check engine SUZUKI SWIFT 2005 2.G Service Workshop Manual

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4) Check that battery voltage is 11 V or more.
5) Measure fuel pressure at each condition.If measured pressure is out of specification, refer to
“Fuel Pressure Check in Section 1A” and check each
possibly defective part. Replace if found defective.
a) Turn ignition switch ON to operate fuel pump and after 2 seconds turn it OFF. Repeat this 3 or 4
times and then check fuel pressure.
Fuel pressure specification
With fuel pump operating and engine
stopped: 270 – 310 kPa (2.7 – 3.1 kg/cm2, 38.4
– 44.0 psi)
b) Start engine and warm it up to normal operating temperature, and measure fuel pressure at
idling.
Fuel pressure specification
At specified idle speed: 270 – 310 kPa (2.7 –
3.1 kg/cm2, 38.4 – 44.0 psi)
c) Stop engine, and measure fuel pressure at one minute after stopping.
Fuel pressure specification
With 1 min. after engine (fuel pump) stop
(Pressure reduces as time passes): Over 300
kPa (3.0 kg/cm
2, 42.7 psi)
6) After checking fuel pressure, remove fuel pressure gauge.
WARNING!
As fuel feed line is still under high fuel
pressure, make sure to release fuel pressure
according to the following procedures.
• Place fuel container under joint.
• Cover joint with rag and loosen joint nut slowly in order to release fuel pressure
gradually.

7) Remove special tools from fuel delivery pipe and fuel feed hose.
8) Connect fuel feed hose to fuel delivery pipe and clamp it securely.
9) With engine OFF and ignition switch ON, check for fuel leaks.
Fuel Cut Operation InspectionS7RS0B1704002
NOTE
Before inspection, make sure that gear shift
lever is in neutral positi on (shift select lever
is “P” range for A/T vehicle), A/C is OFF and
parking brake lever is pulled all the way up.

1) Warm engine up to normal operating temperature.
2) While listening to sound of injector (2) by using sound scope (1) or such, increase engine speed to
higher than 3,000 r/min.
3) Check to make sure that injector operation sound is stop when throttle valve is closed instantly and it is
heard again when engine speed is reduced to
approx. 2,000 r/min or less.
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Fuel Pressure Relief ProcedureS7RS0B1706003
CAUTION!
This work must not be done when engine is
hot. If done so, it may cause adverse effect to
catalyst.

NOTE
If ECM detects DTC(s) after servicing, clear
DTC(s) referring to “DTC Clearance in
Section 1A”.

1) Make sure that engine is cold.
2) Shift transaxle gear shift lever in “Neutral” (shift select lever in “P” range for A/T model), set parking
brake and block drive wheels.
3) Remove relay / fuse box cover.
4) Disconnect fuel pump relay (1) from relay / fuse box (2).
5) Remove fuel filter cap in order to release fuel vapor pressure in fuel tank, and then reinstall it.
6) Start engine and run it until engine stops for lack of fuel. Repeat cranking engine 2 – 3 times for about 3
seconds each time in order to dissipate fuel pressure
in lines. Fuel connections are now safe for servicing.
7) After servicing, connect fuel pump relay (1) to relay / fuse box and install re lay / fuse box cover.
Fuel Leakage Check ProcedureS7RS0B1706004
After performing any service on fuel system, check to
make sure that there are no fuel leakages as follows.
1) Turn ON ignition switch for 3 seconds (to operate fuel pump) and then turn it OFF.
Repeat this (ON and OFF) 3 or 4 times and apply
fuel pressure to fuel line until fuel pressure is felt by
hand placed on fuel feed hose.
2) In this state, check to see that there are no fuel leakages from any part of fuel system.
Fuel Lines On-Vehicle InspectionS7RS0B1706005
CAUTION!
Due to the fact that fuel feed line (1) is under
high pressure, use special care when
servicing it.

Visually inspect fuel lines for evidence of fuel leakage,
hose crack and deterioration or damage.
Make sure all cl amps are secure.
Replace parts as needed.
Fuel Pipe Removal and InstallationS7RS0B1706006
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.

Removal
1) Relieve fuel pressure in fuel feed line according to “Fuel Pressure Relief Procedure”.
2) Disconnect negative cable at battery.
3) Disconnect fuel pipe joint and fuel hose (3) from fuel pipe (2) at the front and rear of each fuel pipe
referring to “Fuel Hose Disconnecting and
Reconnecting”.
4) Mark the location of clamps (1) on fuel pipes (2), so that the clamps can be reinstalled to where they
were.
5) Remove pipes (2) with clamp (1) from vehicle.
6) Remove clamp (1) from pipes (2).
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Installation1) Install clamps to marked location on pipes. If clamp is deformed, its claw is bent or broken, replace it with
new one.
2) Install pipes with pipe clamps to vehicle.
3) Connect fuel hoses and pipes to each pipe referring to “Fuel Hose Disconnecting and Reconnecting”.
4) Connect negative cable at battery.
5) With engine OFF, turn igniti on switch to ON position
and check for fuel leaks.
Fuel Injector On-Vehicle InspectionS7RS0B1706007
1) Using sound scope (1) or such, check operating sound of injector (2) when engine is running or
cranking.
Cycle of operating sound should vary according to
engine speed.
If no sound or an unusual sound is heard, check
injector circuit (wire or coupler) or injector.
2) Disconnect connector (1) from injector, connect ohmmeter between terminals of injector and check
resistance.
If resistance is out of specification, replace.
Resistance of fuel injector
11.3 – 13.8 Ω at 20 °C, 68 °F
3) Connect connector to injector securely.
Fuel Injector Removal and InstallationS7RS0B1706008
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.

