SUZUKI SX4 2006 1.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-21
7) When refrigerant container (1) is emptied, use the
following procedure to replace it with a new
refrigerant container.
a) Close low pressure valve.
b) Replace empty container with a refrigerant
container which has been charged with
refrigerant. When using refrigerant container tap
valve (2), use the following procedure for
replacement.
i) Retract needle (3) and remove refrigerant
container tap valve by loosening its plate nut
(4).
ii) Install the refrigerant container tap valve to a
new refrigerant container.
c) Purge any air existing in center charging hose.
When using refrigerant container tap valve, use
the following procedure to purge air.
i) Once fully tighten refrigerant container tap
valve (1), and then loosen (open) plate nut
(2) slightly.
ii) Open low pressure side valve (3) of manifold
gauge set (4) a little.
iii) As soon as refrigerant comes out with a
“hiss” through a clearance between
refrigerant container and tap valve, tighten
plate nut as well as low pressure side valve.
iv) Turn handle of tap valve clockwise so that its
needle is screwed into the new container to
make a hole for refrigerant flow.8) After the system has been charged with specified
amount of refrigerant or when low pressure gauge
(1) and high pressure gauge (2) have indicated the
following specified value, close low pressure side
valve (3) on manifold gauge set (4).
Specified amount of refrigerant
430 ± 20 g (15.2 ± 0.7 oz))
Low side and high side pressure example
Removal of Manifold Gauge Set
WARNING!
High pressure side is under high pressure.
Therefore, be careful not to get injured
especially on your eyes and skin.

For the A/C system charged with the specified amount of
refrigerant, remove manifold gauge set as follows:
1) Close low pressure side valve of manifold gauge set.
(The high pressure side valve is closed continuously
during the process of charging.)
2) Close refrigerant container valve.
3) Stop engine.
4) Using shop rag, remove charging hoses from service
valves. This operation must be performed quickly.
5) Put caps on service valves.
I2RH01720018-01
I2RH01720019-01
Gauges should read as follows when ambient
temperature is 30 °C (86 °F).
Pressure
on high pressure gauge1130 – 1560 kPa
(11.4 – 15.6 kgf/cm
2)
(162.3 – 221.8 psi)
Pressure
on low pressure gauge270 – 390 kPa
(2.7 – 3.9 kgf/cm
2)
(38.8 – 56.0 psi)
4
2
1
3
I7RW01721013-02

Downloaded from www.Manualslib.com manuals search engine 7B-22 Air Conditioning System: Manual Type
Check A/C System for Refrigerant Leaks
Whenever a refrigerant leak is suspected in the system
or any service operation has been performed which may
result in malfunction of lines and connections, it is
advisable to check for leaks.
Common sense should be used during refrigerant leak
test, since the need and extent of any such test will, in
general, depend upon the nature of a complaint and the
type of a service performed on the system.
Liquid leak detector
WARNING!
• To prevent explosions and fires, make sure
that there are no flammables in the vicinity.
• When the refrigerant exposed to fire, it
turns into a poisonous gas (phosgene). Do
not inhale this gas.

There is a number of fittings and places throughout the
A/C system where a liquid leak detector solution may be
used to pinpoint refrigerant leaks.
By merely applying the solution to the area in question
with a swab, such as attached to the cap of a vial,
bubbles will form within seconds if there is a leak.
For confined areas, such as sections of the evaporator
and condenser, an electronic (refrigerant) leak detector
is more practical for determining leaks.
Special tool
(A): 09990–86012
Condenser Cooling Fan Removal and
Installation
S6RW0D7216002
CAUTION!
Be careful not to damage fins of radiator. If
radiator fin is bent, straighten it by using flat
head screwdriver or pair of pliers.

