1999 SUZUKI GRAND VITARA Section 8f

YH4
GRAND
VITARA
1B-44 AIR CONDITIONING (OPTIONAL)
REFRIGERANT PIPES AND HOSES
INSPECTION
1) Use a leak tester to check hoses and pipes for any gas leakage.
2) Check each hose or pipe clamp for tightness.
Retighten or replace loose clamp as required, if any.
REMOVAL
1) Recover refrigerant by using recovery and recycling equipment.
Be sure to follow the instruction manual for the equipment.
The amount of compressor oil removed must be measured and
the same amount must be added to the system when reinstal-
ling.
2) Replace defective hose or pipe.
CAUTION:
As soon as the above hose or pipe is disconnected, cap
its opened fitting to prevent moisture and dust from en-
tering.
INSTALLATION
1) Reverse removal procedure to install refrigerant line.
2) Evacuate and charge system. Refer to ªEVACUATINGº and
ªCHARGINGº in this section.
INSPECTION OF IDLE SPEED WITH A / C ON
For G16 and J20 engines model, refer to Section 6E1.
For H25 engine model, refer to Section 6E2.

YH4
GRAND
VITARA
1
1. Mode control switch coupler
2. A / C switch
3. Indicator lamp
AIR CONDITIONING (OPTIONAL) 1B-45
A / C SWITCH
REMOVAL
1) Disconnect negative (±) cable at battery.
2) If equipped with air bag system, disable air bag system.
Refer to ªDISABLING AIR BAG SYSTEMº in Section 10B.
3) Remove mode control switch (Refer to ªMODE CONTROL
SWITCHº in Section 1A).
INSPECTION
A / C Switch

Press A / C button and check if there is continuity between termi-
nals ªDº and ªGº.

With battery voltage (+) connected to terminal ªKº and (±) to termi-
nal ªDº, press A / C button and check if indicator lamp lights.
INSTALLATION
1) Install in reverse order of removal procedure.
2) If equipped with air bag system, enable air bag system.
Refer to ªENABLING AIR BAG SYSTEMº in Section 10B.

YH4
GRAND
VITARA
1B-46 AIR CONDITIONING (OPTIONAL)
A / C CONTROLLER
REMOVAL
1) Disconnect negative (±) cable at battery.
2) Disable air bag system, if equipped.
Refer to ªDISABLING AIR BAG SYSTEMº in Section 10B.
3) Open glove box, then remove screw.
4) Remove glove box.
5) Disconnect A / C controller coupler (2), evaporator thermistor
coupler (3).
6) Remove A / C controller (1) from heater unit (4).
INSPECTION
Refer to ªINSPECTION OF A / C CONTROLLER AND ITS CIR-
CUITº in this section.
INSTALLATION
1) Install in reverse order of removal procedure.
2) If equipped with air bag system, enable air bag system. Refer to
ªENABLING AIR BAG SYSTEMº in Section 10B.

YH4
GRAND
VITARA
Pressure ABCD SWITCH
ON
(Continuity)
OFF
(No continuity)
AIR CONDITIONING (OPTIONAL) 1B-47
DUAL PRESSURE SWITCH
INSPECTION
1) Check dual pressure switch (1) on liquid pipe for continuity at
normal temperature (approx. 25
C (77
F)) when A / C system
has a proper charge of refrigerant and when A / C system (com-
pressor) is under operation. In each of these cases, switch
should show proper continuity.
2) Using a manifold gauge set, check switch for operation at speci-
fied pressure as shown, refer to ªPERFORMANCE DIAGNO-
SISº in this section.
Switch ON : above ªCº and below ªDº
Switch OFF : below ªAº or above ªBº
ªAº: Approx. 200 kPa (2.0 kg / cm
2)
ªBº: Approx. 3200 kPa (32 kg / cm
2)
ªCº: Approx. 230 kPa (2.3 kg / cm
2)
ªDº: Approx. 2800 kPa (28 kg / cm
2)
Tightening torque:
Dual pressure switch: 10 N
.m (1.0 kg-m, 7.5 lb-ft)

