2000 SUZUKI SWIFT warning

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.

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

2.297 – 2.595
0.298 – 0.320
6E2-30 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
ENGINE COOLANT TEMPERATURE SENSOR
(ECT SENSOR)
Removal
1) Disconnect battery negative cable at battery.
2) Drain coolant referring to Section 6B.
WARNING:
To help avoid danger of being burned, do not remove ra-
diator cap while engine and radiator are still hot.
Scalding fluid and steam can be blown out under pres-
sure if cap is taken off too soon.
3) Disconnect coupler from ECT sensor.
4) Remove ECT sensor (1) from thermostat case.
Inspection
Immerse temperature sensing part of ECT sensor (1) in water (or
ice) and measure resistance between terminal “A” and “B” while
heating water gradually.
If measured resistance doesn’t show such characteristic as shown
in left figure, replace ECT sensor (1).
Installation
Reverse removal procedure noting the following:

Clean mating surfaces of ECT sensor (1) and thermostat case.

Check O-ring for damage and replace if necessary.

Tighten ECT sensor (1) to specified torque.
Tightening Torque
(a): 12 N
.m (1.2 kg-m, 9.0 lb-ft)

Connect coupler to ECT sensor (1) securely.

Refill coolant referring to Section 6B.

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-31
1. Viewed from terminal side
Sensor-1
Sensor-2
“VB”
“GND”
HEATED OXYGEN SENSOR (Sensor-1 and Sensor-2)
Oxygen Sensor Heater Inspection
1) Disconnect sensor coupler.
2) Using ohmmeter, measure resistance between terminals “V
B”
and “GND” of sensor coupler.
NOTE :
Temperature of sensor affects resistance value largely.
Make sure that sensor heater is at correct temperature.
Resistance of oxygen sensor heater :
11.7 – 14.3 Ω at 20C, 68F
If found faulty, replace oxygen sensor.
3) Connect sensor coupler securely.
Removal
WARNING:
To avoid danger of being burned, do not touch exhaust sys-
tem when system is hot. Oxygen sensor removal should be
performed when system is cool.
1) Disconnect negative cable at battery.
2) For sensor-1, disconnect coupler of heated oxygen sensor and
release its wire harness from clamps and remove exhaust man-
ifold cover (1).
3) For sensor-2, disconnect coupler of heated oxygen sensor and
release its wire harness from clamp and hoist vehicle.
4) Remove heated oxygen sensor (2) from exhaust manifold or ex-
haust pipe.
Installation
Reverse removal procedure noting the following.

Tighten heated oxygen sensor (2) to specified torque.
Tightening Torque for heated oxygen sensor
(a): 45 N·m (4.5 kg-m, 32.5 lb-ft)

Connect coupler of heated oxygen sensor (2) and clamp wire har-
ness securely.

After installing heated oxygen sensor (2), start engine and check
that no exhaust gas leakage exists.

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.

6E2-38 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
EVAP Canister Inspection
WARNING:
DO NOT SUCK nozzles on EVAP canister. Fuel vapor inside
EVAP canister is harmful.
1) Check outside of EVAP canister visually.
2) Disconnect vacuum hoses from EVAP canister.
3) Check that there should be no restriction of flow through purge
pipe (2) and air pipe (3) when air is blown (4) into tank pipe (1).
If any faulty condition is found in above inspection replace.
PCV SYSTEM
NOTE:
Be sure to check that there is no obstruction in PCV valve or
its hoses before checking IAC duty, for obstructed PCV valve
or hose hampers its accurate adjustment.
PCV Hose Inspection
Check hoses for connection, leakage, clog and deterioration.
Replace as necessary.
PCV Valve Inspection
1) Disconnect PCV valve (1) from cylinder head cover and install
plug to head cover hole.
2) Run engine at idle.
3) Place your finger over end of PCV valve (1) to check for vacuum.
If there is no vacuum, check for clogged valve. Replace as nec-
essary.
4) After checking vacuum, stop engine and remove PCV valve (1).
Shake valve and listen for the rattle of check needle inside the
valve. If valve does not the rattle, replace valve.
5) After checking, remove plug and install PCV valve (1).

