Cylinder DODGE RAM 1500 1998 2.G Workshop Manual

DOOR - FRONT
TABLE OF CONTENTS
page page
DOOR
REMOVAL.............................18
INSTALLATION.........................18
ADJUSTMENTS
ADJUSTMENT........................19
DOOR GLASS
REMOVAL.............................20
INSTALLATION.........................20
EXTERIOR HANDLE
REMOVAL.............................20
INSTALLATION.........................21
GLASS RUN CHANNEL
REMOVAL.............................21
INSTALLATION.........................22
HINGE
REMOVAL.............................22
INSTALLATION.........................22
INSIDE HANDLE ACTUATOR
REMOVAL.............................22
INSTALLATION.........................22
LATCH
REMOVAL.............................23
INSTALLATION.........................23
ADJUSTMENTS
ADJUSTMENT........................23LATCH STRIKER
REMOVAL.............................23
INSTALLATION.........................23
ADJUSTMENTS
ADJUSTMENT........................24
LOCK CYLINDER
REMOVAL.............................24
INSTALLATION.........................24
TRIM PANEL
REMOVAL.............................24
INSTALLATION.........................24
WATERDAM
REMOVAL.............................25
INSTALLATION.........................25
WINDOW REGULATOR - POWER
REMOVAL.............................25
INSTALLATION.........................26
WINDOW REGULATOR - MANUAL
REMOVAL.............................26
INSTALLATION.........................27
SIDE VIEW MIRROR FLAG
REMOVAL.............................27
INSTALLATION.........................27
DOOR
REMOVAL
(1) Disconnect the door wire harness electrical con-
nector at the A-pillar. (Fig. 1)
(2) Using a grease pencil or equivalent, mark the
outline of the door hinges on the door to aid in instal-
lation.
(3) Support the door with a suitable lifting device.
NOTE: The epoxy bonded washers should not be
seperated from the hinge. If the washers are
removed the door may have to be re-adjusted.
(4) Remove the nuts and bolts attaching the door
hinges to the door.
INSTALLATION
(1) Support the door with a suitable lifting device
and install the door onto the hinges.
(2) Install the washers, if there were removed pre-
viously, nuts and tighten to 28 N´m (21 ft. lbs.).
(3) Connect the electrical connectors.
(4) Adjust the door as necessary. (Refer to 23 -
BODY/DOOR - FRONT/DOOR - ADJUSTMENTS)
23 - 18 DOOR - FRONTDR

(4) Adjust the door to the correct position. (Refer
to 23 - BODY/BODY STRUCTURE/GAP AND
FLUSH - SPECIFICATIONS)
(5) Tighten the door to hinges fasteners to 28 N´m
(21 ft. lbs.).
(6) Tighten the latch striker bolts. (Refer to 23 -
BODY/DOOR - FRONT/LATCH STRIKER - INSTAL-
LATION)
DOOR GLASS
REMOVAL
(1) Remove the waterdam. (Refer to 23 - BODY/
DOOR - FRONT/WATERDAM - REMOVAL)
(2) Reinstall the window handle, if equipped.
(3) Remove the window switch from the door trim
panel and reconnect it to the door wire harness, if
equipped.
(4) Raise the window to the position shown and
remove the two nuts attaching the glass to the win-
dow regulator. (Fig. 2)
(5) Remove the two front run channel screws.
(Refer to 23 - BODY/DOOR - FRONT/GLASS RUN
CHANNEL - REMOVAL)
(6) Remove the inner belt molding. (Refer to 23 -
BODY/WEATHERSTRIP/SEALS/FRONT DOOR
INNER BELT WEATHERSTRIP - REMOVAL)
(7) Disengage the glass from the regulator and
lower into the door.
(8) Twist the glass forward in the door window
opening and remove.
INSTALLATION
(1) Position the glass into the window opening.(2) Engage the glass into the glass run weather-
strip.
(3) Raise the glass within the door opening and
connect the window regulator to the lift plate.
(4) Install the nuts and tighten to 10 N´m (89 in.
lbs.).
