1994 JEEP CHEROKEE service

Control Information (VECI) label schematics, those
shown on the VECI label should be used.DRB SCAN TOOL
For operation of the DRB scan tool, refer to the ap-
propriate Powertrain Diagnostic Procedures service
manual.
VACUUM ROUTING SCHEMATICÐ2.5L 4 CYLINDER ENGINE
Fig. 3 VECI LabelÐTypical
25 - 2 EMISSION CONTROL SYSTEMSJ

CHRYSLER
CORPORATION
SERVICE MANUAL and SUPPLEMENT
1994 JEEP
T
To order the special service tools used and
illustrated, please refer to the instructions on
inside back cover.
NO PART OF THIS PUBLICATION MAY BE
REPRODUCED, STORED IN A RETRIEVAL
SYSTEM, OR TRANSMITTED, IN ANY FORM
OR BY ANY MEANS, ELECTRONIC, ME-
CHANICAL, PHOTOCOPYING, RECORDING,
OR OTHERWISE, WITHOUT THE PRIOR
WRITTEN PERMISSION OF CHRYSLER
CORPORATION.
Chrysler Corporation reserves the right to make changes in design or to
make additions to or improvements in its products without imposing any ob-
ligations upon itself to install them on its products previously manufactured.
Litho in U.S.A. Copyright 1993 Chrysler Corporation 20M0693
NEXT PAGE©

FOREWORD
The information contained in this service manual has been prepared for the professional automotive tech-
nician involved in daily repair operations. This manual does not cover theory of operation, which is addressed
in service training material. Information describing the operation and use of standard and optional equipment
is included in the Owner 's Manual provided with the vehicle.
Information in this manual is divided into groups. These groups contain general information, diagnosis,
testing, adjustments, removal, installation, disassembly, and assembly procedures for the components. To as-
sist in locating a group title page, use the Group Tab Locator on the following page. The solid bar after the
group title is aligned to a solid tab on the first page of each group. The first page of the group has a contents
section that lists major topics within the group. If you are not sure which Group contains the information you
need, look up the Component/System in the alphabetical index located in the rear of this manual.
A Service Manual Comment form is included at the rear of this manual. Use the form to provide Chrysler
Corporation with your comments and suggestions.
Tightening torques are provided as a specific value throughout this manual. This value represents the
midpoint of the acceptable engineering torque range for a given fastener application. These torque values are
intended for use in service assembly and installation procedures using the correct OEM fasteners. When re-
placing fasteners, always use the same type (part number) fastener as removed.
Chrysler Corporation reserves the right to change testing procedures, specifications, diagnosis, repair
methods, or vehicle wiring at any time without prior notice or incurring obligation.
NOTE: The acronyms, terminology and nomenclature used to identify emissions related components in
this manual may have changed from prior publications. These new terms are in compliance with S.A.E.
recommended practice J1930.
NEXT PAGE©

NOTE: Groups with the suffix ª-Sº are supplements to
the original service manual publication.
GROUP TAB LOCATOR PAGE
INIntroduction
0Lubrication and Maintenance
2Front Suspension and Axle
3Rear Suspension and Axles
5Brakes
6Clutch
7Cooling System
8Electrical
9Engines
11Exhaust System and Intake Manifold
13Frame and Bumpers
14Fuel System
16Propeller Shafts
19Steering
21Transmissions and Transfer Cases
22Wheels and Tires
23Body Components
24Heating and Air Conditioning
24-SAir Conditioning
25Emission Control Systems
Index
Index Supplement
Service Manual Comment Forms (Rear of Manual)

CHRYSLER
CORPORATION
SERVICE MANUAL
1994 JEEP
T
To order the special service tools used and
illustrated, please refer to the instructions on
inside back cover.
NO PART OF THIS PUBLICATION MAY BE
REPRODUCED, STORED IN A RETRIEVAL
SYSTEM, OR TRANSMITTED, IN ANY FORM
OR BY ANY MEANS, ELECTRONIC, ME-
CHANICAL, PHOTOCOPYING, RECORDING,
OR OTHERWISE, WITHOUT THE PRIOR
WRITTEN PERMISSION OF CHRYSLER
CORPORATION.
Chrysler Corporation reserves the right to make changes in design or to
make additions to or improvements in its products without imposing any ob-
ligations upon itself to install them on its products previously manufactured.
Litho in U.S.A. Copyright 1993 Chrysler Corporation 20M1193

FOREWORD
The information contained in this service manual
has been prepared for the professional automotive
technician involved in daily repair operations. This
manual does not cover theory of operation, which is
addressed in service training material. Information
describing the operation and use of standard and op-
tional equipment is included in the Owner 's Manual
provided with the vehicle.
This manual is designed as a supplement to be
used along with the 1994 Jeep Cherokee/Wrangler
Service Manual, 81-370-4146. It includes information
related to 1994 vehicles built after December, 1993.
It should be used in conjunction with the initial man-
ual for complete vehicle coverage.
This contains general information, diagnosis, and
testing procedures for the new R134a refrigerant sys-
tem.
The Component and System Index of th is man-
ual identifies the correct page for the component or
system to be serviced. In addition, a Service Manual
Comment form is included at the rear of this manual.
Use the form to provide Chrysler Corporation with
your comments and suggestions.
Chrysler Corporation reserves the right to
change testing procedures, specifications, diagnosis,
repair methods, or vehicle wiring at any time without
prior notice or incurring obligation.
HEATING AND AIR CONDITIONING 1
INDEX 1
Service Manual Comment Forms (Rear of Manual)
NOTE: The acronyms, terminology and nomenclature used to identify emissions related components in
this manual may have changed from prior publications. These new terms are in compliance with S.A.E.
recommended practice J1930.

