Engine Mechanical SUZUKI SX4 2006 1.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 00
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Vo l u m e 1
Precautions............................................................... 00-i
Precautions ............................................................ 00-1
General Information ................................................... 0-i
General Information ............................................... 0A-1
Maintenance and Lubrication ................................. 0B-1
Engine ......................................................................... 1-i
Precautions .............................................................. 1-1
Engine General Information and Diagnosis ........... 1A-1
Aux. Emission Control Devices .............................. 1B-1
Engine Electrical Devices....................................... 1C-1
Engine Mechanical ................................................. 1D-1
Engine Lubrication System .................................... 1E-1
Engine Cooling System .......................................... 1F-1
Fuel System ...........................................................1G-1
Ignition System....................................................... 1H-1
Starting System ....................................................... 1I-1
Charging System.....................................................1J-1
Exhaust System ..................................................... 1K-1
Suspension ................................................................. 2-i
Precautions .............................................................. 2-1
Suspension General Diagnosis .............................. 2A-1
Front Suspension ................................................... 2B-1
Rear Suspension.................................................... 2C-1
Wheels and Tires ................................................... 2D-1
Driveline / Axle ........................................................... 3-i
Precautions .............................................................. 3-1
Drive Shaft / Axle ................................................... 3A-1
Differential .............................................................. 3B-1
Transfer .................................................................. 3C-1
Propeller Shafts...................................................... 3D-1
Brakes ......................................................................... 4-i
Precautions .............................................................. 4-1
Brake Control System and Diagnosis .................... 4A-1
Front Brakes........................................................... 4B-1
Rear Brakes ........................................................... 4C-1
Parking Brake......................................................... 4D-1
ABS ........................................................................ 4E-1
Transmission / Transaxle .......................................... 5-i
Precautions .............................................................. 5-1
Automatic Transmission/Transaxle ........................ 5A-1
Manual Transmission/Transaxle ............................ 5B-1
Clutch ..................................................................... 5C-1
Vo l u m e 2
Precautions ............................................................... 00-i
Precautions ............................................................ 00-1
Steering ....................................................................... 6-i
Precautions .............................................................. 6-1
Steering General Diagnosis ................................... 6A-1
Steering Wheel and Column .................................. 6B-1
Power Assisted Steering System ...........................6C-1
HVAC ........................................................................... 7-i
Precautions .............................................................. 7-1
Heater and Ventilation............................................ 7A-1
Air Conditioning System ......................................... 7B-1
Restraint ...................................................................... 8-i
Precautions .............................................................. 8-1
Seat Belts ............................................................... 8A-1
Air Bag System ...................................................... 8B-1
Body, Cab and Accessories ...................................... 9-i
Precautions .............................................................. 9-1
Wiring Systems ...................................................... 9A-1
Lighting Systems .................................................... 9B-1
Instrumentation / Driver Info. / Horn .......................9C-1
Wipers / Washers ...................................................9D-1
Glass / Windows / Mirrors ...................................... 9E-1
Security and Locks ................................................. 9F-1
Seats ..................................................................... 9G-1
Interior Trim ............................................................9H-1
Hood / Fenders / Doors .......................................... 9J-1
Body Structure ....................................................... 9K-1
Paint / Coatings ...................................................... 9L-1
Exterior Trim .......................................................... 9M-1
Control Systems ....................................................... 10-i
Precautions ............................................................ 10-1
Body Electrical Control System ............................ 10B-1
Immobilizer Control System .................................10C-1
Keyless Start System ........................................... 10E-1
TABLE OF CONTENTS