(5) Install the inner belt molding. (Refer to 23 -
BODY/WEATHERSTRIP/SEALS/FRONT DOOR
INNER BELT WEATHERSTRIP - INSTALLATION)
(6) Position the front run channel and install the
screws. (Refer to 23 - BODY/DOOR - FRONT/GLASS
RUN CHANNEL - INSTALLATION)
(7) Remove the window switch from the wire har-
ness, if equipped.
(8) Remove the window handle, if equipped.
(9) Install the waterdam. (Refer to 23 - BODY/
DOOR - FRONT/WATERDAM - INSTALLATION)
EXTERIOR HANDLE
REMOVAL
(1) Remove the door glass. (Refer to 23 - BODY/
DOOR - FRONT/DOOR GLASS - REMOVAL)
(2) Disconnect the lock switch electrical connector,
if equipped. (Fig. 3)
(3) Disconnect the actuator rods at the handle.
(4) Remove the nuts and remove the handle.
Fig. 2 DOOR GLASS POSITIONING
1 - SIGHT WINDOW
2 - WIDOW REGULATOR
3 - SIGHT WINDOW
4 - REGULATOR STABILIZER
Fig. 3 EXTERIOR HANDLE
1 - EXTERIOR HANDLE
2 - NUTS (2)
3 - ELECTRICAL CONNECTOR
4 - FRONT DOOR
5 - DOOR LATCH ASSEMBLY
6 - LATCH ACTUATOR ROD
7 - LOCK SWITCH WIRE HARNESS
8 - KEY CYLINDER ACTUATOR ROD
23 - 20 DOOR - FRONTDR
DOOR (Continued)

ADJUSTMENTS
ADJUSTMENT
(1) Using a grease pencil or equivalent, mark the
position of the striker to aid in adjustment.
(2) Loosen the striker bolts.
(3) Change the striker position to adjust the rear
gap and flush measurement. (Refer to 23 - BODY/
BODY STRUCTURE/GAP AND FLUSH - SPECIFI-
CATIONS)
(4) Tighten the bolts to 28 N´m (21 ft. lbs.).
LOCK CYLINDER
REMOVAL
(1) Remove the exterior handle. (Refer to 23 -
BODY/DOOR - FRONT/EXTERIOR HANDLE -
REMOVAL)
(2) Remove the clip and remove the lock cylinder
lever and switch, if equipped.
(3) Remove the screw and remove the lock cylin-
der. (Fig. 11)
INSTALLATION
(1) Install the lock cylinder and install the screw.
(2) Install the lock cylinder switch, if equipped,
lever and retaining clip.
(3) Install the exterior handle. (Refer to 23 -
BODY/DOOR - FRONT/EXTERIOR HANDLE -
INSTALLATION)
TRIM PANEL
REMOVAL
(1) Remove the window crank, if equipped. (Fig.
13)
(2) Remove the interior handle. (Refer to 23 -
BODY/DOOR - FRONT/INSIDE HANDLE ACTUA-
TOR - REMOVAL)
(3) Remove the screws at the mirror flag and near
the inside handle. (Fig. 12)
CAUTION: Trim panel is attached to the door using
hooks molded into the panel. Do not pull the trim
panel straight off or damage to the panel and/or
power switch assembly may occur.
(4) Lift the trim panel up off the belt seal and
attachment hooks and separate the panel from the
door slightly.
(5) Disconnect the power window switch electrical
connector, if equipped, and remove the trim panel.
INSTALLATION
(1) Install the window switch into the trim panel,
if equipped.
(2) Position the trim panel onto the lower hooks
and connect the power window switch electrical con-
nector, if equipped.
(3) Position the remaining trim panel attachment
hooks into the door panel and seat the trim panel
into the belt seal fully.
(4) Install the screws near the inside handle and
at the mirror flag.
