2000 SUZUKI SWIFT emission

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.

1
2
1. SUZUKI scan tool display
2. EGR valve opening (0: Close, 100: Full Open)
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-35
2) Connect battery (1) to radiator fan motor coupler (2) as shown
in figure, then check that the radiator fan motor operates
smoothly.
If radiator fan motor does not operate smoothly, replace motor.
EMISSION CONTROL SYSTEM
EGR SYSTEM
System Inspection (using SUZUKI scan tool)
1) Connect SUZUKI scan tool to DLC with ignition switch OFF.
2) Turn ignition switch ON and then select “DATA LIST” mode on
scan tool.
3) Make sure that vehicle condition is as following.

Vehicle speed = 0 KPH

Engine coolant temp.
80C

Engine speed  3000 rpm
4) Clear DTC by using “CLEAR INFO” mode.
5) With engine idling (without depressing accelerator pedal), open
EGR valve by using “STEP EGR” mode in “MISC TEST” menu.
In this state, according as EGR valve opening increases engine
idle speed drops. If not, possible cause is clogged EGR gas pas-
sage, stuck or faulty EGR valve, poor performance of ECT sen-
sor or TP sensor or DTC and / or pending DTC is (are) stored in
ECM memory.
Removal
1) Disconnect negative cable at battery.
2) Disconnect EGR valve coupler.
3) Remove EGR valve and gasket from intake manifold.

6E2-36 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
1. EGR valve
2. Connector
1
2
1. EGR valve
2. Valve
3. Valve seat3
Inspection
1) Check resistance between following terminals of EGR valve in
each pair.
Terminal
Standard resistance
A – B
C – B
F – E
D – E
20 – 24 Ω
If found faulty, replace EGR valve assy.
2) Remove carbon from EGR valve gas passage.
NOTE:
Do not use any sharp–edged tool to remove carbon.
Be careful not to damage or bend EGR valve, valve seat and
rod.
3) Inspect valve, valve seat and rod for fault, cracks, bend or other
damage.
If found faulty, replace EGR valve assembly.
Installation
Reverse removal procedure noting following.

Clean mating surface of valve and intake manifold.

Use new gasket.
EVAPORATIVE EMISSION CONTROL SYSTEM
EVAP Canister Purge 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)
and that parking brake lever is pulled all the way up.

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-37
1) Disconnect purge hose (1) from EVAP canister.
2) Place finger against the end of disconnected hose and check
that vacuum is not felt there when engine is cool and running at
idle speed.
3) Connect purge hose to EVAP canister and warm up engine to
normal operating temperature.
4) Disconnect purge hose from EVAP canister.
5) Also check that vacuum is felt when engine is running at idle
speed.
NOTE:
The EVAP canister purge system does not perform purging
(vacuum is not detected at the purge hose) unless the en-
gine is sufficiently warmed up and the heated oxygen sen-
sor is activated fully. Also, when the purge hose is discon-
nected in Step 4), the air is drawn into the purge line. As a
result, ECM (PCM) detects a change in the purge gas con-
centration and sometimes stops purging but this indicates
nothing abnormal.
If check result is not satisfactory, check vacuum passage, hoses,
EVAP canister purge valve, wire harness and ECM (PCM).
Vacuum Passage Inspection
Start engine and run it at idle speed. Disconnect vacuum hose (1)
from EVAP canister purge valve (2). With finger placed against
hose disconnected, check that vacuum is applied.
If it is not applied, clean vacuum passage by blowing compressed
air.
Vacuum Hose Inspection
Check hoses for connection, leakage, clog and deterioration. Re-
place as necessary.
EVAP Canister Purge Valve Inspection
Check EVAP canister purge valve referring to step 1 of DTC P0443
Flow Table.
If found malfunction, replace.

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).

