2000 SUZUKI SWIFT temperature

HEATER AND VENTILATION 1A-3
DIAGNOSIS
DIAGNOSIS TABLE
Condition Possible Cause Correction
Heater blower fan
motor won’t work even
when its switch is
operating position.Fuse blown Check “HEATER” fuse, main heater
fuse and check for short circuit to
ground.
Blower main relay faulty Check blower main relay.
Blower fan motor resistor faulty Check resistor.
Blower fan motor switch faulty Check blower fan switch.
Blower fan motor faulty Replace motor.
Wiring or grounding faulty Repair as necessary.
Heater blower fan
won’t work when its
switch is maximum
position.Blower maximum relay faulty Check blower maximum relay.
Blower fan motor switch faulty Check blower fan switch.
Wiring or grounding faulty Check wiring, grounding and repair
as necessary.
Incorrect temperature
output.Control cables broken or binding Check cables.
Temperature control lever faulty Check control lever.
Position of control cable clamp is faulty Check and adjustment.
Temperature door assembly broken Repair temperature door assembly.
Air ducts clogged Repair air ducts.
Heater core leaking or clogged Replace core.
Heater hoses leaking or clogged Replace hoses.
Thermostat faulty Check thermostat by referring to
Section 6B.
When mode control
lever is changed, air
outlet port is not
changed or lever posi-
tion disagree with air
outlet port.Control cable broken or binding Check cable.
Mode control lever faulty Check control lever.
Position of control cable clamp is faulty Check and adjust clamp posi-
tion.Check and adjustment.
Air damper broken Repair damper.
Air ducts leaking or clogged Repair air ducts.

HEATER AND VENTILATION 1A-5
ON-VEHICLE SERVICE
HEATER UNIT
1. Heater core 4. Temperature door assembly 7. Temperature lever assembly Do not reuse
2. Blower fan motor assembly 5. Air outlet control door assembly 8. Packing
3. Blower fan motor resistor 6. Air outlet control lever assembly 9. Demistor air outlet case

HEATER AND VENTILATION 1A-9
HEATER CONTROL ASSEMBLY
REMOVAL
1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover.
3) Remove heater control knob (1), center upper garnish (2),
center lower garnish (3) and glove box.
4) Disconnect air outlet control (3), temperature control (2) and
fresh air control (1) cables.
5) Remove heater control assembly (1), and then disconnect
blower fan switch connector (2) after unlock locking part (3)
as shown.
1. Heater control assembly 3. A/C switch LED (if equipped) 5. Fresh air control cable 7. Temperature control cable
2. A/C switch knob (if equipped) 4. Bulb 6. Air outlet control cable 8. Heater control knob

1A-10 HEATER AND VENTILATION
INSTALLATION
1) Reverse removal procedure for installation.
2) Adjust the following items.
a) Move air outlet control dial (1), temperature control dial (2)
and fresh air control lever (3) fully in arrow direction as
shown in figure.
b) Push air outlet lever (4), temperature lever (5) and door link
(6) fully in arrow direction and fix air outlet control cable (7),
temperature control cable (8) and fresh air control cable (9)
with clamp in position as shown in figure.
[A] : For LH model
[B] : For RH model
NOTE:
After installing control cables, be sure that control levers
move smoothly and stop at proper position.
[A] : For LH model
[B] : For RH model

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-2 AIR CONDITIONING (OPTIONAL)
REMOVING MANIFOLD GAUGE SET ...... 1B-26
LEAK TEST................................................ 1B-26
LIQUID LEAK DETECTORS .................. 1B-26
ON-VEHICLE SERVICE ................................ 1B-27
SERVICE PRECAUTION........................... 1B-27
REFRIGERANT LINE ............................ 1B-27
HANDLING REFRIGERANT HFC-134a
(R-134a) ................................................. 1B-28
REFRIGERANT RECOVERY ................ 1B-28
REFRIGERANT CHARGE ..................... 1B-28
CONDENSER ASSEMBLY........................ 1B-28
RECEIVER/DRYER ................................... 1B-30
RADIATOR/CONDENSER COOLING FAN
MOTOR...................................................... 1B-31COOLING UNIT (EVAPORATOR) ............ 1B-32
A/C EVAPORATOR TEMPERATURE
SENSOR.................................................... 1B-34
EXPANSION VALVE ................................. 1B-34
A/C REFRIGERANT PRESSURE
SWITCH..................................................... 1B-35
A/C SWITCH.............................................. 1B-36
RADIATOR/CONDENSER COOLING FAN
MOTOR RELAY No.1, No.2 and No.3 ....... 1B-36
COMPRESSOR ......................................... 1B-36
MAGNET CLUTCH .................................... 1B-38
LIP TYPE SEAL ......................................... 1B-41
REQUIRED SERVICE MATERIAL ............... 1B-43
SPECIAL TOOL ............................................ 1B-44

AIR CONDITIONING (OPTIONAL) 1B-5
DIAGNOSIS
GENERAL DIAGNOSIS TABLE
Condition Possible Cause Correction
Cool air won’t come
out (A/C system won’t
operative)No refrigerant Perform recover, evacuation and charging.
Fuse blown Check fuses in circuit fuse and main fuse
boxes, and check short circuit to ground.
A/C switch faulty Check A/C switch.
Blower fan switch faulty Check blower fan switch referring to Sec-
tion 1A.
A/C evaporator temperature sensor
faultyCheck A/C evaporator temperature sen-
sor.
A/C refrigerant pressure switch faulty Check A/C refrigerant pressure switch.
Wiring or grounding faulty Repair as necessary.
ECT sensor faulty Check ECT sensor referring to Section
6E1.
ECM and its circuit faulty Check ECM and its circuit referring to Sec-
tion 6E1.
Cool air won’t come
out (A/C compressor
won’t operative)ECM faulty Check ECM and its circuit referring to Sec-
tion 6E1.
Magnet clutch faulty Check magnet clutch.
Compressor drive belt loosen or broken Adjust or replace drive belt.
Compressor faulty Check compressor.
Compressor thermal switch faulty Check compressor thermal switch
Cool air won’t come
out (A/C condenser
cooling fan motor
won’t operative)Fuse blown Check fuses in circuit fuse and main fuse
boxes, and check short circuit to ground.
Wiring or grounding faulty Repair as necessary.
Radiator/condenser cooling fan motor
relay faultyCheck radiator/condenser cooling fan
motor relay No.1, No.2 and No.3.
Radiator/condenser cooling fan motor
faultyCheck radiator/condenser cooling fan
motor.
ECM faulty Check ECM and its circuit referring to Sec-
tion 6E1.
Cool air won’t come
out (Blower fan motor
won’t operative)Fuse blown Check “HTR” fuse in circuit fuse box and
main fuses, and check short circuit to
ground.
Blower fan motor resistor faulty Check blower fan motor resistor to Section
1A.
Blower fan switch faulty Check blower fan switch referring to Sec-
tion 1A.
Wiring or grounding faulty Repair as necessary.
Blower fan motor faulty Check blower fan motor referring to Sec-
tion 1A.

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