gas type DODGE RAM 2001 Service Repair Manual

(9) Connect harness wires to governor pressure
solenoid and governor pressure sensor.
(10) Install fluid filter and pan.
(11) Lower vehicle.
(12) Fill transmission with recommended fluid and
road test vehicle to verify repair.
INSTALLATION
(1) Check condition of O-ring seals on valve body
harness connector (Fig. 314). Replace seals on con-
nector body if cut or worn.
(2) Check condition of manual lever shaft seal in
transmission case. Replace seal if lip is cut or worn.
Install new seal with 15/16 deep well socket (Fig.
315).
(3) Check condition of seals on accumulator piston
(Fig. 316). Install new piston seals, if necessary.
(4) Place valve body manual lever in low (1 posi-
tion) so ball on park lock rod will be easier to install
in sprag.
(5) Lubricate shaft of manual lever with petroleum
jelly. This will ease inserting shaft through seal in
case.
(6) Lubricate seal rings on valve body harness con-
nector with petroleum jelly.
(7) Position valve body in case and work end of
park lock rod into and through pawl sprag. Turn pro-
peller shaft to align sprag and park lock teeth if nec-
essary. The rod will click as it enters pawl. Move rod
to check engagement.
CAUTION: It is possible for the park rod to displace
into a cavity just above the pawl sprag during
installation. Make sure the rod is actually engaged
in the pawl and has not displaced into this cavity.(8) Install accumulator springs and piston into
case. Then swing valve body over piston and outer
spring to hold it in place.
(9) Align accumulator piston and outer spring,
manual lever shaft and electrical connector in case.
(10) Then seat valve body in case and install one
or two bolts to hold valve body in place.
(11) Tighten valve body bolts alternately and
evenly to 11 N´m (100 in. lbs.) torque.
(12) Install new fluid filter on valve body. Tighten
filter screws to 4 N´m (35 in. lbs.) torque.
(13) Install throttle and gearshift levers on valve
body manual lever shaft.
(14) Check and adjust front and rear bands if nec-
essary.
(15) Connect solenoid case connector wires.
(16) Install oil pan and new gasket. Tighten pan
bolts to 17 N´m (13 ft. lbs.) torque.
(17) Lower vehicle and fill transmission with
MopartATF +4, type 9602, fluid.
(18) Check and adjust gearshift and throttle valve
cables, if necessary.
ADJUSTMENTS - VALVE BODY
CONTROL PRESSURE ADJUSTMENTS
There are two control pressure adjustments on the
valve body;
²Line Pressure
²Throttle Pressure
Line and throttle pressures are interdependent
because each affects shift quality and timing. As a
result, both adjustments must be performed properly
and in the correct sequence. Adjust line pressure first
and throttle pressure last.
Fig. 313 Solenoid Harness Routing
1 - OVERDRIVE/CONVERTER SOLENOID WIRE HARNESS
2 - 3-4 ACCUMULATOR COVER PLATE
Fig. 314 Valve Body Harness Connector O-Ring Seal
1 - CONNECTOR O-RINGS
2 - VALVE BODY HARNESS CONNECTOR
3 - HARNESS
21 - 818 AUTOMATIC TRANSMISSION - 47REBR/BE
VALVE BODY (Continued)

DIAGNOSIS AND TESTING ± WATER LEAKS
Water leaks can be caused by poor sealing,
improper body component alignment, body seam
porosity, missing plugs, or blocked drain holes. Cen-
trifugal and gravitational force can cause water to
drip from a location away from the actual leak point,
making leak detection difficult. All body sealing
points should be water tight in normal wet-driving
conditions. Water flowing downward from the front of
the vehicle should not enter the passenger or luggage
compartment. Moving sealing surfaces will not
always seal water tight under all conditions. At
times, side glass or door seals will allow water to
enter the passenger compartment during high pres-
sure washing or hard driving rain (severe) condi-
tions. Overcompensating on door or glass
adjustments to stop a water leak that occurs under
severe conditions can cause premature seal wear and
excessive closing or latching effort. After completing
a repair, water test vehicle to verify leak has stopped
before returning vehicle to use.
VISUAL INSPECTION BEFORE WATER LEAK TESTS
Verify that floor and body plugs are in place, body
drains are clear, and body components are properly
aligned and sealed. If component alignment or seal-
ing is necessary, refer to the appropriate section of
this group for proper procedures.
WATER LEAK TESTS
WARNING: DO NOT USE ELECTRIC SHOP LIGHTS
OR TOOLS IN WATER TEST AREA. PERSONAL
INJURY CAN RESULT.
When the conditions causing a water leak have
been determined, simulate the conditions as closely
as possible.
²If a leak occurs with the vehicle parked in a
steady light rain, flood the leak area with an open-
ended garden hose.
²If a leak occurs while driving at highway speeds
in a steady rain, test the leak area with a reasonable
velocity stream or fan spray of water. Direct the
spray in a direction comparable to actual conditions.
²If a leak occurs when the vehicle is parked on an
incline, hoist the end or side of the vehicle to simu-
late this condition. This method can be used when
the leak occurs when the vehicle accelerates, stops or
turns. If the leak occurs on acceleration, hoist the
front of the vehicle. If the leak occurs when braking,
hoist the back of the vehicle. If the leak occurs on left
turns, hoist the left side of the vehicle. If the leak
occurs on right turns, hoist the right side of the vehi-
cle. For hoisting recommendations refer to Group 0,
Lubrication and Maintenance, General Information
section.
