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TUCSON AIR CONDITIONER

Air conditioning System Contents INTRODUCTION ·················································

3

SPECIFICATION ·················································

5

- INTAKE DOOR ACTUATOR ······························ 19

PARTS LOCATION ·············································

6

- TEMP. DOOR ACTUATOR································· 20

INSTALL LAYOUT ·····················································

6

- MODE DOOR ACTUATOR ································ 21

REFRIGERANT CIRCUIT ··········································

7

PARTS IN ENGINE ROOM

ACTUATORS

SENSORS - FIN THERMO SENSOR ···································· 22

- CONDENSER ·························································

7

- INCAR SENSOR ·············································· 23

- COMPRESSOR ······················································

8

- PHOTO SENSOR··············································· 24

- RECEIVER & DRIER ··············································

9

- AMBIENT SENSOR ·········································· 25

- TRIPLE SWITCH ···················································· 10

- AQS ··································································· 26

PARTS IN CABIN

- HUMIDITY SENSOR ·········································· 27

- HEATER UNIT ························································ 13

TEMPERATURE UNIT CHANGE ····················· 27

- EVAPORATOR UNIT············································· 14

CONTROL LOGIC ············································ 28

- EXPANSION VALVE ···································· 15

SELF DIAGNOSIS

- AIR FILTER ···························································· 15

- DTC LIST & FAILSAFE ·································· 32

- BLOWER MOTOR ················································· 16

PTC HEATER ······················································· 33

- POWER TR····························································· 16 - HIGH SPEED BLOWER RELAY ···························· 18

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TUCSON AIR CONDITIONER

MEMO

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INTRODUCTION Warning: Failure to follow procedures, or failure to adhere to warnings, cautions, and notices could result in personal injury and/or unnecessary vehicle damage/repairs. Cautions: 1. Before servicing any electrical components, disconnect the negative battery cable. Unless instructed otherwise, the ignition switch must also be in the “off” or “lock” position. 2. This air conditioner system contains R-134a, which requires special handling to avoid personal injury. Always follow the special handling instructions listed below: a) Always wear eye protection and wrap a clean cloth around fittings, valves and connections when servicing the refrigerant system. b) Always work in a well-ventilated area and avoid breathing refrigerant fumes. c) Do not weld or steam clean on or meat any air conditioner lines or components. d) Do not allow refrigerant to come in direct contact with your skin. If R-134a cones into contact with any part of the body, flush the exposed area with water and immediately seek medical attention. e) When using R-134a cylinders, reinstall the heavy metal screw cap after each use. f)

Do not carry refrigerant containers in the passenger compartment of a vehicle when transporting R-134a

g) When filling a small R-134a cylinder from a large one, never fill the cylinder completely. Always allow space above the liquid for expansion. 3. Prior to disconnecting, removing, or replacing any air conditioner lines or components, all refrigerant must be completely recovered using approved refrigerant recovery equipment. 4. R-12 is not compatible with R-134a. Using R-12 in this air conditioner system may cause system failure. 5. Do not remove caps from fitting until each component is ready for connection. 6. Do not release refrigerant into the atmosphere. Use your refrigerant recycling equipment whenever you need to discharge the air conditioner system. 7. Keep refrigerant container temperature below 40°C (104°F). 8. Do not expose refrigerant or refrigerant containers to fire or flames

