2000 SUZUKI SWIFT fuel injector

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.

6E2-34 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
FUEL CUT OPERATION
Inspection
NOTE:
Before inspection, check to make sure that gear shift lever is
in neutral position (with A / T model, selector lever in “P”
range), A / C is OFF and that parking brake lever is pulled all the
way up.
1) Warm up engine to normal operating temperature.
2) While listening to sound of injector (1) by using sound scope (2)
or such, increase engine speed to higher than 3,000 r / min.
3) Check to make sure that sound to indicate operation of injector
stops when throttle valve is closed instantly and it is heard again
when engine speed is reduced to less than about 2,000 r / min.
RADIATOR FAN CONTROL SYSTEM
System Inspection
WARNING:
Keep hands, tools, and clothing away from engine cooling
fan to help prevent personal injury. This fan is electric and
can come on whether or not the engine is running. The fan
can start automatically in response to the ECT sensor with
the ignition switch in the ON position.
Check system for operation referring to Flow Table B-8 in Section
6.
If radiator fan fails to operate properly, check relay, radiator fan and
electrical circuit.
Radiator Fan
Inspection
1) Check continuity between each two terminals.
If there is no continuity, replace radiator fan motor.