engine JEEP COMPASS 2007 1.G Service Manual

Manual Transaxle
Before starting the engine fully apply the parking brake,
press the clutch pedal to the floor and place the gear
selector in NEUTRAL.
NOTE:The engine will not start unless the clutch pedal
is pressed to the floor.
NOTE:If key won’t turn and steering wheel is locked,
rotate the wheel in either direction to relieve pressure on
the locking mechanism and then turn the key.
Normal Starting
Normal Starting of either a cold or a warm engine does
not require pumping or depressing the accelerator pedal.
Simply turn the ignition switch to the “START’” position
and release when the engine starts. If the engine fails to
start within 15 seconds, turn the ignition switch to the
“OFF” position, wait 10 to 15 seconds, then repeat the
normal starting procedure.
WARNING!
Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
axle cannot be started this way. Unburned fuel could
enter the catalytic converter and once the engine has
started, ignite and damage the converter and vehicle.
If the vehicle has a discharged battery, booster cables
may be used to obtain a start from another vehicle.
This type of start can be dangerous if done improp-
erly, so follow the procedure carefully. See section 6
of this manual for jump starting instructions.
Extremely Cold Weather (below
20°F or
29°C)
To insure reliable starting at these temperatures, use of an
externally powered electric engine block heater (available
from your dealer) is recommended.
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If Engine Fails to Start
If the engine fails to start after you have followed the
“NORMAL STARTING” procedure, it may be flooded.
Push the accelerator pedal all the way to the floor and
hold it there. Crank the engine for no more than 15
seconds. This should clear any excess fuel in case the
engine is flooded. Leave the ignition key in the ON
position, release the accelerator pedal and repeat the
“NORMAL STARTING” procedure.
WARNING!
Never pour fuel or other flammable liquid into the
throttle body air inlet opening in an attempt to start
the vehicle. This could result in flash fire causing
serious personal injury.
CAUTION!
To prevent damage to the starter, do not crank the
engine for more than 15 seconds at a time. Wait 10 to
15 seconds before trying again.
After Starting
The idle speed will automatically decrease as the engine
warms up.
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AUTOMATIC TRANSAXLE — IF EQUIPPEDCAUTION!
Damage to the transaxle may occur if the following
precautions are not observed:
•Shift into PARK only after the vehicle has come to a
complete stop.
•Shift into or out of REVERSE only after the vehicle has
come to a complete stop and the engine is at idle
speed.
•Do not shift from REVERSE, PARK, or NEUTRAL into
any forward gear when the engine is above idle speed.
•Before shifting into any gear, make sure your foot is
firmly on the brake pedal.
NOTE:You MUST press and hold the brake pedal down
while shifting out of Park.
Automatic Shift Lever
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WARNING!
It is dangerous to shift the selector lever out of “P” or
“N” if the engine speed is higher than idle speed. If
your foot is not firmly on the brake pedal, the
vehicle could accelerate quickly forward or in re-
verse. You could lose control of the vehicle and hit
someone or something. Only shift into gear when
the engine is idling normally and when your right
foot is firmly on the brake pedal.
Brake/Transmission Interlock System
This system prevents you from moving the gear shift out
of Park and into any gear unless the brake pedal is
pressed. This system is active only while the ignition
switch is in the ON or ACC positions. Always depress the
brake pedal first,before moving the gear selector out of
PARK.NOTE:If a malfunction occurs, the transaxle will not
shift out of park. Battery power is required to release the
brake/transmission interlock system. There is a remov-
able plug in the right side of the shifter housing that
allows you to insert your finger to override the system.
The key must be in the ignition and in the on position to
use the override lever. If this occurs obtain service as
soon as possible.
Automatic Transaxle Ignition Interlock System
This system prevents the key from being removed unless
the shift lever is in PARK. It also prevents shifting out of
PARK unless the key is in the ACC or ON positions, and
the brake pedal is depressed.
NOTE:If a malfunction occurs, the system will trap the
key in the ignition cylinder to warn you that this safety
feature is inoperable. The engine can be started and
stopped but the key cannot be removed until you obtain
service.
236 STARTING AND OPERATING