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Notices: 1. Reinstall fasteners in the same location from which they were removed. 2. Always use the correct part number fastener. 3. Always tighten fasteners and fittings to the correct torque value. Insufficient or excessive tightening can result in leakage or damage to the air conditioner system. 4. Any time the air conditioner system has been opened to the atmosphere, it should be properly evacuated before recharging with R-134a. 5. All parts should be at room temperature before uncapping to prevent condensation of moisture inside the components. 6. O-rings and seals must be in perfect condition. A burr, or dirt, on a sealing surface may cause a refrigerant leak. 7. When tightening O-ring fittings, the opposing fitting should be backed up with a wrench to prevent distortion of the seal and allow for proper tightening. 8. Remember to reinstall the service valve caps after charging the air conditioner system. 9. Flexible hose lines should not be bent to a radius of more than four times the diameter of the hose. 10. Flexible hose lines should not be allowed to come within a distance of 2.5inches(64mm) of the exhaust manifold. 11. Keep all tools and parts clean and dry. 12. Use protective covers to avoid damage to the body of the vehicle. 13. When installing air conditioner lines or electrical harness, route them properly to avoid contact with moving parts.

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DESCRIPTION The A/C-Heater system combines heating, cooling, ventilation, dehumidifying. The heating system can be made simply as is utilized the heat generated by the engine. In the other hand the cooling system requires more complicated equipment to create cool air. When air is cooled, the moisture in the air condenses and forms water droplets that separate from the air. The airflow is controlled by manual type and automatic type. Full Automatic Temperature Control (FATC) features completely automatic control of discharge air temperature. FATC also controls the circulation and humidity of the air inside the vehicle. With FATC, the driver selects the temperature and the FATC functions to maintain that temperature, regardless of outside temperature changes. A FATC control module controls air conditioning, ventilating, heating, and defrosting systems. These electronic control systems automatically adjust doors, blower speeds, and compressor cycling.

SPECIFICATION Specification Parts

JM (TUCSON)

SM (SANTA FE) 2.0

Compressor

2.7, DSL 2.0

Type

HS-18

10PA-15C

10PA-17C

Oil

FD46 XG 150g

ND OIL8 120cc

ND OIL8 200cc

Capacity

170cc/rev

155cc/rev

177cc/rev

-

-

Thermal fuse Refrigerant and quantity Triple switch (Kg/§ G)

184

Off

R-134a, 510g

R-134a, 600g

H/P

ON : 26.0 ± 0.2

M/P

ON : 18.0

L/P

ON : 2.3 ± 0.25

OFF : 32.0

2.0

0.8 OFF : 14.0 ± 1.2 OFF : 2.0 ± 0.2

H/P: High Pressure, M/P: Middle Pressure, L/P: Low Pressure

Parts

M anual

A utom atic

C ontroller type

R otary

Push button

Evaporator Tem p. control

D uct-sensor

A /C

O N /O FF

O FF:0.5

, O N :2.5

B low er speed control

R eistor

M ode control

A ctuator

Tem p. select control

A ctuator

5

Pow er TR & H igh speed relay

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PARTS LOCATIONS C A

A : A/C Relay

B

D E I K H

B : AQS Sensor C : AMB. Sensor D : Photo Sensor G J ,F

E : FIN Thermo Sensor F : In-car Sensor G : FATC Controller H : High Blower Relay I : Power TR J : Humidity Sensor K: Blower Relay

INSTALL LAYOUT 1

3

NO

Parts Name

1

Heater Complete Assembly

2

Seal Assembly-Evaporator Pipe

3

Hose Assembly-Suc/Dis

4

Condenser

5

Compressor

6

Fan Motor Assembly-Cond.

2 6 5

4

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REFRIGERANT CIRCUIT Heat absorbed

Evaporator Blower Motor Expansion Valve

Compressor Condenser

Receiver Drier

Heat removed

PARTS IN ENGINE ROOM CONDENSER The condenser in the air conditioning system is a device used to change high-pressure refrigerant vapor to a liquid. It does this by providing a means for emitting heat from the hot refrigerant to the cooler atmosphere. Parallel Flow type condenser improved the refrigerating efficiency and minimized than the Corrugated Type.

