Chrysler PT Cruiser Service & Repair Manual page 339

PT
BATTERY SYSTEM (Continued)
CONDITION
THE BATTERY SEEMS
WEAK OR DEAD WHEN
ATTEMPTING TO START
THE ENGINE.
BATTERY SYSTEM DIAGNOSIS
POSSIBLE CAUSES
1. The electrical system
ignition-off draw is excessive.
2. The charging system is
faulty.
3. The battery is discharged.
4. The battery terminal
connections are loose or
corroded.
5. The battery has an
incorrect size or rating for
this vehicle.
6. The battery is faulty.
7. The starting system is
faulty.
8. The battery is physically
damaged.
BATTERY SYSTEM
CORRECTION
1. Refer to the IGNITION-OFF DRAW TEST
Standard Procedure for the proper test
procedures. Repair the excessive ignition-off
draw, as required.
2. Determine if the charging system is performing
to specifications. Refer to Charging System for
additional charging system diagnosis and testing
procedures. Repair the faulty charging system, as
required.
3. Determine the battery state-of-charge using the
Micro 420 battery tester. Refer to the Standard
Procedures in this section for additional test
procedures. Charge the faulty battery, as
required.
4. Refer to Battery Cables for the proper battery
cable diagnosis and testing procedures. Clean
and tighten the battery terminal connections, as
required.
5. Refer to Battery System Specifications for the
proper size and rating. Replace an incorrect
battery, as required.
6. Test the battery using the Micro 420 battery
tester. Refer to the Standard Procedures in this
section for additional test procedures. Replace
the faulty battery, as required.
7. Determine if the starting system is performing
to specifications. Refer to Starting System for the
proper starting system diagnosis and testing
procedures. Repair the faulty starting system, as
required.
8. Inspect the battery for loose terminal posts or a
cracked and leaking case. Replace the damaged
battery, as required.
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