WATER LEAK DETECTION
To detect a water leak point-of-entry, do a water
test and watch for water tracks or droplets forming
on the inside of the vehicle. If necessary, remove inte-
rior trim covers or panels to gain visual access to the
leak area. If the hose cannot be positioned without
being held, have someone help do the water test.
Some water leaks must be tested for a considerable
length of time to become apparent. When a leak
appears, find the highest point of the water track or
drop. The highest point usually will show the point of
entry. After leak point has been found, repair the
leak and water test to verify that the leak has
stopped.
Locating the entry point of water that is leaking
into a cavity between panels can be difficult. The
trapped water may splash or run from the cavity,
often at a distance from the entry point. Most water
leaks of this type become apparent after accelerating,
stopping, turning, or when on an incline.
MIRROR INSPECTION METHOD
When a leak point area is visually obstructed, use
a suitable mirror to gain visual access. A mirror can
also be used to deflect light to a limited-access area
to assist in locating a leak point.
BRIGHT LIGHT LEAK TEST METHOD
Some water leaks in the luggage compartment can
be detected without water testing. Position the vehi-
cle in a brightly lit area. From inside the darkened
luggage compartment inspect around seals and body
seams. If necessary, have a helper direct a drop light
over the suspected leak areas around the luggage
compartment. If light is visible through a normally
sealed location, water could enter through the open-
ing.
PRESSURIZED LEAK TEST METHOD
When a water leak into the passenger compart-
ment cannot be detected by water testing, pressurize
the passenger compartment and soap test exterior of
the vehicle. To pressurize the passenger compart-
ment, close all doors and windows, start engine, and
set heater control to high blower in HEAT position. If
engine can not be started, connect a charger to the
battery to ensure adequate voltage to the blower.
With interior pressurized, apply dish detergent solu-
tion to suspected leak area on the exterior of the
vehicle. Apply detergent solution with spray device or
soft bristle brush. If soap bubbles occur at a body
seam, joint, seal or gasket, the leak entry point could
be at that location.
23 - 2 BODYBR/BE
BODY (Continued)

OPERATION - A/C LINE COUPLERS
The spring-lock coupler is held together by a garter
spring inside a circular cage on the male half of the
fitting (Fig. 1). When the two coupler halves are con-
nected, the flared end of the female fitting slips
behind the garter spring inside the cage on the male
fitting. The garter spring and cage prevent the flared
end of the female fitting from pulling out of the cage.
Two O-rings on the male half of the fitting are
used to seal the connection. These O-rings are com-
patible with R-134a refrigerant and must be replaced
with O-rings made of the same material.
Secondary clips are installed over the two con-
nected coupler halves at the factory for added blowoff
protection. In addition, some models have a plastic
ring that is used at the factory as a visual indicator
to confirm that these couplers are connected. After
the coupler is connected, the plastic indicator ring is
no longer needed; however, it will remain on the
refrigerant line near the coupler cage.
OPERATION
High pressures are produced in the refrigerant sys-
tem when the air conditioning compressor is operat-
ing. Extreme care must be exercised to make sure
that each of the refrigerant system connections is
pressure-tight and leak free. It is a good practice to
inspect all flexible hose refrigerant lines at least once
a year to make sure they are in good condition and
properly routed.The refrigerant lines and hoses are coupled with
other components of the HVAC system with peanut-
block style fittings. A stat-O seal type flat steel gas-
ket with a captured compressible O-ring, is used to
mate plumbing lines with A/C components to ensure
the integrity of the refrigerant system.
The refrigerant lines and hoses cannot be repaired
and, if faulty or damaged, they must be replaced.
WARNING:
THE AIR CONDITIONING SYSTEM CONTAINS
REFRIGERANT UNDER HIGH PRESSURE. SEVERE
PERSONAL INJURY MAY RESULT FROM IMPROPER
SERVICE PROCEDURES. REPAIRS SHOULD ONLY
BE PERFORMED BY QUALIFIED SERVICE PERSON-
NEL.
AVOID BREATHING THE REFRIGERANT AND
REFRIGERANT OIL VAPOR OR MIST. EXPOSURE
MAY IRRITATE THE EYES, NOSE, AND/OR THROAT.
WEAR EYE PROTECTION WHEN SERVICING THE
AIR CONDITIONING REFRIGERANT SYSTEM. SERI-
OUS EYE INJURY CAN RESULT FROM DIRECT
CONTACT WITH THE REFRIGERANT. IF EYE CON-
TACT OCCURS, SEEK MEDICAL ATTENTION IMME-
DIATELY.
DO NOT EXPOSE THE REFRIGERANT TO OPEN
FLAME. POISONOUS GAS IS CREATED WHEN
REFRIGERANT IS BURNED. AN ELECTRONIC LEAK
DETECTOR IS RECOMMENDED.
IF ACCIDENTAL SYSTEM DISCHARGE OCCURS,
VENTILATE THE WORK AREA BEFORE RESUMING
SERVICE. LARGE AMOUNTS OF REFRIGERANT
RELEASED IN A CLOSED WORK AREA WILL DIS-
PLACE THE OXYGEN AND CAUSE SUFFOCATION.