Downloaded from www.Manualslib.com manuals search engine Table of Contents 1-iii
EGR Valve Removal and Installation (If
Equipped).......................................................... 1B-4
EGR Valve Inspection (If Equipped) ................... 1B-4
PCV Hose Inspection .......................................... 1B-5
PCV Valve Inspection ......................................... 1B-5
Special Tools and Equipment ............................. 1B-5
Special Tool ........................................................ 1B-5
Engine Electrical Devices ....................... 1C-1
Repair Instructions .............................................. 1C-1
Engine Control Module (ECM) Removal and
Installation ......................................................... 1C-1
Manifold Absolute Pressure (MAP) Sensor
Inspection (If Equipped) .................................... 1C-2
Electric Throttle Body Assembly On-Vehicle
Inspection.......................................................... 1C-2
Electric Throttle Body System Calibration ........... 1C-5
Accelerator Pedal Position (APP) Sensor
Assembly On-Vehicle Inspection ...................... 1C-5
Accelerator Pedal Position (APP) Sensor
Assembly Removal and Installation .................. 1C-5
Accelerator Pedal Position (APP) Sensor
Assembly Inspection ......................................... 1C-6
Engine Coolant Temperature (ECT) Sensor
Removal and Installation................................... 1C-7
Engine Coolant Temperature (ECT) Sensor
Inspection.......................................................... 1C-7
Heated Oxygen Sensor (HO2S-1 and HO2S-
2) Heater On-Vehicle Inspection (If
Equipped).......................................................... 1C-8
Heated Oxygen Sensor (HO2S-1 and HO2S-
2) Removal and Installation (If Equipped) ......... 1C-8
Camshaft Position (CMP) Sensor Removal
and Installation .................................................. 1C-9
Camshaft Position (CMP) Sensor Inspection ...... 1C-9
Crankshaft Position (CKP) Sensor Removal
and Installation ................................................ 1C-10
Crankshaft Position (CKP) Sensor Inspection .. 1C-11
Knock Sensor Removal and Installation ........... 1C-11
Main Relay, Fuel Pump Relay, Starting Motor
Control Relay, Throttle Actuator Control
Relay and Radiator Cooling Fan Relay
Inspection........................................................ 1C-12
Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor On-Vehicle
Inspection........................................................ 1C-12
Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor Removal and
Installation ....................................................... 1C-13
Intake Air Temperature (IAT) Sensor
Inspection........................................................ 1C-13
Specifications..................................................... 1C-14
Tightening Torque Specifications ...................... 1C-14
Engine Mechanical .................................. 1D-1
General Description ............................................. 1D-1
Engine Construction Description ......................... 1D-1
Camshaft Position Control (VVT Variable
Valve Timing) System Description .................... 1D-3Diagnostic Information and Procedures ............1D-5
Compression Check ............................................1D-5
Engine Vacuum Check........................................1D-6
Valve Lash (Clearance) Inspection .....................1D-7
Repair Instructions ............................................1D-10
Air Intake System Components.........................1D-10
Air Cleaner Filter Removal and Installation .......1D-10
Air Cleaner Filter Inspection and Cleaning........1D-10
Air Cleaner Assembly Removal and
Installation .......................................................1D-11
Cylinder Head Cover Removal and
Installation .......................................................1D-11
Throttle Body and Intake Manifold
Components ....................................................1D-13
Throttle Body On-Vehicle Inspection.................1D-14
Electric Throttle Body Assembly Removal and
Installation .......................................................1D-14
Throttle Body Cleaning......................................1D-14
Intake Manifold Removal and Installation .........1D-15
Engine Mountings Components ........................1D-16
Engine Assembly Removal and Installation ......1D-17
Timing Chain Cover Components .....................1D-22
Timing Chain Cover Removal and Installation ..1D-23
Timing Chain Cover Inspection .........................1D-25
Oil Control Valve Removal and Installation
(For Engine with VVT) .....................................1D-26
Oil Control Valve Inspection (For Engine with
VVT) ................................................................1D-26
Timing Chain and Chain Tensioner
Components ....................................................1D-27
Timing Chain and Chain Tensioner Removal
and Installation ................................................1D-27
Timing Chain and Chain Tensioner Inspection ..1D-31
Camshaft, Tappet and Shim Components ........1D-32
Camshaft, Tappet and Shim Removal and
Installation .......................................................1D-33
Camshaft, Tappet and Shim Inspection ............1D-36
Valves and Cylinder Head Components ...........1D-39
Valves and Cylinder Head Removal and
Installation .......................................................1D-40
Valves and Cylinder Head Disassembly and
Assembly.........................................................1D-42
Valves and Valve Guides Inspection.................1D-45
Cylinder Head Inspection ..................................1D-47
Valve Spring Inspection ....................................1D-48
Pistons, Piston Rings, Connecting Rods and
Cylinders Components ....................................1D-49
Pistons, Piston Rings, Connecting Rods and
Cylinders Removal and Installation .................1D-49
Pistons, Piston Rings, Connecting Rods and
Cylinders Disassembly and Assembly ............1D-51
Cylinders, Pistons and Piston Rings
Inspection ........................................................1D-52
Piston Pins and Connecting Rods Inspection ...1D-54
Crank Pin and Connecting Rod Bearings
Inspection ........................................................1D-55
Main Bearings, Crankshaft and Cylinder
Block Components ..........................................1D-59
Main Bearings, Crankshaft and Cylinder
Block Removal and Installation .......................1D-60