YH4
GRAND
VITARA
1B-50 AIR CONDITIONING (OPTIONAL)
REMOVAL
1) Run engine at idle with A / C ON for 10 minutes.
2) Disconnect negative (±) cable at battery.
3) Recover refrigerant from refrigeration system using recovery
and recycling equipment.
NOTE:
The amount of compressor oil at removed must be mea-
sured and the same amount must be poured when installing
the compressor.
4) Disconnect thermal protector lead wire.
5) Disconnect suction and discharge hoses from compressor as-
sembly.
NOTE:
Cap open fitting immediately to keep moisture out of sys-
tem.
6)For G16 engine:
Remove compressor drive belt by loosening compressor as-
sembly mounting bolts.
For J20 engine:
Remove generator belt. Refer to Section 6H.
For H25 engine:
Remove compressor drive belt by loosening tension pulley bolt.
7) Remove compressor with magnet clutch assembly from its
mount.
8) If compressor assembly is replaced. Drain oil from compressor
assembly, and measure its amount.

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-51
G16 engine
J20 engine
H25 engine
3. Compressor pulley
4. Crankshaft pulley
INSTALLATION
FOR IWATA PRODUCTION VEHICLE
1) Pour new compressor oil. The amount must be the same with
the amount measured in REMOVAL.
NOTE:
Compressor assembly supplied from factory is filled up
with following amount of oil.
Amount of oil in compressor: 120 cm
3 (120 cc, 7.5 in3)
2)For G16 engine:
Install compressor assembly temporarily to bracket, then install
compressor drive belt (2).
For J20 and H25 engines:
Install compressor assembly to its bracket.
Tighten bolts (a) first, then (b).
Tightening Torque
(a), (b): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
3) Connect suction and discharge hoses to compressor assembly.
4)For G16 engine:
Tension compressor drive belt (2) by tightening compressor as-
sembly mounting bolts. Refer to Section 3B1 for drive belt ten-
sion.
Tighten bolt (a) first, then (b).
Tightening Torque
(a), (b): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
For J20 engine:
Install generator belt (1). Refer to Section 6H for details.
For H25 engine:
Install compressor drive belt (2). Refer to Section 3B1 for instal-
lation and belt tension.
5) Connect thermal protector lead wire.
6) Evacuate and charge system according to previously described
procedure.
CAUTION:
Be sure to use HFC-134a (R-134a) compressor oil.

YH4
GRAND
VITARA
1B-52 AIR CONDITIONING (OPTIONAL)
G16 engine
J20 engine
3. Compressor pulley
4. Crankshaft pulley
FOR CAMI PRODUCTION VEHICLE
1) Pour new compressor oil. The amount must be the same with
the amount measured in REMOVAL.
NOTE:
Compressor assembly supplied from factory is filled up
with the following amount of oil.
Amount of oil in compressor: 120 cm
3 (120 cc, 7.5 in3)
2)For G16 engine:
Install compressor assembly temporarily to bracket, then install
compressor drive belt (2).
For J20 engine:
Install compressor assembly to its bracket.
Tighten bolts (a).
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
3) Connect suction and discharge hoses to compressor assembly.
4)For G16 engine:
Tension compressor drive belt (2) by tightening compressor as-
sembly mounting bolts. Refer to Section 3B1 for drive belt ten-
sion.
Tighten bolt (a) first, then (b).
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
For J20 engine:
Install generator belt (1). Refer to Section 6H for details.
5) Connect thermal protector lead wire.
6) Evacuate and charge system according to previously described
procedure.
CAUTION:
Be sure to use HFC-134a (R-134a) compressor oil.

YH4
GRAND
VITARA
AIR CONDITIONING (OPTIONAL) 1B-53
1. Clutch plate bolt
2. Clutch plate
3. Circlip
4. Clutch pulley
5. Shim
6. Clutch coil
7. Compressor 567
MAGNET CLUTCH ASSEMBLY (FOR DENSO)
INSPECTION

Inspect clutch plate and clutch pulley for signs of oil.

Check clutch pulley for noise and grease leakage.

Using an ohmmeter, measure resistance of clutch coil between
clutch lead wire (1) and compressor body (2).
If measured resistance is not within tolerance, replace magnet
clutch assembly.
Standard resistance: 3.5 ± 5.0
at 20C, 68F
REMOVAL
1) Remove compressor assembly from vehicle. Refer to ªCOM-
PRESSOR ASSEMBLYº in this section.
2) Fix clutch plate (1) with special tool (A) and remove clutch plate
bolt.
Special Tool
(A): 09991-06020
NOTE:
Do not reuse clutch plate bolt.
3) Using special tool (B), remove clutch plate (1).
Special Tool
(B): 09991-06030