2000 SUZUKI SWIFT ECU

6B-12 ENGINE COOLING
COOLING WATER PIPES OR HOSES
REMOVAL
1) Drain cooling system.
2) To remove these pipes or hoses, loosen clamp on each
hose and pull hose end off.
INSTALLATION
Install removed parts in reverse order of removal procedure, not-
ing the following.
Tighten each clamp securely.
Refill cooling system with proper coolant referring to “COOL-
ING SYSTEM REFILL”.
THERMOSTAT
REMOVAL
1) Drain cooling system by loosening drain plug of radiator
referring to “COOLING SYSTEM DRAINING”.
2) Remove air cleaner assembly and resonator referring to sec-
tion 6A1
3) Remove intake manifold referring to Section 6A1.
4) Remove generator referring to Section 6H.
5) Disconnect water hose (1) and heater hose (2) from each
pipe.
6) Remove thermostat case (3) with thermostat cap (4) and
water inlet pipe (5).
7) Remove water inlet pipe with thermostat cap from thermo-
stat case.
8) Remove thermostat.
INSPECTION
Make sure that air bleed valve (1) of thermostat is clean.
Should this valve be clogged, engine would tend to overheat.
Check to make sure that valve seat is free from foreign mat-
ters which would prevent valve from seating tight.
Check thermostat seal (2) for breakage, deterioration or any
other damage.

ENGINE FUEL 6C-3
PRECAUTIONS
WARNING:
Before attempting service of any type on fuel system, the
followings should be always observed in order to reduce
the risk or fire and personal injury.
Disconnect negative cable at battery.
Do not smoke, and place no smoking signs near work
area.
Be sure to have CO
2 fire extinguisher handy.
Be sure to perform work in a well-ventilated area and
away from any open flames (such as gas hot heater).
Wear safety glasses.
To relieve fuel vapor pressure in fuel tank, remove fuel
filler cap from fuel filler neck and then reinstall it.
As fuel feed line is still under high fuel pressure even
after engine was stopped, loosening or disconnecting
fuel feed line directly may cause dangerous spout of
fuel to occur where loosened or disconnected.
Before loosening or disconnecting fuel feed line, make
sure to relieve fuel pressure “FUEL PRESSURE
RELIEF PROCEDURE” in Section 6.
A small amount of fuel may be released after the fuel
line is disconnected. In order to reduce the chance of
personal injury, cover the fitting to be disconnected
with a shop cloth. Be sure to put that cloth in an
approved container when disconnection is completed.
Note that fuel hose connection varies with each type of
pipe. Be sure to connect and clamp each hose cor-
rectly referring to the figure.
[A] : With short pipe, fit hose as far as it reaches pipe joint as shown.
[B] : With the following type pipe, fit hose as far as its peripheral projection as shown.
[C] : With bent pipe, fit hose as far as its bent part as shown or till depth “b”.
[D] : With straight pipe, fit hose till depth “b”.
[E] : With red marked pipe, fit hose end reaches red mark on pipe.
1. Pipe
2. Hose
3. Clamp
4. Ped mark
“a” : Clamp securely at a position 3 to 7 mm (0.12 – 0.27 in.) from hose end.
“b” : 20 to 30 mm (0.79 – 1.18 in.)
“c” : 0 to 5 mm (0 – 0.19 in.)

6C-4 ENGINE FUEL
FUEL LINES
INSPECTION
Visually inspect fuel lines for evidence of fuel leakage, hose crack
and deterioration, or damage.
Make sure all clamps are secure.
Replace parts as needed.
FUEL PIPE
REMOVAL
1) Relieve fuel pressure in fuel feed line according to “FUEL
PRESSURE RELIEF PROCEDURE” in Section 6.
2) Disconnect negative cable at battery.
3) Disconnect fuel pipe joint and fuel hose from fuel pipe at the
front and rear of each fuel pipe.
For quick joint (2), disconnect it as follows :
a) Remove mud, dust and/or foreign material between pipe (1)
and joint by blowing compressed air.
b) Unlock joint lock by inserting special tool between pipe and
joint.
Special tool
(A) : 09919-47020
c) Disconnect joint (2) from pipe (1). CAUTION:
Due to the fact that fuel feed line (1) is under high pres-
sure, use special care when servicing it.
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WARNING:
A small amount of fuel may be released after fuel hose is
disconnected. In order to reduce the chance of personal
injury, cover hose and pipe to be disconnected with a
shop cloth.
Be sure to put that cloth in an approved container when
disconnection is completed.