Removal
1) Disconnect negative (–) cable at battery.
2) Disconnect condenser cooling fan motor coupler.
3) Remove reservoir (1) from radiator.
4) Remove condenser cooling fan (2) from radiator (3).
Installation
Reverse removal procedure to install condenser cooling
fan.
(A)
I5RW0A721054-01
13
2
I5RW0A721017-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-23
Condenser Cooling Fan InspectionS6RW0D7216003
1) Check condenser cooling fan motor for resistance
between terminal “a” and “b” as shown.
If there is no continuity, replace condenser cooling
fan motor.
2) Connect battery to condenser cooling fan motor
terminal “a” and “b” as shown in figure, and then
check if the condenser cooling fan motor operates
smoothly.
Reference
Condenser cooling fan specified current at 12 V:
7 A maximum
Condenser Assembly On-Vehicle InspectionS6RW0D7216004
Check the followings.
• Clog of condenser fins
If any clog is found, condenser fins should be washed
with water and should be dried with compressed air.
• Condenser fins for leakage and breakage
If any defects are found, repair or replace condenser.
• Condenser fittings for leakage.
If any defects are found, repair or replace condenser.
Condenser Assembly Removal and InstallationS6RW0D7216005
CAUTION!
Do not damage condenser fins. If condenser
fin is bent, straighten it by using flat head
screwdriver or pair of pliers.

Removal
1) Recover refrigerant from A/C system referring to
“Operation Procedure for Refrigerant Charge”.
NOTE
The amount of removed compressor oil must
be measured for replenishing compressor
oil.

2) Remove front bumper referring to “Front Bumper
and Rear Bumper Components in Section 9K”.
3) Disconnect discharge hose (1) and liquid pipe (2)
from condenser assembly (3).
4) Remove radiator assembly and condenser assembly
mounting bolts (4).
ab
I5RW0A721018-02
a
b
I5RW0A721019-02
1
2
3
4
4
I7RW01721025-04

Downloaded from www.Manualslib.com manuals search engine 7B-24 Air Conditioning System: Manual Type
5) Move condenser assembly from the vehicle in the
arrow direction in the order of 1, 2 and 3 as shown,
and it can be removed.
Installation
Reverse the removal procedure to install condenser
noting the following instructions.
• Replenish specified amount of compressor oil to
compressor suction side referring to “Replenishing
Compressor Oil” in “Operation Procedure for
Refrigerant Charge”.
• Evacuate and charge the A/C system referring to
“Evacuation” and “Charge” in “Operation Procedure
for Refrigerant Charge”.
Desiccant Removal and InstallationS6RW0D7216006
Removal
1) Remove condenser assembly referring to
“Condenser Assembly Removal and Installation”.
2) Remove circlip (4) using special tool.
Special tool
: 09900–06107
3) Remove the cap (1) from the receiver / dryer tank
(2).
4) Remove desiccant (3).Installation
Reverse the removal procedure noting the following
instructions.
• Replenish specified amount of compressor oil to
compressor suction side referring to “Operation
Procedure for Refrigerant Charge”.
• Do not remove desiccant from the plastic bag until just
before inserting it into the receiver.
• Apply compressor oil to O-ring (1).
• Be sure to install circlip (2) with its flat face (3)
directed to cap.
• Install condenser assembly referring to “Condenser
Assembly Removal and Installation”.
• Evacuate and charge the A/C system referring to
“Evacuation” and “Charge” in “Operation Procedure
for Refrigerant Charge”.
“1”
“2”
“3”
I5RW0A721021-02
3
2
1
4
I5RW0A721022-01
: Do not reuse
1
2
3
I5RW0A721052-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-25
HVAC Unit ComponentsS6RW0D7216007
NOTE
The figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are installed
at the opposite side.

1
10
1
9
8
25
25
3
20
3
19 19
19
24
24 21
4
23*27 15 16* 14
25*18*2
2526
17*1312 11
5*22
67
*
26
5*
I6RW0C721006-01
1. Blower upper case 8. Air intake control actuator 15. Evaporator 22. Temperature control door
assembly
2. Blower lower case 9. Air intake control link 16. Evaporator temperature sensor 23. Drain hose
3. Heater unit upper case 10. Air intake control door 17. Expansion valve 24. Cable lock clamp
4. Heater unit lower case 11. Blower motor 18. Expansion pipe 25. Packing
5. Foot duct 12. Blower motor cap 19. Air flow control lever 26. O-ring
: Apply compressor oil.
6. HVAC air filter (if equipped) 13. Blower motor resister 20. Air flow control door assembly 27. Resistance board (non-A/C)

