Page 485 of 1082

15-20
(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 -
Page 504 of 1082
02-50000-00
T-MAP sensor
TurbochargerCDPF
1. MAJOR COMPONENTS (D20DTF(Low CO2))
ECU
Intercooler assemblyAir cleaner assembly
Page 507 of 1082

02-8
Swirl control valve
It operates variably in accordance with the
engine load and rpm.
Refer to Chapter “Engine Control”.
Intake manifold
It is the passage for intake air when the swirl
vale is operating. The T-MAP sensor for
measuring the pressure and temperature of
pressurized air in turbocharger is installed on
the left top of intake manifold.
3. LAYOUT OF INTAKE SYSTEM
1) Overview
The intake system for D20DTF(Low CO2) engine is equipped with a throttle body which includes a flap.
This flap is controlled by an electrical signal to cut off the intake air entering to the engine when the
ignition switch is turned off. The intake manifold contains the swirl control valve and dual port system to
make the optimum turbulence. The T-MAP sensor is located on the left top of the intake manifold and
the HFM sensor for precise control is located at the rear side of air cleaner. To reduce the intake noise
and to improve the intake efficiency, the volume of air cleaner has been increased.
2) Components
Electric throttle body
Refer to Chapter “Engine Control”.
Page 508 of 1082
02-90000-00
HFM (Hot Film Air-Mass Sensor)
HFM sensor, version 6
Refer to Chapter “Engine Control”.
Air cleaner assembly
Its volume is increased and air flowing
efficiency is improved.Intercooler assembly
Its volume is increased and cooling efficiency is
improved.
Page 509 of 1082
14-30000-00
1. SPECIFICATIONS
Alternator Rated output140A (25℃, 6500rpm)
76A/1800rpm, 140A/6500rpm, 25℃, 13.5V
Battery Capacity 90Ah(20hr)
Reserve capacity 180 minutes
Starting current (when
engine cooed)710A
Weight 23kg
EBS
(Electronic Battery
Sensor)Resolving power 1mA
Operating voltage 7~18V
Operating temperature-40~105℃
Communication LIN 2.0
Unit Description Specification
Page 522 of 1082
14-16
1. LAYOUT
D20DTF(Low CO2) D20DTF
ECUBattery sensor (EBS)
Alternator (ALT)
Meter cluster (charge
warning lamp)
Page 541 of 1082
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.)
Page 570 of 1082
03-4
2. FUNCTIONS
1) Functional List
FunctionSKM
without
BCMSKM
with
BCM
1 Wiper control Wiper mist & washer coupled wiper O O
Auto washer coupled wiper O O
Auto light-rain sensor coupled wiper (LIN) O O
Speed sensitive intermittent wiper O O
Wiper low/high control O O
2 Key reminder warning Key reminder warning O X
Ignition key reminder O X
External buzzer control X O
Anti-lock function when opening door O O
3 Tail lamp control Tail lamp ON warning O O
External lamp warning display X O
Tail lamp auto OFF O O
4 Door ajar warning Door status management X O
Door ajar warning O O
5 Seat belt control Seat belt warning O O
Seat belt reminder O O
6 Sunroof warning Sunroof warning control O O
Sunroof warning display X O
7 Room lamp control Door coupled room lamp and dimming control O O
Room lamp OFF control O O
Room lamp control display X O
8 Key hole illumination
controlKey hole illumination O X
9 Defogger (heated wire)
controlFront defogger timer O O
Rear defogger timer
OO