6F
IGNITION SYSTEM 6F-1
GENERAL DESCRIPTION6F- 1 . . . . . . . . . . . . . .
DIAGNOSIS6F- 3 . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE6F- 5 . . . . . . . . . . . . . . . .
Ignition Spark Test 6F- 5. . . . . . . . . . . . . . . . . . . .
High-Tension Cords 6F- 5. . . . . . . . . . . . . . . . . . .
Spark Plugs 6F- 6. . . . . . . . . . . . . . . . . . . . . . . . .
Noise Suppressor 6F- 6. . . . . . . . . . . . . . . . . . . . Ignition Coil 6F- 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Igniter 6F- 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Distributor 6F- 8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Timing 6F- 9. . . . . . . . . . . . . . . . . . . . . . .
Distributor Unit 6F-10. . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS6F-11 . . . . . . . . . . . . . . . . . . . . . .
The ignition system used for this vehicle has an elec-
tronic ignition control system and consists of the fol-
lowing parts.

ECM
It detects the engine condition through the signals
from the sensors, determines the most suitable igni-
tion timing and time for electricity to flow to the pri-
mary coil and sends a signal to the power unit.

Power unit (Igniter)
It turns ON and OFF the primary current of the igni-
tion coil according to the signal from ECM.

Ignition coil
When the ignition coil primary current is turned OFF,
a high voltage is induced in the secondary winding.

Distributor
It distributes a high voltage current to each plug.
High-tension cords and spark plugs.

CMP sensor (Camshaft position Sensor)
Located in the distributor, it converts the crank angle
into voltage variation and sends it to ECM. For its
details, refer to Section 6E1.

TP sensor, ECT sensor and MAP sensor
For their details, refer to Section 6E.
In electronic ignition control system, the ECM is pro-
grammed for the best ignition timing under every en-
gine condition. Receiving signals which indicate the
engine condition from the sensors, e.g., engine revo-
lution, intake air pressure, coolant temperature, etc.,
it selects the most suitable ignition timing from its
memory and operates the power unit.
Thus ignition timing is controlled to yield the best en-
gine performance.
For more information, refer to Section 6E1.
SECTION 6F
IGNITION SYSTEM
WARNING:
For vehicles equipped with a Supplemental Inflatable Restraint Air Bag System:

Service on or around Air Bag System Components or Wiring must be performed only by an authorized
Suzuki dealer. Please observe all WARNINGS and SERVICE PRECAUTIONS in Section 9J under “On-
Vehicle Service” and the Air Bag System Component and Wiring Location view in Section 9J before
performing service on or around Air Bag System Components or Wiring. Failure to follow WARNINGS
could result in unintended air bag deployment or could render the air bag inoperative. Either of these
two conditions may result in severe injury.

SDM can maintain sufficient voltage to cause a deployment of air bags for up to 10 seconds after igni-
tion switch is turned to “LOCK” position, battery is disconnected or fuse powering SDM is removed.
Work must be started after 15 seconds from the time.
CONTENTS
GENERAL DESCRIPTION

1. Injector coupler
2. Throttle body
3. Air cleaner case
4. Cylinder head cover
1. High-tension code 2. Cap
1. High-tension
cord
2. Ohmmeter
IGNITION SYSTEM 6F-5
ON-VEHICLE SERVICE
IGNITION SPARK TEST
1) Disconnect injector coupler at throttle body side.
WARNING:
Without disconnection of injector coupler, combustible gas
may come out from spark plug holes during this test and
may get ignited in engine room.
2) Remove spark plugs and connect them to high-tension cords,
and then ground spark plugs.
3) Crank engine and check if each spark plug sparks.
4) If no spark is emitted, inspect high-tension cords, spark plugs,
ignition coil, distributor, etc.
HIGH-TENSION CORDS
1) Remove high-tension cord at ignition coil while gripping its cap.
2) Remove distributor cap installed with high-tension cords.
3) Remove high-tension cord clamp from cylinder head cover.
4) Pull out high-tension cords from spark plugs while gripping each
cap.
CAUTION:

Removal of high-tension cords together with clamps
will be recommended so as not to damage their inside
wire (resistive conductor).

For the same reason, pull out each connection by grip-
ping cap portion.
5) Measure resistance of high-tension cord by using ohmmeter.
High-tension cord resistance: 10 – 22 kΩ/ m (3.0 – 6.7 kΩ/ft)