R-134a, parallel flow type

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COMPRESSOR (SWASH PLATE TYPE) The compressor is the power unit of the A/C system. It pumps out refrigerant vapor under high-pressure and high heat on the discharge side (high side of system) and sucks in low-pressure vapor on the intake side (low side). NO 2 3

Hub. M/Clutch W asher

4

Snap Ring

5

Rotor. M/Clutch

6

Snap Ring

7 8

Stator. M/Clutch Screw

9

Conn. Brak't

10

Flange Bolt

11 12

Relief Valve O-ring

13

Flange

14

Cpmp. Sub Ass'y

15

O-ring

16 17

S-cap Cap Bolt

18

D-cap

Specification

Parts

Compressor

1

Parts N am e Bolt

Ґв2.0

Ґд2.7, DSL 2.0

Type

10PA-15C

10PA-17C

Oil

ND OIL8 120cc

ND OIL8 200cc

Capacity

155cc/rev

177cc/rev

Cylinder No.

10

10

Thermal fuse

-

-

DELTA 2.7, DIESEL 2.0Compressor

BETA 2.0Compressor

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SAFETY VALVE (Pressure Relief Valve) : Release the high-pressurized refrigerant and oil

- Operating pressure: 35.3~42.2kg/㎠

RECEIVER AND DRIER Receiver Drier

Function

1. Refrigerant purification Outlet

2. Refrigerant storage

Inlet

3. Vapor bubble separation Desiccant

The receiver-drier is the storage tank for liquid refrigerant, and it also contains a fiber and a desiccant (drying agent) to

Filter

remove foreign particles and moisture from the circulating refrigerant. The receiver-drier receives the highpressure

liquid

refrigerant

from

the

condenser and delivers it to the expansion valve.

TRIPLE SWITCH 9

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TUCSON AIR CONDITIONER There are 3 values of the set pressure, and it carries out the functions of dual switch, middle-pressure switch. It senses the pressure of the refrigerant and if the pressure is raised, close the switch and turns the cooling fan to the high-speed.

High Middle Low

Middle (4)

ECM

Low & high switch: Compressor control Middle switch: Condenser fan control

Electric diagram

Middle (3)

Low

High Middle

Low & high (1)

Low & high (2)

10

(1) (3)

(4)

(2)

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TUCSON AIR CONDITIONER 1. Compressor & condenser fan control table

Pressure (Kg/cm2)

Compressor

Conderser fan

Remarks

2.3 ~ 15.5

ON

OFF

Pressure increasing

18 ~

ON

ON

Pressure increasing

32

OFF

ON

Excessive pressure

26.0 ~ 14.0

ON

ON

Pressure decreasing

14.0 ~ 2.0

ON

OFF

Pressure decreasing

2. Switch on & off range • Low & high switch (kg/cm2)

2.3±0.25

26±2.0

ON

OFF • Middle switch (kg/cm2)

2.0±0.2

32±2.0

(Low switch)

(High switch) 18.0 ±0.8

ON

OFF 14.0±1.2

(Middle switch)

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FATC CONTROL MODULE A/C output

B B

FIN sensor

A/C relay

High MID

COMP.

A/C

A/C relay control

M

Low

A/C pressure switch

A/C “ON”

input

input

M

RADI.

CON.

FAN

FAN

ECM

When the ignition switch is in the ON position, battery voltage is applied to the coil on the control side of the A/C relay. Whth the A/C switch ON, voltage passes through the normally closed contacts of the triple switch, and enters the ECM. Operating parameters permitting, when the ECM receives the A/C ON signal, it will apply a ground to the control side of the A/C relay, allowing the relay contacts to close. The allows battery voltage, which is always present at the load side of the A/C relay, to pass through its contacts to the coil in the A/C compressor magnetic clutch. When this happen, the A/C compressor begins to operate.

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PARTS IN CABIN HEATER UNIT When engine coolant is allowed to flow through the heater core, heat from the coolant is transferred to the cooler air flowing through the fins of the heater core and into the passenger compartment.