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-5
General Description
Statement on Cleanliness and CareS6RW0D1101001
An automobile engine is a combination of many
machined, honed, polished and lapped surfaces with
tolerances that are measured in the thousands of an
millimeter (ten thousands of an inch).
Accordingly, when any internal engine parts are
serviced, care and cleanliness are important.
It should be understood that proper cleaning and
protection of machined surfaces and friction areas is part
of the repair procedure. This is considered standard
shop practice even if not specifically stated.
• A liberal coating of engine oil should be applied to
friction areas during assembly to protect and lubricate
the surfaces on initial operation.
• Whenever valve train components, pistons, piston
rings, connecting rods, rod bearings, and crankshaft
journal bearings are removed for service, they should
be retained in order.
At the time of installation, they should be installed in
the same locations and with the same mating
surfaces as when removed.
• Battery cables should be disconnected before any
major work is performed on the engine.
Failure to disconnect cables may result in damage to
wire harness or other electrical parts.
• The four cylinders of the engine are identified by
numbers; No.1 (1), No.2 (2), No.3 (3) and No.4 (4)
counted from crankshaft pulley side to flywheel side.
Engine Diagnosis General DescriptionS6RW0D1101002
NOTE
There are two types of OBD system
depending on the vehicle specification.
For identification, refer to “Precaution on On-
Board Diagnostic (OBD) System”.

This vehicle is equipped with an engine and emission
control system which are under control of ECM.
The engine and emission control system in this vehicle
are controlled by ECM. ECM has an On-Board
Diagnostic system which detects a malfunction in this
system and abnormality of those parts that influence the
engine exhaust emission. When diagnosing engine
troubles, be sure to have full understanding of the outline
of “On-Board Diagnostic System Description” and each
item in “Precautions in Diagnosing Trouble” and execute
diagnosis according to “Engine and Emission Control
System Check”.
There is a close relationship between the engine
mechanical, engine cooling system, ignition system,
exhaust system, etc. and the engine and emission
control system in their structure and operation. In case of
an engine trouble, even when the malfunction indicator
lamp (MIL) doesn’t turn ON, it should be diagnosed
according to “Engine and Emission Control System
Check”.
On-Board Diagnostic System DescriptionS6RW0D1101003
NOTE
There are two types of OBD system
depending on the vehicle specification.
For identification, refer to “Precaution on On-
Board Diagnostic (OBD) System”.

