10._PB_Air_Conditioning_Eng

1.

Air Conditioning
Copyright by Hyundai Motor Company. All rights reserved.

2.

Air Conditioning
2
Specification
Items
PB (i20)
Compressor
Swash plate type (10PA17)
Condenser
Integrated receiver drier
Refrigerant (cc)
570±20g
Pressure sensor type
APT
HVAC type
Center mounting type
Cooling fan
Single fan
Cooling fan control
Relay (Low/High)
Fin thermo sensor
Inserted in evaporator
Blower motor
SEMI CTR
Auto 8step (Manual 4steps)
HVAC
AQS sensor not applied
G/BOX
Remarks
CTR MT’G
HVAC
G/BOX
(15ℓ)
In-car
(5ℓ) sensor applied (Motor type), No humidity sensor
FATC
Photo sensor located in the center of crash pad
Water temperature sensor signal is used
Feedback type (position sensor embedded)
TB: SEMI CTR TYPE : G/BOX
capacity
PB: CTR TYPE : G/BOX capacity 15ℓ
Diagnosis
by5~6ℓ
control panel or scanner

3.

Air Conditioning
3
Inputs
Block diagram
Tail lamp, Rheostat (illumination)
Fin thermo sensor
In-car sensor
Ambient temperature sensor
Photo sensor
FATC
Water temperature sensor
control
APT
Vehicle speed
Eng. ECM
Switches
Auto, OFF, A/C, Recirculation,
Fresh, Defroster, Defogger, Mode,
Blower speed
Dial switch (temperature)
Power (B+, IG2) and Ground
module

4.

Air Conditioning
4
Fin thermo sensor
Location & Specification
Temp. (℃)
Voltage (V)
Temp. (℃)
Voltage (V)
40
0.94
2
2.55
30
1.25
0
2.66
20
1.64
-5
2.94
10
2.12
-10
3.22
Sensor
ground
Sensor
power
(5V)

5.

Air Conditioning
5
In-car sensor
Location & Specification
Temp. (℃)
Voltage (V)
Temp. (℃)
Voltage (V)
60
1.00
0
3.83
40
1.74
-20
4.52
20
2.78
-40
4.84
In-car sensor
motor (-)
Sensor
ground
Sensor
power (5V)

6.

Air Conditioning
6
Ambient temperature sensor
Location & Specification
FATC
Ambient
temperature
sensor
Sensor power
(signal)
Trip computer
Sensor power
(signal)
Sensor ground

7.

Air Conditioning
7
Photo sensor
Location & Specification
Sensor
ground
Sensor
power (5V)

8.

Air Conditioning
8
Engine temperature sensor
Location & Specification
FATC
ECT
temperature
sensor
ECM, Cluster

9.

Air Conditioning
9
APT (Automotive pressure transducer)
Location & Specification
A/C Switch
signal (HI)
Blower switch
ON signal
Eng. ECM
A/C
output
APT

10.

Air Conditioning
10
Outputs
Block diagram
FET / Blower motor
Temperature actuator
Mode actuator
FATC
control
module
Intake actuator
Rear defogger
BCM
Rear defogger indicator
Compressor
A/C switch (high)
Blower switch ON
Eng. ECM
Resistor
A/C output
Condenser fan
K-line

11.

Air Conditioning
11
Field Effect Transistor
Location & Specification
Blower
relay
M
D
FET
F/B
G
FET Gate voltage output
FET Drain voltage
feedback
S

12.

Air Conditioning
Temperature actuator
Location & Specification
12
Temp. actuator
(Heating)
Sensor
ground
Sensor
power
(5V)
Sensor
f/back
Temp. actuator
Sensor power
5V
HI (32 C)
4.55V
LO (17 C)
0.45V
Temp.
actuator
Temp. actuator
(Cooling)

13.

Air Conditioning
13
Mode actuator
Location & Specification
Mode actuator
(Defroster)
Sensor
ground
Sensor
power
(5V)
Mode actuator
Sensor power
5V
Vent
0.45V
Bi-level
1.50V
Floor
2.65V
Mix
3.50V
Defroster
4.55V
Mode
actuator
(Vent)
Mode
actuator
Sensor
f/back

14.

Air Conditioning
14
Intake actuator
Location & Specification
A-connector
Recirculation/Fresh
actuator
B-connector
Terminal
Voltage
B-2
Sensor power(5V)
B-11
Sensor feedback
B-6
Sensor ground
A-22
Fresh mode
A-23
Recirculation mode

15.

Air Conditioning
15
Owner’s setting procedure
Defroster logic control
Cannot be changed !
Temperature unit conversion
OFF button + AUTO button (3sec)

16.

Air Conditioning
16
Diagnosis on the control panel
Procedure
IGN S/W: OFF ON
Keep pressing OFF switch and press Mode
switch 4 times within 2sec.
Self-diagnosis
(Continuous check)
Press AUTO
Press AUTO
Proceed to next
step by A/C switch
Press OFF
Self-diagnosis
(Step by step)
Press OFF
FULL AUTO control

17.

Air Conditioning
17
PTC (Positive Temperature Coefficient) Heater
PTC relay 3
PTC relay 2
PTC relay 1
PTC heater
Location of PTC relay 1, 2 and 3

18.

Air Conditioning
18
PTC (Positive Temperature Coefficient) Heater
Condition satisfied
Relay control
PTC
relay 1
PTC
relay 2
Engine
ECM
Heater
Blower motor controller
control
Relay Control
PTC
relay 3