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EVAPORATOR UNIT 1. Function The evaporator is another heat exchanger in the air conditioning system. It has coils and fins like the condenser, but functions in reverse. The evaporator receives the cold, low-pressure atomize liquid refrigerant from the expansion valve. As this cold refrigerant passes through the coils of the evaporator, which vaporizes and absorbs heat from the passenger compartment.

2. Operation The state of the refrigerant immediately after the receiver drier is 100% liquid. As soon as the liquid pressure drop, it starts boil, and by doing so, absorbs heat. This heat is removed from the air passing over the cooling fins of the evaporator and causes the air to cool. Refrigerant properly entered into the evaporator should allow for 100% liquid just after passing over the receiver drier and 100% gas at the outlet.

(Normal operation)

(Evaporator frizzing)

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EXPANSION VALVE The purpose of the expansion valve is to allow high-pressure liquid to expand as it enters the evaporator. It also controls, or meters the system to prevent the evaporator from flooding and freezing up. Expansion valve is inner equaling pressure type (Block type). Diaphragm is installed at the upper part of expansion valve. And, diaphragm upper chamber is connected to the sensing bulb.

AIR FILTER 1. Description Employing combination filter, dust and odor in the air is effectively removed Air filter cover

2. Life time

Filter replacement period is 5,000~12,000km. But this can be shortening if the road condition is bad causing more dust and black smoke in the air.

3. How to replace * Remove the glove box.* Pull the locking part of the air filter cover

Caution!! Make sure that mark on the filter.

BLOWER MOTOR ASSEMBLY Its purpose is to draw in passenger compartment air and send it through the evaporator core and the heater core, if desire. It consists of a 12V electronic motor and a squirrel cage style fan blade.

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TUCSON AIR CONDITIONER

Motor : magnet motor 1. Rated voltage : 12V2. Without load - speed : 3300 rpm (min) - current : 3.0A (max) 3. Temperature range in use: -30°C ~ 80 °C

POWER TR Blower speed is controlled by the fan control switch and power TR. Changing the fan switch from positions 1 through 7, allowing the fan to run faster. Base

Collector

Emitter

1. Power TR inspection method 1

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TUCSON AIR CONDITIONER

Step

BLOWER DISPLAY

Voltage(V)

1

3.8 0.5

2

4.92

0.5

3

6.03

0.5

4

7.15

0.5

5

8.27

0.5

6

9.38

0.5

7

10.5

0.5

8

BAT+

2. Power TR inspection method 2

HIGH SPEED BLOWER RELAY th

When the blower switch is positioned at 8 speed, the FATC controller will apply a ground to the control side of the high-speed blower relay. This allows battery voltage, to pass through its contacts to the coil in the highspeed blower relay. When it happens, the blower motor operates at high-speed.

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TUCSON AIR CONDITIONER

ACTUACTORS INTAKE DOOR ACTUATOR The intake door actuator (fresh/recirculation actuator) is a 12V electric motor, located side the blower motor assembly, and operated by the intake control switch.

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TUCSON AIR CONDITIONER It allows an occupant to choose between fresh (outside) air or recirculated inside air by moving the intake (fresh/recirculation) door to the desired position. When the door has reached the desired position, the actuator stops.

TEMP DOOR ACTUATOR TEMP DOOR ACTUATOR is located side of the heater unit. The actuator controls the position of the temperature blend door based on the voltage signal from the FATC module. Potentiometer inside actuator sends a feedback signal to the controller and controller cuts off the voltage signal coming from the controller when the required door position is achieved.

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TUCSON AIR CONDITIONER

MODE DOOR ACTUACTOR MODE DOOR ACTUATOR is located side of the heater unit.

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SENSORS FIN THERMO SENSOR 1. DescriptionFin sensor is installed in the evaporator in order to detect the temperature of evaporator. It prevents evaporator from freezing.

