2008 SUZUKI SWIFT fuel level sensor inspection

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-117
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and a tester, on a level road.

NOTE
Check to make sure that following conditions ar e satisfied when using this “DTC confirmation
procedure”.
• Intake air temperature at engine start: –10 °C (14 ° F) to 80 °C (176 °F)
• Intake air temperature: –10 °C (14 °F) to 70 °C (158 °F)
• Engine coolant temperature: 70 °C (158 °F) to 150 °C (302 °F)
• Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)

1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Run engine at idle for 10 min.
5) Drive vehicle and increase engine speed 3000 rpm in 3rd gear.
6) Release accelerator pedal and with engine brake applied, keep vehicle coasting for 5 sec. or more. (Keep fuel cut condition for 5 sec. or more) If fuel cut condition is not ke pt for 5 sec. or more, coast down a slope in engine speed
1000 – 3000 rpm for 5 sec. or more.
7) Stop vehicle and run engine at idle.
8) Check DTC and pending DTC by using scan tool.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
DTC P0401:
Difference in intake manifold absolute pressure between opened EGR valve
and closed EGR valve is smaller than specified value.
(*2 driving cycle detection logic, monitoring once per driving cycle)
DTC P0402:
Difference in intake manifold absolute pressure between opened EGR valve
and closed EGR valve is la rger than specified value.
(*2 driving cycle detection logic, monitoring once per driving cycle) •EGR valve
• EGR passage
• MAP sensor
•ECM
Step
Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Do you have SUZUKI scan tool? Go to Step 3.Go to Step 5.

Downloaded from www.Manualslib.com manuals search engine Fuel System: 1G-2
Fuel Pump DescriptionS7RS0B1701003
The fuel pump (1) is an in-tank type electric pump.
Incorporated in the pump assembly are;
a fuel filter (2) and a fuel pressure regulator (3) are
included and a fuel level gauge (4) is attached.
Addition of the fuel pressure regulator to the fuel pump
makes it possible to mainta in the fuel pressure at
constant level and ECM controls compensation for
variation in the intake manifold pressure.
Schematic and Routing Diagram
Fuel Delivery System DiagramS7RS0B1702001
Diagnostic Information and Procedures
Fuel Pressure InspectionS7RS0B1704001
WARNING!
Before starting the following procedure, be
sure to observe “Precautions on Fuel System
Service” in order to reduce the risk or fire
and personal injury.

1) Relieve fuel pressure in fuel feed line referring to
“Fuel Pressure Relief Procedure”.
2) Disconnect fuel feed hose from fuel delivery pipe.
3) Connect special tools and hose between fuel feed hose (1) and fuel delivery pipe as shown in figure,
and clamp hoses securely in order to ensure that no
leaks occur during checking.
Special tool
(A): 09912–58442
(B): 09912–58432
(C): 09912–58490
1
3
2
4
I6RS0C170001-01
4
6 7
8
12
2 3
11
10
5
1
9
I6RS0C170002-01
1. Fuel tank
5. Fuel injector9. EVAP canister
2. Fuel pump 6. Fuel feed line10. Fuel filter
3. Fuel pressure regulator 7. Fuel vapor line 11. Main fuel level sensor
4. Delivery pipe 8. Intake manifold12. EVAP canister purge valve
1
(C) (B)
(A)
I3RM0A170004-01