Fig. 11 LOCK CYLINDER
1 - LOCK CYLINDER
2 - EXTERIOR HANDLE
3 - SCREW
4 - LOCK SWITCH WIRE HARNESS
Fig. 12 TRIM PANEL ASSEMBLY
1 - SCREW INSERT (2)
2 - SCREWS (2)
3 - DOOR TRIM PANEL
4 - LOWER SCREWS (3)
5 - ATTACHMENT HOOKS
23 - 24 DOOR - FRONTDR
LATCH STRIKER (Continued)

HOOD
TABLE OF CONTENTS
page page
HINGE
REMOVAL.............................46
INSTALLATION.........................46
HOOD
REMOVAL.............................46
INSTALLATION.........................47
LATCH
REMOVAL.............................47
INSTALLATION.........................47LATCH RELEASE CABLE/HANDLE ASSEMBLY
REMOVAL.............................47
INSTALLATION.........................47
LATCH STRIKER / SECONDARY CATCH
REMOVAL.............................47
INSTALLATION.........................48
SUPPORT CYLINDER
REMOVAL.............................48
INSTALLATION.........................48
HINGE
REMOVAL
NOTE: It is not necessary to remove the hood to
replace one or both hinges. The hinges can be
replaced one at a time.
(1) Remove the cowl grille. (Refer to 23 - BODY/
EXTERIOR/COWL GRILLE - REMOVAL)
(2) Using a grease pencil or equivalent, mark the
position of the hinge on the hood.
(3) Remove the fender support bolt. (Fig. 1)
(4) Remove the support cylinder. (Refer to 23 -
BODY/HOOD/SUPPORT CYLINDER - REMOVAL)
(5) Remove the hood nuts.
(6) Remove the wheelhouse splash shield. (Refer to
23 - BODY/EXTERIOR/FRONT WHEELHOUSE
SPLASH SHIELD - REMOVAL)
(7) From inside the fender, remove the two hinge
bolts. (Fig. 2)
(8) Slide the hinge forward and remove from the
fender rail.
INSTALLATION
(1) Install the hinge and slide back into position
on the fender rail.
(2) From inside the fender, install the two hinge
bolts and tighten to 20 N´m (15 ft. lbs.).
(3) Install the hood nuts and line up the marks
made previously.
(4) Tighten the nuts to 23 N´m (17 ft. lbs.).
(5) Install the support cylinder. (Refer to 23 -
BODY/HOOD/SUPPORT CYLINDER - INSTALLA-
TION)
(6) Install the fender support bolt and tighten to
11 N´m (8 ft. lbs.).(7) Check hood fit and adjust if required. (Refer to
23 - BODY/BODY STRUCTURE/GAP AND FLUSH -
SPECIFICATIONS)
(8) Install the cowl grille. (Refer to 23 - BODY/EX-
TERIOR/COWL GRILLE - INSTALLATION)
(9) Install the wheelhouse splash shield. (Refer to
23 - BODY/EXTERIOR/FRONT WHEELHOUSE
SPLASH SHIELD - INSTALLATION)
HOOD
REMOVAL
(1) Open the hood.
(2) Using a grease pencil or equivalent, mark the
position of the hinges on the hood.
(3) Remove the hood hinge nuts and remove the
hood.
Fig. 1 HINGE/FENDER BOLT
1 - FENDER
2 - FENDER SUPPORT BOLT
3 - HINGE
23 - 46 HOODDR

INSTALLATION
(1) Install the latch striker/secondary catch and
install the bolts.
(2) Tighten the bolts to 11 N´m (8 ft. lbs.).
(3) Install the release handle and connect to the
secondary catch.
(4) Check the hood fit and adjust if required.
(Refer to 23 - BODY/BODY STRUCTURE/GAP AND
FLUSH - SPECIFICATIONS)
SUPPORT CYLINDER
REMOVAL
NOTE: The support cylinders can be replaced one
at a time.
(1) Open the hood and support.
NOTE: Lift the clips only enough to release the ball
studs. (Fig. 6)
(2) Using a small flat bladed tool, or equivalent,
release the upper retaining clips while pulling the
ball socket away from the ball stud. (Fig. 5)
CAUTION: Do not pull the supports from the middle
while removing.
(3) Pulling at the ends only, remove the support
cylinder.
INSTALLATION
(1) Make sure the retaining clips are seated into
the ball socket fully.
CAUTION: Do not install the support cylinders by
pressing at the center of the cylinder. Press the
ends only.
(2) Install the support cylinder over the ball studs
with the thin end connected to the body side of the
hinge and the retaining clips snapping into place.