2. Location : Inserted into the evaporator pin

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TUCSON AIR CONDITIONER Temp. (°C)

Resistance (§ )Щ

Output voltage(v)

Temp. (°C)

Resistance (§ Щ )

Output voltage(v)

-5

10.37

2.82

12

4.43

1.78

-2

8.87

2.63

20

3.06

1.38

0

8

2.5

25

2.45

1.17

2

7.23

2.37

30

1.98

0.99

5

6.22

2.19

35

1.6

0.83

10

4.88

1.89

40

1.31

0.7

2-1 Characteristics

2-2. On/off temperatures: 0 ~ 0.5°C : OFF 3.5 ~ 4°C : ON

INCAR SENSOR The in-car sensor is located on the lower crash pad as shown in the picture. It contains a thermister, which measures the temperature of the air inside the passenger compartment. It senses the passenger compartment temperature, changes the resistance value, and enters the corresponding voltage into the automatic temperature control module (FATC).

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Inspection Negative type thermistor, that resistance will rise with lower temperature, and reduce with higher temperature.

[Characteristics]

PHOTO SENSOR The photo sensor is located by the driver side defrost nozzle. In response to photo intensity level in vehicle, the sensor will send signal to control module to control the blower level and discharge temperature. It contains a photovoltaic (sensitive to sunlight) diode.

10 ~ 15cm

^

(Over 0.45V )

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TUCSON AIR CONDITIONER

[Characteristics]

AMBIENT SENSOR The ambient temperature sensor is located at the front of the condenser fan shroud. This sensor detects the temperature of outside air and sends voltage signals to the controller. The sensor output will be used for discharge air temperature, sensor fail-safe, temperature door control, blower motor level control, mix mode control and in-car humidity control. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperatures

* Resistance between a & b]

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TUCSON AIR CONDITIONER

Temperature (Ў Й ) -10

Resistance (§ )Ъ 13.77

-5

10.5

0

8.09

5

6.29

10

4.93

20

3.12

30

2.02

40

1.35

.

AQS (Air Quality System)

Most drivers generally select the recirculation or fresh air mode

manually to intercept the inflow of harmful exhaust gas, in spite of inconvenience and danger, while driving. These harmful gases can be causes of tiredness, drowsiness or cough while driving. Although they detect the exhaust gas and manually close the inlet of the vehicles trapping the fumes inside, it is far too late to protect their health because they already inhaled the exhaust gas. Inversely, if driving with the inlet of the car closed completely, the shortage of air and the accumulation of carbon dioxide (CO2) will be occurred. This causes fatigue, headache,

Specification

enervation, and drowsiness.

Operating voltage AQS gives a perfect solution to these problems. The Air Quality System detects exhaust gas of neighboring vehicles and intercepts automatically. AQS Rated voltage

9 ~ 16V DC 12V DC

controls the inlet of car automatically and can be easily installed to the existing Operating temperature -30 ~ 105 vehicle. Manual operation is also available. Gasoline CXHY, CO Detectable engine gas gas Diesel NOX, SO2 engine gas 1. Location Reaction time less 1 sec The AQS is located at the front of the engine radiator.

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TUCSON AIR CONDITIONER

2. AQS switch

HUMIDITY SENSOR Humidity sensor detects the relative humidity of the car’s cabin. This sensor converts it into the frequency signal (Hz) and sends the signal to the FATC controller. If ambient air temperature or in-car humidity is outside certain range, it will turn on A/C to control in-car humidity preventing in-car fogging. Air conditioner operation depending on ambient temperature and humidity 1. Sensor characteristics

%RH ref

SPECIFICATION(Hz)

10

7060

20

6950

30

6855

40

6750

50

6645

60

6540

70

6410

80

6275

90

6100

TEMPERATURE UNIT CHANGE User may chose the temperature indication between °C and °F. Press the temp down button for 3 seconds during pressing auto button

* Setting unit: °C (Battery disconnection)

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TUCSON AIR CONDITIONER Press for 3 seconds or more

