Fan motor SUZUKI SWIFT 2005 2.G Service Owner's Guide

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A/C System Inspection at ECMS7RS0B7214004
Voltage Check
When checking voltage at ECM connector terminals related to A/C system, refer to “DTC P2101: Throttle Actuator
Control Motor Circuit Range / Performance in Section 1A”.
0.40 – 0.45
(4.0 – 4.5)
(57 – 64)
2.0 – 2.5
(20 – 25)
(285 – 355) High pressure reading on
both low and high
pressure sides.
Overcharged A/C
system.
Adjust refrigerant to
specified amount.
Faulty condenser
cooling operation. Clean condenser.
Faulty radiator cooling
fan operation. Inspect and repair
radiator cooling fan.
High pressure reading on
both low and high
pressure sides.
Low pressure side tubing
is not cold when touched. Presence of air in A/C
system
(Improperly
evacuated).Replace receiver/
dryer.
Inspect quantity of
compressor oil and
presence of
contaminants in oil.
Evacuate system and
recharge with fresh
refrigerant.
0.45 – 0.55
(4.5 – 5.5)
(64 – 78) High pressure reading on
both low and high
pressure sides.
Large amount of frost or
dew on the low pressure
side tubing.Faulty expansion
valve.
Refrigerant flow is not
regulated properly.
Replace expansion
valve.
Condition
Possible cause Correction
Manifold gauge MPa (kg/cm
2) (psi)
Detail
Lo Hi

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Auto A/C Electronic Control Input / Output Table
HVAC Control Module Operation DescriptionS7RS0B7221002
Temperature Control
HVAC control module calculates the target temperature
control door position based on signals from the
temperature selector, inside air temperature sensor,
outside air temperature sensor and sunload sensor and
controls the temperature control actuator so that the
current position of the temperature control door matches
its target position.
Fan Speed Control
HVAC control module calculates the target blower fan
speed based on signals from the temperature selector,
inside air temperature sensor, outside air temperature
sensor and sunload sensor, compares it with the current
blower fan speed inputted from the blower motor
controller to control the current blower fan speed to the
target level.
Air Flow Outlet Control
HVAC control module calculates the target temperature
control door position based on signals from the
temperature selector, inside air temperature sensor,
outside air temperature sensor and sunload sensor.
Using thus obtained target temperature control door
position, it further calculates the target air flow control
door position and controls the ai r flow control actuator so
that the current air flow c ontrol door position becomes
the target position. Air Intake Position Control
HVAC control module determines the position of the air
intake control door based on signals from the
temperature selector, inside air temperature sensor,
outside air temperature sensor and sunload sensor and
selects any of the following positions by controlling the
position of the air intake control door.
• FRESH position (FRE)
• RECIRCULATION position (REC)
• MIX position (MIX)
Refrigerant Type IdentificationS7RS0B7221003
Refer to “Refrigerant Type Identification”.
Sub-Cool A/C System DescriptionS7RS0B7221005
Refer to “Sub-Cool A/C System Description”.
A/C Operation DescriptionS7RS0B7221006
Refer to “A/C Operation Description”.
Sunload sensor
Outside air temperature sensor Evaporator temperature sensor
A/C refrigerant pressure sensor
Temperature selector
MODE (air flow) selector
Blower speed selector
Air intake selector
AUTO switch
A/C switch
Compressor
Blower motor controller
Temperature control actuator
Air flow control actuator
Air intake control actuator
BCM
ECM
Data link connector
HVAC control module
CPU
ECT sensor
Inside air temperature sensor
VSS
*
I5RS0C722002-02
*: CAN communication