Fig. 4 HOOD LATCH STRIKER/SECONDARY CATCH
1 - GRILLE
2 - LATCH STRIKER/SECONDARY CATCH
3 - BOLTS (2)
4 - SECONDARY CATCH RELEASE HANDLE
5 - GRILLE FRAME
Fig. 5 UPPER SUPPORT CYLINDER REMOVAL -
TYPICAL
1 - BALL SOCKET
2 - RETAINING CLIP
3 - FLAT BLADED TOOL
4 - BALL STUD
Fig. 6 UPPER SUPPORT CYLINDER RETAINING
CLIP
1 - RETAINING CLIP
2 - BALL SOCKET
3 - BALL STUD
23 - 48 HOODDR
LATCH STRIKER / SECONDARY CATCH (Continued)

INTERIOR
TABLE OF CONTENTS
page page
INTERIOR
CAUTION.............................62
4WD FLOOR SHIFT BOOT
REMOVAL.............................62
INSTALLATION.........................62
A-PILLAR TRIM/GRAB HANDLE
REMOVAL.............................63
INSTALLATION.........................63
B-PILLAR LOWER TRIM
REMOVAL.............................63
INSTALLATION.........................64
B-PILLAR UPPER TRIM
REMOVAL.............................64
INSTALLATION.........................64
CARPETS AND FLOOR MATS
REMOVAL.............................65
INSTALLATION.........................65
COAT HOOK
REMOVAL.............................66
INSTALLATION.........................66
COWL TRIM
REMOVAL.............................66
INSTALLATION.........................66
C-PILLAR LOWER TRIM
REMOVAL.............................66
INSTALLATION.........................67
C-PILLAR UPPER TRIM
REMOVAL.............................67
INSTALLATION.........................67
FLOOR CONSOLE
REMOVAL.............................67
INSTALLATION.........................67
HEADLINER
REMOVAL.............................68INSTALLATION.........................68
B-PILLAR GRAB HANDLE
REMOVAL.............................68
INSTALLATION.........................68
REAR CAB BACK PANEL TRIM
REMOVAL.............................68
INSTALLATION.........................69
REAR VIEW MIRROR
REMOVAL.............................69
INSTALLATION
INSTALLATION.......................70
INSTALLATION - REAR VIEW MIRROR
SUPPORT BRACKET...................70
SUN VISOR
REMOVAL.............................70
INSTALLATION.........................70
SUN VISOR SUPPORT
REMOVAL.............................70
INSTALLATION.........................71
BODY VENT
REMOVAL.............................71
INSTALLATION.........................71
REAR DOOR SILL TRIM COVER
REMOVAL.............................71
INSTALLATION.........................71
LOAD FLOOR
REMOVAL.............................71
INSTALLATION.........................72
LOAD FLOOR SUPPORT CYLINDER
REMOVAL.............................72
INSTALLATION.........................72
INTERIOR
CAUTION
CAUTION:: Do not attempt to remove interior trim
panels/moldings without first removing the neces-
sary adjacent panels. To avoid damaging the pan-
els, ensure that all the screws and clips are
removed before attempting to remove an interior
trim panel/molding. Trim panels are somewhat flex-
ible but can be damaged if handled improperly.
4WD FLOOR SHIFT BOOT
REMOVAL
(1) Using a small pry bar or equivalent, remove
the insert, the nut and remove the shifter knob. (Fig.
2)
(2) Using a trim stick C-4755 or equivalent, pry up
the boot from the console. (Fig. 1)
INSTALLATION
(1) Position the shift boot over the shifter lever
fully seat onto the console.
23 - 62 INTERIORDR

INSTALLATION
(1) Install the load floor and install the bolts.
(2) Tighten the bolts to 40 N´m (30 ft. lbs.).
(3) Fold the load floor down and install the nuts.
(4) Tighten the nuts to 25 N´m (18 ft. lbs.).
LOAD FLOOR SUPPORT
CYLINDER
REMOVAL
(1) Open the load floor.
(2) Remove the snap clips and retaining pins. (Fig.
24)
(3) Remove the support cylinder.
INSTALLATION
(1) Install the support cylinder with the thin end
down.
(2) Install the retaining pins and clips.