Keep pressing

CONTROL LOGIC 1. In-car temperature correctionWhen the in-car sensor detects a sudden steep temperature change, controller corrects the temperature differences slowly. - 1°C up / 4sec delay - 1°C down / 4sec delay

2. Ambient temperature correctionWhen the ambient sensor detects a sudden steep temperature change, controller corrects the temperature differences slowly. - 1°C up / 3 min delay (ex. Underground, tunnel) - 1°C down / 4sec delay

3. Heat radiation correctionWhen the photo sensor detects a sudden steep solar radiation change, controller compensates it slowly. - 350 → 1000 (W/m2) / 1 min delay - 350 ← 1000 (W/m2) / 5 min delay

4. Temp. door controlTemperature door angle (0% ~ 100%) is automatically controlled according to the selected temperature and other sensor signals. : Available selected temperature range - MAX COOL: 17°C - MAX HOT: 32°C - 17°C ↔ 32°C, 0.5°C step (62°F ↔ 90°F, 1°F step)

5. Blower speed control- AUTO mode: linear control - MANUAL mode: 8 step control6. Mode control - AUTO: Mode changes automatically according to the selected temperature and other sensor signals. - Manual: Mode changes when the mode switch is selected. VENT → B/L → FLOOR → MIX → VENT

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TUCSON AIR CONDITIONER

7. Intake door mode - The FRE/REC door state can be changed at AUTO mode according to the input data combination.

8. Compressor on/off control (AUTO mode) - Fin sensor: lower 0.5°C → Compressor OFF over 3°C → Compressor ON 9. Max hot function (When 32°C is selected at AUTO mode) - Temp door: MAX HOT side - Mode door: Floor mode - Intake door: FRE mod - Compressor: OFF - Blower speed: MAX high

10. Max cool function (When 17°C is selected at AUTO mode) - Temp door: MAX COOL side - Mode door: VENT mode - Intake door: REC mode - Compressor: ON - Blower speed: MAX HIGH

11. Warm air prevention function (Initial A/C operation)12. CELO (Cold Engine Lock Out) C O N D IT IO N

CO NT RO L FATC

- AUTO MODE

O U T PU T - BLOWER SPEED:

- A/C ON

• AUTO low: 12 seconds

- FIN sensor > 30㎠

• AUTO low ㎠ AUTO high: 30 seconds

functionOperating conditions A 1. Mode auto 2. Selecting Mode: Bi-level, Floor, Mix 3. Water temperature sensor under 68 4. Blower auto 5. Setting temperature: 3

higher than indoor temperatureOperation release

- When the occupant operates blower switch, bower speed will be release.- When the occupants operates mode switch, mode will be change. But blower motor runs low speed at remains time.- When the occupants select Max. cool(17

).

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TUCSON AIR CONDITIONER - When the detected temperature by WTS exceeds 58

.

DEF Mode

MIX(D/F)

Mode Auto

Auto High 6 sec. Auto Low Blower Off 35 IG ON Auto On 40

Operating conditions B 1. Ambient temp.

5

2. Indoor temp. – Ambient temp. ≤ 15

68

3. Mode auto

4. Blower auto Function Prohibition - When the occupant operates Blower switch. - Indoor temp. – Ambient temp. > 15 select Max. cool(17

- When the occupants

).

Compressor controlA. Compressor control for evaporator temperature. 1.Function: Protect compressor during winter season. 2.Control pattern: B. Compressor control for ambient temperature. Comp. On 3 1 1.Function: Protect compressor during winter season. Comp. Off 2.Control pattern: Comp. Off

Comp. On 4

2

DIAGNOSIS The FATC module self diagnosis test feature will detect electrical malfunction and provide error codes for system components with suspected failures. Ignition switch : OFF→ON

Press the OFF switch more than 4 times within 2 seconds during pressing the Auto switch

After VFD display blinks 3times per 0.5 seconds, start selfdiagnosis.