Downloaded from www.Manualslib.com manuals search engine Fuel System: 1G-16
Removal1) Remove fuel pump assembly from fuel tank referring to “Fuel Pump Assembly Removal and Installation”.
2) Disconnect main fuel level sensor connector (3).
3) With pressing snap-fit part (2), remove main fuel level sensor (1) by sliding it in the arrow direction as
shown in figure.
Installation
Reverse removal procedure for installation.Fuel Pump InspectionS7RS0B1706019
• Check fuel pump assembly for damage.
• Check fuel suction filter for evidence of dirt and contamination. If present, replace or clean and check
for presence of dirt in fuel tank.
• For electrical circuit, refer to “Fuel Pressure Check in Section 1A”.
• For inspection of main fuel level sensor (1), refer to “Fuel Level Sensor Inspection in Section 9C”.
Specifications
Tightening Torque SpecificationsS7RS0B1707001
NOTE
The specified tightening torque is also described in the following.
“Fuel System Components”
“Fuel Hose Disconnecting and Reconnecting”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
1
21
3
I5RS0D170006-031
I5RS0D170008-01
Fastening part
Tightening torque
Note
N ⋅mkgf-mlb-ft
Fuel delivery pipe bolt 25 2.5 18.0 )
Ground wire bolt 11 1.1 8.0 )
Fuel tank bolt 45 4.5 33.0 )
Fuel filler hose clamp 2 0.2 1.5 )
Fuel pump assembly bolt 11 1.1 8.0 )

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

Downloaded from www.Manualslib.com manuals search engine 9C-7 Instrumentation / Driver Info. / Horn:
Engine Coolant Temperature (ECT) Meter Symptom DiagnosisS7RS0B9304003
Fuel Meter Symptom DiagnosisS7RS0B9304004
Low Fuel Warning Light Symptom DiagnosisS7RS0B9304005
NOTE
Confirm that fuel meter is in good condition before referring to the following possible causes.
• When fuel level sensor circuit is open or short, fuel meter indicates empty even if fuel tank does not empty.
• The low fuel warning light comes ON when fu el level is lower than specification below.

Low fuel warning light operation:
ConditionPossible cause Correction / Reference Item
Engine coolant
temperature (ECT) meter
shows no operation or
incorrect operation Circuit fuse blown
Replace fuse and check for short circuit.
ECT sensor faulty Check ECT sensor referring to “ECT Sensor
Inspection in Section 1C”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
ECM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
Fuel meter shows no
operation or incorrect
operation Circuit fuse blown
Replace fuse and check for short circuit.
Fuel level sensor faulty Check fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
Low fuel warning light operation: Fuel amount: Resistance of fuel level sensor:
ON Approx. 6.5 liter Approx. 251 Ω
Condition Possible cause Correction / Reference Item
Low fuel warning light
does not come ON when
fuel level is lower than
specification Circuit fuse blown
Replace fuse and check for short circuit.
Fuel level sensor faulty Check fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
Low fuel warning light
comes ON steady Low fuel
Refill fuel.
Fuel level sensor faulty Check fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.

Downloaded from www.Manualslib.com manuals search engine 9C-15 Instrumentation / Driver Info. / Horn:
Combination Meter Removal and InstallationS7RS0B9306003
Removal1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover (1) pulling it in arrow direction shown in figure.
3) Remove combination mete r cluster panel (1) pulling
it in arrow direction shown in figure.
4) Remove screws (1) fast ening combination meter.
5) Remove combination me ter (2) pulling it arrow
direction as shown.
Installation
Reverse removal procedure.
Fuel Level Sensor Removal and InstallationS7RS0B9306004
For removal and installation, refer to “Main Fuel Level
Sensor Removal and Installation in Section 1G”.
Fuel Level Sensor InspectionS7RS0B9306005
• Check that resistance between terminals “a” and “b” of fuel level sensor changes with change of float
position.
• Check resistance between terminals “a” and “b” at each float position in the following.
If the measured value is out of specification, replace.
Fuel level sensor specifications
Oil Pressure Switch Removal and InstallationS7RS0B9306006
For removal and installation , refer to “Oil Pressure
Check in Section 1E”.
1
I4RS0B930005-02
1
I4RS0B930006-02
1
2
I4RS0A930012-02
Float Position Resistance (Ω)
Full Upper “C” 160 mm
(6.30 in.) 40
± 2
Full Lower “D” 19 mm
(0.75 in.) 280
± 3.3
1. Fuel pump 2. Float
“b”“a”
2
“C”
“D”
1
I6RS0C930004-01