If there is not enough space left in the row for all
of the 6-digit SEC code (if used):
²the unused space will remain blank, and
²the code will be listed in the next row.
The last nine positions of row 7 will contain a 2-digit
code, when applicable, and a 6-digit gateline serial
number (same as the last 6 numbers of the VIN).
The last code imprinted on a vehicle code plate will
be followed by the imprinted word END. When two
vehicle code plates are required, the last available
spaces on the first plate will be imprinted with the
letters CTD (for continued).
When a second vehicle code plate is necessary, the
first four spaces on each row will not be used because
of the plate overlap.
ENGINE AND TRANSMISSION/TRANSFER CASE
IDENTIFICATION
When required, refer to Group 9ÐEngines for allengine identification data. Refer to Group 21ÐTrans-
missions for all transmission/transfer case identifica-
tion data.
MAJOR COMPONENT IDENTIFICATION
When required, refer to the applicable service infor-
mation group for major component identification data.
TIRE INFLATION PRESSURE LABEL
The tire inflation pressures label is located on the
glove box door inside panel (Fig. 6). The tires should
also be inspected for visible wear. Also, inspect the
tires for cracks, bulges and other road hazard dam-
age. Refer to Group 22ÐTires And Wheels.
VEHICLE DIMENSION DATA
The vehicle dimension data charts list the exterior
and interior dimensions for each type of Jeeptvehicle.
VEHICLE LOAD DATA
The Vehicle Load Data chart lists the following in-
formation:
²the gross vehicle weight rating (GVWR),
²the gross axle weight ratings (GAWR),
²the cargo weight, and
²the passenger weight for each Jeepttype/body
style.
INTERNATIONAL VEHICLE CONTROL AND DISPLAY
SYMBOLS
Most of the graphic symbols illustrated in the fol-
lowing chart are used to identify various instrument
controls and displays.
Fig. 5 Vehicle Code Plate
VEHICLE CODE DECODING
Fig. 6 Tire Inflation Pressures LabelÐTypical
JINTRODUCTION3

SPECIFICATIONS
SPECIFICATION NOTATIONS
All torque specifications listed in this service man-
ual are in both metric system and SAE/English sys-
tem.
WARNING: THE USE OF INCORRECT ATTACHING
HARDWARE CAN RESULT IN COMPONENT DAM-
AGE AND/OR PERSONAL INJURY.
During all procedures, it is important to retain the
original attaching hardware. If the hardware is not
reusable, replace new hardware with equivalent
specifications.
METRIC SYSTEM NOTATION
The following conversion chart will assist in con-
verting SAE/English units to equivalent metric
units.
TORQUE SPECIFICATIONS
TORQUE CHARTS
If applicable, torque chart(s) for screws, bolts and
nuts is/are provided at the end of each service infor-
mation group. Refer to the Standard Torque Specifi-
cations chart and the bolt grade/class identification
illustrations (Figs. 7 and 8).
It is important to be aware that the torque values
listed in the chart are based on clean and dry bolt
threads. Reduce the applicable listed torque value by
10 percent when the bolt threads are lubricated with
engine oil and by 20 percent if new, plated bolts are
being tightened.Various sizes of (Torx) head fasteners are used
as attaching hardware for numerous compo-
nents in Jeeptvehicles.
BOLT THREAD AND GRADE/CLASS
IDENTIFICATION
THREAD IDENTIFICATION
SAE and metric bolt/nut threads are different. The
difference is described in the Thread Notation chart.
GRADE/CLASS IDENTIFICATION
The SAE bolt strength grades range from grade 2
to grade 8. The higher the grade number, the greater
the bolt strength. The grade identification is deter-
mined by the line marks on the top of each bolt head
(Fig. 7). The actual bolt strength grade corresponds
to the number of line marks plus 2. For example:
²a grade 2 bolt has no line marks on top of the bolt
head;
²a grade 5 bolt has 3 line marks on top of the bolt
head;
²a grade 7 bolt has 5 line marks on top of the bolt
head; and
²a grade 8 bolt has 6 line marks on top of the bolt
head.
The most commonly used metric bolt strength
classes are 9.8 and 12.9. The metric strength class
identification number is imprinted on the head of the
bolt (Fig. 8). The higher the class number, the
greater the bolt strength. Some metric-dimension
nuts are also imprinted with a single-digit strength
class identification number on the nut face.
CONVERSION FORMULAS AND EQUIVALENT VALUES
8 INTRODUCTIONJ