
Premium TPM Systems, a "CHECK TPM SYSTEM" message will appear in the
Electronic Vehicle Information Center EVIC), followed by a graphic display. A
NOTE: Tire ressure may increase from 2 to 6 si (14 to 41 kPa)
during normal driving conditions. Do NOT reduce this
normal ressure build u .
NOTE: Tire ressure will vary with tem erature by about 1 si
(6.9 kPa) for every 12°F (6.5°C). This means that when the
outside tem erature decreases, the tire ressure will also
decrease. Tire ressure should always be set based on
cold inflation tire ressure. For details. Refer to TIRES,
STANDARD PROCEDURE.
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system fault can occur by many scenarios, including the following:
Signal interference due to electronic devices or driving next to facilities
emitting the same Radio Frequencies as the TPM sensors.
Installing some form of aftermarket window tinting that affects radio wave
signals.
Accumulation of snow or ice around the wheels or wheel housings.
Using tire chains on the vehicle.
Using wheels not equipped with TPM sensors.
Refer to the appropriate diagnostic information.
SENSOR, TIRE PRESSURE MONITORING (TPM)
CAUTION
CAUTION
CAUTION: The Tire Pressure Monitoring (TPM) system has
been o timized for the original equi ment tires and
wheels. TPM system ressures have been
established for the tire size equi ed on the
vehicle. Undesirable system o eration or sensor
damage may result when using re lacement
equi ment that is not of the same size, ty e, or
style. Aftermarket wheels can cause sensor
damage. Do not use aftermarket tire sealants or
balance beads if your vehicle is equi ed with
TPM, as damage to the sensors may result.
CAUTION: Do not attem t to install a tire ressure sensor in
an aftermarket wheel. Use tire ressure sensors in
original style factory wheels only. If aftermarket
wheels are installed, and therefore do not contain
tire ressure sensors, the system will not function
ro erly and the driver will be continuously
notified of a system malfunction.
CAUTION: After ins ecting or adjusting the tire ressure
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DESCRIPTION
DESCRIPTION
Fig. 11: Sensor Mounting
-
Ex loded View
always reinstall the valve stem ca . This will
revent moisture and dirt from entering the valve
stem, which could damage the Tire Pressure
Sensor.
CAUTION: Tire ressure sensor valve stem ca s and cores
are s ecially designed for the sensors. Due to risk
of corrosion, do not use a standard valve stem ca
or core in a tire ressure sensor in lace of the
original equi ment style sensor ca and core.
CAUTION: Any time a sensor is to be installed in a wheel, it is
necessary to install a new sensor-to-wheel seal,
metal washer and valve stem nut, to ensure air
tight sealing.
CAUTION: When installing the valve core, be sure to tighten
the core to s ecifications. Overtightening by a little
as three or four inch ounds can damage the
sensor.
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