Fig. 23 REAR LOAD FLOOR - TYPICAL
1 - REAR STORAGE BIN
2 - LOAD FLOOR
3 - BOLTS (2)
4 - SUPPORT CYLINDER
Fig. 24 LOAD FLOOR SUPPORT CYLINDER
1 - RETAINING PINS/CLIPS (2)
2 - LOAD FLOOR
3 - SUPPORT CYLINDER
23 - 72 INTERIORDR
LOAD FLOOR (Continued)

After the system has been tested for leaks and
evacuated, a refrigerant (R-134a) charge can be
injected into the system.
NOTE: When connecting the service equipment
coupling to the line fitting, verify that the valve of
the coupling is fully closed. This will reduce the
amount of effort required to make the connection.
(1) If using a separate vacuum pump close all
valves before disconnecting pump. Connect manifold
gauge set to the A/C service ports.
NOTE: Always refer to the underhood HVAC Speci-
fication label for the refrigerant fill level of the vehi-
cle being serviced.
(2) Measure refrigerant (refer to capacities). Refer
to the instructions provided with the equipment
being used.
(3) Verify engine is shut off. Open the suction and
discharge valves. Open the charge valve to allow the
refrigerant to flow into the system. When the trans-
fer of refrigerant has stopped, close the suction and
discharge valve.
(4) If all of the charge did not transfer from the
dispensing device, put vehicle controls into the fol-
lowing mode:
²Automatic transmission in park or manual
transmission in neutral
²Engine at idle
²A/C mode control set to outside air
²A/C mode control set to panel mode
²A/C temperature control set to full cool
²Blower motor control set on highest speed
²Vehicle windows closed
If the A/C compressor does not engage, test the
compressor clutch control circuit and correct any fail-
ure (Refer to 8 - ELECTRICAL/WIRING DIAGRAM
INFORMATION - DIAGNOSIS AND TESTING).
(5) Open the suction valve to allow the remaining
refrigerant to transfer to the system.
WARNING: TAKE CARE NOT TO OPEN THE DIS-
CHARGE (HIGH-PRESSURE) VALVE AT THIS TIME.
(6) Close all valves and test the A/C system perfor-
mance.
(7) Disconnect the charging station or manifold
gauge set. Install the service port caps.
REFRIGERANT CHARGE CAPACITY
The R-134a refrigerant system charge capacity for
this vehicle can be found on the underhood HVAC
specfication tag.
A/C COMPRESSOR
DESCRIPTION
DESCRIPTION - A/C COMPRESSOR
The A/C system on models equipped with the 5.9L
engine use a Sanden SD-7 reciprocating swash plate-
type compressor. This compressor has a fixed dis-
placement of 165 cubic centimeter (10.068 cubic
inches) and has both the suction and discharge ports
located on the cylinder head.
The A/C system on models equipped with the 3.7L,
4.7L and 5.7L engines use a Denso 10S17 reciprocat-
ing swash plate-type compressor. This compressor
has a fixed displacement of 170 cubic centimeter and
has both the suction and discharge ports located on
the cylinder head.
A label identifying the use of R-134a refrigerant is
located on both A/C compressors.
DESCRIPTION - HIGH PRESSURE RELIEF
VALVE
A high pressure relief valve is located on the com-
pressor cylinder head, which is on the rear of the
compressor. This mechanical valve is designed to
vent refrigerant from the system to protect against
damage to the compressor and other system compo-
nents, caused by condenser air flow restriction or an
overcharge of refrigerant.
OPERATION
OPERATION - A/C COMPRESSOR
The A/C compressor is driven by the engine
through an electric clutch, drive pulley and belt
arrangement. The compressor is lubricated by refrig-
erant oil that is circulated throughout the refrigerant
system with the refrigerant.
The compressor draws in low-pressure refrigerant
vapor from the evaporator through its suction port. It
then compresses the refrigerant into a high-pressure,
high-temperature refrigerant vapor, which is then
pumped to the condenser through the compressor dis-
charge port.
The compressor cannot be repaired. If faulty or
damaged, the entire compressor assembly must be
replaced. The compressor clutch, pulley and clutch
coil are available for service.
OPERATION - HIGH PRESSURE RELIEF VALVE
The high pressure relief valve vents the system
when a discharge pressure of 3445 to 4135 kPa (500
to 600 psi) or above is reached. The valve closes
24 - 48 PLUMBINGDR
PLUMBING (Continued)

when a minimum discharge pressure of 2756 kPa
(400 psi) is reached.
