emission SUZUKI SWIFT 2000 1.G SF310 Service Manual Online

3. Fuel return pipe
6E2-18 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
Installation
1) Install new O-ring (2) to IAC valve (1).
2) Install IAC valve (1) to throttle body (3).
Tighten IAC valve screws to specified torque.
Tightening Torque
(a): 3.3 N
.m (0.33 kg-m, 2.5 lb-ft)
3) Install throttle body to intake manifold referring to “Throttle Body
Installation” section.
FUEL DELIVERY SYSTEM
FUEL PRESSURE INSPECTION
WARNING:
Be sure to perform work in a well-ventilated area and away
from any open flames, or there is a risk of a fire breaking out.
1) Relieve fuel pressure in fuel feed line referring to “Fuel Pressure
Relief Procedure” in Section 6.
2) Disconnect fuel feed hose from fuel delivery pipe.
CAUTION:
A small amount of fuel may be released when fuel hose
is disconnected. Place container under the joint with a
shop cloth so that released fuel is caught in container or
absorbed in cloth. Place that cloth in an approved con-
tainer.
3) Connect special tools and hose between fuel delivery pipe (1)
and fuel feed hose (2) as shown in figure, and clamp hoses se-
curely to ensure no leaks occur during checking.
Special Tool
(A): 09912-58441
(B): 09912-58431
(C): 09912-58490
4) Check that battery voltage is above 11 V.

270 – 310 kPa
2.7 – 3.1 kg / cm2
38.4 – 44.0 psi
At specified
idle speed
With 1 min. after
engine (fuel pump)
stop (Pressure re-
duces as time passes)over 200 kPa
2.0 kg / cm
2
28.4 psi
CONDITION FUEL PRESSURE
With fuel pump
operating and
engine stopped
200 – 240 kPa
2.0 – 2.4 kPa
28.4 – 34.1 psi
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-19
5) Check fuel pressure as follows.
[Not using SUZUKI scan tool]
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 pres-
sure.
b) Start engine and warm it up to normal operating temperature.
c) Measure fuel pressure at idling.
If measured pressure doesn’t satisfy specification, refer to
“Diagnostic Flow Table B-3” in “Engine Diagnosis” section and
check each possibly defective part. Replace if found defective.
d) After checking fuel pressure, remove fuel pressure gauge.
CAUTION:
As fuel feed line is still under high fuel pressure, make
sure to release fuel pressure according to following pro-
cedures.

Place fuel container under joint.

Cover joint with rag and loosen joint nut slowly to re-
lease fuel pressure gradually.
e) Remove special tools from fuel delivery pipe.
f) Connect fuel feed hose to fuel delivery pipe and clamp it secure-
ly.
g) With engine OFF and ignition switch ON, check for fuel leaks.

6E2-20 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
[Using SUZUKI scan tool]
a) Connect SUZUKI scan tool to DLC with ignition switch OFF.
b) Turn ignition switch ON and then select “DATA LIST” mode on
scan tool.
c) Make sure that vehicle condition is as following.

Vehicle speed = 0 KPH

Engine speed = 0 RPM

Fuel tank level
15%
d) Clear DTC by using “CLEAR INFO” mode.
e) Check fuel pressure by using “FUEL PUMP CONT” mode in
“MISC TEST” menu.
CONDITIONFUEL PRESSURE
With fuel pump operating
2.7 – 3.1 kg / cm2
270 – 310 kPa
38.4 – 44.0 psi
Within 1 min. after fuel pump
stop (Pressure reduces as
time passes)Over 2.0 kg / cm2
200 kPa
28.4 psi
If measured pressure doesn’t satisfy specification, refer to
“Diagnostic Flow Table B-3” and check each possibly defective
part. Replace if found defective.
f) Start engine and warm it up to normal operating temperature.
And then check fuel pressure.
CONDITIONFUEL PRESSURE
At specified idle speed
2.0 – 2.4 kg / cm2
200 – 240 kPa
28.4 – 34.1 psi
If measured pressure doesn’t satisfy specification, refer to
“Diagnostic Flow Table B-3” and check each possibly defective
part. Replace if found defective.
g) After checking fuel pressure, remove fuel pressure gauge.
CAUTION:
As fuel feed line is still under high fuel pressure, make
sure to release fuel pressure according to following pro-
cedures.

Place fuel container under joint.

Cover joint with rag and loosen joint nut slowly to re-
lease fuel pressure gradually.
h) Remove special tools from fuel delivery pipe.
i) Connect fuel feed hose to fuel delivery pipe and clamp it secure-
ly.
j) With engine OFF and ignition switch ON, check for fuel leaks.
Tightening Torque
Fuel pressure regulator bolt: 11 N
.m (1.1 kg-m, 8.0 lb-ft)

1. Fuel filler
2. Ignition switch
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-21
FUEL PUMP
On-Vehicle Inspection
CAUTION:
When fuel filler cap is removed in any procedure, work must
be done in a well-ventilated area, keep away from any open
flames and without smoking.
NOTE:
The fuel pressure regulator is the one body with the fuel pump
assembly so individual inspection of it is impossible.
1) Remove filler cap and turn ON ignition switch. Then fuel pump
operating sound should be heard from fuel filler for about 2 se-
conds and stop. Be sure to reinstall fuel filler cap after checking.
If above check result is not satisfactory, advance to “Diagnostic
Flow Table B-2”.
2) Turn OFF ignition switch and leave over 10 minutes as it is.
3) Fuel pressure should be felt at fuel return hose (1) for 2 seconds
after ignition switch ON.
If fuel pressure is not felt, advance to “Diagnostic Flow Table
B-3”.
Removal
Remove fuel tank from body according to procedure described in
Section 6C and remove fuel pump from fuel tank.
Inspection
Check fuel pump filter for evidence of dirt and contamination. If
present, clean and check for presence of dirt in fuel tank.
Installation
1) Install fuel pump to its bracket.
2) Install fuel pump to fuel tank and then install fuel tank to body ac-
cording to procedure described in Section 6C.

