Mitsubishi Lancer (4A9 engine). Manual — part 87
54A-10
THE SECURITY-ALARM SYSTEM IS TRIGGERED.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THE HAZARD WARNING LAMPS DO NOT FLASH
WHILE THE SECURITY-ALARM SYSTEM IS
TRIGGERED. . . . . . . . . . . . . . . . . . . . . . . .
THE HORNS DO NOT SOUND WHEN THE
SECURITY-ALARM SYSTEM IS TRIGGERED.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THE ACTIVATED SECURITY ALARM SIREN
SOUNDS EVEN THOUGH NO FAULTY OPERATION
IS MADE. . . . . . . . . . . . . . . . . . . . . . . . . . .
SECURITY ALARM SIREN DOES NOT SOUND.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE . . . . . . . . . . . . . . .
ADJUSTMENT FUNCTION . . . . . . . . . . . . .
LIN CUTOFF CONTROL UNIT REMOVAL AND
INSTALLATION . . . . . . . . . . . . . . . . . . . . . .
SECURITY ALARM SENSOR REMOVAL AND
INSTALLATION . . . . . . . . . . . . . . . . . . . . . .
SECURITY ALARM SIREN REMOVAL AND
INSTALLATION . . . . . . . . . . . . . . . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
LIN CUTOFF CONTROL UNIT INSPECTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BATTERY
CHASSIS ELECTRICAL
54A-11
BATTERY
SERVICE SPECIFICATIONS
M1541000300919
ON-VEHICLE SERVICE
FLUID LEVEL AND SPECIFIC GRAVITY
CHECK
M1541000900427
CAUTION
• If the battery is used with the electrolyte level
below the LOWER LEVEL indicator, there is
the danger that explosions may occur, so add
water to the battery until the electrolyte level
is between the LOWER LEVEL and UPPER
LEVEL indications.
• If too much water is added to make the level
rise above the UPPER LEVEL indication, the
electrolyte may leak out, so adjust so that the
electrolyte level is between the LOWER
LEVEL and UPPER LEVEL indications.
1. Check that the battery electrolyte level is between
the UPPER LEVEL and LOWER LEVEL
indications.
2. Use a specific gravity meter and a thermometer to
measure the specific gravity.
Standard value: 1.220
− 1.290 (electrolyte
temperature 20
°C)
Item
Standard value
Battery electrolyte specific gravity
1.220
− 1.290 (electrolyte temperature 20°C)
Battery current sensor resistance
Current sensor resistance value
between terminal No.1
−
3: 3
− 10 kΩ
between terminal No.1
−
4: less than 0.5 k
Ω
between terminal No.3
−
4: 3
− 10 kΩ
Temperature sensor resistance
value
4.5
− 7.2 kΩ (when 0 °C)
1.6
− 2.5 kΩ (when 25 °C)
0.96
− 1.40 kΩ (when 40
°C)
AC102027
OK
AB
Thermometer
Specific
gravity meter
BATTERY
CHASSIS ELECTRICAL
54A-12
The specific gravity of the battery electrolyte
changes according to the temperature, so the spe-
cific gravity when the electrolyte is at a temperature
of 20
°C can be calculated using the following for-
mula. Use the converted value to judge whether the
electrolyte is okay or not.
D
20
= (t
− 20) × 0.0007 + Dt
D
20
: Specific gravity converted to a value for
electrolyte temperature of 20
°C
t: Electrolyte temperature at the time of
measurement
Dt: Actual specific gravity
CHARGING
M1541001102130
CAUTION
• The battery plugs should be removed during
charging.
• The battery electrolyte level may rise and
overflow from the battery during charging.
• Explosions may occur if the battery is
brought close to naked flames during charg-
ing.
• Be careful to avoid tasks that might produce
sparks or other danger while the battery is
charging.
• After charging is complete, reinstall the bat-
tery plugs, pour water over the battery to
rinse away any sulphuric acid, and let the bat-
tery stand to dry.
• Charge the battery in a well-ventilated loca-
tion.
• Do not let the battery electrolyte temperature
rise above approximately 45
°C (approximately
55
°C during rapid charging).
Remove the battery from the vehicle.
1. The normal charging current is a value in
amperes which is 1/10th of the battery capacity. If
the battery needs to be charged rapidly because
of reasons such as time limitations, the maximum
charging current for rapid charging is the battery
capacity expressed as an ampere value.
Determine when charging is finished.
When the specific gravity of the battery electrolyte is
constantly within 1.220
− 1.290 for a continuous
period of one hour or more.
BATTERY TEST
M1541001202256
TEST STEPS
STEP 1. Battery no-load voltage check
(1) Illuminate the headlamp for 15 seconds.
(2) Turn off the headlamp and then leave it for about
2 minutes to stabilise the battery voltage.
(3) Remove the battery cable.
(4) Measure the battery no-load voltage.
OK: 12.4 V or more (Specific gravity
1.240)
Q: Does the measured voltage correspond with this
range?
YES :
Go to Step 3.
NO :
Go to Step 2.
STEP 2. Battery charging
Recharge the battery at 5A (constant-current charg-
ing). (Refer to Table 1.)
Q: Is the battery no-load voltage normal value (12.4 V
or more)?
YES :
Go to Step 3.
NO :
Replace the battery.
STEP 3. Load test check
(1) Connect the battery tester to battery.
(2) Feed a load current through the battery. (Refer to
Table 1).
(3) Measure the battery voltage after 15 seconds and
then eliminate a load current.
(4) Compare the measured voltage to the specified
lowest voltage. (Refer to Table 2).
Q: Is the measured voltage higher than the lowest
voltage?
YES :
The battery is normal.
NO :
Replace the battery.
Battery
type
Capacity (5-
hour rate)
Normal
charging
current
Rapid
charging
current
75D23L
53 Ah
5.3 A
53 A
55D23L
50 Ah
5.0 A
50 A
Q-85
55 Ah
5.5 A
55 A
T-105
73 Ah
7.3 A
73 A
BATTERY
CHASSIS ELECTRICAL
54A-13
(TABLE 1)
(TABLE 2)
Battery type
Charging time when fully discharged
[5A constant current charging] (H)
Load current (A)
55D23L
12
200
75D23L
13
270
Q-85
14
310
T-105
18
410
Outside air
temperature (
°C)
21 or
more
16 to 20
10 to 15
4 to 9
−1 to 3
−7 to −2
−12 to −8
−18 to −13
Minimum voltage
(V)
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
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