STEPS POSSIBLE CAUSE CORRECTION
TEST INDICATOR
CHECK CHARGE EYE COLOR
(1) GREEN
(2) BLACK
(3) CLEAR
(1) BATTERY IS CHARGED.
PERFORM BATTERY 0PEN
CIRCUIT VOLTAGE TEST
(2) PERFORM BATTERY
CHARGING PROCEDURE.
(3) REPLACE BATTERY.
BATTERY OPEN CIRCUIT
VOLTAGE TEST
(1) BATTERY IS ABOVE 12.40
VOLTS
(2) BATTERY IS BELOW 12.40
VOLTS.
(1) PERFORM THE BATTERY LOAD
TEST.
(2) PERFORM BATTERY
CHARGING PROCEDURE.
BATTERY CHARGING (1) BATTERY ACCEPTED
CHARGE.
(2) BATTERY WILL NOT
ACCEPT CHARGE
(1) ENSURE THAT THE INDICATOR
EYE IS GREEN AND PERFORM
BATTERY 0PEN CIRCUIT VOLTAGE
TEST
(2) PERFORM CHARGING A
COMPLETELY DISCHARGED
BATTERY.
BATTERY LOAD TEST (1) ACCEPTABLE MINIMUM
VOLTAGE.
(2) UNACCEPTABLE MINIMUM
VOLTAGE
(1) BATTERY IS OK TO PUT IN
USE, PERFORM BATTERY
IGNITION OFF DRAW TEST.
(2) REPLACE BATTERY AND
PERFORM BATTERY IGNITION OFF
DRAW TEST.
CHARGING A COMPLETELY
DISCHARGED BATTERY
(1) BATTERY ACCEPTED
CHARGE.
(2) BATTERY WILL NOT
ACCEPT CHARGE.
(1) ENSURE THAT THE INDICATOR
EYE IS GREEN AND PERFORM
BATTERY 0PEN CIRCUIT VOLTAGE
TEST.
(2) REPLACE BATTERY.
IGNITION OFF DRAW TEST (1) IOD IS 5-35
MILLIAMPERES.
(2) IOD EXCEEDS 35
MILLIAMPERES.
(1) VEHICLE IS NORMAL.
(2) ELIMINATE EXCESS IOD DRAW.
ABNORMAL BATTERY DISCHARGING
• Corroded battery posts, cables or terminals.
• Loose or worn generator drive belt.
• Electrical loads that exceed the output of the
charging system due to equipment or accessories
installed after delivery.
• Slow driving speeds in heavy traffic conditions
or prolonged idling with high-amperage electrical
systems in use.
• Defective electrical circuit or component causing
excess Ignition Off Draw (IOD). Refer to Battery
Ignition Off Draw (IOD).
• Defective charging system.
• Defective battery.
BATTERY IGNITION OFF DRAW (IOD)
High current draw on the battery with the ignition
OFF will discharge a battery. After a dead battery is
serviced the vehicle Ignition Off Draw (IOD) should
be checked. Determine if a high current draw condi-
tion exists first check the vehicle with a milliampere
meter.
(1) Verify that all electrical accessories are OFF.
• Remove key from ignition switch
• Turn off all lights
• Trunk lid and glove box door is closed
• Sun visor vanity lights are OFF
• All doors are closed
• Allow the Illuminated Entry System to time out
in approximately 30 seconds, if equipped.
• During Transmission Control Module (TCM)
power down there will be 500 milliamperes present
for 20 minutes. Afterwards less than 1.0 milliampere.
(2) Disconnect battery negative cable.
CAUTION: Always disconnect the milliampere
meter before opening a door.
LH BATTERY 8A - 5
DIAGNOSIS AND TESTING (Continued)
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