2000 SUZUKI SWIFT fuel

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-9
FUEL PUMP RELAY
FUEL INJECTOR
HO2S HEATER
IAC VALVE
IGNITION COIL WITH IGNITER
EGR VALVE
EVAP CANISTER PURGE VALVE
A/C CONTROL MODULE
RADIATOR FAN RELAY
MIL
MAIN RELAY
SIGNAL FROM SENSOR, SWITCH AND CONTROL MODULE
OUTPUT
INPUT
ENGINE & EMISSION CONTROL INPUT / OUTPUT TABLE
ELECTRIC CONTROL DEVICE
FUEL LEVEL SENSORFor detecting fuel level
BAROMETRIC PRESSURE SENSOR
START SWITCH
IGNITION SWITCH
LIGHTING SWITCH
REAR DEFOGGER SWITCH (IF EQUIPPED)
BLOWER SWITCH
A / C SWITCH
VSS
HEATED OXYGEN SENSOR-1
HEATED OXYGEN SENSOR-2For detecting deterioration of
three way catalytic convertor
IAT SENSOR
ECT SENSOR
TP SENSOR
MAP SENSOR
CMP SENSOR
CKP SENSOR

12 W / R “N”-range signal (A / T)
13 R Heated oxygen sensor-2
14 Y / R “D”-range signal (A / T)
15 R / W “R”-range signal (A / T)
16 Lg / B A / C SW signal
17 R / W EGR valve (stepper motor coil 4)
18 P / G Radiator fan relay
19 Y / Bl Fuel pump relay
20 —— ———
21 W / B “P”-range signal (A / T)
22 P / Bl Fuel level gauge
23 R / B “L”-range signal (A / T)
24 —— ———
1 V Malfunction indicator lamp
Vehicle speed sensor (M / T)
Output shaft speed sensor (+)
(A / T)
3 —— ———
4 G / W Shift solenoid – A (A / T)
5 Gr Throttle position (TP) sensor
6 B / W Ignition switch signal
7 Y / B Data link connector
Output shaft speed sensor (–)
(A / T)
9 —— ———
10 G GND for HO2S-2
11 G / Or Shift solenoid – B (A / T)
12 —— ———
13 —— ———
14 —— ———
15 —— ———
16 Br Tachometer signal
17 B / Y Engine start signal
CON-
NECTORTERMINALWIRE
COLORCIRCUITCON-
NECTORTERMINALWIRE
COLORCIRCUIT
20
Br / Y 19
Br / W
C02 C01C02
C03
Wire color
B : Black
B / Or : Black / Orange
B / W : Black / White
B / Y : Black / Yellow
Bl : Blue
Bl / Or : Blue / Orange
Bl / B : Blue / Black
Bl / R : Blue / Red
Bl / Y : Blue / Yellow
Br : Brown
Br / W : Brown / White
Br / Y : Brown / Yellow
G : Green
G / Or : Green / Orange
G / R : Green / Red
G / W : Green / White
Gr : Gray
Gr / R : Gray / Red
Lg / B : Lightgreen / Black
Lg / R : Lightgreen / RedP : Pink
P / Bl : Pink / Blue
P / G : Pink / Green
V : Violet
V / G : Violet / Green
V / R : Violet / Red
V / W : Violet / White
W : White
W / B : White / Black
W / R : White / Red
R : Red
R / B : Red / Black
R / Bl : Red / Blue
R / G : Red / Green
R / W : Red / White
R / Y : Red / Yellow
Y / B : Yellow / Black
Y / Bl : Yellow / Blue
Y / R : Yellow / Red
2
P
8
Bl
6E2-12 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
1 B Ground for ECM / PCM
2 B / Or Ground for drive circuit
3 B / Or Ground for drive circuit
4 V / R Canister purge valve
5 G / W Power steering pressure switch
6 V / W IAC valve
7 Bl Heater of HO2S-1
8 Bl / Or No.4 fuel injector
9 Bl / R No.1 fuel injector
10 G Ground for sensor circuit
11 B / W CMP sensor
12 —— ———
13 R Heated oxygen sensor-1
14 Lg / R Coolant temp. sensor
15 Gr / R Intake air temp. sensor
16 —— ———
17 Br / Y Electric load (+)
18 —— ———
IG coil assembly for
No.2 and 3 spark plugs
IG coil assembly for
No.1 and 4 spark plugs
21 Bl / B No.2 fuel injector
22 P Power supply for sensor
23 W CKP sensor (+)
24 B CKP sensor (–)
25 —— ———
26 G MAP sensor
27 —— ———
28 V / G Immobilizer indicator lamp
29 —— ———
30 —— ———
31 Bl / Y No.3 fuel injector
1 G / R A / C compressor clutch
2 R / Y EGR valve (stepper motor coil 1)
3 R / G Data link connector
4 Lg / B Heater of HO2S-2
5 R / B Power source
6 R / B Power source
7 W Backup power source
8 R EGR valve (stepper motor coil 3)
9 R / Bl EGR valve (stepper motor coil 2)
10 Gr Ground for main relay
11 Y / B “2”-range signal (A / T)

6E2-14 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
IDLE SPEED / IDLE AIR CONTROL (IAC) DUTY
INSPECTION
Before idle speed / IAC duty check, make sure of the following.

Lead wires and hoses of Electronic Fuel Injection and engine
emission control systems are connected securely.

Accelerator cable has some play, that is, it is not tight.

Valve lash is checked and adjusted according to maintenance
schedule.

Ignition timing is within specification.

All accessories (wipers, heater, lights, A / C, etc.) are out of ser-
vice.

Air cleaner has been properly installed and is in good condition.

No abnormal air inhaling from air intake system.
After above items are all confirmed, check idle speed and IAC duty
as follows.
NOTE:
Before starting engine, place transmission gear shift lever in
“Neutral” (shift selector lever to “P” range for A / T vehicle),
and set parking brake and block drive wheels.
1) Connect SUZUKI scan tool (1) to DLC with ignition switch OFF,
if it is available.
2) Warm up engine to normal operating temperature.
3) Check engine idle speed and “IAC duty” as follow:
Select “Data List” mode on scan tool to check “IAC duty” and en-
gine speed.
Special Tool
(A): 09931-76011 (SUZUKI scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16 / 14 pin DLC cable)
If duty and/or idle speed is out of specifications, inspect idle air
control system referring to Diagnostic Flow Table B-4 IDLE AIR
CONTROL SYSTEM CHECK in Section 6.
ENGINE IDLE SPEED AND IAC DUTY
A/C OFFA/C ON
M / T vehicle750±50 r / min (rpm)875±50 r/minA / T vehicle
at P/N range750 ±50 r/min (rpm)
8 – 25 or *8 – 35%
875 ±50 r/min
(rpm)
NOTE:
Duty values with (*) are applicable to vehicle used at high
altitude (higher than 2,000 m or 6,560 ft).
4) Check that 875 ± 50 r / min. idle speed is obtained with lighting
switch ON and heater blower switch in 2 – 4 position.
If not, check “Electric load (+)” circuit and “Heater blower switch
signal” circuit referring to “ELECTRONIC CONTROL SYSTEM”
in this section and idle air control system.
5) Check that specified engine idle speed is obtained with A / C ON
if vehicle is equipped with A / C.
If not, check A / C ON signal circuit.

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)