2008 SUZUKI SWIFT engine symptom diagnosis

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-39
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”.

Downloaded from www.Manualslib.com manuals search engine 7B-42 Air Conditioning System: Automatic Type
Abnormal Noise Symptom Diagnosis of A/C
System
S7RS0B7224002
Refer to “Abnormal Noise Symptom Diagnosis of A/C
System”.
DTC CheckS7RS0B7224003
Using SUZUKI Scan Tool1) Turn ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector (DLC) (1) located on underside of instrument panel
at driver’s seat side.
Special tool
(A): SUZUKI scan tool 3) Light over sunload sensor vertically with an
incandescent lamp of approximately 100 W apart
from about 100 mm (3.94 in.).
NOTE
If sunload sensor is not lighted over with an
incandescent lamp, DTC B1504 is detected
even though there is not any malfunction.

4) Turn ignition switch to ON position.
5) Read DTC displayed on SUZUKI scan tool.
NOTE
To know how to use SUZUKI scan tool, refer
to operator’s manual for SUZUKI scan tool.

6) After completing the check, turn ignition switch to
OFF position and disconnect SUZUKI scan tool from
data link connector (DLC).
Cool air does not come
out only at high speed
Excessive amount of refrigerant
Check the amount of refrigerant.
A/C evaporator frosted Check A/C evaporator and evaporator
temperature sensor referring to “Evaporator
Inspection” and “Evaporator Thermistor
(Evaporator Temperature Sensor) Inspection”.
Insufficient air flow of
cooled air A/C evaporator clogged or frosted
Check A/C evaporator and evaporator
temperature sensor referring to “Evaporator
Inspection” and “Evaporator Thermistor
(Evaporator Temperature Sensor) Inspection”.
Air leaking from HVAC unit or air duct Repair as necessary.
Blower motor faulty Check blower motor referring to “Blower Motor
Inspection in Section 7A”.
Wiring or grounding faulty Repair as necessary.
Condition Possible cause Correction / Reference Item
(A)
1
I5RS0A722005-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-47
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.

Downloaded from www.Manualslib.com manuals search engine 7B-48 Air Conditioning System: Automatic Type
Description for Each Step
Step 1. Customer complaint analysis
Talk to customer, and then record details of the problem.
Customer questionnaire (Example)
NOTE
The from is a standard sample. It should be modified according to conditions characteristic of each
market.

Step 2. Visual inspection
As a preliminary step, be sure to perform visual check of th e items that support proper function of the air conditioning
referring to “Visual Inspection”.
Step 3. DTC check
Check DTC referring to “DTC Check”.
Step 4. Troubleshooting malfunction
Based on the DTC, perform an applicable DTC diagnostic flow and locate the cause of the trouble, namely in a sensor,
wire harness, connector, actuat or, HVAC control module or other part and repair faulty parts.
Step 5. A/C system symptom diagnosis
Check any part or system suspected to be a possible cause referring to “A/C System Symptom Diagnosis”.
Step 6. Check for intermittent problem
Check any part where an intermittent trouble is easy to oc cur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connection Inspection in Sect ion 00” and related circuit of trouble cord recorded.
I4RH01722014-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-105
4) Connect passenger air bag (inflator) module connector (1) securely as shown in figure.
a) Connect connector.
b) Lock connector with lock button (2).
5) Enable air bag system. Refer to “Enabling Air Bag System”.
Passenger Air Bag (Inflator) Module InspectionS7RS0B8206008
WARNING!
• Never measure resistance of passenger air bag (inflator) module or disassemble it.
Otherwise personal injury may result.
• Never attempt to disassemble or repair the passenger air bag (inflator) module. If any
abnormality is found, be sure to replace it
with new one as an assembly.
• Be sure to read “Precautions on Service and Diagnosis of Air Bag System”,
“Precautions on Handling and Storage of
Air Bag System Components” and
“Precautions on Disposal of Air Bag and
Seat Belt Pretensioner” before starting to
work and observe every precaution during
work. Neglecting them may result in
personal injury or undeployment of the air
bag when necessary.

CAUTION!
If air bag (Inflator) module was dropped from
a height of 90 cm (3 ft) or more, it should be
replaced.

Check air bag (inflator) module appearance visually for
the following symptoms and if any one of them is found,
replace with a new one.
• Air bag has deployed.
• Wire harness or connector is damaged.
• Air bag (inflator) module is damaged or a strong impact was applied to it.
• Bend or deformity of air bag (inflator) module bracket.
Side-Air Bag (Inflator) Module Removal and
Installation
S7RS0B8206009
WARNING!
• Never attempt to disassemble or repair the side-air bag (inflator) module. If any
abnormality is found, be sure to replace it
with new one as an assembly.
• Be sure to read “Precautions on Service and Diagnosis of Air Bag System”,
“Precautions on Handling and Storage of
Air Bag System Components” and
“Precautions on Disposal of Air Bag and
Seat Belt Pretensioner” before starting to
work and observe every precaution during
work. Neglecting them may result in
personal injury or undeployment of the air
bag when necessary.