Removal 1) Relieve fuel pressure according to “Fuel Pressure Relief Procedure”.
2) Disconnect negative cable at battery.
3) Disconnect MAF sensor connector, and detach EVAP canister purge valve.
4) Remove air cleaner assembly with air intake pipe.
5) Disconnect fuel injector couplers.
6) Disconnect fuel feed hose from fuel delivery pipe (1).
7) Remove fuel delivery pipe bolts (2).
8) Remove fuel injector(s) (3).
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Installation
Reverse removal procedure for installation noting the
following.
• Replace injector O-ring (1) with new one using care not to damage it.
• Check if cushion (2) is scor ed or damaged. If it is,
replace with new one.
• Apply thin coat of fuel to O-rings (1) and then install injectors (3) into delivery pipe (4) and cylinder head.
Make sure that injectors rota te smoothly (6). If not,
probable cause is incorrect installation of O-ring.
Replace O-ring with new one.
• Tighten delivery pipe bolts (5) to specified torque and make sure that inject ors rotate smoothly.
Tightening torque
Fuel delivery pipe bolt (a): 25 N·m (2.5 kgf-m, 18.0
lb-ft)
• After installation, with engine OFF and ignition switch ON, check for fuel leaks around fuel line connection.Fuel Injector InspectionS7RS0B1706009
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 according to “Fuel Pressure Relief Procedure” if equipped.
2) Disconnect fuel feed hose from delivery pipe.
3) Set special tools as follows.
Special tool
(A): 09912–58421
(B): 09930–88530
(C): 09912–57610
a) Fit washer (1) (inside diameter 13.5 – 14.5 mm (0.532 – 0.570 in.)) to injector (2), and then
install injector to special tool (A).
b) Connect special tool (B) to injector.
c) Install special tool (C) to special tool (A).
d) Connect fuel feed hose to special tool (A).
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(B)
(A)
(A) (C)
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4) Install suitable vinyl tube onto injector nozzle to
prevent fuel from splashing out when injecting.
5) Put graduated cylinder under injector.
6) Operate fuel pump and apply fuel pressure to
injector as follows:
a) When using scan tool:
i) Connect scan tool to DLC with ignition switch OFF.
ii) Turn ignition switch ON, clear DTC and select “MISC TEST” mode on scan tool.
iii) Turn fuel pump ON by using scan tool.
Special tool
(A): SUZUKI scan tool
b) When not using scan tool: i) Remove fuel pump relay from connector.
ii) Connect two terminals of relay connector using service wire (1) as shown in figure.
CAUTION!
Check to make sure that connection is made
between correct terminals. Wrong
connection can cause damage to ECM, wire
harness, etc.

iii) Turn ignition switch ON. 7) Apply battery voltage to in
jector (1) for 15 seconds
and measure injected fuel volume with graduated
cylinder. Test each injector two or three times. If not
within specification, replace injector.
Injected fuel volume
43 – 47 cc/15 sec. (1.45/1.51 – 1.58/1.65 US/lmp
oz/15 sec.)
8) Check fuel leakage from injector nozzle. Do not operate injector for this check (but fuel pump should
be at work). If fuel leaks (1) more than the following
specifications, replace.
Fuel leakage
Less than 1 drop/min.
Fuel Filler Cap InspectionS7RS0B1706010
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.

Remove cap (1), and che ck gasket for even filler neck
imprint, and deterioration or any damage. If gasket (2) is
in malcondition, replace cap.
NOTE
If cap requires replacement, only a cap with
the same features should be used. Failure to
use correct cap can result in fire and
personal injury.

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Fuel Tank Inlet Valve InspectionS7RS0B1706012
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.

Check fuel tank inlet valve for the following.
If any damage or malfunction is found, replace.
•Damage
• Smooth opening and closing
Fuel Tank Removal and InstallationS7RS0B1706013
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.

Removal1) Relieve fuel pressure in fuel feed line according to
“Fuel Pressure Relief Procedure”.
2) Disconnect negative cable at battery.
3) Hoist vehicle.
4) Remove exhaust center pipe.
5) Disconnect fuel filler hose and breather hose from
filler neck referring to “Fue l Tank Inlet Valve Removal
and Installation”.
6) Due to absence of fuel tank drain plug, drain fuel tank by pumping fuel out through fuel tank filler.
Use hand operated pump device to drain fuel tank.
CAUTION!
• Do not force pump hose into fuel tank, or pump hose may damage fuel tank inlet
valve.
• Never store fuel in an open container due to possibility of fire or explosion.

