MAINTENANCE AND LUBRICATION 0B-21
STEERING
Check to ensure that steering wheel is free from instability, or abnormally heavy feeling.
Check that the vehicle does not wander or pull to one side.
ENGINE
Check that engine responds readily at all speeds.
Check that engine is free from abnormal noise and abnormal vibration.
BODY, WHEELS AND POWER TRANSMITTING SYSTEM
Check that body, wheels and power transmitting system are free from abnormal noise and abnormal vibration or
any other abnormal condition.
METERS AND GAUGE
Check that speedometer, odometer, fuel meter, temperature gauge, etc. are operating accurately.
LIGHTS
Check that all lights operate properly.
WINDSHIELD DEFROSTER
Periodically check that air comes out from defroster outlet when operating heater or air conditioning.
Set mode control lever to defroster position and fan switch lever to “HI” position for this check.
RECOMMENDED FLUIDS AND LUBRICANTS
Engine oil SE, SF, SG, SH or SJ grade (Refer to “ENGINE OIL AND OIL FILTER”
in this section for engine oil viscosity.)
Engine coolant
(Ethylene glycol base coolant)“Antifreeze/Anticorrosion coolant”
Brake fluid DOT 3
Manual transmission oil Refer to “M/T OIL CHANGE” in Section 7A.
Transfer oil (4WD) Refer to “TRANSFER OIL CHANGE” in Section 7D.
Differential oil (4WD) Refer to “DIFFERENTIAL OIL CHANGE” in Section 7F.
Automatic transmission fluid
An equivalent of DEXRON
®-III
Door hinges Engine oil or water resistance chassis grease
Hood latch assembly Engine oil or water resistance chassis grease
Key lock cylinder Spray lubricant
AIR CONDITIONING (OPTIONAL) 1B-1
6F1
6F2
6G
1B
7A
7A1
7B1
7C1
7D
7E
7F
8A
8B
8C
8D
8E
9
10
10A
10B
SECTION 1B
AIR CONDITIONING (OPTIONAL)
CONTENTS
GENERAL DESCRIPTION .............................. 1B-3
REFRIGERANT CIRCULATION .................. 1B-3
REFRIGERANT TYPE ................................. 1B-3
MAJOR COMPONENTS AND
LOCATION ................................................... 1B-4
DIAGNOSIS ..................................................... 1B-5
GENERAL DIAGNOSIS TABLE ................... 1B-5
ABNORMAL NOISE DIAGNOSIS ................ 1B-7
QUICKLY CHECKING OF REFRIGERANT
CHARGE ...................................................... 1B-9
PERFORMANCE DIAGNOSIS .................. 1B-10
PERFORMANCE DIAGNOSIS TABLE .. 1B-12
DETAIL DIAGNOSIS TABLE (AMBIENT
TEMPERATURE AT 30°C (86°F)) ......... 1B-13
COMPRESSOR DRIVE BELT ................... 1B-15ELECTRICAL DIAGNOSIS ........................... 1B-16
WIRING DIAGRAM .................................... 1B-16
A/C SYSTEM INSPECTION OF ECM AND
ITS CIRCUITS ........................................... 1B-17
REFRIGERANT RECOVERY, EVACUATING
AND CHARGING........................................... 1B-20
OPERATION PROCEDURE FOR
REFRIGERANT CHARGING ..................... 1B-20
RECOVERY ............................................... 1B-21
REPLENISHING COMPRESSOR OIL ...... 1B-21
EVACUATING............................................ 1B-22
EVACUATING PROCEDURE ................ 1B-22
CHECKING SYSTEM FOR PRESSURE
LEAKS.................................................... 1B-23
CHARGING................................................ 1B-24
CHARGING PROCEDURE .................... 1B-24 WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System :
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
CAUTION:
The air conditioning system of this vehicle uses refrigerant HFC-134a (R-134a).
None of refrigerant, compressor oil and component parts is interchangeable between two types of
A/C : one using refrigerant HFC-134a (R-134a) and the other using refrigerant CFC-12 (R-12).
Be sure to check which refrigerant is used before any service work including inspection and mainte-
nance. For identification between these two types, refer to “REFRIGERANT TYPE” in this section.
When replenishing or changing refrigerant and compressor oil and when replacing parts, make sure
that the material or the part to be used is appropriate to the A/C installed in the vehicle being serviced.
Use of incorrect one will result in leakage of refrigerant, damage in parts or other faulty condition.
NOTE:
For basic servicing method of the air conditioning system that is not described in this section, refer to
“AIR CONDITIONING BASIC MANUAL (Part number : 99520-02130)”.
1B-6 AIR CONDITIONING (OPTIONAL)
Cool air won’t come
out or insufficient
cooling (A/C system
normal operative)Insufficient or excessive charge of
refrigerantCheck charge of refrigerant and system for
leaks.
Condenser clogged Check condenser.
A/C evaporator clogged or frosted Check A/C evaporator and A/C evaporator
temperature sensor.
A/C evaporator temperature sensor
faultyCheck A/C evaporator temperature sen-
sor.