The high pressure relief valve vents only enough
refrigerant to reduce the system pressure, and then
re-seats itself. The majority of the refrigerant is con-
served in the system. If the valve vents refrigerant, it
does not mean that the valve is faulty.
The high pressure relief valve is a factory-cali-
brated unit. The valve cannot be adjusted or
repaired, and must not be removed or otherwise dis-
turbed. The valve is only serviced as a part of the
compressor assembly.
DIAGNOSIS AND TESTING - A/C COMPRESSOR
When investigating an air conditioning related
noise, you must first know the conditions under
which the noise occurs. These conditions include:
weather, vehicle speed, transmission in gear or neu-
tral, engine speed, engine temperature, and any
other special conditions. Noises that develop during
air conditioning operation can often be misleading.
For example: What sounds like a failed front bearing
or connecting rod, may be caused by loose bolts, nuts,
mounting brackets, or a loose compressor clutch
assembly.
Drive belts are speed sensitive. At different engine
speeds and depending upon belt tension, belts can
develop noises that are mistaken for a compressor
noise. Improper belt tension can cause a misleading
noise when the compressor clutch is engaged, which
may not occur when the compressor clutch is disen-
gaged. Check the serpentine drive belt condition and
tension as described in Cooling before beginning this
procedure.
(1) Select a quiet area for testing. Duplicate the
complaint conditions as much as possible. Switch the
compressor on and off several times to clearly iden-
tify the compressor noise. Listen to the compressor
while the clutch is engaged and disengaged. Probe
the compressor with an engine stethoscope or a long
screwdriver with the handle held to your ear to bet-
ter localize the source of the noise.
(2) Loosen all of the compressor mounting hard-
ware and retighten. Tighten the compressor clutch
mounting nut. Be certain that the clutch coil is
mounted securely to the compressor, and that the
clutch plate and rotor are properly aligned and have
the correct air gap (Refer to 24 - HEATING & AIR
CONDITIONING/CONTROLS/A/C COMPRESSOR
CLUTCH - INSTALLATION).
(3) To duplicate a high-ambient temperature condi-
tion (high head pressure), restrict the air flow
through the condenser. Install a manifold gauge set
or a DRBIIItscan tool to be certain that the dis-
charge pressure does not exceed 2760 kPa (400 psi).(4) Check the refrigerant system plumbing for
incorrect routing, rubbing or interference, which can
cause unusual noises. Also check the refrigerant lines
for kinks or sharp bends that will restrict refrigerant
flow, which can cause noises (Refer to 24 - HEATING
& AIR CONDITIONING/PLUMBING - STANDARD
PROCEDURE).
(5) If the noise is from opening and closing of the
high pressure relief valve, recover, evacuate and
recharge the refrigerant system (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - STAN-
DARD PROCEDURE), (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - STANDARD
PROCEDURE - REFRIGERANT SYSTEM EVACU-
ATE) and (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM CHARGE). If the high
pressure relief valve still does not seat properly,
replace the compressor (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING/A/C COMPRES-
SOR - REMOVAL).
(6) If the noise is from liquid slugging on the suc-
tion line, replace the accumulator (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING/AC-
CUMULATOR - REMOVAL) and check the refriger-
ant oil level and the refrigerant system charge (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMB-
ING/REFRIGERANT OIL - STANDARD PROCE-
DURE) (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING/ACCUMULATOR -
REMOVAL). If after replacing the accumulator the
slugging condition still exists then replace the com-
pressor.(Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING/A/C COMPRESSOR - REMOVAL).
(7) If the liquid slugging condition continues fol-
lowing accumulator replacement, replace the com-
pressor and repeat Step 1.
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) and (Refer to 24 - HEATING & AIR CON-
DITIONING/PLUMBING - CAUTION).
NOTE: The A/C compressor may be removed and
repositioned without disconnecting the refrigerant
lines or discharging the refrigerant system. Dis-
charging is not necessary if servicing the compres-
sor clutch, clutch coil, engine, engine cylinder head
or the generator.
(1) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
DRPLUMBING 24 - 49
A/C COMPRESSOR (Continued)

²Engine RPMÐ A live reading of engine RPM
to aid the user in accessing the Similar Conditions
Window.
