2012 SSANGYONG KORANDO relay

15-18
6) Cooling Fan Control
(1) 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 transaxle is also cooled down through the radiator by
circulating the oil through the oil pump. There are two cooling fans (180W+120W) in G20DF engine. ECU
controls the electric cooling fans with three cooling fan relays to improve the engine torque and air
conditioning performance.
(2) Components
Refrigerant pressure
sensorCoolant temperature
sensorG20DF Engine
ECURelay box in engine
compartment
A/C compressorCooling fan moduleT-MAP sensor

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(4) 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
switchCooling
fanCoolant temperatureRefrigerant
pressureA/C
compressor
OFFOFFCoolant temp.<90℃-
LO90℃≤Coolant temp.<105℃-
HI105℃≤Coolant temp.-
ONLO
Coolant temp.<105℃Refrigerant
pressure<18 bar
ON
HI18 bar≤Refrigerant
pressure
HI105℃≤Coolant temp.<115℃-
HI115℃≤Coolant temp.- OFF (cut)
A/C compressor OFF conditions ▶
Coolant temperature: over 118℃
Approx. 4 seconds after starting the engine
When abrupt acceleration
Refrigerant pressure:
* OFF below 2.0 kg/㎠, then ON over 2.4 kg/㎠
* OFF over 32 kg/㎠, then ON below 26.0 kg/㎠ -
-
-
-
Output voltage according to refrigerant pressure ▶
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".
Cooling fan control by ATF temperature ▶
ATF temperature Cooling fan speed Remark
Over 110˚CHI -

15-24
(2) Wiring Connection of CAN Communication
Splice pack Wiring Location
S101 Floor wiring (LH)Under fuse & relay box in engine
compartment
S102 Floor wiring (RH) Inside of right fender
S201 Main wiringBehind instrument cluster (cowl cross
member)
S202 Main wiringBehind instrument cluster (cowl cross
member)
S205 Floor wiring (LH)Under driver’s door scuff

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2) CAN Communication Wiring Diagram
Splice pack Wiring Location
S101 Floor wiring (LH) Under fuse and relay box in engine compartment
S102 Floor wiring (RH) Inside of right fender
S201 Main wiring Behind the instrument cluster (cowl cross member)
S202 Main wiring Behind the instrument cluster (cowl cross member)
S205 Floor wiring (LH) Bottom of driver seat (front right)

02-38410-00
1. CAUTIONS WHEN WORKING ON ELECTRICAL UNITS
Disconnect the negative cable from the battery
in advance when working on electrical units. -
If a fuse is blown, replace it with a fuse which
has the correct amperage rating. If you use a
fuse with higher capacity than the
specification, the component can be
damaged or catch fire. -Do not drop or appy excessive impact to
sensors and relays. -
80℃
10 A 15 A
Make sure to turn "OFF" the ignition switch
and other lamp switches before disconnecting
or connecting the negative battery cable.
(Otherwise, semiconductor parts can be
damaged.)

02-6
ICM box
Interior fuse box
Fuse box in engine compartment
The fuse and relay boxes consist of three boxes: Integrated Control Module (ICM) box in which the
relays of rear wiper, rear fog lamp, mirror folding, ACC, IGN1 & 2, horn, tailgate, power outlet, shift lock
(A/T) are integrated, relay & fuse box in engine compartment and interior fuse box.
2. SYSTEM LAYOUT1. OVERVIEW

02-78410-00
3. OPERATING PROCESS
1) Fuse Box In Engine Compartment
The relay & fuse box in engine compartment is located in the left side of the engine compartment. The
wiper relay, horn relay, fog lamp relay, tail lamp relay and PTC relay are included in the PCB. The B+
supply is provided through the ALT+ (A) line, not by an extra fuse.
Capacity and name of engine compartment fuse and relay ▶

02-8
Engine compartment fuse and relay box I (SB1~SB6, SB10, Ef18~Ef19, START RELAY,
BLOWER RELAY, DEFOGGER RELAY, DEICER RELAY) ▶