2013 SSANGYONG NEW ACTYON SPORTS Service Manual

06-92110-01
3. PWM (PULSE WIDTH MODULATION) ELECTRIC FAN
OPERATION
1) Function
The PWM (Pulse Width Modulation) high capacity electric fan is installed instead of electric condenser
fan to enhance the durability and controllability and reduce noise.
2) Mounting Location
PWM
Fan shroud
Electric fan PWM unit

06-10
3) PWM Electric Fan
(1) Advantages and Disadvantages of the PWM Electric Fan
Advantages ▶
Enhanced A/C performance: at low speed, at
idling, driving in city
Reduction of vibration/noise: fan activated by
PWM only when necessary
Reduction of engine consuming power
(V/Fan driving force) by 4 Hp - Cost saving -
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Disadvantage ▶
Poor engine cooling perfomance at low and
high rpm -
4) PWM (Pulse Width Modulation) Unit
It controls the time of the output voltage to control
the fan motor speed independently.
Internal functions ▶
Motor power shutting-off function when
overcurrent is applied
Adverse voltage prevention function
Detection function for the motor lock
Temperature detecting function: The electric
fan operates at FULL speed to cool down
the PWM unit when the interior temperature
of PWM unit is over 120~150°C.
Communication function when failing: The
fail signal is transmitted to the ECU when the
PWM unit is malfunctioning.
Soft start function: The motor speed is
gradually increased when the motor is
initially operated. -
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5) Shutting-off Condition of the A/C Compressor
Coolant temperature ▶
When coolant temperature is below 20°C or over 115°C, engine speed is below 650 rpm or
over 4500 rpm for 4 seconds after engine starting, abrupt acceleration and A/C refrigerant
pressure sensor detecting the followings
A/C compressor is turned off when the refrigerant pressure is below 2.0 kg/cm2 and then is
turned on when the refrigerant pressure is over 2.4 kg/cm2.
A/C compressor is turned off when the refrigerant pressure is over 30 kg/cm2 and then is turned
on when the refrigerant pressure is below 21.4 kg/cm2. -
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1. DIAGNOSTIC INFORMATION AND PROCEDURE
1) Ignition System

07-4
2) Ignition System (Cont'd)

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1. DESCRIPTION AND OPERATION
1) Battey
The sealed battery is standard on all cars. There are no vent plugs in the cover.
The battery is completely sealed, except for two small vent holes in the sides.
These vent holes allow the small amount of gas produced in the battery to escape.
The battery has the following advantages over conventional batteries:
No water addition for the life of the battery.
Overcharge protection. If too much voltage is applied to the battery, it will not accept as much current
as a conventional battery.
In a conventional battery, the excess voltage will still try to charge the battery, leading
to gassing, which causes liquid loss.
Not as liable to self-discharge as a conventional battery. This is particularly important when a battery
is left standing for long periods of time.
More power available in a lighter, smaller case. ·
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The battery has three major functions in the electrical system.
First, the battery provides a source of energy for cranking the engine.
Second, the battery acts as a voltage stabilizer for the electrical system. Finally, the battery
can, for a limited time, provide energy when the electrical demand exceeds the output of the generator.
2) Ratings
<0068004700890088009b009b008c009900a00047008f0088009a0047009b009e0096004700990088009b00900095008e009a00610047004f005800500047008800470099008c009a008c0099009d008c0047008a008800970088008a0090009b00a0004700
990088009b00900095008e0047008b008c009a0090008e0095>ated at 27°C(80°F), which is the
time a fully charged battery will provide 25 amperes of current flow at or above 10.5 volts (2) a cold
cranking am
p rating determined under testing at -18°C(0°F), which indicates the cranking load
capacity. ▶
(1)Reserve Capacity
The reserve capacity (RC) is the maximum length of time it is possible to travel at night with the minimum
electrical load and no generator output. Expressed in minutes, the RC rating is the time required for a
fully charged battery, at a temperature of 27°C(80°F) and being discharged at a current of 25
amperes, to reach a terminal voltage of 10.5 volts.

07-6
(2) Cold Cranking Amperage
The cold cranking amperage test is expressed at a battery temperature of -18°C(0°F).
The current rating is the minimum amperage, which must be maintained by the battery for 30 seconds at
the specified temperature, while meeting a minimum voltage requirement of 7.2 volts.
This rating is a measure of cold cranking capacity.
The battery is not designed to last indefinitely. However, with proper care, the battery will provide many
years of service. If the battery tests well, but fails to perform satisfactorily in service for no apparent
reason, the following factors may point to the cause of the trouble:
Vehicle accessories are left on overnight.
Slow average driving speeds are used for short periods.
The vehicle's electrical load is more than the generator output, particularly with the addition o
f
aftermarket equipment.
Defects in the charging system, such as electrical shorts, a slipping generator belt, a faulty generator,
or a faulty voltage regulator.
Battery abuse, including failure to keep the battery cable terminals clean and tight or a loose battery
hold-down clamp.
Mechanical problems in the electrical system, such as shorted or pinched wires. ·
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3) Charging Time Required
The time required to charge a battery will vary depending upon the following factors:
Size of Battery - A Completely discharged large heavy-duty battery required more than twice the
recharging time as a completely discharged small passenger car battery. ▶
<007b008c00940097008c00990088009b009c0099008c00470054004700680047009300960095008e008c00990047009b00900094008c0047009e00900093009300470089008c00470095008c008c008b008c008b0047009b00960047008a008f0088009900
8e008c00470088009500a0004700890088009b009b008c0099>y at -18°C(0°F) than at
27°C(80°F).
When a fast charger is connected to a cold battery, the current accepted by the battery will be very
low at first.
The battery will accept a higher current rate as the battery warms. ▶
Charger Capacity - A charger which can supply only 5 amperes will require a much longer charging
period than a charger that can supply 30 amperes or more. ▶
State-of-Charge - A completely discharged battery requires more than twice as much charge as a
onehalf charged battery.
Because the electrolyte is nearly pure water and a poor conductor in a completely discharged
battery, the current accepted by the battery is very low at first. Later, as the charging current causes
the electrolyte acid content to increase, the charging current will likewise increase. ▶

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4) Charging a Completely Discharged Battery (Off the Vehicle)
Unless this procedure is properly followed, a perfectly good battery may be needlessly replaced.
The following procedure should be used to recharge a completely discharged battery:
Measure the voltage at the battery terminals with an accurate voltmeter.
If the reading is below 10 volts, the charge current will be very low, and it could take some
time before the battery accepts the current in excess of a few milliamperes.
Refer to "Charging Time Required" in this section, which focuses on the factors affecting both the
charging time required. Such low current may not be detectable on ammeters available in the field.
Set the battery charger on the high setting. 1.
2.
Continue to charge the battery until the charge current is measurable. Battery chargers vary in the
amount of voltage and current provided. The time required for the battery to accept a measurable
charger current at various voltages may be as follows: 3.
If the charge current is not measurable at the end of the above charging times, the battery
should be replaced.
If the charge current is measurable during the charging time, the battery is good, and charging
should be completed in the normal manner. ·
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If the charge current is still not measurable after using the charging time calculated by the above
method, the battery should be replaced. ·
It is important to remember that a completely discharged battery must be recharged for a sufficient
number of ampere hours (AH) to restore the battery to a usable state.