²Adaptive Memory FactorÐ The PCM utilizes
both Short Term Compensation and Long Term Adap-
tive to calculate the Adaptive Memory Factor for
total fuel correction.
²Upstream O2S VoltsÐ A live reading of the
Oxygen Sensor to indicate its performance. For
example, stuck lean, stuck rich, etc.
²SCW Time in Window (Similar Conditions
Window Time in Window)Ð A timer used by the
PCM that indicates that, after all Similar Conditions
have been met, if there has been enough good engine
running time in the SCW without failure detected.
This timer is used to increment a Good Trip.
²Fuel System Good Trip CounterÐATrip
Counter used to turn OFF the MIL for Fuel System
DTCs. To increment a Fuel System Good Trip, the
engine must be in the Similar Conditions Window,
Adaptive Memory Factor must be less than cali-
brated threshold and the Adaptive Memory Factor
must stay below that threshold for a calibrated
amount of time.
²Test Done This TripÐ Indicates that the
monitor has already been run and completed during
the current trip.
MISFIRE
²Same Misfire Warm-Up StateÐ Indicates if
the misfire occurred when the engine was warmed up
(above 160É F).
²In Similar Misfire WindowÐ An indicator
that 'Absolute MAP When Misfire Occurred' and
'RPM When Misfire Occurred' are all in the same
range when the failure occurred. Indicated by switch-
ing from 'NO' to 'YES'.
²Absolute MAP When Misfire OccurredÐ
The stored MAP reading at the time of failure.
Informs the user at what engine load the failure
occurred.
²Absolute MAPÐ A live reading of engine load
to aid the user in accessing the Similar Conditions
Window.
²RPM When Misfire OccurredÐ The stored
RPM reading at the time of failure. Informs the user
at what engine RPM the failure occurred.
²Engine RPMÐ A live reading of engine RPM
to aid the user in accessing the Similar Conditions
Window.
²Adaptive Memory FactorÐ The PCM utilizes
both Short Term Compensation and Long Term Adap-
tive to calculate the Adaptive Memory Factor for
total fuel correction.
²200 Rev CounterÐ Counts 0±100 720 degree
cycles.²SCW Cat 200 Rev CounterÐ Counts when in
similar conditions.
²SCW FTP 1000 Rev CounterÐ Counts 0±4
when in similar conditions.
²Misfire Good Trip CounterÐ Counts up to
three to turn OFF the MIL.
²Misfire DataÐ Data collected during test.
²Test Done This TripÐ Indicates YES when the
test is done.
OPERATION - NON-MONITORED CIRCUITS
The PCM does not monitor the following circuits,
systems and conditions that could have malfunctions
causing driveability problems. The PCM might not
store diagnostic trouble codes for these conditions.
However, problems with these systems may cause the
PCM to store diagnostic trouble codes for other sys-
tems or components.EXAMPLE:a fuel pressure
problem will not register a fault directly, but could
cause a rich/lean condition or misfire. This could
cause the PCM to store an oxygen sensor or misfire
diagnostic trouble code
FUEL PRESSURE
The fuel pressure regulator controls fuel system
pressure. The PCM cannot detect a clogged fuel
pump inlet filter, clogged in-line fuel filter, or a
pinched fuel supply or return line. However, these
could result in a rich or lean condition causing the
PCM to store an oxygen sensor or fuel system diag-
nostic trouble code.
SECONDARY IGNITION CIRCUIT
The PCM cannot detect an inoperative ignition coil,
fouled or worn spark plugs, ignition cross firing, or
open spark plug cables.
CYLINDER COMPRESSION
The PCM cannot detect uneven, low, or high engine
cylinder compression.
EXHAUST SYSTEM
The PCM cannot detect a plugged, restricted or
leaking exhaust system, although it may set a fuel
system fault.
FUEL INJECTOR MECHANICAL MALFUNCTIONS
The PCM cannot determine if a fuel injector is
clogged, the needle is sticking or if the wrong injector
is installed. However, these could result in a rich or
lean condition causing the PCM to store a diagnostic
trouble code for either misfire, an oxygen sensor, or
the fuel system.
25 - 8 EMISSIONS CONTROLDR
EMISSIONS CONTROL (Continued)