2012 SSANGYONG NEW REXTON cooling

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
-
LO
-
HI
-
ONLO
Refrigerant pressure <
18 bar
ON
HI
pressure
HI
-
HI
-
OFF (cut)
A/C compressor OFF conditions
Approx. 4 seconds after starting the engine
Engine rpm: below 650 rpm or over 4500 rpm
When abrupt acceleration
Refrigerant pressure:
-
-
-
-
-
The output voltage from refrigerant pressure sensor is 1.7 V to 3.5 V when the refrigerant pressure is 10
Output voltage according to refrigerant pressure
Cooling fan controls according to ATF
ATF temperature Fan condition Remark
High speed -

5) Cooling System

1792-01
1. COMPONENTS
The components of the exhaust system for the D27DTP (POWER UP) engine have been changed
as follows:
1. E-EGR valve: Controlling the EGR valve electrically and sends the valve location signal to
ECU (vacuum modulator control has been deleted)
2. EGR cooler: Decreasing EGR gas (NOx) efficiently by cooling the EGR gas and let it flow to
the intake pipe
3. VGT turbocharger: Increase in capacity and performance compared to D27DTP & D20DT
engine
The EGR system has been changed to control NOx more efficiently and the VGT turbo charger
has been changed to increase the engine power. For more details, refer to the next description.
The exhaust system for D27DTP (POWER UP) engine is as follows:

1520-01
1. COMPARISON IN COOLING SYSTEM FOR EACH ENGINE
For the D27DTP (POWER UP) engine, the cooling system is equipped with E-EGR cooler and the
water pump which its capacity is improved according to the additional coolant line in the cylinder
block. For the D27DT engine, the cooling system uses the fan clutch.
Cooling System for D27DTP (POWER UP) Engine