2006 SUZUKI SWIFT air idle valve

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-107
DTC P0327 / P0328: Knock Sensor 1 Circuit Low / HighS7RS0B1104040
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 10 sec.
4) Check DTC by using scan tool. 11
Engine mechanical system check
1) Check engine mechanical parts or system which can
cause engine rough idle or poor performance.
• Engine compression (Refer to “Compression Check in Section 1D”.)
• Valve lash (Refer to “Valve Lash (Clearance) Inspection in Section 1D”.)
• Valve timing (Refer to “Timing Chain and Chain Tensioner Removal and Installation in Section 1D”.)
Are they in good condition? Check wire harness and
connection of ECM
ground, ignition system
and fuel injector for
intermittent open and
short.
Repair or replace
defective part.
Step
Action YesNo
E23 C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
1 2
REDC37-56
5 V
I4RS0A110031-01
1. Knock sensor
2. ECM
DTC detecting condition Trouble area
DTC P0327:
Voltage of knock sensor is less than 1.23 V for 0.5 seconds
continuously.
(1 driving cycle detection logic)
DTC P0328:
Voltage of knock sensor is 3.91 V or more for 0.5 seconds
continuously
(1 driving cycle detection logic) • Knock sensor circuit (open or short)
• Knock sensor
•ECM

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-117
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and a tester, on a level road.

NOTE
Check to make sure that following conditions ar e satisfied when using this “DTC confirmation
procedure”.
• Intake air temperature at engine start: –10 °C (14 ° F) to 80 °C (176 °F)
• Intake air temperature: –10 °C (14 °F) to 70 °C (158 °F)
• Engine coolant temperature: 70 °C (158 °F) to 150 °C (302 °F)
• Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)

1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Run engine at idle for 10 min.
5) Drive vehicle and increase engine speed 3000 rpm in 3rd gear.
6) Release accelerator pedal and with engine brake applied, keep vehicle coasting for 5 sec. or more. (Keep fuel cut condition for 5 sec. or more) If fuel cut condition is not ke pt for 5 sec. or more, coast down a slope in engine speed
1000 – 3000 rpm for 5 sec. or more.
7) Stop vehicle and run engine at idle.
8) Check DTC and pending DTC by using scan tool.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
DTC P0401:
Difference in intake manifold absolute pressure between opened EGR valve
and closed EGR valve is smaller than specified value.
(*2 driving cycle detection logic, monitoring once per driving cycle)
DTC P0402:
Difference in intake manifold absolute pressure between opened EGR valve
and closed EGR valve is la rger than specified value.
(*2 driving cycle detection logic, monitoring once per driving cycle) •EGR valve
• EGR passage
• MAP sensor
•ECM
Step
Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Do you have SUZUKI scan tool? Go to Step 3.Go to Step 5.

Downloaded from www.Manualslib.com manuals search engine 1A-216 Engine General Information and Diagnosis:
Repair Instructions
Idle Speed and IAC Throttle Valve Opening
Inspection
S7RS0B1106001
Before idle speed check, make sure of the following.
• Lead wires and hoses of electronic fuel injection and engine and emission control systems are connected
securely.
• Valve lash is checked according to maintenance schedule.
• Ignition timing is within specification.
• All accessories (wipers, heater, lights, A/C, etc.) are out of service.
• Air cleaner has been properly installed and is in good condition.
• No abnormal air drawn in from air intake system.
After all items are confirmed, check idle speed and IAC
duty as follows.
NOTE
Before starting engine, place transmission
gear shift lever in “Neutral” (shift selector
lever to “P” range for A/T vehicle), and set
parking brake and block drive wheels.

1) Connect SUZUKI scan tool to DLC (1) with ignition
switch turned OFF.
Special tool
(A): SUZUKI scan tool 2) Warm up engine to normal operating temperature.
3) Check engine idle speed and “IAC throttle opening”
by using “Data List” mode on scan tool to check “IAC
throttle opening”.
4) If check result is out of sp ecification, inspect electric
throttle body assembly referring to “Electric Throttle
Body Assembly On-Vehicle Inspection in Section
1C”.
Engine idle speed
A/C OFF: 700 ± 50 rpm (IAC duty: 5 – 55%)
A/C ON: 850 ± 50 rpm
5) Check that specified engine idle speed is obtained with A/C turned ON if vehi cle is equipped with A/C.
If not, check A/C system.
(A)
1
I4RS0B110093-01

Downloaded from www.Manualslib.com manuals search engine 1B-1 Aux. Emission Control Devices:
Engine
Aux. Emission Control Devices
Diagnostic Information and Procedures
EGR System InspectionS7RS0B1204001
1) Connect SUZUKI scan tool to data link connector (DLC) with ignition switch turned OFF.
2) Turn ON ignition switch and erase DTC using “CLEAR DTC” in “TROUBLE CODES” menu.
3) Start engine and warm it up to normal operating temperature, then select “DATA LIST” mode on scan
tool.
4) Make sure that vehicle condition is as follows.
• Vehicle speed = 0 km/h (0 KPH)
• Engine speed ≤ 900 rpm
• Engine coolant temp. ≥ 90 °C, 164 °F
5) With engine idling (without depressing accelerator pedal), open EGR valve by using “STEP EGR” mode
in “MISC TEST” menu. In this state, as EGR valve
opening increases engine idle speed drops. If not,
possible cause is clogged EGR gas passage, stuck
or faulty EGR valve.
Repair Instructions
EVAP Canister Purge InspectionS7RS0B1206001
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.

1) Disconnect purge hose (1) from EVAP canister (2).
2) Place finger against the end of disconne cted hose and check that vacuum is not felt there when engine is cool and
running at idle speed. If check result is not satisfacto ry, check EVAP canister purge valve, wire harness and ECM.
1. SUZUKI scan tool display
2. EGR valve opening (0: Close, 100: Full open)
Step EGR
Step EGR Flow Duty 21 %
Step EGR (con) 23%
Engine Speed 771 RPM
Desired Idle 698 RPM
IAC Flow Duty 20.0 %
Ignition Advance 11.5 BTDC
Closed Throttle Pos ON
1 2
I4RS0B120001-01
1
2
I6RS0C120001-01

Downloaded from www.Manualslib.com manuals search engine 1B-3 Aux. Emission Control Devices:
Vacuum Passage InspectionS7RS0B1206003
Start engine and run it at idle speed. Disconnect vacuum
hose (1) from EVAP canister purge valve (2). With finger
placed against disconnected hose, check that vacuum is
applied.
If it is not applied, clean vacuum passage by blowing
compressed air.
Vacuum Hose and Purge Valve Chamber
Inspection
S7RS0B1206004
Check hoses and purge valv e chamber for connection,
leakage, clog and deterioration.
Replace as necessary.
EVAP Canister Purge Valve InspectionS7RS0B1206005
WARNING!
Do not apply vacuum by mouth; otherwise
harmful fuel vapor can be breathed in.

CAUTION!
Do not apply vacuum more than –86 kPa (–
12.47 psi); otherwise EVAP canister purge
valve could be damaged.

1) With ignition switch turned OFF, disconnect coupler and vacuum hoses from canister purge valve.
2) Remove EVAP canister purge valve from air cleaner assembly.
3) Check resistance between two terminals of EVAP canister purge valve.
If resistance is not as specified, replace EVAP
canister purge valve.
EVAP canister purge valve resistance
30 – 34 Ω at 20 °C (68 °F) 4) With coupler disconnected, apply vacuum (–60 kPa
(–8.7 psi)) to pipe (1). If vacuum can be applied, go
to next step. If vacuum can not be applied, replace
EVAP canister purge valve.
5) In this state, connect 12 V-battery to EVAP canister purge valve terminals. If vacuum can not be applied,
EVAP canister purge valve is in good condition.
If applied, replace EVAP canister purge valve.
WARNING!
Do not suck the air through valve. Fuel vapor
inside valve is harmful.

Special tool
(A): 09917–47011
6) Install EVAP canister purge valve to air cleaner assembly.
I3RM0A120006-01
I3RM0A120008-01
1
1 (A)
(A)
I3RB0A120007-01

Downloaded from www.Manualslib.com manuals search engine 1B-5 Aux. Emission Control Devices:
PCV Valve InspectionS7RS0B1206010
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.

1) Detach air cleaner assembly.
2) Disconnect PCV valve from cylinder head cover and install plug to head cover hole.
3) Install air cleaner assembly temporarily.
4) Run engine at idle.
5) Place your finger over end of PCV valve (1) to check for vacuum.
If there is no vacuum, ch eck for clogged valve.
Replace as necessary. 6) After checking vacuum, stop engine and remove
PCV valve (1).
Shake valve and listen for rattle of check needle
inside the valve. If valve does not rattle, replace PCV
valve.
7) After checking, remove plug and install PCV valve.
8) Install air cleaner assembly securely.
Special Tools and Equipment
Special ToolS7RS0B1208001
I2RH0B120007-01
I2RH0B120008-01
09917–47011 SUZUKI scan tool
Vacuum pump gauge —
) / ) This kit includes following
items. 1. Tech 2, 2. PCMCIA
card, 3. DLC cable, 4. SAE
16/19 adapter, 5. Cigarette
cable, 6. DLC loop back
adapter, 7. Battery power
cable, 8. RS232 cable, 9.
RS232 adapter, 10. RS232
loop back connector, 11.
Storage case, 12. )