THE EVAPORATION RATE OF R-134a REFRIGER-
ANT AT AVERAGE TEMPERATURE AND ALTITUDE
IS EXTREMELY HIGH. AS A RESULT, ANYTHING
THAT COMES IN CONTACT WITH THE REFRIGER-
ANT WILL FREEZE. ALWAYS PROTECT THE SKIN
OR DELICATE OBJECTS FROM DIRECT CONTACT
WITH THE REFRIGERANT.
THE R-134a SERVICE EQUIPMENT OR THE VEHI-
CLE REFRIGERANT SYSTEM SHOULD NOT BE
PRESSURE TESTED OR LEAK TESTED WITH COM-
PRESSED AIR. SOME MIXTURES OF AIR AND
R-134a HAVE BEEN SHOWN TO BE COMBUSTIBLE
AT ELEVATED PRESSURES. THESE MIXTURES ARE
POTENTIALLY DANGEROUS, AND MAY RESULT IN
FIRE OR EXPLOSION CAUSING INJURY OR PROP-
ERTY DAMAGE.
Fig. 1 SPRING-LOCK COUPLER - TYPICAL
1 - MALE HALF SPRING-LOCK COUPLER
2 - FEMALE HALF SPRING-LOCK COUPLER
3 - SECONDARY CLIP
4 - CONNECTION INDICATOR RING
5 - COUPLER CAGE
6 - GARTER SPRING
7 - COUPLER CAGE
8-9O9RINGS
BR/BEPLUMBING 24 - 41
PLUMBING (Continued)

CAUTION:
Liquid refrigerant is corrosive to metal surfaces.
Follow the operating instructions supplied with the
service equipment being used.
Never add R-12 to a refrigerant system designed to
use R-134a. Damage to the system will result.
R-12 refrigerant oil must not be mixed with R-134a
refrigerant oil. They are not compatible.
Do not use R-12 equipment or parts on the R-134a
system. Damage to the system will result.
Do not overcharge the refrigerant system. This will
cause excessive compressor head pressure and
can cause noise and system failure.
Recover the refrigerant before opening any fitting
or connection. Open the fittings with caution, even
after the system has been discharged. Never open
or loosen a connection before recovering the refrig-
erant.
Do not remove the secondary retention clip from
any spring-lock coupler connection while the refrig-
erant system is under pressure. Recover the refrig-
erant before removing the secondary retention clip.
Open the fittings with caution, even after the sys-
tem has been discharged. Never open or loosen a
connection before recovering the refrigerant.
The refrigerant system must always be evacuated
before charging.
Do not open the refrigerant system or uncap a
replacement component until you are ready to ser-
vice the system. This will prevent contamination in
the system.
Before disconnecting a component, clean the out-
side of the fittings thoroughly to prevent contami-
nation from entering the refrigerant system.
Immediately after disconnecting a component from
the refrigerant system, seal the open fittings with a
cap or plug.
Before connecting an open refrigerant fitting,
always install a new seal or gasket. Coat the fitting
and seal with clean refrigerant oil before connect-
ing.
Do not remove the sealing caps from a replacement
component until it is to be installed.
When installing a refrigerant line, avoid sharp
bends that may restrict refrigerant flow. Position the
refrigerant lines away from exhaust system compo-
nents or any sharp edges, which may damage the
line.
Tighten refrigerant fittings only to the specified
torque. The aluminum fittings used in the refriger-
ant system will not tolerate overtightening.
When disconnecting a refrigerant fitting, use a
wrench on both halves of the fitting. This will pre-
vent twisting of the refrigerant lines or tubes.
Refrigerant oil will absorb moisture from the atmo-
sphere if left uncapped. Do not open a container ofrefrigerant oil until you are ready to use it. Replace
the cap on the oil container immediately after using.
Store refrigerant oil only in a clean, airtight, and
moisture-free container.
Keep service tools and the work area clean. Con-
tamination of the refrigerant system through care-
less work habits must be avoided.
CAUTION - REFRIGERANT HOSES/LINES/
TUBES PRECAUTIONS
Kinks or sharp bends in the refrigerant plumbing
will reduce the capacity of the entire system. High
pressures are produced in the system when it is oper-
ating. Extreme care must be exercised to make sure
that all refrigerant system connections are pressure
tight.
A good rule for the flexible hose refrigerant lines is
to keep the radius of all bends at least ten times the
diameter of the hose. Sharp bends will reduce the
flow of refrigerant. The flexible hose lines should be
routed so they are at least 80 millimeters (3 inches)
from the exhaust manifold. It is a good practice to
inspect all flexible refrigerant system hose lines at
least once a year to make sure they are in good con-
dition and properly routed.
There are two types of refrigerant fittings:
²All fittings with O-rings need to be coated with
refrigerant oil before installation. Use only O-rings
that are the correct size and approved for use with
R-134a refrigerant. Failure to do so may result in a
leak.
²Unified plumbing connections with gaskets can-
not be serviced with O-rings. The gaskets are not
reusable and new gaskets do not require lubrication
before installing.
Using the proper tools when making a refrigerant
plumbing connection is very important. Improper
tools or improper use of the tools can damage the
refrigerant fittings. Always use two wrenches when
loosening or tightening tube fittings. Use one wrench
to hold one side of the connection stationary, while
loosening or tightening the other side of the connec-
tion with a second wrench.
