Chrysler New Yorker. Manual — part 54
STATE OF CHARGE
A completely discharged battery requires more
charging time than a partially charged battery. Elec-
trolyte is nearly pure water in a completely dis-
charged
battery. At
first,
the
charging
current
amperage will be low. As water is converted back to
sulfuric acid inside the battery, the current amp rate
will rise. Also, the specific gravity of the electrolyte
will rise, bringing the green ball (Fig. 4) into view at
approximately 75 percent state-of-charge.
DIAGNOSIS AND TESTING
BATTERY BUILT-IN TEST INDICATOR
TEST INDICATOR
The Test Indicator (Fig. 5), (Fig. 4), and (Fig. 3)
measures the specific gravity of the electrolyte. Spe-
cific Gravity (SG) of the electrolyte will show state-
of-charge (voltage). The test indicator WILL NOT
show cranking capacity of the battery. Refer to Bat-
tery Load Test for more information. Look into the
sight glass (Fig. 4), (Fig. 3) and note the color of the
indicator. Refer to the following description of colors:
NOTE: GREEN = 75 to 100% state-of-charge
The battery is adequately charged for further test-
ing and may be returned to use. If the vehicle will
not crank for a maximum 15 seconds, refer to BAT-
TERY LOAD TEST in this Group for more informa-
tion.
NOTE: BLACK OR DARK = 0 to 75% state-of-charge
The battery is INADEQUATELY charged and must
be charged until green dot is visible, (12.4 volts or
greater) before the battery is tested or returned to
use. Refer to Causes of Battery Discharging in this
Group for more information.
NOTE: CLEAR COLOR = Replace Battery
WARNING:
DO NOT CHARGE, ASSIST BOOST,
LOAD TEST, OR ADD WATER TO THE BATTERY
WHEN CLEAR COLOR DOT IS VISIBLE. PERSONAL
INJURY MAY OCCUR.
A clear color dot shows electrolyte level in battery
is below the test indicator (Fig. 4). Water cannot be
added to a maintenance free battery. The battery
must be replaced. A low electrolyte level may be
caused by an over charging condition. Refer to Group
8C, Generator for proper test procedures on Vehicle.
BATTERY TEST
To test battery, refer to the Battery Diagnosis and
Testing table and to the proper procedures.
Fig. 4 Reading Test Indicator
Fig. 5 Battery Construction and Test Indicator
8A - 4
BATTERY
300M
DESCRIPTION AND OPERATION (Continued)
BATTERY DIAGNOSIS AND TESTING
STEPS
POSSIBLE CAUSE
CORRECTION
VISUAL INSPECTION
CHECK FOR POSSIBLE
DAMAGE TO BATTERY AND
CLEAN BATTERY.
(1) LOOSE BATTERY POST,
CRACKED BATTERY COVER
OR CASE, LEAKS OR ANY
OTHER PHYSICAL
(2) BATTERY OK.
(1) REPLACE BATTERY
(2) CHECK STATE OF CHARGE.
REFER TO TEST INDICATOR.
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 5-25
MILLIAMPERES.
(2) IOD EXCEEDS 25
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
300M
BATTERY
8A - 5
DIAGNOSIS AND TESTING (Continued)
• 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.
(3) Using an multi-meter, that has least a milliam-
pere range of 200 mA. Set meter to the highest mA
range. Install meter between the battery negative
cable and battery negative post. After all modules
time-out the total vehicle IOD should be less than 25
milliamperes. If ignition off draw is more than 25
milliamperes go to Step 5.
(4) Each time the milliampere meter is discon-
nected and connected, all electronic timer functions
will be activated for approximately one minute. The
Body Control Module (BCM) ignition off draw can
reach 90 milliamperes.
(5) Remove the PDC fuses:
• Interior lamps
• Brake lamp
• IOD
(6) If there is any reading, with fuses removed
there is a short circuit in the wiring. Refer to Group
8W, wiring diagrams. Repair as necessary. If reading
is less than 25 mA go to Step 9.
(7) Install all fuses. After installing fuse, the cur-
rent can reach 90 mA. After time-out the reading
should not exceed 25 mA. If OK go to Step 10. If not,
disconnect:
• Radio
• Body control module
• Remote keyless entry module
(8) Disconnect one component at time, to see if any
component is at fault. If the high reading is not elim-
inated there is a short circuit in the wiring. Refer to
Group 8W, for wiring diagrams and circuit informa-
tion.
(9) Remove interior and brake lamp fuses. Install
the fuses. The milliampere reading should be 2-4 mA.
