charging SUBARU LEGACY 1995 Service User Guide

B: INSPECTION
1. BATTERY
1) External parts
Check for the existence of dirt or cracks on the battery
case, top cover, vent plugs, and terminal posts. If
necessary, clean with water and wipe with a dry cloth.
Apply a thin coat of grease on the terminal posts to prevent
corrosion.
2) Electrolyte level
Check the electrolyte level in each cell. If the level is below
MIN LEVEL, bring the level to MAX LEVEL by pouring dis-
tilled water into the battery cell. Do not fill beyond MAX
LEVEL.
WARNING:

Electrolyte has toxicity; be careful handling the
fluid.

Avoid contact with skin, eyes or clothing. Especially
at contact with eyes, blush with water for 15 minutes
and get prompt medical attention.

Batteries produce explosive gasses. Keep sparks,
flame, cigarettes away.

Ventilate when charging or using in enclosed space.

For safety, in case an explosion does occur, wear
eye protection or shield your eyes when working near
any battery. Never lean over a battery.

Do not let battery fluid contact eyes, skin, fabrics, or
paint-work because battery fluid is corrosive acid.

To lessen the risk of sparks, remove rings, metal
watch-bands, and other metal jewelry. Never allow
metal tools to contact the positive battery terminal and
anything connected to it while you are at the same time
in contact with any other metallic portion of the vehicle
because a short circuit will be caused.
5
6-2SERVICE PROCEDURE
2. Battery

G6M0103
3) Specific gravity of electrolyte
Measure specific gravity of electrolyte using a hydrometer
and a thermometer.
Specific gravity varies with temperature of electrolyte so
that it must be corrected at 20°C (68°F) using the follow-
ing equation:
S
20= St + 0.0007 x (t 20)
S
20:Specific gravity corrected at electrolyte tempera-
ture of 20°C (68°F)
St :Measured specific gravity
t :Measured temperature °C
Determine whether or not battery must be charged,
according to corrected specific gravity.
Standard specific gravity: 1.220 — 1.290 [at 20°C
(68°F)]
Measuring the specific gravity of the electrolyte in the bat-
tery will disclose the state of charge of the battery. The
relation between the specific gravity and the state of
charge is as shown in figure.
C: CHARGING
WARNING:

Do not bring an open flame close to the battery at
this time.
CAUTION:

Prior to charging, corroded terminals should be
cleaned with a brush and common baking soda solu-
tion.

Be careful since battery electrolyte overflows while
charging the battery.

Observe instructions when handling battery
charger.

Before charging the battery on vehicle, disconnect
battery ground terminal. Failure to follow this rule may
damage generator’s diodes or other electrical units.
1. NORMAL CHARGING
Charge the battery at current value specified by manufac-
turer or at approximately 1/10 of battery’s ampere hour
rating.
2. QUICK CHARGING
Quick charging is a method in which the battery is charged
in a short period of time with a relatively large current by
using a quick charger.
Since a large current flow raises electrolyte temperature,
the battery is subject to damage if the large current is used
for prolonged time. For this reason, the quick charging
must be carried out within a current range that will not
increase the electrolyte temperature above 40°C (104°F).
It should be also remembered that the quick charging is a
temporary means to bring battery voltage up to a fair value
and, as a rule, a battery should be charged slowly with a
low current.
6
6-2SERVICE PROCEDURE
2. Battery

CAUTION:

Observe the items in 1. NORMAL CHARGING
[W2C1].

Never use more than 10 amperes when charging the
battery because that will shorten battery life.
3. JUDGMENT OF BATTERY IN CHARGED
CONDITION
1) Specific gravity of electrolyte is held at a specific value
in a range from 1.250 to 1.290 for more than one hour.
2) Voltage per battery cell is held at a specific value in a
range from 2.5 to 2.8 volts for more than one hour.
4. CHECK HYDROMETER FOR STATE OF CHARGE
Hydrometer indicator State of charge Required action
Green dot Above 65% Load test
Dark dot Below 65% Charge battery
Clear dot Low electrolyteReplace battery.* (If
cranking complaint)
*: Check electrical system before replacement.
B6M0236
3. Ignition Switch
A: REMOVAL AND INSTALLATION
1. IGNITION SWITCH
1) Remove screws, separate upper column cover and
lower column cover.
2) Remove instrument panel lower cover.
B6M0333
3) Disconnect ignition switch connector from body har-
ness.
4) Using a drift and hammer, hit the torn bolt head to
loosen and remove the ignition switch.
B6M0334A
5) When installing, tighten the connecting bolt until its
head twists off.
7
6-2SERVICE PROCEDURE
2. Battery - 3. Ignition Switch

CAUTION:

Observe the items in 1. NORMAL CHARGING
[W2C1].