ENGINE FUEL 6C-5
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).
INSTALLATION
1) Install clamps to marked location on pipes. If clamp is
deformed or 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.
4) With engine OFF, turn ignition switch to ON position and
check for fuel leaks.
FUEL FILLER CAP
INSPECTION
Remove cap (1), and check gasket for even filler neck imprint,
and deterioration or any damage. If gasket (2) is in malcondition,
replace cap.
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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.
NOTE:
If cap requires replacement, only a cap with the same fea-
tures should be used. Failure to use correct cap can
result in critical malfunction of system.

ENGINE FUEL 6C-7
INSTALLATION
1) Install fuel tank inlet valve (1) to fuel tank.
2) Install fuel filler hose (1) to fuel tank and secure it with clamp
(2).
For proper installation, refer to “COMPONENTS” under “ON-
VEHICLE SERVICE”.
3) Lower vehicle and install fuel filler cap.
FUEL TANK
REMOVAL
1) Relieve fuel pressure in fuel feed line according to “FUEL
PRESSURE RELIEF PROCEDURE” in Section 6.
2) Disconnect negative cable at battery.
3) Hoist vehicle.
4) Disconnect fuel filler hose (1) and breather hose (2) from
filler neck (3).
5) 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.
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2
WARNING:
Before starting the following procedure, be sure to
observe “PRECAUTIONS”.
CAUTION:
Never disconnect fuel filler hose (1) from fuel tank inlet. If
half or more of fuel is remaining to fuel tank, fuel over
flows in this case and come out.
CAUTION:
Do not force pump hose into fuel tank, or pump hose
may damage fuel tank inlet valve.
Never drain or store fuel in an open container due to
possibility of fire or explosion.
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3

ENGINE FUEL 6C-9
FUEL TANK PURGING PROCEDURE
The following procedure is used for purging fuel tank.
1) After removing fuel tank, remove all hoses, pipes, fuel pump
assembly from fuel tank.
2) Drain all remaining fuel from tank.
3) Move 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 remaining water after washing.
INSTALLATION
1) If parts have been removed from fuel tank, install them
before installing fuel tank to vehicle.
2) Raise fuel tank (1) with jack and connect connector of fuel
pump and gauge and clamp wire harness.
3) Install fuel tank to vehicle.
Tightening torque
Fuel tank bolt (a) : 23 N·m (2.3 kg-m, 17.0 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) : 1.5 N·m (0.15 kg-m, 1.0 lb-ft) WARNING:
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 fuel tank after washing, or fuel
tank inside will get corrosion.
(a) (a)
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6C-10 ENGINE FUEL
5) Connect fuel feed hose (1) and vapor hose (2) to each pipe
as shown in figure and clamp them securely.
6) Connect negative cable at battery.
With engine OFF, turn ignition switch to ON position and
check for fuel leaks.
FUEL PUMP ASSEMBLY
REMOVAL
1) Remove fuel tank from vehicle. Refer to “FUEL TANK”.
2) Disconnect fuel breather hose (1), fuel vapor hose (2) and
pipes from fuel pump assembly.
When disconnecting joint of fuel feed line (3) from pipe,
unlock joint by inserting special tool between pipe and joint
lock first.
Special tool
(A) : 09919-47020 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).
WARNING:
Refer to the PRECAUTIONS at the beginning of ON-VEHI-
CLE SERVICE.
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6C-12 ENGINE FUEL
DISASSEMBLY AND REASSEMBLY
Disassemble and reassemble fuel pump assembly, noting the fol-
lowings.
When removing fuel level sensor (3), press snap-fit part (4)
and slide it in the arrow direction as shown in figure.
When installing fuel level sensor to housing, fit fuel level sen-
sor securely.
“A” : Apply oil 5. O-ring 10. Fuel pressure regulator
1. Fuel filter assembly (including check valve) 6. Fuel level sensor (Fuel sender gauge) 11. Gasket
2. Grommet 7. Fuel pump 12. Fuel pump plate
3. Tube 8. Cushion Do not reuse.
4. Housing 9. Bracket
CAUTION:
While removing fuel level gauge, do not contact resis-
tor plate (1) or deform arm (2). It may cause fuel level
gauge to fail.
When removing grommet from fuel tube or bracket sub
assembly, be very careful not to cause damage to
grommet installed section (sealed section in bore).
Should it be damaged, replace it with new one, or fuel
will leak from that part.