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Diagnostic Information and Procedures
A/C System Symptom DiagnosisS7RS0B7224001
4. Rear defogger relay 15. Evaporator temperature sensor 26. Radiator cooling fan relay No.1 37. Rear defogger switch
5. Rear defogger 16. Sunload sensor 27. Radiator cooling fan relay No.2 38. To BCM
6. Blower motor relay 17. Junction block assembly 28. Radiator cooling fan relay No.3 39. To ECM
7. Blower motor 18. ECM 29. Information display 40. To main relay
8. Blower motor controller 19. ECT sensor 30. Lighting switch 41. To main fuse
9. DLC 20. Radiator cooling fan motor 31. A/C switch 42. Back-light
10. Air intake actuator 21. Compressor relay 32. MODE (air flow) selector 43. Defroster indicator 11. Air flow control actuator 22. Compressor 33. Air intake selector 44. Rear defogger indicator
Condition Possible cause Correction / Reference Item
No cool air comes out (A/
C system does not
operate) No refrigerant
Perform recovery, evacuation and charge
referring to “Operation Procedure for
Refrigerant Charge”.
Fuse blown Check related fuses, and then check for short
circuit to ground.
A/C switch faulty Check A/C switch referring to “Inspection of
HVAC Control Module and Its Circuit”.
Evaporator temperature sensor faulty Check evaporator temperature sensor
referring to “Evaporator Thermistor
(Evaporator Temperature Sensor) Inspection”.
A/C refrigerant pressure sensor faulty Check A/C refrigerant pressure sensor
referring to “A/C Refrigerant Pressure Sensor
and Its Circuit Inspection”.
Wiring or grounding faulty Repair as necessary.
ECT sensor faulty Check ECT sensor referring to “ECT Sensor
Inspection in Section 1C”.
ECM faulty Check ECM referring to “A/C System
Inspection at ECM”.
HVAC control module faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
Magnet clutch faulty Check magnet clutch. Referring to “Magnet
Clutch Inspection”.
Compressor drive belt loosened or
broken Adjust or replace drive belt.
Compressor faulty Check compressor.
Compressor relay faulty Check compressor relay referring to
“Compressor Relay Inspection”.
Temperature selector, blower speed
selector, and/or air flow selector faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
BCM faulty Check BCM referring to “Inspection of BCM
and its Circuits in Section 10B”.

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No cool air comes out
(radiator cooling fan
motor does not operate)Fuse blown
Check related fuses, and then check for short
circuit to ground.
Wiring or grounding faulty Repair as necessary.
Radiator cooling fan motor relay faulty Check radiator cooling fan motor relay
referring to “Radiator Cooling Fan Relay
Inspection in Section 1F”.
Radiator cooling fan motor faulty Check radiator cooling fan motor referring to
“Radiator Cooling Fan Motor On-Vehicle
Inspection in Section 1F”.
ECM faulty Check ECM referring to “A/C System
Inspection at ECM”.
HVAC control module faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
No cool air comes out
(blower motor does not
operate) Fuse blown
Check related fuses, and then check for short
circuit to ground.
Blower motor controller faulty Check blower motor controller referring to
“Blower Motor Controller Inspection”.
Blower speed selector faulty Check blower speed selector referring to
“Inspection of HVAC Control Module and Its
Circuit”.
HVAC control module faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
Wiring or grounding faulty Repair as necessary.
Blower motor faulty Check blower motor referring to “Blower Motor
Inspection in Section 7A”.
Blower motor relay faulty Check blower motor relay referring to “Blower
Motor Relay Inspection in Section 7A”.
Condition Possible cause Correction / Reference Item

Downloaded from www.Manualslib.com manuals search engine 7B-46 Air Conditioning System: Automatic Type
Scan Tool DataS7RS0B7224007
As the data values given in the following are standard values estimated on the basis of values obtained from the
normally operation vehicles by using a scan tool, use them as reference values. Even when the vehicles are in good
condition, there may be cases where the checked values do not fall within each specifies data range. Therefore,
judgement as abnormal should not be ma de by checking with these data alone.
Scan Tool Data Condition Normal Condition / Reference
Va l u e
) TEMP CONT
SWITCH Each reference value is relative to the position of
temperature selector of HVAC control module. Max Cool, 18.5
°C (65 ° F), 19 °C (66
° C) – 31 °C (88 °F), 31.5 °C (89 °F),
Max Hot
) CABIN
TEMPERATURE Reference value is relative to in-car temperature. –6.5
°C – 57.25 ° C
(20.3 °F – 135.05 °F)
) OUTSIDE AIR TEMP Reference value is relative to outside air
temperature. –23.3
°C – 65.95 °C
(–9.94 °F – 150.71 °F)
) EVAPORATOR
TEMP Reference value is relative to temperature of
evaporator. –29.7
°C – 59.55 °C
(–21.46 °F – 139.19 °F)
) COOLANT TEMP At specified id le speed after warming up. 80 °C – 100 °C (176 ° F – 212 ° F)
) SUN LOAD Reference value depends on the situation. 0 W/m
2 – 4447.8 W/m2
)MODE CONT
SWITCH Each reference value is relative to the position of air
flow selector of HVAC control module.
AUTO, FACE, B/L, FOOT, D/F, DER
) FAN CONT SWITCH Each reference value is relative to the position of
blower speed selector of HVAC control module. AUTO, OFF, 1st, 2nd – 7th, 8th
) FAN DESIRED VOLT Reference value is relative to the position of blower
speed selector of HVAC control module. 0 – 16.0 V
) AIR MIX POS SEN Reference value is relative to the position of
temperature selector of HVAC control module. about 2.0 V (Max Hot)
about 4.0 V (Max Cool)
) MODE POS SENSOR Reference value is relative to the position of air flow
selector of HVAC control module. about 1.6 V (DEF)
about 4.0 V (VENT)
) A/C CONT SIG A/C system is ON. ON
A/C system is OFF. OFF
) BLOWER LOAD SIG Position of blower speed selector is 1st position or
more.
ON
Position of blower speed selector is OFF position. OFF
) AIR INTAKE MODE Fresh air (FRE) mode is activated. FRE
Recirculation air (REC) mode is activated. REC
AUTO mode is activated. AUTO
) REFRIGERANT
PRESSURE Engine running. A/C ON (A/C is operating)
at ambient temperature:
30
°C (86 °F) 1470 – 1770 kPa For more details,
refer to pressure of high pressure
gauge under “A/C System Performance Inspection”
A/C OFF (A/C is not
operating) at ambient
temperature: 30 °C (86
° F) and engine coolant
temperature: 90 ° – 100
° C 600 – 1000 kPa After longer than 10
min from A/C switch turned off
) A/C COMP CLUTCH Engine running. A/C switch and blower
motor switch turned ON
ON
A/C switch and/or blower
motor switch turned OFF OFF
) DFR INDICATOR Defroster indicator
lamp is lighted. ON
Defroster indicator la mp is not lighted. OFF
) VEHICLE SPEED At stop. OFF
0 km/h (0 mph)