Downloaded from www.Manualslib.com manuals search engine 7B-26 Air Conditioning System: Manual Type
HVAC Unit Removal and InstallationS6RW0D7216008
Removal
1) Recover refrigerant from A/C system with recovery
and recycling equipment referring to “Recovery” in
“Operation Procedure for Refrigerant Charge”.
2) Drain engine coolant referring to “Cooling System
Draining in Section 1F”, and then disconnect heater
hoses from HVAC unit.
3) Remove cowl top cover from vehicle body referring
to “Cowl Top and Front Lower Crossmember
Components in Section 9K”
4) Remove instrument panel from vehicle body
referring to “Instrument Panel Removal and
Installation in Section 9C”.
5) Loosen a bolt (1) and remove pipes from expansion
valve (2).6) Remove HVAC unit (1) from vehicle body by
removing nuts (2).
7. Cover (without HVAC air
filter)14. Heater core 21. Temperature control lever : Do not reuse.
1
2
I7RW01721016-01
2
2
2
1
I7RW01710003-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-27
Installation
Reverse removal procedure noting the following
instructions.
• Replenish specified amount of compressor oil to
compressor suction side referring to “Replenishing
Compressor Oil” in “Operation Procedure for
Refrigerant Charge”.
• Install the padding (1) to the installation hole
uniformly.
• Evacuate and charge the A/C system referring to
“Evacuation” and “Charge” in “Operation Procedure
for Refrigerant Charge”.
• Refill cooling system with coolant referring to “Cooling
System Flush and Refill in Section 1F”.
• Adjust control cables referring to “HVAC Control Unit
Removal and Installation in Section 7A”. (vehicle with
manual type A/C)
Evaporator InspectionS6RW0D7216009
Check the followings.
• Clog of A/C evaporator fins.
If any clogs are found, A/C evaporator fins should be
washed with water, and then should be dried with
compressed air.
• A/C evaporator fins for leakage and breakage.
If any defects are found, repair or replace A/C
evaporator.
• A/C evaporator fittings for leakage.
If any defects are found, repair or replace A/C
evaporator.
Evaporator Temperature Sensor Removal and
Installation
S6RW0D7216010
Removal
1) Remove HVAC unit from vehicle body referring to
“HVAC Unit Removal and Installation”.
2) Remove evaporator temperature sensor (1) from
evaporator by (2) disassembling HVAC unit.
Installation
Reverse the removal procedure noting the following
instruction.
• Install evaporator temperature sensor (1) onto
evaporator (2) as shown.
LH steering vehicle
RH steering vehicle
1
I5RW0A721025-02
3. 138 ± 5 mm (3.3 ± 0.2 in.)
4. Sensor part fixed to 12th fin from pipe fitting side
5. Holding part fixed to 13th fin from pipe fitting side
6. Pipe fitting
1
2
I7RW01721018-01
5
4
6 1
2
3I7RW01721026-01
1
5
642
3
I6RW0C721007-01