The refrigerant must be recovered completely from
the system before opening any fitting or connection.
Open the fittings with caution, even after the refrig-
erant has been recovered. If any pressure is noticed
as a fitting is loosened, tighten the fitting and
recover the refrigerant from the system again.
Do not discharge refrigerant into the atmosphere.
Use an R-134a refrigerant recovery/recycling device
that meets SAE Standard J2210.
24 - 42 PLUMBINGBR/BE
PLUMBING (Continued)

(1) On gasoline engine models:
(a) Insert the two lower condenser locators into
the isolators in the holes of the lower crossmember.
(b) Tilt the condenser up towards the engine
compartment far enough to align the upper mount-
ing bracket holes with the holes in the upper radi-
ator crossmember.
(c) Install the two screws that secure the con-
denser upper mounting brackets to the outside of
the upper radiator crossmember. Tighten the
mounting screws to 10.5 N´m (95 in. lbs.).
(2) On diesel engine models:
(a) Install the driver side condenser mounting
brackets over the two studs on the charge air
cooler.
(b) Install the two screws that secure the brack-
ets on the passenger side end of the condenser to
the charge air cooler. Tighten the mounting screws
to 10.5 N´m (95 in. lbs.).
(c) Install the two nuts that secure the driver
side end of the condenser to the studs on the
charge air cooler. Tighten the mounting nuts to
10.5 N´m (95 in. lbs.).
(3) Remove the plugs or tape from the refrigerant
line fittings on the liquid line and the condenser out-
let. Connect the liquid line to the condenser outlet.
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - STANDARD PROCEDURE - A/C LINE
COUPLERS)
(4) Install a new gasket and the discharge line
block fitting over the stud on the condenser inlet.
Tighten the mounting nut to 20 N´m (180 in. lbs.).
(5) Check that all of the condenser and radiator
air seals are in their proper locations.(6) Connect the battery negative cable.
(7) Evacuate the refrigerant system. (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM EVACUATE)
(8) Charge the refrigerant system. (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM CHARGE)
NOTE: If the condenser is replaced, add 30 millili-
ters (1 fluid ounce) of refrigerant oil to the refriger-
ant system. Use only refrigerant oil of the type
recommended for the compressor in the vehicle.
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING/REFRIGERANT OIL - DESCRIPTION)
SUCTION AND DISCHARGE
LINE
REMOVAL
WARNING: REVIEW THE WARNINGS AND CAU-
TIONS IN THE FRONT OF THIS SECTION BEFORE
PERFORMING THE FOLLOWING OPERATION.
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - WARNING) (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - CAUTION)
(1) Disconnect and isolate the battery negative
cable.
(2) Recover the refrigerant from the refrigerant
system. (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING - STANDARD PROCEDURE -
REFRIGERANT RECOVERY)
(3) Unplug the wire harness connector from the a/c
high pressure switch.
(4) Disconnect the suction line refrigerant line cou-
pler at the accumulator. (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - STANDARD
PROCEDURE - A/C LINE COUPLER) Install plugs
in, or tape over all of the opened refrigerant line fit-
tings.
(5) Remove the nut that secures the block fitting
to the stud on the condenser inlet and disconnect the
discharge line from the condenser. Install plugs in, or
tape over all of the opened refrigerant line fittings.
(6) On models with a gasoline engine, remove the
nut that secures the refrigerant line support bracket
to the stud on the compressor mounting bracket.
(7) Remove the bolt that secures the refrigerant
line manifold to the compressor (Fig. 8) or (Fig. 9).
Install plugs in, or tape over all of the opened refrig-
erant line fittings.
Fig. 7 CONDENSER REMOVE/INSTALL - DIESEL
ENGINE
1 - CHARGE AIR COOLER
2 - NUT
3 - CONDENSER
4 - SCREW
24 - 50 PLUMBINGBR/BE
A/C CONDENSER (Continued)

more information on the engine cooling system, the
engine coolant and the heater hoses.
REMOVAL
(1) Remove the HVAC housing from the vehicle.
(Refer to 24 - HEATING & AIR CONDITIONING/
DISTRIBUTION/HVAC HOUSING - REMOVAL)
(2) Remove the screws and retainers that secure
the heater core to the HVAC housing.
(3) Lift the heater core straight up and out of the
heater-A/C housing (Fig. 14).
INSTALLATION
(1) Lower the heater core into the HVAC housing.
(2) Position the retainers over the heater core
tubes. Install and tighten the screws that secure the
heater core and retainers to the HVAC housing.
Tighten the screws to 2.2 N´m (20 in. lbs.).
(3) Reinstall the HVAC housing in the vehicle.
(Refer to 24 - HEATING & AIR CONDITIONING/
DISTRIBUTION/HVAC HOUSING - INSTALLA-
TION)
REFRIGERANT
DESCRIPTION
The refrigerant used in this air conditioning sys-
tem is a HydroFluoroCarbon (HFC), type R-134a.
Unlike R-12, which is a ChloroFluoroCarbon (CFC),R-134a refrigerant does not contain ozone-depleting
chlorine. R-134a refrigerant is a non-toxic, non-flam-
mable, clear, and colorless liquefied gas.
