2000 SUZUKI SWIFT valve

6E1-34 ENGINE AND EMISSION CONTROL SYSTEM
FUEL CUT OPERATION
INSPECTION
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 injec-
tor 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
Check system for operation referring to Flow Table B-7 in Section
6.
If radiator fan fails to operate properly, check relay, radiator fan
and electrical circuit.
RADIATOR FAN RELAY NO. 2 AND NO.3
INSPECTION
1) Disconnect negative cable at battery.
2) Remove relay(s) from connector(s).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.
WARNING:
Keep hands, tools, and clothing away from engine cool-
ing 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.
1. Radiator fan relay No. 2
2. Radiator fan relay No. 3
1
2

6E1-36 ENGINE AND EMISSION CONTROL SYSTEM
OUTPUT SIGNALS OF THROTTLE VALVE OPENING
AND ENGINE COOLANT TEMP. (VEHICLE WITH A/T
ONLY)
THROTTLE VALVE OPENING SIGNAL INSPECTION
Check throttle valve opening (throttle position) signal referring to
step 1 of DTC P1700 (No.32 or 33) Flow Table in Section 7B. If
check result is not satisfactory, check each wire harness, circuit
connections and TP sensor.
ENGINE COOLANT TEMP. SIGNAL INSPECTION
Check engine coolant temp. signal referring to step 1 of DTC
P1705 (NO.51) Flow Table in Section 7B.
If check result is not satisfactory, check each wire harness, circuit
connection and ECT sensor.
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 km/h (0 KPH)
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 passage, stuck or faulty EGR valve, poor
performance of ECT sensor or TP sensor or DTC and/or
pending DTC is (are) stored in ECM memory.
REMOVAL
1) Disconnect negative cable at battery.
2) Remove air intake pipe.
3) Remove EGR pipe.
4) Disconnect EGR valve connector.
5) Remove EGR valve and gasket from intake manifold.
1. SUZUKI scan tool display
2. EGR valve opening (0: Close, 100: Full Open)

ENGINE AND EMISSION CONTROL SYSTEM 6E1-37
INSPECTION
1) Check resistance between following terminals of EGR valve
(1) in each pair.
If found faulty, replace EGR valve assembly.
EGR valve resistance
2) Remove carbon from EGR valve gas passage.
3) Inspect valve (2), 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 gaskets.
EVAPORATIVE EMISSION CONTROL SYSTEM
EVAP CANISTER PURGE INSPECTION
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.Terminal Standard resistance
A – B
C – B
F – E
D – E 20 – 24
Ω
NOTE:
Do not use any sharp–edged tool to remove carbon.
Be careful not to damage or bend EGR valve (1), valve
seat (3) and rod.
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.

6E1-38 ENGINE AND EMISSION CONTROL SYSTEM
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.
If check result is not satisfactory, check vacuum passage,
hoses, EVAP canister purge valve, wire harness and ECM.
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.
Replace 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.NOTE:
The EVAP canister purge system does not perform purg-
ing (vacuum is not detected at the purge hose) unless the
engine is sufficiently warmed up and the heated oxygen
sensor is activated fully. Also, when the purge hose is
disconnected in Step 4), the air is drawn into the purge
line. As a result, ECM detects a change in the purge gas
concentration and sometimes stops purging but this
indicates nothing abnormal.

ENGINE AND EMISSION CONTROL SYSTEM 6E1-39
EVAP CANISTER INSPECTION
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 (1) and air pipe (2) when air is blown (4) into tank
pipe (3).
If any faulty condition is found in above inspection, replace.
PCV SYSTEM
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 vac-
uum.
If there is no vacuum, check for clogged valve. Replace as
necessary. WARNING:
DO NOT SUCK nozzles on EVAP canister. Fuel vapor
inside EVAP canister is harmful.
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.

6E1-40 ENGINE AND EMISSION CONTROL SYSTEM
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).
SPECIAL TOOL
09912-58441 09912-58431 09912-58490 09912-58421
Pressure gauge Pressure hose 3-way joint & hose Checking tool set
(See NOTE “A”.)
09912-57610 09930-88530 09931-76011
Checking tool plate Injector test lead Tech 1A kit
(See NOTE “B”.)Mass storage cartridge

ENGINE AND EMISSION CONTROL SYSTEM 6E1-41
TIGHTENING TORQUE SPECIFICATION
09931-76030
16/14 pin DLC cable
NOTE:
“A”: This kit includes the following items.
1. Tool body & washer, 2. Body plug, 3. Body attachment-1, 4. Holder, 5. Return hose & clamp,
6. Body attachment-2 & washer, 7. Hose attachment-1, 8. Hose attachment-2
“B”: This kit includes the following items.
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
Fastening partTightening torque
Nm kg-m lb-ft
TP sensor mounting screw 2.5 0.25 1.8
IAC valve 3.5 0.35 2.5
ECT sensor 15 1.5 11.5
Heated oxygen sensor-1 and -2 45 4.5 32.5
Camshaft position sensor 10 1.0 7.5