Jeep 200 Cherokee Service Manual page 324

XJ
DIAGNOSIS AND TESTING (Continued)
Condition
The battery seems weak or
dead when attempting to start
the engine.
Battery Diagnosis
Possible Causes
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.
Correction
1. Refer to Battery in the index of this service
manual for the location of the proper battery
specifications. Replace an incorrect battery, as
required.
2. Inspect the battery for loose terminal posts or a
cracked and leaking case. Replace the damaged
battery, as required.
3. Refer to Battery Cables in the index of this
service manual for the location of the proper
battery cable diagnosis and testing procedures.
Clean and tighten the battery terminal
connections, as required.
4. Determine the battery state-of-charge. Refer to
Built-In Test Indicator, Hydrometer Test, or
Open-Circuit Voltage Test in this section for the
proper test procedures. Charge the faulty battery,
as required.
5. Refer to Ignition-Off Draw Test in this section
for the proper test procedures. Repair the faulty
electrical system, as required.
6. Determine the battery cranking capacity. Refer
to Load Test in this section for the proper test
procedures. Replace the faulty battery, as
required.
7. Determine if the starting system is performing
to specifications. Refer to Starting System in the
index of this service manual for the location of the
proper starting system diagnosis and testing
procedures. Repair the faulty starting system, as
required.
8. Determine if the charging system is performing
to specifications. Refer to Charging System in the
index of this service manual for the location of the
proper charging system diagnosis and testing
procedures. Repair the faulty charging system, as
required.
BATTERY 8A - 7