Never use more than 10 amperes when charging the
battery because that will shorten battery life.
3. JUDGMENT OF BATTERY IN CHARGED
CONDITION
1) Specific gravity of electrolyte is held at a specific value
in a range from 1.250 to 1.290 for more than one hour.
2) Voltage per battery cell is held at a specific value in a
range from 2.5 to 2.8 volts for more than one hour.
4. CHECK HYDROMETER FOR STATE OF CHARGE
Hydrometer indicator State of charge Required action
Green dot Above 65% Load test
Dark dot Below 65% Charge battery
Clear dot Low electrolyteReplace battery.* (If
cranking complaint)
*: Check electrical system before replacement.
B6M0236
3. Ignition Switch
A: REMOVAL AND INSTALLATION
1. IGNITION SWITCH
1) Remove screws, separate upper column cover and
lower column cover.
2) Remove instrument panel lower cover.
B6M0333
3) Disconnect ignition switch connector from body har-
ness.
4) Using a drift and hammer, hit the torn bolt head to
loosen and remove the ignition switch.
B6M0334A
5) When installing, tighten the connecting bolt until its
head twists off.
7
6-2SERVICE PROCEDURE
2. Battery - 3. Ignition Switch

OBD0065

FUNCTION MODE: F00
— ROM ID NUMBER (YEAR) —
CONDITION:
Ignition switch“ON”
SPECIFIED DATA:
Presentation display

Probable cause (Item outside“specified data”)
1. Error 1
Check for loose or disconnected connector, and
discontinued circuit, etc.
2. Error 2Check for poor contact of cartridge, or different type
cartridge.
B2M0270

FUNCTION MODE: F01
— BATTERY VOLTAGE (VB) —
CONDITION:
(1) Ignition switch“ON”
(2) Idling after warm-up
SPECIFIED DATA:
(1) 11±1 V
(2) 13±1 V

Probable cause (Item outside“specified data”)
1. Battery
Check battery voltage and electrolyte’s specific
gravity.
2. Charging system
Check regulating voltage. (On no-load)

Check alternator.
3. Power supply line
Check main relay.

Check harness connector of ECM power supply
line.
37
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

G3M0723

FUNCTION MODE: F00
—MODE DISPLAY—
SPECIFIED DATA:
Data at the left should be indicated.
Probable cause (if outside“specified data”)
1. Communication failure
(No communication method can be confirmed
with power ON.)
(1)Check loose or poor connectors, or
shortcircuit.
(2) Check type of cartridge.
2. Vehicle types cannot be identified (due to
communication failure).Check improper cartridge.
Replace with proper one.
OBD0673

FUNCTION MODE: F01
—BATTERY VOLTAGE (VB)—
CONDITION:
(1) Ignition switch ON
(2) Engine idling after warm-up
SPECIFIED DATA:
(1) 12±1 V
(2) 13±1 V
1. BatteryCheck battery voltage and specific gravity of
electrolyte.
2. Charging system(1)Measure regulating voltage under no loads.
(2) Check generator (as a single unit).
52
2-7ON-BOARD DIAGNOSTICS II SYSTEM
3. Diagnosis System

G3M0723
C: MODE F00—MODE DISPLAY—
SPECIFIED DATA:
Data at the left should be indicated.
Probable cause (if outside“specified data”)
1. Communication failure
(No communication method can be confirmed
with power ON.)
(1)Check loose or poor connectors, or
shortcircuit.
(2) Check type of cartridge.
2. Vehicle types cannot be identified (due to
communication failure).Check improper cartridge.
Replace with proper one.
G3M0724
D: MODE F01—BATTERY VOLTAGE (VB)—
CONDITION:

Ignition switch ON

Engine idling after warm-up
SPECIFIED DATA:
VB: 10—16 V
1. BatteryCheck battery voltage and specific gravity of
electrolyte.
2. Charging system(1)Measure regulating voltage under no loads.
(2) Check generator (as a single unit).
58
3-2AUTOMATIC TRANSMISSION AND DIFFERENTIAL
8. Diagnostic Chart with Select Monitor

1. General Description
1. HOW TO USE THIS MANUAL
The description of the electrical system is divided into the
charging system, starting system, etc.
1) First, open to the necessary electrical system section
and wiring diagram.
2) Next, open the foldout page of the electrical wiring dia-
gram. By observing the electrical wiring harness’ illustra-
tions (front, instrument panel, etc.), the wiring diagram con-
nector can be located.
G6M0192
G6M0193
2. WIRING DIAGRAM
The wiring diagram of each system is illustrated so that you
can understand the path through which the electric current
flows from the battery.
Sketches and codes are used in the diagrams. They should
read as follows:
1) Each connector and its terminal position are indicated
by a sketch of the connector in a disconnected state which
is viewed from the front, as shown in figure.
2
6-3WIRING DIAGRAM
1. General Description