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Scan Tool Data Definitions
TEMP CONT SWITCH (TEMPERATURE SELECTOR): Position of temperature control
selector of HVAC control module
CABIN TEMPERATURE: In-car temperature detected
by inside air temperature sensor installed in HVAC
control module
OUTSIDE AIR TEMP (OUTSIDE AIR TEMPERATURE): Outside air temperature
detected by outside air temperature sensor installed
in front bumper member
EVAPORATOR TEMP (EVAPORATOR TEMPERATURE): Temperature of air passed
through evaporator
COOLANT TEMP (ENGINE COOLANT TEMPERATURE): Engine coolant temperature
detected by engine coolant temperature sensor
SUN LOAD: Amount of sunlight detected by sunload
sensor installed on the driver side on the dashboard
MODE CONT SWITCH (MODE (AIR FLOW) SELECTOR): Position of air flow selector of HVAC
control module
FAN CONT SWITCH (BLOWER SPEED SELECTOR): Position of blower speed selector of HVAC control
module
FAN DESIRED VOLT: Voltage for blower motor AIR MIX POS SEN (TEMPERATURE CONTROL
ACTUATOR POSITI ON SENSOR): Input signal
from position sensor in temperature control actuator
MODE POS SENSOR (AIR FLOW CONTROL ACTUATOR POSITI ON SENSOR): Input signal
from position sensor in air flow control actuator
A/C CONT SIG (A/C SWITCH SIGNAL, ON or OFF): State of A/C switch
BLOWER LOAD SIG (BLO WER FAN LOAD SIGNAL,
ON or OFF): ON: Position of blower speed selector
is 1st position or more / OFF: Position of blower
speed selector is OFF position.
AIR INTAKE MODE (AUTO, FRE or REC): State of air
intake mode
REFRIGERANT PRESSURE (A/C REFRIGERANT ABSOLUTE PRESSURE): This parameter
indicates A/C refrigerant absolute pressure
calculated by ECM
A/C COMP CLUTCH (A/C COMPRESSOR MAGNET CLUTCH, ON or OFF): This parameter indicates
the state of the A/C switch
DFR INDICATOR (DEFROSTER INDICATOR LAMP, ON or OFF): State of defroster indicator lamp
VEHICLE SPEED: It is computed based on pulse
signals from vehicle speed sensor
Air Conditioning System CheckS7RS0B7224008
Step Action YesNo
1 Customer complaint analysis
1) Perform )”Customer complaint analysis”.
Was customer complaint analysis performed? Go to Step 2.
Perform customer
complaint analysis.
2 Visual inspection
1) Perform )“Visual inspection”.
Is there any faulty condition? Repair or replace
malfunction part.
Go to Step 3.
3 DTC check
1) Perform )“DTC check”.
Is there any DTC code? Go to Step 4.
Go to Step 5.
4 Troubleshooting malfunction
1) Perform ) “Troubleshooting malfunction”.
Is there any faulty condition? Repair or replace
malfunction part, and go
to Step 7.
Go to Step 5.
5 Perform A/C system symptom diagnosis
1) Inspect and repair referri ng to “A/C System Symptom
Diagnosis”.
Is there any faulty condition? Repair or replace
malfunction part, and go
to Step 7.
Go to Step 6.
6 Check for intermittent problem
1) Check for intermittent troubles referring to “Intermittent
and Poor Connection Inspection in Section 00”.
Is there any faulty condition? Repair or replace
malfunction part, and go
to Step 7.
Go to Step 7.
7 Final confirmation test
1) Perform ) “Final confirmation test”.
Is there any malfunction code? Go to Step 4.
End.