6E2-22 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
FUEL PRESSURE REGULATOR
Removal
1) Relieve fuel pressure according to procedure described in sec-
tion 6.
2) Disconnect battery negative cable at battery.
3) Disconnect vacuum hose (3) from fuel pressure regulator (1).
4) Disconnect fuel return hose (2) from fuel pressure regulator (1).
CAUTION:
A small amount of fuel may be released when hose is dis-
connected. Cover hose to be disconnected with a shop
cloth.
5) Remove fuel pressure regulator.
CAUTION:
A small amount of fuel may be released when it is from
delivery pipe.
Place a shop cloth under delivery pipe so that released
fuel is absorbed in it.
Installation
For installation, reverse removal procedure and note following pre-
cautions.

Use new O-ring.

Apply thin coat of spindle oil or gasoline to O-ring to facilitate
installation.

With engine OFF and ignition switch ON, check for fuel leaks
around fuel line connection.
Tightening Torque
Fuel pressure regulator bolt: 11 N
.m (1.1 kg-m, 8.0 lb-ft)

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-23
FUEL INJECTOR
On-Vehicle Inspection
1) Using sound scope (1) or such, check operating sound of injec-
tor (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).
2) Disconnect coupler (1) from injector, connect ohmmeter be-
tween terminals of injector and check resistance.
Resistance of injector: 12.0 – 13.0 Ω at 20C, 68F
If resistance is out of specification, replace.
3) Connect coupler (1) to injector securely.
Removal
1) Relieve fuel pressure according to procedure described in Sec-
tion 6.
2) Disconnect battery negative cable at battery.
3) Disconnect fuel injector couplers.
4) Disconnect vacuum hose from fuel pressure regulator (1).
5) Remove fuel delivery pipe bolts (2).
6) Remove fuel injector(s) (3).
CAUTION:
A small amount of fuel may come out after removal of fuel
injectors, cover them with shop cloth.

6E2-24 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
Inspection
WARNING:
As fuel is injected in this inspection, perform in a well venti-
lated area and away from open flames.
Use special care to prevent sparking when connecting and
disconnecting test lead to and from battery.
1) Install injector (1) and fuel pressure regulator (2) to special tool
(injector checking tool).
Special Tool
(A): 09912-58421
2) Connect special tools (hose and attachment) to fuel feed hose
(3) of vehicle.
Special Tool
(B): 09912-58431
3) Connect special tool (test lead) to injector.
Special Tool
(C): 09930-88530

When not using
SUZUKI scan tool : When using
SUZUKI scan tool :
4. Keep as far apart
as possible
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-25
4) Install suitable vinyl tube onto injector nozzle to prevent fuel from
splashing out when injecting.
5) Put graduated cylinder under injector as shown.
6) Operate fuel pump and apply fuel pressure to injector as follows:
When using SUZUKI scan tool :
a) Connect SUZUKI scan tool to DLC with ignition switch OFF.
b) Turn ignition switch ON, clear DTC and select “MISC TEST”
mode on SUZUKI scan tool.
c) Turn fuel pump ON by using SUZUKI scan tool.
Special Tool
(A): 09931-76011 (SUZUKI scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16 / 14 pin DLC cable)
When not using SUZUKI scan tool :
a) Remove fuel pump relay from connector.
b) 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 dam-
age to ECM, wire harness, etc.
c) Turn ignition switch ON.
7) Apply battery voltage (3) to injector (2) for 15 seconds and mea-
sure injected fuel volume with graduated cylinder.
Test each injector two or three times.
If not within specification, replace injector.
Injected fuel volume:
38 – 48 cc / 15 sec. (1.28 / 1.34 – 1.62 / 1.69 US / Imp. 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 following specifications, replace.
Fuel leakage (1): Less than 1 drop / min.

6E2-26 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
Installation
For installation, reverse removal procedure and note following pre-
cautions.

Replace injector O-ring (1) with new one using care not to dam-
age it.

Check if cushion (2) is scored 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 intake manifold.
Make sure that injectors (3) rotate smoothly (6). If not, probable
cause is incorrect installation of O-ring (1). Replace O-ring (1)
with new one.

Tighten delivery pipe bolts (5) and make sure that injectors (3) ro-
tate smoothly (6).
Tightening Torque
(a): 25 N
.m (2.5 kg-m, 18.0 lb-ft)

After installation, with engine OFF and ignition switch ON, check
for fuel leaks around fuel line connection.

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-27
ELECTRONIC CONTROL SYSTEM
ENGINE CONTROL MODULE (POWERTRAIN
CONTROL MODULE) [ECM (PCM)]
CAUTION:
As ECM (PCM) consists of precision parts, be careful not to
expose it to excessive shock.
Removal
1) Disconnect battery negative cable at battery.
2) Disable air bag system, refer to “DISABLING THE AIR BAG
SYSTEM” in Section 9J if equipped.
3) Lower fuse box after removing screws and remove fuse box
bracket.
4) Remove ECM (PCM) (1) from body.
5) Disconnect couplers from ECM (PCM).
Installation
Reverse removal procedure noting the following:

Connect couplers to ECM (PCM) securely.
MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP
SENSOR)
Inspection
Check MAP sensor referring to “MAP Sensor Individual Check” in
DTC P0105 Flow Table. If malfunction is found, replace.