If reading is higher than 4 mA:
(a) Disconnect PCM.
(b) If reading is OK, replace PCM.
(c) If reading does not change, disconnect the
TCM.
(d) If reading is OK, replace TCM.
(e) If reading stays, there is a short circuit to
one of the modules. Refer to Group 8W, Wiring
Diagrams.
BATTERY LOAD TEST
A fully charged battery must have cranking capac-
ity, to provide the starter motor and ignition system
enough power to start the engine over a broad range
of ambient temperatures. A battery load test will ver-
ify the actual cranking capability of the battery.
WARNING: IF BATTERY SHOWS SIGNS OF FREEZ-
ING, LEAKING, LOOSE POSTS, OR EXCESSIVELY
LOW ELECTROLYTE LEVEL, DO NOT TEST. ACID
BURNS
OR
AN
EXPLOSIVE
CONDITION
MAY
RESULT.
(1) Remove battery from vehicle. The battery top,
cables and posts should be clean. If green dot is not
visible in indicator, charge the battery. Refer to Bat-
tery Charging Procedures.
(2) Connect a Volt/Ammeter/Load tester to the bat-
tery posts (Fig. 6). Rotate the load control knob of the
Carbon pile rheostat to apply a 300 amp load. Apply
this load for 15 seconds to remove the surface charge
from the battery, and return the control knob to off
(Fig. 7).
Fig. 6 Volt-Ammeter Load Tester Connections
Fig. 7 Remove Surface Charge From Battery
8A - 6
BATTERY
300M
DIAGNOSIS AND TESTING (Continued)
(3) Allow the battery to stabilize for 2 minutes,
and then verify open circuit voltage.
(4) Rotate the load control knob on the tester to
maintain 50% of the battery cold crank rating for 15
seconds (Fig. 8). Record the loaded voltage reading
and return the load control to off. Refer to the Bat-
tery Specifications at the rear of this Group.
(5) Voltage drop will vary according to battery
temperature at the time of the load test. Battery
temperature can be estimated by the temperature of
exposure over the preceding several hours. If the bat-
tery has been charged or boosted a few minutes prior
to the test, the battery would be slightly warmer.
Refer to Load Test Temperature Chart for proper
loaded voltage reading.
(6) If battery passes load test, it is in good condi-
tion and further tests are not necessary. If it fails
load test, it should be replaced.
BATTERY OPEN CIRCUIT VOLTAGE TEST
An open circuit voltage no load test shows the
state of charge of a battery and whether it is ready
for a load test at 50 percent of the battery’s cold
crank rating. Refer to Battery Load Test. If a battery
has open circuit voltage reading of 12.4 volts or
greater, and will not pass the load test, replace the
battery because it is defective. To test open circuit
voltage, perform the following operation.
(1) Remove both battery cables, negative cable
first. Battery top, cables and posts should be clean. If
green dot is not visible in indicator, charge the bat-
tery. Refer to Battery Charging Procedures.
(2) Connect a Volt/Ammeter/Load tester to the bat-
tery posts (Fig. 6). Rotate the load control knob of the
Carbon pile rheostat to apply a 300 amp load. Apply
this load for 15 seconds to remove the surface charge
from the battery, and return the control knob to off
(Fig. 7).
(3) Allow the battery to stabilize for 2 minutes,
and then verify the open circuit voltage (Fig. 9).
(4) This voltage reading will approximate the state
of charge of the battery. It will not reveal battery
cranking capacity. Refer to Battery Open Circuit
Voltage table.
Fig. 8 Load 50% Cold Crank Rating
LOAD TEST TEMPERATURE
MINIMUM
VOLTAGE
TEMPERATURE
CELSIUS
FAHRENHEIT
9.6 VOLTS
21° AND
ABOVE
70° AND ABOVE
9.5 VOLTS
16°
60°
9.4 VOLTS
10°
50°
9.3 VOLTS
4°
40°
9.1 VOLTS
-1°
30°
8.9 VOLTS
-7°
20°
8.7 VOLTS
-12°
10°
8.5 VOLTS
-18°
0°
Fig. 9 Testing Open Circuit Voltage
BATTERY OPEN CIRCUIT VOLTAGE
OPEN CIRCUIT VOLTS
CHARGE PERCENTAGE
11.7 VOLTS OR LESS
0%
12.0 VOLTS
25%
12.2 VOLTS
50%
12.4 VOLTS
75%
12.6 VOLTS OR MORE
100%
300M
BATTERY
8A - 7
DIAGNOSIS AND TESTING (Continued)
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