2000 SUZUKI SWIFT sensor

0A-12 GENERAL INFORMATION
 When installing the wiring harness, fix it with clamps so
that no slack is left.
 When installing vehicle parts, be careful so that the wir-
ing harness is not interfered with or caught by any other
part.
 To avoid damage to the harness, protect its part which
may contact against a part forming a sharp angle by
winding tape or the like around it.
 Be careful not to touch the electrical terminals of parts
which use microcomputers (e.g. electronic control unit
like as ECM, PCM, P/S controller, etc). The static elec-
tricity from your body can damage these parts.
 Never connect any tester (voltmeter, ohmmeter, or what-
ever) to electronic control unit when its coupler is dis-
connected. Attempt to do it may cause damage to it.
 Never connect an ohmmeter to electronic control unit
with its coupler connected to it. Attempt to do it may
cause damage to electronic control unit and sensors.
Be sure to use a specified voltmeter/ohmmeter. Other-
wise, accurate measurements may not be obtained or
personal injury may result. If not specified, use a volt-
meter with high impedance (M
Ω/
Ω/Ω/ Ω/V minimum) or a digital
type voltmeter.

0A-22 GENERAL INFORMATION
ABBREVIATIONS AND SYMBOLS MAY BE USED IN THIS MANUAL
ABBREVIATIONS
AABS Anti-lock Brake System
EEFE Heater Early Fuel Evaporation Heater
(Positive Temperature Coefficient,
PTC Heater) ATDC After Top Dead Center
API American Petroleum Institute
ATF Automatic Transmission Fluid EPS Electronic Power Steering
ALR Automatic Locking Retractor EVAP Evaporative Emission
AC Alternating Current EVAP Canister Evaporative Emission Canister
(Charcoal Canister)
A/T Automatic TransmissionF
4WD 4 Wheel Drive
A/C Air Conditioning
GGEN Generator
ABDC After Bottom Dead Center GND Ground
A/F Air Fuel Mixture Ratio
HHC Hydrocarbons
A-ELR Automatic-Emergency Locking
RetractorHO2S Heated Oxygen Sensor
IIAC Valve Idle Air Control Valve (Idle Speed
Control Solenoid Valve ISC Sole-
noid Valve)
BB+ Battery Positive Voltage
BTDC Before Top Dead Center
BBDC Before Bottom Dead Center IAT Sensor Intake Air Temperature Sensor
(Air temperature Sensor, ATS)
CCKT Circuit
CKP sensor Crankshaft Position Sensor ICM Immobilizer Control Module
CMP sensor Camshaft Position Sensor IG Ignition
CO Carbon Monoxide ISC Actuator Idle Speed Control Actuator
CPP switch Clutch Pedal Position Switch
(Clutch Switch, Clutch Start
Switch)LLH Left Hand
LSPV Load Sensing Proportioning Valve
CPU Central Processing Unit
MMAF Sensor Mass Air Flow Sensor (Air Flow
Sensor, AFS, Air Flow Meter,
AFM) CRS Child Restraint System
DDC Direct Current
DLC Data Link Connector (Assembly
Line Diag. Link, ALDL, Serial Data
Link, SDL)MAP Sensor Manifold Absolute Pressure Sen-
sor (Pressure Sensor, PS)
Max Maximum
DOHC Double Over Head Camshaft MFI Multiport Fuel Injection
(Multipoint Fuel Injection)
DOJ Double Offset Joint
DRL Daytime Running Light MIN Minimum
DTC Diagnostic Trouble Code (Diag-
nostic Code)MIL Malfunction Indicator Lamp
(“SERVICE ENGINE SOON”
Light)
EEBCM Electronic Brake Control Module,
ABS Control Module M/T Manual Transmission
EBD Electronic Brake Force Distribu-
tionNNOx Nitrogen Oxides
ECM Engine Control Module
OOBD On-Board Diagnostic System
(Self-Diagnosis Function)
ECT sensor Engine Coolant Temperature Sen-
sor (Water Temp. Sensor, WTS)
O/D Overdrive
EGR Exhaust Gas Recirculation OHC Over Head Camshaft
EGRT sensor EGR Temperature Sensor (Recir-
culated Exhaust Gas Temp. Sen-
sor, REGTS)O2S Oxygen Sensor
PPNP Park/Neutral Position
P/S Power Steering

GENERAL INFORMATION 0A-23
PPSP Switch Power Steering Pressure Switch
(P/S Pressure Switch)
PCM Powertrain Control Module
PCV Positive Crankcase Ventilation
R
RH Right Hand
SSAE Society of Automotive Engineers
SDM Sensing and Diagnostic Module
(Air bag controller, Air bag con-
trol module)
SFI Sequential Multiport Fuel Injec-
tion
SOHC Single over Head Camshaft
TTBI Throttle Body Fuel Injection
(Single-Point Fuel Injection, SPI)
TCC Torque Converter Clutch
TCM Transmission Control Module
(A/T Controller, A/T Control
Module)
TP Sensor Throttle Position Sensor
TVV Thermal Vacuum Valve (Ther-
mal Vacuum Switching Valve,
TVSV, Bimetal Vacuum Switch-
ing Valve, BVSV)
TWC Three Way Catalytic Converter
(Three Way Catalyst)
2WD 2 Wheel Drive
VVIN Vehicle Identification Number
VSS Vehicle Speed Sensor
WWU-OC Warm Up Oxidation Catalytic
Converter
WU-TWC Warm Up Three Way Catalytic
Converter

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

1B-16 AIR CONDITIONING (OPTIONAL)
ELECTRICAL DIAGNOSIS
WIRING DIAGRAM
1. Blower fan motor 6. Radiator/condenser cooling fan relay No.2 11. Ignition switch 16. Main fuse box
2. Blower fan motor resistor 7. Radiator/condenser cooling fan relay No.3 12. A/C evaporator temperature sensor 17. Generator
3. Blower fan switch and A/C switch 8. Radiator/condenser cooling fan motor 13. ECT sensor 18. Compressor
4. A/C refrigerant pressure switch 9. Compressor thermal switch 14. Lighting switch
5. Radiator/condenser cooling fan relay No.1 10. Main relay 15. Circuit fuse box

1B-18 AIR CONDITIONING (OPTIONAL)
System Circuit
Terminal arrangement of ECM coupler (Viewed from harness side)
1. Blower fan motor 8. Main relay A. To “HTR” fuse (25 A) in circuit fuse box
2. Blower fan switch 9. Radiator/condenser cooling fan motor relay No.1 B. To main fuse (15 A)
3. A/C switch 10. Radiator/condenser cooling fan motor relay No.2 C. To main fuse (30 A)
4. A/C refrigerant pressure switch 11. Radiator/condenser cooling fan motor relay No.3
5. Compressor 12. Radiator/condenser cooling fan motor
6. A/C evaporator temperature sensor 13. Engine earth
7. ECT sensor 14. ECM