relay SSANGYONG NEW ACTYON SPORTS 2012 Owner's Manual

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HFM (intake air
temperature)Cooling fan module
DSI 6 A/T (ATF
temperature)Coolant
temperature senso
r
Refrigerant
pressure sensor
Relay box
(12) Cooling fan control
A. Overview of cooling fan and A/C compressor
The cooling system maintains the engine temperature at an efficient level during all engine
operating conditions. The water pump draws the coolant from the radiator. The coolant then
circulates through water jackets in the engine block, the intake manifold, and the cylinder head.
When the coolant reaches the operating temperature of the thermostat, the thermostat opens.
The coolant then goes back to the radiator where it cools. The heat from automatic transmission
is also cooled down through the radiator by circulating the oil through the oil pump. ECU controls
the electric cooling fans with three cooling fan relays to improve the engine torque and air
conditioning performance.
For detailed information, refer to Chapter "Air Conditioning System".
B. Components
A/C compressor
D20DTR ECU

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D. Cooling fan and A/C compressor control
Conditions for cooling fan ▶
The cooling fan module controls the cooling fan relay, high speed relay and low speed relay. The
cooling fan is controlled by the series and parallel circuits.
A/C switch Cooling fanCoolant temperature Refrigerant pressure
A/C compressor
OFF OFF Coolant temp. < 90℃ -
LO 90℃ ≤ Coolant temp.
< 105℃-
HI 105℃ ≤ Coolant temp. -
ONLO
Coolant temp. < 105℃Refrigerant pressure <
18 bar
ON
HI 18 bar ≤ Refrigerant
pressure
HI 105℃ ≤ Coolant tem
p.
< 115℃-
HI115℃ ≤ Coolant temp. -
OFF (cut)
A/C compressor OFF conditions ▶
Coolant temperature: below -20℃ or over
115℃
Approx. 4 seconds after starting the engine
Engine rpm: below 650 rpm or over 4500 rpm
When abrupt acceleration
Refrigerant pressure:
* OFF below 2.0 kg/㎠, then ON over 2.4 kg/㎠
* OFF over 30 kg/㎠, then ON below 21.4 kg/㎠ -
-
-
-
-
The output voltage from refrigerant pressure sensor is 1.7 V to 3.5 V when the refrigerant pressure
is 10 to 24 kgf/㎠ with A/C "ON".Output voltage according to refrigerant pressure ▶
Cooling fan controls according to ATF ▶
ATF temperature Fan condition Remark
Over 110˚CHigh speed -

15-40
Relay box in engine compartment
(13) High speed
A. Overview
The supplementary electrical heater is installed in DI engine equipped vehicle as a basic
equipment. The PTC system is operated according to two temperature values measured at the
coolant temperature sensor and HFM sensor. This device is mounted in the heater air outlet and
increase the temperature of air to the passenger compartment. Because PTC system is heated by
electrical power, high capacity alternator is required. PTC does not operate during engine
cranking, while the battery voltage is lower than 11 V or during preheating process of glow plugs.
B. Components
HFM (intake air
temperature)
Coolant temperature
sensorPTC heater
PTC 2 relay (PTC
heater 2, 3)
PTC heater
3 (40A)
PTC heater
2 (40A)
PTC heater
1 (40A)
D20DTR ECU
PTC 1 relay
(PTC heater 1)

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C. Operation process
The ceramic PTC has a feature that the resistance goes up very high at a certain temperature.
There are three circuits in PTC heater. Only one circuit is connected when PTC1 relay is ON, and
two circuits are connected when PTC2 relay is ON.
<00760097008c00990088009b0090009600950047009700990096008a008c009a009a006100470099008c0088008a008f008c009a00470088009b004700880047008a008c0099009b0088009000950047009b008c00940097008c00990088009b009c009900
8c02e7008f0090008e008f00470099008c009a0090009a009b>ance→low current→less heat
<00990088008b00900088009b00900096009502e7009b008c00940097008c00990088009b009c0099008c0047008b0096009e009502e7008f0090008e008f00470099008c009a0090009a009b00880095008a008c02e7008f0090008e008f0047008a009c00
990099008c0095009b02e7009b008c00940097008c00990088>ture up

04-8
The cooling fans are mounted behind the radiator in the engine compartment. The electric cooling
fans increase the flow of air across the radiator fins and across the condenser on air conditioned
(A/C)-equipped vehicles.
This helps to speed cooling when the vehicle is at idle or moving at low speeds.
All models have two fans. The main fan is 320 mm (12. 6 inches) in diameter with seven blades to
aid the airflow through the radiator and the condenser. An electric motor attached to the radiator
support drives the fan.
The auxiliary fan is 320 mm (12.6 inches) in diameter.
A/C Off or Non-AC Model ▶
The cooling fans are actuated by the engine control module (ECM) using a low-speed
cooling fan relay, a high-speed cooling fan relay and a cooling fan motor relay.
The ECM will turn the cooling fans on at low speed when the coolant temperature reaches
95°C(203°F) and at high speed when the coolant temperature reaches 105°C(221°F).
The ECM will change the cooling fans from high peed to low speed at 100°C(212°F) and
will turn the cooling fans off at 90°C (194°F). -
-
-
A/C On ▶
The ECM will turn the cooling fans on at low speed when the A/C system is on. The ECM
will change to high speed when the high side A/C pressure reaches 1860 kPa (269.8 psi).
The cooling fans will return to low speed when the high side A/C pressure reaches 1378
kPa (199.8 psi). -
-
7) Engine Coolant Temperature Sensor
The Engine Coolant Temperature (ECT) sensor uses a temperature to control the signal voltage to
the Engine Control Module (ECM).
8) Coolant Temperature Gauge
The coolant temperature gauge controls the instrument panel temperature indicator. The coolant
temperature gauge is located with ECT sensor.

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ICM
Interior Fuse & Relay
Box (RH)
2. MOUNTING LOCATION
In engine compartment ▶
In vehicle ▶
Fuse & Relay Box In Engine
Compartment
1. OVERVIEW
The ICM (Integrated Control Module) mounted to the back of the STICS is integrated with the door
lock/unlock relay, windshield de-icer relay and turn signal lamp relay. There are four fuse & relay
units.
Interior Fuse & Relay
Box (LH)Mounting Location of ICM

01-4
3. CAPACITY AND NAME OF FUSE AND RELAY IN ENGINE
COMPARTMENT
The label attached on each fuse
box indicates only major fuses and
relays. Therefore, there are more
fuses and relays than indicated.
For details about the connection
of fuses and relays, refer to the
power distribution circuit diagram
on the following pages. *

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4. CAPACITY AND NAME OF INTERIOR FUSE AND RELAY
1) Interior Fuse and Relay Box on Driver Side

01-6
2) Interior Fuse and Relay Box on Passenger Side

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5. OPERATING PROCESS OF ICM BOX
The following relays are integrated into the ICM (Integrated Control Module) box.
Door lock/unlock relay
Windshield de-icer relay
Turn signal lamp relay -
-
-
1) Overview
2) Mounting Location
Door lock/
unlock relay
Turn signal lamp relay
Windshield
de-icer relay
Inner view of ICM PCB
PAS buzzer
Chime
ICM box
STICS
The relays in the ICM box cannot be replaced respectively; so if the any of the
components on the PCB are defective, they should be replaced as an assembly.