Even though R-134a does not contain chlorine, it
must be reclaimed and recycled just like CFC-type
refrigerants. This is because R-134a is a greenhouse
gas and can contribute to global warming.
OPERATION
R-134a refrigerant is not compatible with R-12
refrigerant in an air conditioning system. Even a
small amount of R-12 added to an R-134a refrigerant
system will cause compressor failure, refrigerant oil
sludge or poor air conditioning system performance.
In addition, the PolyAlkylene Glycol (PAG) synthetic
refrigerant oils used in an R-134a refrigerant system
are not compatible with the mineral-based refriger-
ant oils used in an R-12 refrigerant system.
R-134a refrigerant system service ports, service
tool couplers and refrigerant dispensing bottles have
all been designed with unique fittings to ensure that
an R-134a system is not accidentally contaminated
with the wrong refrigerant (R-12). There are also
labels posted in the engine compartment of the vehi-
cle and on the compressor identifying to service tech-
nicians that the air conditioning system is equipped
with R-134a.
REFRIGERANT OIL
DESCRIPTION
The refrigerant oil used in R-134a refrigerant sys-
tems is a synthetic-based, PolyAlkylene Glycol (PAG),
wax-free lubricant. Mineral-based R-12 refrigerant
oils are not compatible with PAG oils, and should
never be introduced to an R-134a refrigerant system.
There are different PAG oils available, and each
contains a different additive package. The SD7H15
compressor used in this vehicle is designed to use an
SP-20 PAG refrigerant oil. Use only refrigerant oil of
this same type to service the refrigerant system.
OPERATION
After performing any refrigerant recovery or recy-
cling operation, always replenish the refrigerant sys-
tem with the same amount of the recommended
refrigerant oil as was removed. Too little refrigerant
oil can cause compressor damage, and too much can
reduce air conditioning system performance.
PAG refrigerant oil is much more hygroscopic than
mineral oil, and will absorb any moisture it comes
into contact with, even moisture in the air. The PAG
oil container should always be kept tightly capped
until it is ready to be used. After use, recap the oil
Fig. 14 HEATER CORE REMOVE/INSTALL
1 - HEATER CORE LINES
2 - HEATER CORE
24 - 56 PLUMBINGBR/BE
HEATER CORE (Continued)

DESCRIPTION - TRIP DEFINITION
The term ªTripº has different meanings depending
on what the circumstances are. If the MIL (Malfunc-
tion Indicator Lamp) is OFF, a Trip is defined as
when the Oxygen Sensor Monitor and the Catalyst
Monitor have been completed in the same drive cycle.
When any Emission DTC is set, the MIL on the
dash is turned ON. When the MIL is ON, it takes 3
good trips to turn the MIL OFF. In this case, it
depends on what type of DTC is set to know what a
ªTripº is.
For the Fuel Monitor or Mis-Fire Monitor (contin-
uous monitor), the vehicle must be operated in the
ªSimilar Condition Windowº for a specified amount of
time to be considered a Good Trip.
If a Non-Contiuous OBDII Monitor fails twice in a
row and turns ON the MIL, re-running that monitor
which previously failed, on the next start-up and
passing the monitor, is considered to be a Good Trip.
These will include the following:
²Oxygen Sensor
²Catalyst Monitor
²Purge Flow Monitor
²Leak Detection Pump Monitor (if equipped)
²EGR Monitor (if equipped)
²Oxygen Sensor Heater Monitor
If any other Emission DTC is set (not an OBDII
Monitor), a Good Trip is considered to be when the
Oxygen Sensor Monitor and Catalyst Monitor have
been completed; or 2 Minutes of engine run time if
the Oxygen Sensor Monitor or Catalyst Monitor have
been stopped from running.
It can take up to 2 Failures in a row to turn on the
MIL. After the MIL is ON, it takes 3 Good Trips to
turn the MIL OFF. After the MIL is OFF, the PCM
will self-erase the DTC after 40 Warm-up cycles. A
Warm-up cycle is counted when the ECT (Engine
Coolant Temperature Sensor) has crossed 160ÉF and
has risen by at least 40ÉF since the engine has been
started.
DESCRIPTION - COMPONENT MONITORS -
GAS ENGINES
There are several components that will affect vehi-
cle emissions if they malfunction. If one of these com-
ponents malfunctions the Malfunction Indicator
Lamp (MIL) will illuminate.
Some of the component monitors are checking for
proper operation of the part. Electrically operated
components now have input (rationality) and output
(functionality) checks. Previously, a component like
the Throttle Position sensor (TPS) was checked by
the PCM for an open or shorted circuit. If one of
these conditions occurred, a DTC was set. Now there
is a check to ensure that the component is working.
This is done by watching for a TPS indication of agreater or lesser throttle opening than MAP and
engine rpm indicate. In the case of the TPS, if engine
vacuum is high and engine rpm is 1600 or greater,
and the TPS indicates a large throttle opening, a
DTC will be set. The same applies to low vacuum if
the TPS indicates a small throttle opening.
All open/short circuit checks, or any component
that has an associated limp-in, will set a fault after 1
trip with the malfunction present. Components with-
out an associated limp-in will take two trips to illu-
minate the MIL.