Removal
1) Disable air bag system. Re fer to “Disabling Air Bag
System”.
2) Roll up the seat surface of the seat back.
3) Remove sleeve lock nut (1) from seat back (2).
1
2
a)
b)
I4RS0A820066-01
I3RH0A820071-01
1
2
I4RS0A820067-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-107
Side-Air Bag (Inflator) InspectionS7RS0B8206010
WARNING!
• Never attempt to disassemble or repair the side-air bag (inflator) module. If any
abnormality is found, be sure to replace it
with new one as an assembly.
• Be sure to read “Precautions on Service and Diagnosis of Air Bag System” before
starting to work and observe every
precaution during work. Neglecting them
may result in personal injury or
undeployment of the air bag when
necessary.

CAUTION!
If air bag (inflator) module was dropped from
a height of 90 cm (3 ft) or more, it should be
replaced.

Check air bag (inflator) module appearance visually for
the following symptoms and if any one of them is found,
replace with a new one.
• Air bag has deployed.
• There is a crack in trim cover (pad surface).
• Wire harness or connector is damaged.
• Air bag (inflator) module is damaged or a strong impact was applied to it.
• Bend or deformity of air bag (inflator) module bracket.
Side Curtain-Air Bag (Inflator) Module Removal
and Installation
S7RS0B8206011
WARNING!
• Never attempt to disassemble or repair the side curtain-air bag (inflator) module. If any
abnormality is found, be sure to replace it
with new one as an assembly.
• Be sure to read “Precautions on Service and Diagnosis of Air Bag System”,
“Precautions on Handling and Storage of
Air Bag System Components” and
“Precautions on Disposal of Air Bag and
Seat Belt Pretensioner” before starting to
work and observe every precaution during
work. Neglecting them may result in
personal injury or undeployment of the air
bag when necessary.

Removal
1) Disable air bag system. Re fer to “Disabling Air Bag
System”.
2) Remove head lining referring to “Head Lining Removal and Installati on in Section 9H”.
3) Disconnect side curtain-air bag (inflator) module connector (1) as shown in figure.
a) Unlock lock button (2).
b) With lock button unlocked, disconnect connector.
I4RS0A820075-02
2
1 a)
b)
I4RS0A820077-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-109
Side Curtain-Air Bag (Inflator) Module
Inspection
S7RS0B8206012
WARNING!
• Never measure resistance of side curtain-air bag (inflator) module or disassemble it.
Otherwise personal injury may result.
• Never attempt to disassemble or repair the side curtain-air bag (inflator) module. If any
abnormality is found, be sure to replace it
with new one as an assembly.
• Be sure to read “Precautions on Service and Diagnosis of Air Bag System”,
“Precautions on Handling and Storage of
Air Bag System Components” and
“Precautions on Disposal of Air Bag and
Seat Belt Pretensioner” before starting to
work and observe every precaution during
work. Neglecting them may result in
personal injury or undeployment of the air
bag when necessary.

CAUTION!
If air bag (inflator) module was dropped from
a height of 90 cm (3 ft) or more, it should be
replaced.

Check air bag (inflator) module appearance visually for
the following symptoms and if any one of them is found,
replace with a new one.
• Air bag has deployed.
• Inflator case being damaged or having been exposed to strong impact (dropped).
Forward-Sensor Removal and InstallationS7RS0B8206013
WARNING!
During service procedures, be very careful
when handling a sensor.
• Never strike or jar a sensor.
• A sensor and mounting bracket bolts must be carefully torqued to assure proper
operation. Under loose connection, it
could cause improper operation of the air
bag system.

Removal
1) Disconnect negative cable at battery.
2) Disable air bag system referring to “Disabling Air Bag System”.
3) Disconnect forward-sensor connector sliding connector outer (2) as shown.
4) Remove forward-sensor bolt (1) and forward-sensor (2).
I4RS0A820078-03
1
2
I4RS0A820079-01
1
2
I5RH01820119-01

