Jeep Cherokee XJ 1999 Manual - page 5
Battery Diagnosis
Condition
Possible Causes
Correction
The battery seems weak or
dead when attempting to start
the engine.
1. The battery has an
incorrect size or rating for
this vehicle.
2. The battery is physically
damaged.
3. The battery terminal
connections are loose or
corroded.
4. The battery is discharged.
5. The electrical system
ignition-off draw is excessive.
6. The battery is faulty.
7. The starting system is
faulty.
8. The charging system is
faulty.
1. Refer to Battery in the Specifications section of
this group. Replace an incorrect battery with the
correct battery.
2. Inspect the battery for loose terminal posts or a
cracked and leaking case. Replace the battery, if
damaged.
3. Refer to Voltage Drop Test in the Diagnosis
and Testing section of this group. Clean and
tighten the battery terminal connections, if
required.
4. Determine the battery state-of-charge. Refer to
Built-In Test Indicator, Hydrometer Test, or
Open-Circuit Voltage Test in the Diagnosis and
Testing section of this group. Charge the battery,
if required.
5. Refer to Ignition-Off Draw Test in the Diagnosis
and Testing section of this group. Repair the
electrical system, if required.
6. Determine the battery cranking capacity. Refer
to Load Test in the Diagnosis and Testing section
of this group. Replace the battery, if required.
7. Determine if the starting system is performing
to specifications. Refer to Starting System in the
Diagnosis and Testing section of Group 8B -
Starting Systems for more information. Repair the
starting system, if required.
8. Determine if the charging system is performing
to specifications. Refer to Charging System in the
Diagnosis and Testing section of Group 8C -
Charging System for more information. Repair the
charging system, if required.
XJ
BATTERY
8A - 5
DIAGNOSIS AND TESTING (Continued)