Gear Ranges For Continuously Variable
Automatic Transaxle (CVT)
DO NOT race the engine when shifting from PARK or
NEUTRAL positions into another gear range.
“P” Park
Supplements the parking brake by locking the transmis-
sion. The engine can be started in this range. Never use P
(Park) while the vehicle is in motion. Apply the parking
brake when leaving the vehicle in this range. Always
apply the parking brake first, and then place the selector
in P (Park) position.
WARNING!
Unintended movement of a vehicle could injure
those in and near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, you should always
shift the vehicle into P (Park), remove the key from
the ignition, and apply the parking brake. Once the
key is removed from the ignition, the transmission
shift lever is locked in the P (Park) position, securing
the vehicle against unwanted movement. Further-
more, you should never leave children unattended
inside a vehicle.
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The following indicators should be used to ensure that
you have engaged the transmission shift lever into the P
(Park) position:
•When shifting into P (Park), firmly move the lever all
the way forward until it stops.
•Look at the shift indicator window on the console to
ensure it is in the P (Park) position.
•You must depress the brake pedal to move the shift
lever out of the P (Park) position.
CAUTION!
Before moving the shift lever out of P (Park), you
must turn the ignition from LOCK to ON so the
steering wheel and shift lever are released. Other-
wise, damage to the steering column or shifter could
result. You must also depress the brake pedal.
“R” Reverse
Shift into this range only after the vehicle has come to a
complete stop.
“N” Neutral
Engine may be started in this range.
“D”
This should be used for most driving and provides the
best ratio for optimum driveability, fuel economy, and
performance.
“L” Low
This range should be used for maximum engine braking
when descending steep grades. In this range, the trans-
axle will ratio up only to prevent transaxle damage or
engine over speed while ratioing down will occur as
early as possible
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AUTOSTICK — IF EQUIPPED
Autostick is a driver-interactive transmission that offers
six manual ratio changes to provide you with more
control. Autostick allows you to maximize engine brak-
ing, eliminate undesirable upshifts and downshifts, and
improve overall vehicle performance. This system can
also provide you with more control during passing, city
driving, cold slippery conditions, mountain driving,
trailer towing, and many other situations. Automatic
ratio changes upward will only occur to protect the
Continuously Variable Automatic Transaxle (CVT) and or
the engine from overspeed and changes down will only
happen at minimum engine speed to prevent stalling.
Autostick Operation
Autostick Shifter
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Autostick operation is activated in theDposition by
moving the shift lever side to side. Moving the lever to
the (+) side will activate Autostick and shift up to the
next higher manual ratio, unless you are already operat-
ing in or near overdrive in which case, 6th ratio will be
selected. In like manner, moving the lever to (-) will
activate Autostick and shift to the next lower manual
ratio. After Autostick is activated, the manual ratio
selected is displayed in the transmission ratio display
and tipping the lever to the (+) or (-) direction will cause
an upshift or downshift by one ratio. Holding the lever to
(+) momentarily will deactivate Autostick. Autostick is
also deactivated when the lever is shifted out ofD.Also,
when in 6 position, touching the lever to the right will
restore DriveDposition.Autostick General Information
•
If a ratio other than 1st is selected and the vehicle is
brought to a stop, the transaxle control logic will
automatically select the 1st gear ratio.
•If a low range is selected and the engine accelerates to
the rev limit, the transaxle will automatically select the
next higher ratio.
•If a downshift would cause the engine to overspeed,
that shift will not occur until it is safe for the engine.
Mostly the CVT will stay in the manually selected
ratio, however.
•If the system detects powertrain overheating, the
transmission will revert to the automatic shift mode
and remain in that mode until the powertrain cools off.
•If the system detects a problem it will disable the
Autostick mode and the transmission will return to the
automatic mode until the problem is corrected.
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For most city driving you will find it easier to use only
the lower gears. For steady highway driving with light
accelerations, 5th gear is recommended.
Never drive with your foot resting on the clutch pedal, or
try to hold the vehicle on a hill with the clutch pedal
partially engaged. This will cause abnormal wear on the
clutch.
Never shift into REVERSE until the vehicle has come to a
complete stop.
NOTE:During cold weather, until the transaxle lubri-
cant is warm, you may experience slightly higher shift
efforts. This is normal and not harmful to the transaxle.
Recommended Shift Speeds
To use your manual transaxle for optimal fuel economy,
it should be upshifted as listed in table.
MANUAL TRANSAXLE RECOMMENDED SHIFT
SPEEDS
IN mph (km/h)
EN-
GINE
SIZEAC-
CEL-
ERA-
TION
RATE1to2 2to3 3to4 4to5
ALL
EN-
GINESAccel 13 (21) 22 (35) 35 (56) 47 (76)
Cruise 10 (16) 19 (31) 27 (43) 37 (60)
Downshifting
Proper downshifting will improve fuel economy and
prolong engine life.
242 STARTING AND OPERATING

CAUTION!
If you skip more than one gear while downshifting
or downshift at too high a vehicle speed, you could
damage the engine, transmission, or clutch.
To maintain a safe speed and prolong brake life, shift
down to 2nd or 1st when descending a steep grade.
When turning a corner, or driving up a steep grade,
downshift early so that the engine will not be overbur-
dened.
Four Wheel Drive System — If Equipped
This feature provides full time, on-demand, Four Wheel
Drive (4WD).
Four Wheel Drive Switch
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