Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Jeep Cherokee XJ 1997.1999-2001 Approved 1999 XJ Jeep Cherokee EXJ_8A
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download EXJ_8A documenatation <<
Text preview - extract from the document
XJ BATTERY 8A - 1
BATTERY
CONTENTS
page page
DESCRIPTION AND OPERATION REMOVAL AND INSTALLATION
BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DIAGNOSIS AND TESTING SPECIFICATIONS
BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SERVICE PROCEDURES
BATTERY CHARGING . . . . . . . . . . . . . . . . . . . . 13
DESCRIPTION AND OPERATION Rapid loss of electrolyte can be caused by an over-
charging condition. Be certain to diagnose the charg-
BATTERY ing system before returning the vehicle to service.
Refer to Charging System in the Diagnosis and
DESCRIPTION Testing section of Group 8C - Charging System for
A large capacity, low-maintenance storage battery more information.
is standard factory-installed equipment on this The factory-installed battery also has a built-in
model. This battery is designed to provide a safe, effi- test indicator (hydrometer). The color visible in the
cient and reliable means of storing electrical energy sight glass of the indicator will reveal the battery
in a chemical form. This means of energy storage condition. Refer to Built-In Test Indicator in the
allows the battery to produce the electrical energy Diagnosis and Testing section of this group for more
required to operate the engine starting system, as information.
well as to operate many of the other vehicle acces- This group covers only the battery diagnostic and
sory systems for limited durations while the engine service procedures. For battery maintenance sched-
and/or the charging system are not operating. ules and jump starting procedures, see the owner's
The factory-installed low-maintenance bat- manual in the vehicle glove box, or refer to Mainte-
tery has removable battery cell caps. Water can nance Schedules and Jump Starting, Towing
be added to this battery. The battery is not sealed and Hoisting in Group 0 - Lubrication and Mainte-
and has vent holes in the cell caps (Fig. 1). The nance. While battery charging can be considered a
chemical composition within the low-maintenance maintenance procedure, battery charging information
battery reduces battery gassing and water loss, at is located in this group. This was done because the
normal charge and discharge rates. battery must be fully-charged before any diagnosis
can be performed.
Group 8A covers the Battery, Group 8B covers the
Starting Systems, and Group 8C covers the Charging
System. We have separated these systems to make it
easier to locate the information you are seeking
within this Service Manual. However, when attempt-
ing to diagnose any of these systems, it is important
that you keep their interdependency in mind.
The battery, starting, and charging systems in the
vehicle operate with one another, and must be tested
as a complete system. In order for the vehicle to start
and charge properly, all of the components that are
used in these systems must perform within specifica-
tions. It is important that the battery, starting, and
charging systems be thoroughly tested and inspected
any time a battery needs to be charged or replaced.
The cause of abnormal discharge, overcharging, or
Fig. 1 Low-Maintenance Battery - Typical early battery failure must be diagnosed and corrected
before a battery is replaced or returned to service.
8A - 2 BATTERY XJ
DESCRIPTION AND OPERATION (Continued)
The diagnostic procedures used in each of these age potential of each cell is reduced. However, by
groups include the most basic conventional diagnostic charging the battery with a voltage higher than that
methods, to the more sophisticated On-Board Diag- of the battery, the battery discharging process is
nostics (OBD) built into the Powertrain Control Mod- reversed.
ule (PCM). Use of an induction-type milliampere Charging the battery gradually changes the sul-
ammeter, volt/ohmmeter, battery charger, carbon pile fated lead plates back into sponge lead and lead
rheostat (load tester), and 12-volt test lamp may be oxide, and the water back into sulfuric acid. This
required. action restores the difference in the electron charges
All OBD-sensed systems are monitored by the deposited on the plates, and the voltage potential of
PCM. Each monitored circuit is assigned a Diagnos- the battery cells.
tic Trouble Code (DTC). The PCM will store a DTC in For a battery to remain useful, it must be able to
electronic memory for any failure it detects. Refer to produce high-amperage current over an extended
On-Board Diagnostic Test For Charging System period. A battery must also be able to accept a
in the Diagnosis and Testing section of Group 8C - charge, so that its voltage potential may be restored.
Charging System for more information. In addition to producing and storing electrical
energy, the battery serves as a capacitor, or voltage
NOTE: This group covers both Left-Hand Drive stabilizer, for the electrical system of the vehicle. It
(LHD) and Right-Hand Drive (RHD) versions of this absorbs most abnormal or transient voltages caused
model. Whenever required and feasible, the RHD by the switching of any of the electrical components
versions of affected vehicle components have been in the vehicle.
constructed as mirror-image of the LHD versions. The battery is vented to release excess hydrogen
While most of the illustrations used in this group gas that is created when the battery is being charged
represent only the LHD version, the diagnostic and or discharged. However, even with these vents, the
service procedures outlined can generally be hydrogen gas can collect in or around the battery. If
applied to either version. Exceptions to this rule hydrogen gas is exposed to flame or sparks, it may
have been clearly identified as LHD or RHD, if a ignite.
special illustration or procedure is required. If the electrolyte level is low, the battery may arc
internally and explode. If the battery is equipped
with removable cell caps, add distilled water when-
OPERATION ever the electrolyte level is below the top of the
The storage battery is a device used to store elec- plates. If the battery cell caps cannot be removed, the
trical energy potential in a chemical form. When an battery must be replaced if the electrolyte level
electrical load is applied to the battery terminals, an becomes low.
electrochemical reaction occurs within the battery.
This reaction causes the battery to discharge electri- BATTERY SIZE AND RATINGS
cal current. The battery Group Size number, the Cold Cranking
The battery is made up of six individual cells that Amperage (CCA) rating, and the Reserve Capacity
are connected in series. Each cell contains positively (RC) rating or Ampere-Hours (AH) rating can be
charged plate groups made of lead oxide, and nega- found on the original equipment battery label. Be
tively charged plate groups made of sponge lead. certain that a replacement battery has the correct
These dissimilar metal plates are submerged in a Group Size number, as well as CCA, and RC or AH
sulfuric acid and water solution called an electrolyte. ratings that equal or exceed the original equipment
As the battery discharges, a gradual chemical specification for the vehicle being serviced.
change takes place within each cell. The sulfuric acid Refer to Battery Classifications and Ratings in
in the electrolyte combines with the plate materials, the Specifications section of this group for more infor-
causing both plates to slowly change to lead sulfate. mation. Battery sizes and ratings are discussed in
At the same time, oxygen from the positive plate more detail below.
material combines with hydrogen from the sulfuric
acid, causing the electrolyte to become mainly water. GROUP SIZE
The chemical changes within the battery are The outside dimensions and terminal placement of
caused by the movement of excess or free electrons the battery conform to standards established by the
between the positive and negative plate groups. This Battery Council International (BCI). Each battery is
movement of electrons produces a flow of electrical assigned a BCI Group Size number to help identify a
current through the load device attached to the bat- correctly-sized replacement.
tery terminals.
As the plate materials become more similar chem-
ically, and the electrolyte becomes less acid, the volt-
XJ BATTERY 8A - 3
DESCRIPTION AND OPERATION (Continued)
COLD CRANKING AMPERAGE When installing a battery, be certain that the hold
The Cold Cranking Amperage (CCA) rating specifies down fasteners are tightened to the proper specifica-
how much current (in amperes) the battery can deliver tions. Improper hold down fastener tightness,
for thirty seconds at -18◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo