2000 SUZUKI SWIFT RG413 Service Workshop Manual

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

IGNITION SYSTEM (ELECTRONIC IGNITION SYSTEM) 6F1-1
6G
6F2
6G
6H
6K
6F1
7A
7A1
7A1
7D
7E
7F
8A
8B
8C
8D
8E
9
10
10A
10B
SECTION 6F1
IGNITION SYSTEM
(ELECTRONIC IGNITION SYSTEM)
CONTENTS
GENERAL DESCRIPTION ............................. 6F1-2
DIAGNOSIS .................................................... 6F1-3
ON-VEHICLE SERVICE ................................. 6F1-5
IGNITION SPARK TEST ............................. 6F1-5
HIGH-TENSION CORDS ............................ 6F1-5
SPARK PLUGS ........................................... 6F1-6IGNITION COIL ASSEMBLY
(INCLUDING IGNITOR) .............................. 6F1-7
CRANKSHAFT POSITION SENSOR
(CKP SENSOR) .......................................... 6F1-7
IGNITION TIMING ...................................... 6F1-8
SPECIAL TOOL ............................................. 6F1-9

WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).

6F1-2 IGNITION SYSTEM (ELECTRONIC IGNITION SYSTEM)
GENERAL DESCRIPTION
The ignition system is an electronic (distributorless) ignition system. Its consists of the parts as described below
and has an electronic ignition control system.
ECM
It detects the engine and vehicle conditions through the signals from the sensors, determines the most suit-
able ignition timing and time for electricity to flow to the primary coil and sends a signal to the ignitor (power
unit) in the ignition coil assembly.
Ignition coil assembly (including an igniter)
The ignition coil assembly has a built-in ignitor which turns ON and OFF the current flow to the primary coil
according to the signal from ECM. When the current flow to the primary coil is turned OFF, a high voltage is
induced in the secondary coil.
High tension cords and spark plugs.
CMP sensor (Camshaft position sensor) and CKP sensor (Crankshaft position sensor)
Using signals from these sensors, ECM identifies the specific cylinder whose piston is in the compression
stroke, detects the crank angle and adjusts initial ignition timing automatically.
TP sensor, ECT sensor, MAP sensor and other sensors/switches
Refer to Section 6E1 for details.
Although this ignition system does not have a distributor, it has two ignition coil assemblies (one is for No.1 and
No.4 spark plugs and the other is for No.2 and No.3 spark plugs). When an ignition signal is sent from ECM to
the ignitor in the ignition coil assembly for No.1 and No.4 spark plugs, a high voltage is induced in the secondary
coil and that passes through the high-tension cords and causes No.1 and No.4 spark plugs to spark simulta-
neously. Likewise, when an ignition signal is sent to the ignitor in the other ignition coil assembly, No.2 and No.3
spark plugs spark simultaneously.
SYSTEM COMPONENTS
1. ECM 6. MAP sensor 11. Transmission range switch (A/T)
2. Ignition coil assembly for No.1 and No.4 spark plugs 7. ECT sensor 12. High-tension cords
3. Ignition coil assembly for No.2 and No.3 spark plugs 8. IAT sensor 13. Monitor connector
4. CMP sensor 9. TP sensor 14. Knock sensor (if equipped)
5. CKP sensor 10. VSS 15. Data link connector