Expansion valve faulty Check expansion valve.
Receiver/dryer clogged Check receiver/dryer.
Compressor drive belt loosen or broken Adjust or replace drive belt.
Magnetic clutch faulty Check magnetic clutch.
Compressor faulty Check compressor.
Air in A/C system Replace dryer, and perform evacuation
and charging.
Air leaking from cooling unit or air duct Repair as necessary.
Heater and ventilation system faulty Check air inlet box (cooling unit), heater
control assembly and heater unit referring
to Section 1A.
Blower fan motor faulty Check blower fan motor referring to Sec-
tion 1A.
Excessive compressor oil existing in A/
C systemPull out compressor oil in A/C system cir-
cuit, and check compressor.
Cool air won’t come
out only intermittentlyWiring connection faulty Repair as necessary.
Expansion valve faulty Check expansion valve.
Excessive moisture in A/C system Replace dryer, and perform evacuation
and charging.
Magnetic clutch faulty Check magnetic clutch.
Excessive charge of refrigerant Check charge of refrigerant.
Cool air comes out
only at high speedCondenser clogged Check condenser.
Insufficient charge of refrigerant Check charge of refrigerant.
Air in A/C system Replace dryer, and perform evacuation
and charging.
Compressor drive belt loosen or broken Adjust or replace drive belt.
Compressor faulty Check compressor.
Cool air won’t come
out only at high speedExcessive charge of refrigerant Check charge of refrigerant.
A/C evaporator frosted Check A/C evaporator and A/C evaporator
temperature sensor.
Insufficient velocity of
cooled airA/C evaporator clogged or frosted Check A/C evaporator and A/C evaporator
temperature sensor.
Air leaking from cooling unit or air duct Repair as necessary.
Blower fan motor faulty Check blower fan motor referring to Sec-
tion 1A.
Wiring or grounding faulty Repair as necessary. Condition Possible Cause Correction
1B-12 AIR CONDITIONING (OPTIONAL)
PERFORMANCE DIAGNOSIS TABLE
HIGH PRESSURE GAUGE
LOW PRESSURE GAUGE
THERMOMETER AT CENTER DUCT
NOTE:
If ambient temperature is approximately 30°C (86°F), it is possible to diagnose A/C system in detail
referring to “DETAIL DIAGNOSIS TABLE (AMBIENT TEMPERATURE AT 30 °C (86°F))” under “PER-
FORMANCE DIAGNOSIS” in this section.
Condition Possible Cause Correction
Pressure high
(“A” area of high side
graph)Refrigerant overcharged Recharge.
Expansion valve frozen or clogged Check expansion valve.
Clogged refrigerant passage of high side Clean or replace.
Radiator/condenser cooling fan malfunction (Insufficient
cooling of condenser)Check radiator/condenser cooling fan.
Dirty or bent condenser fins (Insufficient cooling of con-
denser)Clean or repair.
Compressor malfunction (Insufficient oil etc.) Check compressor.
Engine overheat Check engine cooling system referring to
Section 6B.
Pressure low
(“B” area of high side
graph)Insufficient refrigerant (Insufficient charge or leakage) Check for leakage, repair if necessary
and recharge.
Expansion valve malfunction (valve opens too wide) Check expansion valve.
Compressor malfunction (Insufficient compression) Check compressor.
Condition Possible Cause Correction
Pressure high
(“C” area of low side
graph)Expansion valve malfunction (valve opens too wide) Check expansion valve.
Compressor malfunction (Insufficient compression) Check compressor.
Pressure low
(“D” area of low side
graph)Insufficient refrigerant (Insufficient charge or leakage) Check for leakage, repair if necessary
and recharge.
Expansion valve malfunction (valve opens too narrow) Check expansion valve.
Clogged refrigerant passage (crashed pipe) Repair or replace.
Condition Possible Cause Correction
Outlet air temperature at
center duct is high
(Crossing point is in area
“E”)Insufficient or excessive charge of refrigerant Check refrigerant pressure.
Dirty or bent A/C evaporator fins Clean or repair.
Air leakage from cooling (heater) unit or air duct Repair or replace.
Malfunctioning, switch over function of door in cooling
(heater) unitRepair or replace.
Compressor malfunction Check compressor.
Outlet air temperature at
center duct is low
(Crossing point is in area
“F”)Insufficient air volume from center duct (Heater blower
malfunction)Check blower motor and fan.
Compressor malfunction Check compressor.
1B-20 AIR CONDITIONING (OPTIONAL)
REFRIGERANT RECOVERY, EVACUATING AND CHARGING
OPERATION PROCEDURE FOR REFRIGERANT CHARGING
WARNING:
Your eyes should not be exposed to refrigerant (liquid).
Any liquid HFC-134a (R-134a) escaping by accident shows a temperature as low as approximately
–6°C (32°F) below freezing point. Should liquid HFC-134a (R-134a) get into your eyes, it may cause a
serious injury. To protect your eyes against such accident, it is necessary to always wear goggles.