Euro OBD model
ECM in this vehicle has the following functions.
• When the ignition switch is turned ON with the engine
at a stop, malfunction indicator lamp (MIL) (1) turns
ON to check the circuit of the malfunction indicator
lamp (1).
• When ECM detects a malfunction which gives an
adverse effect to vehicle emission while the engine is
running, it makes the malfunction indicator lamp (1) in
the meter cluster of the instrument panel turn ON or
flash (flashing only when detecting a misfire which
can cause damage to the catalyst) and stores the
malfunction area in its memory.
(If it detects that continuously 3 driving cycles are
normal after detecting a malfunction, however, it
makes MIL (1) turn OFF although DTC stored in its
memory will remain.)
1
234
I3RM0A110001-01

Downloaded from www.Manualslib.com manuals search engine 1A-46 Engine General Information and Diagnosis:
Engine noise – Valve
noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.

Improper valve lash“Camshaft, Tappet and Shim Inspection in
Section 1D”
Worn valve stem and guide“Valves and Valve Guides Inspection in
Section 1D”
Weak or broken valve spring“Valve Spring Inspection in Section 1D”
Warped or bent valve“Valves and Valve Guides Inspection in
Section 1D”
Engine noise – Piston,
ring and cylinder noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.

Worn piston, ring and cylinder bore“Cylinders, Pistons and Piston Rings
Inspection in Section 1D”
Engine noise –
Connecting rod noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.

Worn piston, ring and cylinder bore“Cylinders, Pistons and Piston Rings
Inspection in Section 1D”
Worn rod bearing“Crank Pin and Connecting Rod Bearings
Inspection in Section 1D”
Worn crank pin“Crank Pin and Connecting Rod Bearings
Inspection in Section 1D”
Loose connecting rod nuts“Pistons, Piston Rings, Connecting Rods and
Cylinders Removal and Installation in Section
1D”
Low oil pressureCondition “Low oil pressure”
Engine noise –
Crankshaft noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is
used.
• Specified fuel is used.

Low oil pressureCondition “Low oil pressure”
Worn bearing“Main Bearings Inspection in Section 1D”
Worn crankshaft journal“Crankshaft Inspection in Section 1D”
Loose bearing cap bolts“Main Bearings, Crankshaft and Cylinder Block
Removal and Installation in Section 1D”
Excessive crankshaft thrust play“Crankshaft Inspection in Section 1D” Condition Possible cause Correction / Reference Item

Downloaded from www.Manualslib.com manuals search engine 1A-112 Engine General Information and Diagnosis:
DTC P0327 / P0328: Knock Sensor Circuit Low / HighS6RW0D1104040
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Start engine and run it for 10 sec.
4) Check DTC by using scan tool.11Engine 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 Yes No
E01C01
3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238 3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238
12
REDC01-56
5 V
I6RW0D110030-01
1. Knock sensor 2. ECM
DTC detecting condition Trouble area
DTC P0327:
Voltage of knock sensor is lower than specified value with engine
running.
(1 driving cycle detection logic)
DTC P0328:
Voltage of knock sensor is higher than specified value with
engine running.
(1 driving cycle detection logic)• Knock sensor circuit (open or short)
• Knock sensor
•ECM

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-1
Engine
Engine Mechanical
General Description
Engine Construction DescriptionS6RW0D1401001
The engine is water-cooled, in line 4 cylinders, 4 stroke cycle gasoline unit with its DOHC (Double overhead camshaft)
valve mechanism arranged for “V” type valve configuration and 16 valves (4 valves/one cylinder). The double
overhead camshaft is mounted over the cylinder head; it is driven from crankshaft through timing chain, and no push
rods are provided in the valve train system.
I5RW0C140032-01

Downloaded from www.Manualslib.com manuals search engine 1D-2 Engine Mechanical:
I5RW0C140033-01
[A]: For engine with VVT system [B]: For engine without VVT system