7) Disconnect fuel pipe joint and fuel hoses (1) from fuel pipes (2) referring to “Fuel Hose Disconnecting
and Reconnecting”.
8) Support fuel tank (1) with jack (2) and remove its mounting bolts.
9) Lower fuel tank a little as to disconnect wire harness at connector (1) and ground wire (2), then remove
fuel tank.
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Installation
CAUTION!
• When connecting joint, clean outside surfaces of pipe where joint is to be
inserted, push joint into pipe till joint lock
clicks and check to ensure that pipes are
connected securely, or fuel leak may
occur.
• Never let the fuel hoses touch the ABS sensor harness (if equipped).

1) If parts have been removed from fuel tank, install them before installing fuel tank to vehicle.
2) Raise fuel tank (1) with jack (2) and connect fuel pump connector (3), ground wire (4) and clamp wire
harness.
Tightening torque
Ground wire bolt (a): 11 N·m (1.1 kgf-m, 8.0 lb-ft)
3) Install fuel tank to vehicle. Tightening torque
Fuel tank bolt (b): 45 N·m (4.5 kgf-m, 33.0 lb-ft) 4) Connect fuel filler hose (1
) and breather hose (2) to
filler neck (3) as shown in figure, and clamp them
securely.
Tightening torque
Fuel filler hose clamp (a): 2 N·m (0.2 kgf-m, 1.5
lb-ft)
5) Connect fuel feed hose (1) and vapor hose (2) to each pipe as shown in figure, and clamp them
securely.
6) Install exhaust center pipe referring to “Exhaust Pipe and Muffler Removal and Installation in Section 1K”.
7) Connect negative cable at battery.
8) With engine OFF, turn ignition switch to ON position and check for fuel leaks.
Fuel Tank InspectionS7RS0B1706014
After removing fuel tank, check hoses and pipes
connected to fuel tank for leaks, loose connections,
deterioration or damage. Also check fuel pump
assembly gaskets for leaks, visually inspect fuel tank for
leaks and damage.
Replace any damaged or malconditioned parts.
(b)(b)
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2
3
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(a)
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Fuel Tank Purging ProcedureS7RS0B1706015
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.
• This purging procedure will not remove all fuel vapor.
Do not attempt any repair on tank using
heat of flame as an explosion resulting in
personal injury could occur.

CAUTION!
Never remain water in fu el tank after washing,
or fuel tank inside will get corrosion.

The following procedure are used for purging fuel tank.
1) After removing fuel tank, remove all hoses, pipes and fuel pump assembly from fuel tank.
2) Drain all remaining fuel from tank.
3) Place fuel tank to flushing area.
4) Fill tank with warm water or tap water, and agitate
vigorously and drain. Repeat this washing until
inside of tank is clean. Replace tank if its inside is
rusty.
5) Completely flush out rema ining water after washing.
Fuel Pump On-Vehicle InspectionS7RS0B1706016
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.

NOTE
The fuel pressure regulator is incorporated
with the fuel pump assembly so individual
inspection of it is impossible.

1) Remove filler cap and turn ON ignition switch (2).
Then fuel pump operating sound should be heard
from fuel filler (1) for about 2 seconds and stop. Be
sure to reinstall fuel filler cap after checking.
If the check result is not satisfactory, go to “Fuel
Pump and Its Circuit Check in Section 1A”. 2) Turn OFF ignition switch and leave over 10 minutes
as it is.
3) Fuel pressure should be felt at fuel feed hose (1) for about 2 seconds after ignition switch ON.
If fuel pressure is not felt, go to “Fuel Pressure
Check in Section 1A”.
Fuel Pump Assembly Removal and InstallationS7RS0B1706017
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.

Removal
1) Remove fuel tank from vehicle. Refer to “Fuel Tank Removal and Installation”.
2) Disconnect fuel feed pipe (1) from fuel pump assembly (2) referring to “Fuel Hose Disconnecting
and Reconnecting”.
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3) Remove fuel pump assembly (1) from fuel tank (2).
Installation
CAUTION!
When connecting joint, clean outside surface
of pipe where joint is to be inserted, push
joint into pipe till jo int lock clicks and check
to ensure that pipes are connected securely,
or fuel leak may occur.

1) Clean mating surfaces of fuel pump assembly (1) and fuel tank.
2) Put plate (2) on fuel pump assembly (1) by matching the protrusion of fuel pump assembly (3) to plate
hole (4) as shown.
3) Install new gasket (2) and fuel pump assembly (1) earth bracket (5) with plate (3) to fuel tank (4).
Tightening torque
Fuel pump assembly bolt (a): 11 N·m (1.1 kgf-m,
8.0 lb-ft) 4) Connect fuel feed line (1) (pipe joint) to fuel pump
assembly (2).
5) Install fuel tank to vehi cle. Refer to “Fuel Tank
Removal and Installation”.
Main Fuel Level Sensor Removal and
Installation
S7RS0B1706018
CAUTION!
• Do not touch resister plate (1) and deform arm (2). It may cause main fuel level sensor
to fail.
• Be very careful not to cause damage to fuel tube installed section (sealed section
in bore). If it be damaged, replace it with
new one, or fuel will leak from the part.

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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”.
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21
3
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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 )