Downloaded from www.Manualslib.com manuals search engine 7B-28 Air Conditioning System: Manual Type
Evaporator Temperature Sensor InspectionS6RW0D7216011
Check resistance between terminals of evaporator
temperature sensor (1).
If check results are as not specified, replace evaporator
temperature sensor.
Evaporator temperature sensor resistance
0 °C (32 °F): 6.6 – 6.8 kΩ
25 °C (77 °F): 2.0 – 2.1 kΩ
Expansion Valve Removal and InstallationS6RW0D7216012
Removal
1) Recover refrigerant from the A/C system with
recovery and recycling equipment referring to
“Recovery” in “Operation Procedure for Refrigerant
Charge”.
2) Loosen a bolt (1) and remove pipes from expansion
valve (2).
3) Loosen bolts (3) and remove expansion valve.
Installation
Reverse removal procedure noting the following
instructions.
• Apply compressor oil to O-ring of expansion valve and
pipes.
• Tighten expansion valve bolts to specified torque.
Tightening torque
Expansion valve bolt: 4.5 N·m (0.45 kgf-m, 3.5 lb-
ft)
• Evacuate and charge the A/C system referring to
“Evacuation” and “Charge” in “Operation Procedure
for Refrigerant Charge”.
Expansion Valve InspectionS6RW0D7216013
Refer to “A/C System Performance Inspection”.
[A]: Resistance
[B]: Temperature
(kΩ)
6.75
2.00
0
3225
77 [A]
[B]
(˚C)
(˚F)
1
I7RW01721020-01
1
22 3
I4RS0A720028-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-29
A/C Refrigerant Pressure Sensor and Its Circuit
Inspection
S6RW0D7216014
1) Disconnect A/C refrigerant pressure sensor
connector.
2) Turn ignition switch to ON position.
3) Check if voltage between “RED” wire terminal and
“ORN” wire terminal of A/C refrigerant pressure
sensor connector is 4.75 V to 5.25 V.
If not, check A/C refrigerant pressure sensor circuit.
4) Connect A/C refrigerant pressure sensor connector
with ignition switch turned OFF.
5) Connect manifold gauge set to the charging valves.
6) Check A/C refrigerant pressure sensor voltage of
ECM connector referring to “A/C System Inspection
at ECM”.
If voltage is not as specified below, replace A/C
refrigerant pressure sensor.
A/C refrigerant pressure sensor voltage
specifications (A/C refrigerant pressure measured
by manifold gauge)
0.8 MPa (8.0 kgf/cm2, 116 psi): 1.40 – 1.78 V
1.4 MPa (14 kgf/cm2, 203 psi): 2.18 – 2.64 V
1.6 MPa (16 kgf/cm2, 232 psi): 2.44 – 2.92 V
1.8 MPa (18 kgf/cm2, 261 psi): 2.70 – 3.21 V
A/C Refrigerant Pressure Sensor Removal and
Installation
S6RW0D7216015
Removal
1) Recover refrigerant from the A/C system with the
recovery and recycling equipment referring to
“Recovery” in “Operation Procedure for Refrigerant
Charge”.
2) Disconnect negative (–) cable from battery.
3) Disconnect A/C refrigerant pressure sensor
connector.
4) Remove A/C refrigerant pressure sensor (1) from
liquid pipe (2).Installation
Reverse removal procedure noting the following
instructions.
• Apply compressor oil to O-ring of A/C refrigerant
pressure sensor.
• Tighten A/C refrigerant pressure sensor to specified
torque.
Tightening torque
A/C refrigerant pressure sensor (a): 11 N·m (1.1
kgf-m, 8.0 lb-ft)
• Evacuate and charge the A/C system referring to
“Evacuation” and “Charge” in “Operation Procedure
for Refrigerant Charge”.
A/C Switch InspectionS6RW0D7216016
• Check that there is continuity between terminal (1)
and terminal (2) when A/C switch is at ON position.
• Check that there is no continuity between terminal (1)
and terminal (2) when A/C switch is at OFF position.
If check result does not meet the above conditions,
replace HVAC control unit.
2
1
I5RW0A721029-01
(a)
I5RW0A721030-01
1
2
I5RW0A721031-01

Downloaded from www.Manualslib.com manuals search engine 7B-30 Air Conditioning System: Manual Type
A/C System Relay InspectionS6RW0D7216017
NOTE
Do not use blue relay for the substitute of
white relay because internal durability of a
blue relay is different from the durability of a
white relay.

1) Disconnect negative (–) cable from battery.
2) Remove compressor relay (1) or condenser cooling
fan relay (2) from main fuse box (3).
3) Check that there is no continuity between terminal
“c” and “d”. If there is continuity, replace relay.
4) Connect battery positive (+) terminal to terminal “b”
of relay and battery negative (–) terminal to terminal
“a” of relay, and then check continuity between
terminal “c” and “d”. If there is no continuity, replace
relay.
Compressor Drive Belt Inspection and
Adjustment
S6RW0D7216018
Inspection
• Check compressor drive belt (1) for wear, crack,
deformation and cleanliness. If any defect is found,
replace the belt with new one referring to
“Compressor Drive Belt Removal and Installation”.
• Check compressor drive belt tension by measuring
how much it deflects when pushed intermediate point
between magnet clutch pulley (6) and crankshaft
pulley (3) with about 100 N (10 kg) force after rotating
crankshaft pulley 360°. If belt tension is out of
specification, adjust belt tension referring to
“Adjustment”.
Compressor drive belt tension
“a”
: 7 – 8 mm (0.28 – 0.31 in.)
NOTE
When replacing drive belt, adjust drive belt
tension to the following specifications.

New compressor drive belt tension “a”
: 6 – 7 mm (0.24 – 0.28 in.)
Adjustment
1) Loosen tension pulley nut (4).
2) Adjust belt tension by tighten or loosen tension
pulley adjusting bolt (5).
3) Tighten tension pulley nut.
4) Rotate the crankshaft pulley 360°, and then recheck
belt tension.
3
1
2
“a”
“b”“c”
“d”
I5RW0B721023-01
2. Tension pulley
I5RW0A721033-01