DESCRIPTION - COMPONENT MONITORS -
DIESEL ENGINES
There are several electrical components that will
affect vehicle emissions if they malfunction. If one of
these components is malfunctioning, a Diagnostic
Trouble Code (DTC) will be set by either the Power-
train Control Module (PCM) or the Engine Control
Module (ECM). The Malfunction Indicator Lamp
(MIL) will then be illuminated when the engine is
running.
These electrically operated components have input
(rationality) and output (functionality) checks. A
check is done by one or more components to check
the operation of another component.
Example:The Intake Manifold Air Temperature
(IAT) sensor is used to monitor intake manifold air
temperature over a period of time after a cold start.
If the temperature has not risen to a certain specifi-
cation during a specified time, a Diagnostic Trouble
Code (DTC) will be set for a problem in the manifold
air heater system.
All open/short circuit checks, or any component
that has an associated limp-in will set a DTC and
trigger the MIL after 1 trip with the malfunction
present. Components without an associated limp-in
will take two trips to illuminate the MIL.
OPERATION - GAS ENGINES
The Powertrain Control Module (PCM) monitors
many different circuits in the fuel injection, ignition,
emission and engine systems. If the PCM senses a
problem with a monitored circuit often enough to
indicate an actual problem, it stores a Diagnostic
Trouble Code (DTC) in the PCM's memory. If the
problem is repaired or ceases to exist, the PCM can-
cels the code after 40 warm-up cycles. Diagnostic
trouble codes that affect vehicle emissions illuminate
the Malfunction Indicator Lamp (MIL). The MIL is
displayed as an engine icon (graphic) on the instru-
ment panel. Refer to Malfunction Indicator Lamp in
this section.
Certain criteria must be met before the PCM
stores a DTC in memory. The criteria may be a spe-
25 - 18 EMISSIONS CONTROLBR/BE
EMISSIONS CONTROL (Continued)

FAN - 3.9L/5.2L/5.9L/8.0L -
INSTALLATION, RADIATOR..............7-43
FAN - 3.9L/5.2L/5.9L/8.0L - REMOVAL,
RADIATOR...........................7-42
FAN - 5.9L DIESEL - CLEANING,
RADIATOR...........................7-44
FAN - 5.9L DIESEL - INSPECTION,
RADIATOR...........................7-44
FAN - 5.9L DIESEL - INSTALLATION,
RADIATOR...........................7-45
FAN - 5.9L DIESEL - REMOVAL,
RADIATOR...........................7-44
FAN DRIVE - DIAGNOSIS AND TESTING,
VISCOUS........................7-56,7-58
FAN DRIVE VISCOUS CLUTCH -
3.9L/5.2L/5.9L/8.0L - DESCRIPTION.......7-56
FAN DRIVE VISCOUS CLUTCH -
3.9L/5.2L/5.9L/8.0L - OPERATION.........7-56
FAN DRIVE VISCOUS CLUTCH - 5.9L
DIESEL - DESCRIPTION................7-57
FAN DRIVE VISCOUS CLUTCH - 5.9L
DIESEL - OPERATION..................7-57
FASCIA - ADJUSTMENT, FRONT..........13-2
FASCIA - INSTALLATION, FRONT.........13-2
FASCIA - INSTALLATION, FRONT LOWER . . . 13-3
FASCIA - REMOVAL, FRONT.............13-2
FASCIA - REMOVAL, FRONT LOWER......13-3
FASCIA-SPORT - INSTALLATION, FRONT . . . 13-3
FASCIA-SPORT - REMOVAL, FRONT.......13-3
FASTENER IDENTIFICATION -
DESCRIPTION......................Intro.-3
FASTENER USAGE - DESCRIPTION......Intro.-6
FASTENERS - DESCRIPTION, PUSH-IN.....23-1
FEATURES - DESCRIPTION,
PROGRAMMABLE ELECTRONIC.........30-20
FEATURES - OPERATION,
PROGRAMMABLE ELECTRONIC.........30-20
FENDER - INSTALLATION, LEFT FRONT . . . 23-93
FENDER - INSTALLATION, REAR.........23-95
FENDER - INSTALLATION, RIGHT FRONT . . 23-94
FENDER - REMOVAL, LEFT FRONT.......23-92
FENDER - REMOVAL, REAR............23-95
FENDER - REMOVAL, RIGHT FRONT......23-94
FILL - STANDARD PROCEDURE,
TRANSMISSION . . . 21-201,21-372,21-547,21-718
FILL DOOR - INSTALLATION, FUEL.......23-95
FILL DOOR - REMOVAL, FUEL..........23-95
FILLER CAP - DESCRIPTION, FUEL.......25-33
FILLER CAP - OPERATION, FUEL........25-33
FILLER CAP - REMOVAL/INSTALLATION,
FUEL..............................25-33