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ECM Voltage Values Table for Relation of A/C Control
Repair Instructions
Operation Procedure for Refrigerant ChargeS7RS0B7226001
Refer to “Operation Procedure for Refrigerant Charge”.Terminal Wire Color Circuit Normal Value Condition
C37-14 GRY/RED Output of 5 V power
source 4.5 – 5.5 V Ignition switch turned ON
C37-15 BLK Ground for ECM Below 0.3 V Ignition switch turned ON
C37-24 LT GRN Engine coolant temp.
(ETC) sensor signal 3.3 – 3.8 V Ignition switch turned ON, ECT at 0
°C (32 ° F)
1.38 – 1.72 V Ignition switch turned ON, ECT at 50 °C (122 °F)
C37-30 BLK Ground for ECM Below 0.3 V Ignition switch turned ON
C37-55 ORN Ground for sensors Below 0.3 V Ignition switch turned ON
C37-58 BLK/ORN Ground for ECM Below 0.3 V Ignition switch turned ON E23-1 BLK/RED Main power supply 10 – 14 V Ignition switch turned ON
E23-3 RED CAN (high)
communication line
(active high signal)
for BCM and
combination meterRefer to “DTC P2101: Throttle Actu
ator Control Motor Circuit Range /
Performance in Section 1A”
E23-16 BLK/RED Main power supply 10 – 14 V Ignition switch turned ON
E23-18 WHT CAN (low)
communication line
(active low signal) for
BCM and
combination meterRefer to “DTC P2101: Throttle Actu
ator Control Motor Circuit Range /
Performance in Section 1A”
E23-19 BLU/WHT Electric load signal
for blower motor 10 – 14 V
Ignition switch turned ON, blower speed selector
OFF or between 1st and 5th position
0 – 1 V Ignition switch turned ON, blower speed selector
between 6th and HIGH position
E23-46 LT GRN Radiator fan relay
No.1 output 10 – 14 V
Ignition switch turned ON, engine coolant temp.:
below 95
°C (203 ° F), or A/C refrigerant pressure:
below 600 kPa (87 psi).
0 – 2 V Ignition switch turned ON, engine coolant temp.:
97.5
°C (207.5 °F) or higher, or A/C refrigerant
pressure: 1100 kPa (159.5 psi) or higher.
E23-47 GRY A/C compressor relay
output 10 – 14 V Engine running, A/C request signal high input
0 – 1 V Engine running, A/C request signal low input
E23-48 GRN Radiator fan relay
No.2 and No.3 output 10 – 14 V
Ignition switch turned ON, engine coolant temp.:
below 100
°C (212 °F), or A/C refrigerant
pressure: below 1200 kPa (174 psi).
0 – 2 V Ignition switch turned ON, engine coolant temp.:
102.5
°C (216.5 ° F) or higher, or A/C refrigerant
pressure: 1500 kPa (217.5 psi) or higher.
E23-55 RED A/C refrigerant
pressure sensor
signal 1.46 – 1.71 V
Engine running, A/C refrigerant pressure at 0.8
MPa (8.0 kg/cm
2) (A/C refrigerant pressure
measured by manifold gauge)
2.55 – 2.80 V Engine running, A/C refrigerant pressure at 1.6
MPa (16.0 kg/cm
2) (A/C refrigerant pressure
measured by manifold gauge)
E23-60 BRN/WHT Main power supply
relay output 10 – 14 V Ignition switch turned OFF
0 – 2 V Ignition switch turned ON