Should it occur that HFC-134a (R-134a) strikes your eyes, consult a doctor immediately.
– Do not use your hand to rub the affected eye(s). Instead, use quantities of fresh cold water to
splash it over the affected area to gradually raise temperature of such area above freezing point.
– Obtain proper treatment as soon as possible from a doctor or eye specialist.
Should the HFC-134a (R-134a) liquid come into contact with your skin, the affected area should be
treated in the same manner as when skin is frostbitten or frozen.
Refrigerant must not be handled near where welding or steam cleaning is performed.
Refrigerant should be kept at a cold and dark place. It should never be stored where a high temper-
ature is anticipated, e.g. where exposed to direct sun light, close to fire or inside vehicle (including
trunk room).
Avoid breathing fumes produced when HFC-134a (R-134a) is burned. Such fumes may be hazard-
ous to health.
Replenish compressor oil
Start evacuating
Inspect and repair connections
Charge 360 ± 30 g of
refrigerant in gas form Stop evacuating 15 minutes (below –760 mmHg)
Wait 10 mintues
If gauge shows
abnormal conditions Check system for
pressure tightness
Check A/C system
With refrigerant
Check system for refrigerant
leaks and refrigerant
charging quantity
Performance test
1B-28 AIR CONDITIONING (OPTIONAL)
Route drain hose so that drained water does not make any contact to vehicle components.
If pipes or hoses are replaced, replenish specified amount of compressor oil to compressor suction side by
referring to “REPLENISHING COMPRESSOR OIL” in this section.
HANDLING REFRIGERANT HFC-134a (R-134a)
Always wear goggles to protect your eyes.
Avoid you direct contact to liquid refrigerant.
Do not heat refrigerant container higher than 40°C (104°F).
Do not discharge refrigerant into atmosphere.
Do not allow liquid refrigerant to touch bright metals. Refrigerant combined with moisture is corrosive and
will tarnish surfaces of bright metals including chrome.
REFRIGERANT RECOVERY
When discharging refrigerant out of A/C system, always recover it by using refrigerant recovery and recycling
equipment. Discharging refrigerant HFC-134a (R-134a) into atmosphere would cause adverse effect to environ-
ments.
REFRIGERANT CHARGE
After perform replenishing compressor oil and evacuating, charge a proper amount of refrigerant to A/C system
referring to “CHARGING” in this section.
CONDENSER ASSEMBLY
INSPECTION
Check the following.
Clog of condenser fins.
If, any clogs are 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. CAUTION:
Do not perform an additional refrigerant charging to A/C system. This cause it to overcharge.
CAUTION:
Be careful not to damage condenser fins. If condenser fin
is bent, straighten it by using flat head screwdriver or
pair of pliers.
AIR CONDITIONING (OPTIONAL) 1B-31
Tighten receiver/dryer cap to specified torque
Tightening torque
Receiver / dryer cap : 13 N·m (1.3 kg-m, 9.5 lb-ft)
Replenish specified amount of compressor oil to compressor
suction side by referring to “REPLENISHING COMPRES-
SOR OIL” in this section.
RADIATOR/CONDENSER COOLING FAN
MOTOR
REMOVAL AND INSTALLATION
For details, refer to “RADIATOR” in Section 6B.
INSPECTION
1) Check continuity terminal “a” – “b” and “c” – “d” about the
radiator/condenser cooling fan motor (1).
If check results are no continuity, replace radiator/condenser
cooling fan motor.
2) Check no continuity “a” – “c” and “b” – “d” about the radiator/
condenser cooling fan motor (1).
If check result are continuity, replace radiator/condenser
cooling fan motor.
3) Connect battery to radiator/condenser cooling fan motor ter-
minal “a” – “b” and “c” – “d” as shown in figure, then check
that the radiator/condenser cooling fan motor operates
smoothly.
Reference current of radiator/condenser cooling fan
motor at 12 V
“a” – “b” : 7.8 – 11.8 A
“c” – “d” : 4.8 – 8.8 A
AIR CONDITIONING (OPTIONAL) 1B-33
4) Remove fresh air control cable (1) and A/C evaporator tem-
perature sensor coupler.
5) Disconnect suction hose (1) and condenser outlet hose (2)
by removing attaching bolt (3).
6) Remove cooling unit mounting nuts (4) and screws (5).
7) Remove cooling unit (6).
INSPECTION
Check the following.
Clog of A/C evaporator fins.
If any clogs are found, A/C evaporator fins should be
washed with water, and 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.
INSTALLATION
Reverse removal procedure to install cooling unit noting the fol-
lowing instructions.
If A/C evaporator temperature sensor removed, its should be
reinstalled in original position.
Replenish specified amount of compressor oil to compressor
suction side by referring to “REPLENISHING COMPRES-
SOR OIL” in this section.
Install uniformly the packing (1) to installation hole.
Evacuate and charge refrigerant by referring to “EVACUAT-
ING” and “CHARGING” in this section.
Adjust fresh air control cable, refer to “HEATER LEVER
ASSEMBLY” in Section 1A.