FILTER - DESCRIPTION, PCV...........25-35
FILTER - INSTALLATION, AIR PUMP......25-29
FILTER - INSTALLATION, INLET..........14-22
FILTER - INSTALLATION, OIL . 9-105,9-161,9-218,
9-296,9-48
FILTER - REMOVAL, AIR PUMP.........25-29
FILTER - REMOVAL, INLET.............14-22
FILTER - REMOVAL, OIL.....9-105,9-161,9-218,
9-296,9-48
FILTER - STANDARD PROCEDURES,
WATER DRAINING AT FUEL............14-56
FILTER / WATER SEPARATOR -
DESCRIPTION, FUEL..................14-59
FILTER / WATER SEPARATOR -
INSTALLATION, FUEL.................14-61
FILTER / WATER SEPARATOR -
OPERATION, FUEL....................14-59
FILTER / WATER SEPARATOR -
REMOVAL, FUEL.....................14-60
FILTER REPLACEMENT - STANDARD
PROCEDURE, FLUID.....21-201,21-372,21-547,
21-717
FILTER/PRESSURE REGULATOR -
DESCRIPTION, FUEL...................14-5
FILTER/PRESSURE REGULATOR -
INSTALLATION, FUEL..................14-6
FILTER/PRESSURE REGULATOR -
OPERATION, FUEL.....................14-5
FILTER/PRESSURE REGULATOR -
REMOVAL, FUEL
......................14-5
FINAL STEPS - NEW VEHICLE
PREPARATION FORM
.................30-22
FINISH - DESCRIPTION, BASE
COAT/CLEAR COAT
..................23-129
FINISH - INSPECTION, FIT
........30-10,30-12
FINISH - OPERATION, BASE COAT/CLEAR
COAT
.............................23-129FIRING ORDER, 3.9L V-6 ENGINE -
ENGINE..............................8I-2
FIRING ORDER, 5.2L/5.9L V-8 ENGINES -
ENGINE..............................8I-2
FIRING ORDER, DIESEL - FUEL
INJECTOR..........................14-58
FIT AND FINISH - INSPECTION.....30-10,30-12
FITTING - DESCRIPTION, QUICK
CONNECT...........................14-22
FITTING - STANDARD PROCEDURE,
CONNECTING ROD BEARING . . 9-144,9-202,9-88
FITTING - STANDARD PROCEDURE,
CRANKSHAFT MAIN BEARING......9-146,9-90
FITTING - STANDARD PROCEDURE,
MAIN BEARING..................9-203,9-33
FITTING - STANDARD PROCEDURE,
PISTON...............9-153,9-208,9-40,9-97
FITTING - STANDARD PROCEDURE,
PISTON RING...............9-154,9-41,9-98
FITTING, CONNECTING ROD BEARINGS -
STANDARD PROCEDURE-CONNECTING
ROD BEARING........................9-31
FITTING PISTON RINGS - STANDARD
PROCEDURE........................9-211
FITTING, PISTON RINGS - STANDARD
PROCEDURE-PISTON RING.............9-288
FITTINGS - STANDARD PROCEDURES,
QUICK-CONNECT.....................14-22
FIXED ORIFICE TUBE - DIAGNOSIS AND
TESTING...........................24-54
FLAG - INSTALLATION, SIDE VIEW
MIRROR...........................23-74
FLAG - REMOVAL, SIDE VIEW MIRROR . . . 23-74
FLARING - STANDARD PROCEDURE,
DOUBLE INVERTED.....................5-8
FLARING - STANDARD PROCEDURE, ISO....5-8
FLASHER - DESCRIPTION, COMBINATION . . 8L-7
FLASHER - INSTALLATION,
COMBINATION........................8L-8
FLASHER - OPERATION, COMBINATION....8L-7
FLASHER - REMOVAL, COMBINATION.....8L-8
FLOOR MATS - INSTALLATION, CARPETS . 23-123
FLOOR MATS - REMOVAL, CARPETS....23-123
FLOOR SHIFT BOOT - INSTALLATION,
4WD .............................23-122
FLOOR SHIFT BOOT - REMOVAL, 4WD . . . 23-122
FLOOR STOWAGE TRAY -
INSTALLATION, REAR................23-121
FLOOR STOWAGE TRAY - REMOVAL,
REAR.............................23-121
FLOW - 3.9L/5.2L/5.9L ENGINE -
DESCRIPTION, COOLING SYSTEM.........7-1
FLOW - 5.9L DIESEL - DESCRIPTION,
COOLING SYSTEM.....................7-1
FLOW - DIAGNOSIS AND TESTING,
RADIATOR COOLANT..........7-59,7-61,7-63
FLOW AND PRESSURE - DIAGNOSIS
AND TESTING, POWER STEERING........19-4
FLUID - DESCRIPTION, AUTOMATIC
TRANSMISSION.......................0-5
FLUID - DESCRIPTION, TRANSFER CASE....0-5
FLUID - DIAGNOSIS AND TESTING,
CAUSES OF BURNT.....21-199,21-370,21-545,
21-715
FLUID - OPERATION, AUTOMATIC
TRANSMISSION.......................0-5
FLUID AND FILTER REPLACEMENT -
STANDARD PROCEDURE . 21-201,21-372,21-547,
21-717
FLUID CAPACITIES, SPECIFICATIONS.......0-6
FLUID CONTAMINATION - DIAGNOSIS
AND TESTING....21-199,21-370,21-545,21-715
FLUID CONTAMINATION - DIAGNOSIS