Downloaded from www.Manualslib.com manuals search engine 9-ii Table of Contents
List of Connectors ........................................... 9A-103
C Connector .................................................... 9A-103
D Connector (M16A engine) ........................... 9A-104
E Connector .................................................... 9A-104
G Connector .................................................... 9A-106
J Connector ..................................................... 9A-108
K Connector .................................................... 9A-109
L Connector..................................................... 9A-109
M Connector (SPORT model) ......................... 9A-111
O Connector .................................................... 9A-111
R Connector .................................................... 9A-111
Lighting Systems .................................... 9B-1
Component Location ........... ................................9B-1
Lighting System Component s Location............... 9B-1
Interior Light System Location............................. 9B-2
Diagnostic Information and Procedures ............ 9B-2 Headlight Symptom Diagnosis ............................ 9B-2
Headlight Leveling System Symptom Diagnosis (If Equipped) ..................................... 9B-2
Turn Signal and Hazard Warning Light Symptom Diagnosis .......................................... 9B-3
Clearance, Tail and License Plate Light Symptom Diagnosis .......................................... 9B-3
Back-Up Light Symptom Diagnosis..................... 9B-4
Brake Light Symptom Diagnosis ......................... 9B-4
Front Fog Light Symptom Diagnosis (If Equipped) .......................................................... 9B-4
Interior Light Symptom Diagnosis ....................... 9B-5
Repair Instructions ..............................................9B-5 Headlight Housing Removal and Installation ...... 9B-5
Headlight Bulb Replacemen t............................... 9B-6
Headlight Aiming Adjustment with Screen .......... 9B-6
Headlight Switch (in Lighting Switch) Removal and Installation ................................... 9B-8
Headlight Switch (in Lighting Switch) Inspection .......................................................... 9B-8
Hazard Warning Switch Removal and Installation ......................................................... 9B-8
Hazard Warning Switch Inspection ..................... 9B-9
Brake Light Switch Inspection ............................. 9B-9
Turn Signal Light Switch (in Lighting Switch) Removal and Installation ................................... 9B-9
Turn Signal Light Switch (in Lighting Switch) Inspection .......................................................... 9B-9
Turn Signal and Hazard Warning Relay Removal and Installation ................................... 9B-9
Turn Signal and Hazard Warning Relay Inspection ........................................................ 9B-10
License Light Removal and Installation............. 9B-10
Front Fog Light Removal and Installation (If Equipped) ........................................................ 9B-11
Front Fog Light Bulb Replacement (If Equipped) ........................................................ 9B-11
Front Fog Light Switch Inspection (If Equipped) ........................................................ 9B-11
Front Fog Light Relay Inspection (If Equipped) ........................................................ 9B-11
Front Fog Light Aiming Adjustment with Screen (If Equipped) ....................................... 9B-12 Headlight Leveling Switch Inspection (If
Equipped) ........................................................ 9B-13
Headlight Leveling Actuator Inspection (If Equipped) ........................................................ 9B-13
Instrumentation / Driver Info. / Horn ...... 9C-1
Precautions ...........................................................9C-1 Precautions in Diagnosing Troubles for Combination Meter ............................................9C-1
General Description .............................................9C-1 CAN Communication System Description...........9C-1
Auto Volume Co ntrol System Description (If
Equipped) ..........................................................9C-3
Schematic and Routing Diagram ........................9C-4 Combination Meter Circuit Diagram ....................9C-4
Component Location ............ ...............................9C-6
Audio System Component Location ....................9C-6
Diagnostic Information and Procedures ............9C-6 Speedometer and VSS Symp tom Diagnosis ......9C-6
Tachometer Symptom Diagnosis ........................9C-6
Engine Coolant Temperature (ECT) Meter Symptom Diagnosis ..........................................9C-7
Fuel Meter Symptom Diagnosis ..........................9C-7
Low Fuel Warning Light Symptom Diagnosis .....9C-7
Oil Pressure Warning Light Symptom Diagnosis ..........................................................9C-8
Brake and Parking Brake Warning Light Symptom Diagnosis ..........................................9C-8
Seat Belt Reminder Light Symptom Diagnosis (If Equipped)......................................................9C-8
A/T Shift Position Indicator Symptom Diagnosis (A/T Model).......................................9C-9
Charge Warning Light Sy mptom Diagnosis ........9C-9
Main Beam (High Beam) Indicator Symptom Diagnosis ..........................................................9C-9
Warning Buzzer Circuit Sy mptom Diagnosis ....9C-10
Cigarette Lighter Symptom Diagnosis (If Equipped) ........................................................9C-10
Horn Symptom Diagnosis .................................9C-10
Information Display Symptom Diagnosis (If Equipped) ........................................................9C-11
Clock Symptom Diagnosis (If Equipped)...........9C-12
Audio System Symptom Diagnosis (If Equipped) ........................................................9C-12
Remote Audio Control Switch Symptom Diagnosis (If Equipped) ...................................9C-13
Navigation Symptom Diagnosis (If Equipped)...9C-14
Repair Instructions ............ ................................9C-14
Ignition Switch Removal and Installation...........9C-14
Ignition Switch Inspection..................................9C-14
Combination Meter Removal and Installation ...9C-15
Fuel Level Sensor Removal and Installation .....9C-15
Fuel Level Sensor Inspection ............................9C-15
Oil Pressure Switch Remova l and Installation ..9C-15
Oil Pressure Switch Inspec tion .........................9C-16
Engine Coolant Temperature (ECT) Sensor Inspection ........................................................9C-16
Brake Fluid Level Switch Inspection .................9C-16
Parking Brake Switch Inspec tion.......................9C-16