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-39
09930-88530
Injector test lead09931-76011
SUZUKI scan tool (Tech 1A) kit
Mass storage cartridge
09931-76030
16 / 14 pin DLC cable1. Pressure gauge
09912-58441
2. Pressure hose
09912-58431
3. 3-way joint & hose
09912-58490
4. Checking tool set
09912-58421
4-1. Tool body & washer
4-2. Body plug
4-3. Body attachment-1
4-4. Holder
4-5. Return hose & clamp
4-6. Body attachment-2 & washer
4-7. Hose attachment-1
4-8. Hose attachment-2
1. Storage case
2. Operator’s manual
3. Tech 1A
4. DLC cable (14 / 26 pin,
09931-76040)
5. Test lead / probe
6. Power source cable
7. DLC cable adaptor
8. Self-test adaptor
SPECIAL TOOLS
TIGHTENING TORQUE SPECIFICATIONS
FasteningpartsTightening torqueFastening artsN.mkg-mlb-ft
TP sensor mounting screw20.21.5
IAC valve3.30.332.5
ECT sensor121.29.0
Heated oxygen sensor-1 and -2454.532.5
Camshaft position sensor90.96.5

1. Malfunction indicator lamp (MIL)
2. Data link connector (DLC)
3. SUZUKI scan tool (Tech-1)
AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-11
DIAGNOSIS
This vehicle is equipped with an electronic transmission control system, which control the automatic shift up and
shift down timing, etc. suitably to vehicle driving conditions.
PCM (ECM) has an On-Board Diagnosis System which detects a malfunction in this system and abnormality of
those parts that influence the engine exhaust emission.
When diagnosing a trouble in transmission including this system, be sure to have full understanding of the outline
of “ON-BOARD DIAGNOSTIC SYSTEM” and each item in “PRECAUTION IN DIAGNOSING TROUBLE” and
execute diagnosis according to “AUTOMATIC TRANSMISSION DIAGNOSTIC FLOW TABLE” given below to ob-
tain correct result smoothly.
ON-BOARD DIAGNOSTIC SYSTEM
For automatic transmission control system, PCM (ECM) has follow-
ing functions. Refer to Section 6 or 6-1 for details.

When ignition switch is turned ON with engine at a stop malfunc-
tion indicator lamp (MIL) turns ON to check bulb of MIL.

When PCM detects a malfunction in A / T control system (and / or
a malfunction which gives an adverse effect to vehicle emission)
while engine is running, it makes malfunction indicator lamp in
meter cluster of instrument panel turn ON and stores malfunction
area (DTC) in its memory.
If it detects that continuously 3 driving cycles are normal after de-
tecting a malfunction, however, it makes MIL turn OFF although
DTC stored in its memory will remain.

It is possible to communicate with PCM through data link connect-
er (DLC) by using SUZUKI scan tool (Tech-1).
(Diagnostic information can be checked and erased by using a
scan tool)
2 Driving Cycle Detection Logic
Refer to Section 6 or 6-1 for details.
Freeze Frame Data
Refer to Section 6 or 6-1 for details.

0.5TIME (sec.) Ignition switch ON
High Immobilizer
control system
is normal
Immobilizer
control system
is abnormalLow
0.5 0.5 0.5 0.5
High
Low
8G-4 IMMOBILIZER CONTROL SYSTEM
ON-BOARD DIAGNOSTIC SYSTEM
(SELF-DIAGNOSIS FUNCTION)
Immobilizer Control Module & ECM diagnose troubles which may
occur in the area including the following parts when the ignition
switch is ON.
ECM:
ECM/Immobilizer Immobilizer
Control Module Control
code Module:
Transponder code

Data link connector
Coil antenna
wire
ECM/Immobilizer

ECM Control Module
code

Data link
connector wire

Immobilizer
Control Module

Ignition signal

With the diagnosis switch terminal of monitor coupler for ECM not
grounded, the ignition switch turned ON (but the engine at stop) and
regardless of the condition of the engine and emission control sys-
tem, ECM indicates whether a trouble has occurred in the immobi-
lizer control system or not by causing the malfunction indicator lamp
to flash or turn ON.
Malfunction indicator lamp is ON:
No trouble exists in the immobilizer control system.
Malfunction indicator lamp is flashing:
ECM or Immobilizer Control Module has detected some trouble in
the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM and Immobi-
lizer Control Module diagnose if a trouble has occurred in the
immobilizer control system. While the diagnosis is being
made, the malfunction indicator lamp stays ON and if the diag-
nosis result is “abnormal”, it immediately changes to flashing
but if the result is “normal”, it remains ON. Diagnosis takes
about 3 seconds at maximum.