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-4
Targeted Timing Varying Operation
Diagnostic Information and Procedures
Compression CheckS7RS0B1404001
Check compression pressure on all 4 cylinders as
follows:
1) Warm up engine to normal operating temperature.
2) Stop engine after warming up.
NOTE
After warming up engine, place transaxle
gear shift lever in “Neutral”, and set parking
brake and block drive wheels.

3) Disconnect negative cable at battery.
4) Remove engine cover.
5) Remove air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
6) Remove cylinder head upper cover.
7) Disconnect ignition coil couplers (1).
8) Remove ignition coil assemblies (2) with high- tension cord (3).
9) Remove all spark plugs.
10) Disconnect fuel injector wires (4) at the coupler. Driving condition Valve timing Target of control Effect
Engine running at idle
speed Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Stabilization of the engine
rotation at idle speed.
Average engine load
range To the advanced
sideTo lengthen the valve opening overlap
in order to enhance the internal
exhaust gas recirculation and reduce
the pumping loss. Improvement of the fuel
efficiency.
Lowering of the exhaust
emission.
Light engine load
range To the retarded sideTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Keeping of the engine stability.
Low or average
engine speed range
with heavy engine
load To the advanced
side
To advance the closing timing of the
intake valve in order to improve the
volumetric efficiency. Improvement of generating the
engine torque at low and
average engine speed.
High engine speed
range with heavy
engine load To the retarded sideTo retard the closing timing of the
intake valve in order to improve the
volumetric efficiency. Improvement of generating the
engine power.
Low engine coolant
temperature Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to intake manifold and
reduce the fuel increasing.
To slow the fast idle speed of the
engine as a result of stabilizing the
engine idling. Stabilization of the fast idling of
the engine.
Improvement of the fuel
efficiency.
At engine starting and
stopping Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Improvement of start ability.I2RH0B140003-01

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-6
6) Connect special tool (Vacuum gauge) to PCV hose (1).
Special tool
(A): 09915–67311
7) Blind PCV valve (2) using tape (3) or the like.
8) Install air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
9) Run engine at specified idle speed and read vacuum gauge. Vacuum should be within specification.
Vacuum specification (at sea level)
59 – 73 kPa (45 – 55 cmHg, 17.7 – 21.6 in.Hg) at
specified idle speed
10) Remove air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
11) Disconnect special tool (vacuum gage) from PCV valve.
12) Detach blind cap from PCV valve, and connect PCV hose to PCV valve.
13) Install air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
14) Install engine cover.
Valve Lash (Clearance) InspectionS7RS0B1404003
1) Remove negative cable at battery.
2) Remove cylinder head cover referring to “Cylinder Head Cover Removal and Installation”.
3) Remove right side engine under cover, if necessary.
4) Using 17 mm wrench, turn crankshaft pulley (1) clockwise until cam lobes (2) become perpendicular
to shim faces (3) at valves “1” and “7” as shown in
the figure. 5) Check valve lashes with thickness gauge (4)
according to the following procedure.
a) Check valve lashes at valves “1” and “7”.
b) Turn camshafts by 90 ° (by turning crankshaft
with wrench).
c) Make sure that cam lobes are perpendicular to shim faces at valves to be checked (in this case,
“3” and “8”), if not, adjust it by turning crankshaft.
Check valve lashes.
d) In the same manner as b) – c), check valve
lashes at valves “4” and “6”.
e) In the same manner as b) – c) again, check valve lashes at valves “2” and “5”.
If valve lash is out of specification, record valve lash and
adjust it to specification by replacing shim.
Valve clearance specification
When cold (Coolant te mperature is 15 – 25 °C (59 –
77 °F)):
• Intake: 0.18 – 0.22 mm (0.007 – 0.009 in.)
• Exhaust: 0.28 – 0.32 mm (0.011 – 0.013 in.)
When hot (Coolant temperature is 60 – 68 °C (140 –
154 °F)):
• Intake: 0.21 – 0.27 mm (0.008 – 0.011 in.)
• Exhaust: 0.30 – 0.36 mm (0.012 – 0.014 in.)
(A)
13 2
I3RM0A140003-01
I3RM0A140004-01