AND TESTING, BRAKE..................5-14
FLUID DRAIN AND REFILL - STANDARD
PROCEDURE...........21-851,21-885,21-922
FLUID INDICATOR - DESCRIPTION,
WASHER
...........................8J-35
FLUID INDICATOR - DIAGNOSIS AND
TESTING, WASHER
...................8J-36
FLUID INDICATOR - OPERATION,
WASHER
...........................8J-35
FLUID LEAK - DIAGNOSIS AND TESTING,
CONVERTER HOUSING
. . . 21-148,21-319,21-491,
21-662
FLUID LEVEL - DIAGNOSIS AND
TESTING, EFFECTS OF INCORRECT
.....21-199,
21-370,21-545,21-715FLUID LEVEL - STANDARD PROCEDURE,
BRAKE..............................5-14
FLUID LEVEL CHECK - STANDARD
PROCEDURE.....21-199,21-370,21-545,21-715
FLUID LEVEL SWITCH - DESCRIPTION,
WASHER............................8R-7
FLUID LEVEL SWITCH - INSTALLATION,
WASHER............................8R-8
FLUID LEVEL SWITCH - OPERATION,
WASHER............................8R-7
FLUID LEVEL SWITCH - REMOVAL,
WASHER............................8R-8
FLUID LEVELS - INSPECTION............30-4
FLUID RESERVOIR - INSTALLATION.......5-15
FLUID RESERVOIR - REMOVAL..........5-15
FLUID, SPECIFICATIONS - BRAKE.........5-15
FLUID TYPES - DESCRIPTION.............0-5
FLUSH MEASUREMENTS,
SPECIFICATIONS - BODY GAP..........23-56
FLUSHING - STANDARD PROCEDURE,
COOLING SYSTEM CLEANING/
REVERSE............................7-16
FLUSHING COOLER AND TUBES -
WITHOUT RADIATOR IN-TANK
TRANSMISSION OIL COOLER -
STANDARD PROCEDURE.......7-80,7-83,7-86
FLUSHING COOLERS AND TUBES - WITH
RADIATOR IN-TANK TRANSMISSION
OIL COOLER - STANDARD
PROCEDURE.................7-79,7-83,7-85
FLUSHING POWER STEERING SYSTEM -
STANDARD PROCEDURE...............19-32
FLYWHEEL - ASSEMBLY................6-17
FLYWHEEL - DESCRIPTION..............6-16
FLYWHEEL - DIAGNOSIS AND TESTING....6-17
FLYWHEEL - DISASSEMBLY.............6-17
FLYWHEEL - OPERATION...............6-16
FOG LAMP - DIAGNOSIS AND TESTING....8L-9
FOG LAMP - INSTALLATION............8L-11
FOG LAMP - REMOVAL................8L-11
FOG LAMP UNIT - ADJUSTMENTS.......8L-12
FOG LAMP UNIT - INSTALLATION........8L-12
FOG LAMP UNIT - REMOVAL...........8L-11
FORE/AFT - ADJUSTMENT, FRONT DOOR . . 23-68
FORM, FINAL STEPS - NEW VEHICLE
PREPARATION.......................30-22
FORM-IN-PLACE GASKETS & SEALERS -
STANDARD PROCEDURE.....9-11,9-125,9-180,
9-237,9-68
FOUR-WHEEL DRIVE INDICATOR -
DIAGNOSIS AND TESTING..............8J-29
FRAME - DESCRIPTION.................13-6
FRAME - FRAME SERVICE..............13-6
FRAME - INSTALLATION, GRILLE........23-92
FRAME - REMOVAL, GRILLE............23-91
FRAME DIMENSION, SPECIFICATIONS.....13-7
FRAME SERVICE, FRAME...............13-6
FRONT - 2WD - DESCRIPTION.........2-7,2-8
FRONT - 4WD - DESCRIPTION...........2-14
FRONT - DESCRIPTION, CRANKSHAFT
OIL SEAL...................9-147,9-34,9-91
FRONT - INSTALLATION............5-14,5-27
FRONT - INSTALLATION...............22-12
FRONT - INSTALLATION, 1500/2500.......5-22
FRONT - INSTALLATION, 3500...........5-22
FRONT - INSTALLATION, CRANKSHAFT
OIL SEAL..............9-148,9-277,9-34,9-91
FRONT - INSTALLATION, PROPELLER
SHAFT...............................3-8
FRONT - OPERATION, CRANKSHAFT OIL
SEAL......................9-147,9-34,9-91
FRONT - REMOVAL................5-10,5-24
FRONT - REMOVAL, 1500/2500..........5-21
FRONT - REMOVAL, 3500...............5-22
FRONT - REMOVAL, CRANKSHAFT OIL
SEAL.................9-147,9-276,9-34,9-91
FRONT - REMOVAL, PROPELLER SHAFT....3-8
FRONT AIR DAM - INSTALLATION........13-2
FRONT AIR DAM - REMOVAL............13-1
FRONT AXLE - 216FBI - ADJUSTMENTS....3-17
FRONT AXLE - 216FBI - DESCRIPTION.....3-12
FRONT AXLE - 216FBI - INSTALLATION....3-17
FRONT AXLE - 216FBI - OPERATION......3-12
FRONT AXLE - 216FBI - REMOVAL
........3-16
FRONT AXLE - 248FBI - ADJUSTMENTS
....3-50
FRONT AXLE - 248FBI - DESCRIPTION
.....3-45
FRONT AXLE - 248FBI - INSTALLATION
....3-50
FRONT AXLE - 248FBI - OPERATION
......3-45
14 INDEXBR/BE
Description Group-Page Description Group-Page Description Group-Page