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-14
E: Main harness (RHD)
E: Main harness
56
E06E12
E03or
E85
E07
E09
E08
E13
E10
E11E05 E04
E01 E02
E19
7
22
E34E31
E32
E57
E24
(TO C36)
E33
E36
E35
E30
E29
E28
E20
E21
E22
E27
E26
E23
E25E17E56
E18
E14 E15
E55
E
I7RS0B910902-02
No./Color
Connective position No./ColorConnective position
E01/GRY Windshield wiper motor E22/N Front position light (L)
E02/GRY Brake fluid level switch E23/GRY ECM
E03/BLK ABS control module E24/N Engine Harness (To C36)
E04/BLK A/C pressure sensor E25/BLK Wheel speed sensor (FL)
E05/BLK Wheel speed sensor (FR) E26/N Main fuse box
E06/N Side turn signal light (R) E27/BLK Main fuse box
E07/N Front position light (R) E28/BLK Radiator fan relay #1
E08/BLK Head light (R) E29/BLK Radiator fan relay #2
E09/GRY Front turn signal light (R) E30/BLK Radiator fan relay #3
E10/GRN Rear washer motor E31/BLK Starting motor relay
E11/BLU Windshield washer motor E32/BLK Main relay
E12/BLK (IF EQPD) Front fog light (R)
E33/BLK A/T relay
E13/YEL Forward sensor E34/BLK (IF
EQPD) Front fog light relay
E14/BLK Outside air temperature sensor E35/BLK Fuel pump relay
E15/BLK Horn E36/BLK A/C compressor relay
E17/BLK Radiator fan motor E55/- Weld splice
E18/BLK (IF EQPD) Front fog light (L) E56/BLK
(M16A
engine) Throttle actuator control relay
E19/N Side turn signal light (L) E57/BLK Diagnosis connector #1
E20/GRY Front turn signal light (L) E85/BLK (IF
EQPD) ESP
® control module
E21/BLK Headlight (R)

Downloaded from www.Manualslib.com manuals search engine 9A-15 Wiring Systems:
E: Main harness (LHD)
E: Main harness
56
E06E12
E
E03
E07
E09
E59E08
E13
E10
E11E05 E04
E01
E02E197
E34
E31
E32
E24
(TO C36)
E33
E36
E35
E30
E29
E28
E20
E21
E22
E58
E27
E26
E23
E25E17
E18
E14 E15
E55
I7RS0B910903-02
No./Color
Connective position No./ColorConnective position
E01/GRY Windshield wiper motor E21/BLK Headlight (R)
E02/BRN Brake fluid level switch E22/N Front position light (L)
E03/BLK ABS control module E23/GRY ECM
E04/BLK A/C pressure sensor E24/N Engine Harness (To C36)
E05/BLK Wheel speed sensor (FR) E25/BLK Wheel speed sensor (FL)
E06/N Side turn signal light (R) E26/N Main fuse box
E07/N Front position light (R) E27/BLK Main fuse box
E08/BLK Head light (R) E28/BLK Radiator fan relay #1
E09/GRY Front turn signal light (R) E29/BLK Radiator fan relay #2
E10/GRN Rear washer motor E30/BLK Radiator fan relay #3
E11/BLU Windshield washer motor E31/BLK Starting motor relay
E12/BLK (IF EQPD) Front fog light (R)
E32/BLK Main relay
E13/YEL Forward sensor E33/BLK A/T relay
E14/BLK Outside air temperature sensor E34/BLK (IF
EQPD) Front fog light relay
E15/BLK Horn E35/BLK Fuel pump relay
E17/BLK Radiator fan motor E36/BLK A/C compressor relay
E18/BLK (IF
EQPD) Front fog light (L)
E55/- Weld splice
E19/N Side turn signal light (L) E58/GRY (IF
EQPD) Headlight beam leveling actuator (L)
E20/GRY Front turn signal light (L) E59/GRY (IF
EQPD) Headlight beam leveling actuator (R)

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-34
Individual Circuit Fuse Box No. 1S7RS0B910D005
456789101112
131415161718192021
USE THE DESINGNATED FUSES
AND RELAYS ONLY.
Relay #1
"A-4"
E28
Relay #2
"A-4"
E29
Relay #3
"A-4"
E30
"A-5"
E35
RelayRelay
"D-3"
E34
Compressor
Relay"E-1"
E36
A/T relay
"A-6"
E33
Main relay
"A-5"
E32
Starting motor relay
"A-1"
E31
Throttle actuatorcontrol relay
"A-5"
E56
IF EQPDM16A engineI7RS0B910939-01
No. Fuse Description on the cover Protected circuit
30 A HTR FAN Blower motor relay
15 A FIMain relay
10 A A/C CPRSR A/C compressor relay
15 A AT ETM A/T relay
15 A STOP LAMP Brake light switch
30 A ABS MOT ABS control module
ESP
® control module
30 A ST MOT Starting motor relay
50 A MTA BLANK
50 A EPS Power steering control module
30 A IG ACC IG switch
30 A RDTR FAN Radiator fan relay #1
Radiator fan relay #2
BLANK BLANK BLANK
30 A ABS SOL ABS control module
ESP
® control module
BLANK BLANK BLANK 15 A THR MOT Throttle actuator control relay
15 A FR FOG Front fog light relay
15 A H/L L Headlight (L)
15 A H/L R Headlight (R)