Self-diagnosis (Continuous operation) Press AUTO

Press AUTO

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TUCSON AIR CONDITIONER

Self-diagnosis (Step operation)

Press OFF

Press OFF Return to original condition

DTC list & failsafe DTC Description Failsafe Code 00 Normal 11 Open In-car sensor circuit 23 °C Fixed 12 Short In-car sensor circuit 13 Open Ambient sensor circuit 20 °C Fixed 14 Short Ambient sensor circuit 15 Open W ater temp. sensor circuit 16 Short W ater temp. sensor circuit 17 Open Fin sensor circuit - 2 °C Fixed 18 Short Fin sensor circuit Setting temp. 17~24.5 °C : MAX 19 Open or shorted Temp. door potentiometer Cool 20 Defective Temp. door potentiometer Vent mode : Vent mode Fixed 21 Open or shorted Mode door potentiometer Other mode : Def mode Fixed 22 Defective Mode door potentiometer 23 Open Humidity sensor circuit 24 Short Humidity sensor circuit To use the vehicles battery power, to be ignited in heater assembly, heating the air. It is a kind of supplementary vehicle heater.

B. PTC Heater operation condition * Engine rpm: Over 700 RPM * Ambient temperature : Below 5

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TUCSON AIR CONDITIONER * Battery voltage : 8.9V -OFF, 12.5V -ON * Engine coolant temperature : Below 70 * Blower motor: ON

* Operating time: 60 minutes

* Engine rpm

* Battery voltage

PTC ON

PTC ON

PTC OFF

PTC OFF 600(rpm)

8.9 (V)

700(rpm)

12.49 (V)

D. PTC Heater control PTC 1(15 seconds)

PTC 1 + 2(15 seconds)

PTC 1 + 2 + 3

E. Block diagram Operation condition Satisfaction

Relay operation signal

Relay

Relay

Relay

#1

#2

#3

Engine ECM Heater/ Air Blower motor operating signal

conditioner Relay operation

Controller

PTC Heater operation conditions are satisfaction, Engine ECM operates relay 1, heater/air conditioner controller receives relay 1 operation signal, it will apply a ground to the control side of relay 2 and 3, allowing the relay contacts to close. When this happen, the PTC Heater begins to operate.

F. PTC Control logic 1. Entering condition




Blower motor: On




PTC select signal: On (Operation condition satisfaction)

2. PTC Relay control




When the controller received the PTC on signal, the controller checks the battery voltage every 15 seconds.

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Battery voltage: Over 11.5 V (Normal), Below 11.5V(Abnormal)




PTC Relay operation order

PTC 1(15 seconds)

PTC 1 + 2(15 seconds) BAT+ normal

PTC 1 + 2 + 3(15 seconds)

PTC 1 + 2 + 3 BAT+ normal

PTC 1 + 2(15 seconds) BAT+ abnormal

PTC 1 BAT+ abnormal

3. PTC Off condition




Blower motor: Off




PTC select signal: Off




There is no delay time to PTC off when the blower motor off and PTC select signal off.

G. PTC Heater operation check 1. Method




Mode: Vent, Bi-level or Floor




Temperature: Full warm (HI)




Blower motor: Off (Press Off button)




Air intake switch: Press the intake switch for 5 seconds.

2. Control




A/C: Off




Air intake mode: Recirculation mode




LCD display blinks 30seconds per 0.5seconds.




Blower switch: Press the blower switch.




PTC Heater relay 2 and 3 operates for 30seconds.

3. Operation release




When the occupants operates A/C or Intake switch.




After PTC Heater operation for 30 seconds, it will turns off automatically.




When the occupant operates Ignition switch off.




It will go to initial condition (A/C off, Fresh mode), when PTC Heater operation checks release.




There is no PTC Heater check logic from Temperature or Mode switch operation.

32

Chonan Technical Service Training Center