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-3
Camshaft Position Control (VVT Variable Valve Timing) System DescriptionS6RW0D1401002
System Description
The VVT system is an electronic control system which continuously vary and optimize the intake valve timing in
response to the engine operating condition.
The optimized intake valve timing produce such an air intake with high efficiency that both the higher power generation
and lower fuel consumption can be attained in the whole engine speed range from low to high. In the area of the
average engine load, low emission of nitrogen oxides (NOx) and high fuel efficiency can also be attained by making
the valve opening overlap between the intake and exhaust valves longer.
For the brief of the system operation, the intake valve timing is varied by the cam timing sprocket (1) which varies the
rotational phase between the intake camshaft (3) and sprocket. The rotor (2) in the cam timing sprocket is actuated by
switching or adjusting the hydraulic pressure applied to the chambers for the timing advancing (7) and/or retarding (6).
To switch or adjust the hydraulic pressure appropriately, ECM operates the oil control valve (12) with detecting the
engine speed, intake air value, throttle opening, engine coolant temperature and camshaft position (angle).
1
4
5
10
8
9
2
7
6
12
11
3
60˚ (variable angle)
Most retarded timing Most advanced timing
Exhaust valveIntake valve
Crank angle
Overlap of valves
Valve lift
I5RW0C140002-01
4. Oil passage to chamber for timing retarding 8. Oil filter 10. Oil pan
5. Oil passage to chamber for timing advancing 9. Oil pump 11. Control signal from ECM

Downloaded from www.Manualslib.com manuals search engine 1D-4 Engine Mechanical:
Oil Control Valve
The oil control valve switches and adjusts the hydraulic
pressure applied to the cam timing sprocket by moving
the spool valve (1) according to the duty pulse signals
output from the ECM. By this operation, the intake valve
timing is varied continuously. Signals output from the
ECM are the duty pulse of about 240 Hz.
Cam Timing Sprocket
The cam timing sprocket is equipped with the chambers
for timing advancing (2) and retarding (3) which are
separated by the rotor (5). The rotor rotates receiving the
hydraulic pressure applied to both the chambers. The
sprocket (1) is installed on the housing (4) and the rotor
is secured on the intake camshaft by fastening the bolts.
Therefore, the actuation of the rotor makes the phase
difference between the sprocket and intake camshaft.
Timing Advancing
When the duty ratio of the signal output from the ECM is
heavy, the spool valve (4) of the oil control valve moves
to the left (opposite direction against the coil (5)). By this
spool valve movement, the pressurized oil (1) is led into
the chambers for timing advancing and the oil in the
chambers for timing retarding is drained. This operations
actuate the rotor (3) and result in the advanced timing of
the intake valve.Timing Holding
When the duty ratio of the signal output from the ECM
shows that of holding, the spool valve of the oil control
valve is located at hold position. Because this condition
generates no oil pressure changes in both chambers,
the rotor is fixed at a target position.
Timing Retarding
When the duty ratio of the signal output from the ECM is
light, the spool valve of the oil control valve moves to the
right (head for the coil). By this spool valve movement,
the pressurized oil is led into the chambers for timing
retarding and the oil in the chambers for timing
advancing is drained. This operations actuate the rotor
and result in the retarded timing of the intake valve.
6. Seal
2. Drain
1
I5RW0C140034-01
12
3 4
5
6
I3RH0B140004-01
1
2
5
4
3
I5RW0C140035-01
I5RW0C140036-01
I5RW0C140037-01

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-5
Targeted Timing Varying Operation
Diagnostic Information and Procedures
Compression CheckS6RW0D1404001
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 transmission
gear shift lever in “Neutral” (shift selector
lever to “P” range for A/T model), and set
parking brake and block drive wheels.

3) Remove air cleaner assembly with air suction hose
referring to “Air Cleaner Assembly Removal and
Installation”.
4) Remove cylinder head upper cover.
5) Remove ignition coil assemblies and all spark plugs
referring to “Spark Plug Removal and Installation in
Section 1H”.
6) Disconnect fuel injector wires at the coupler.7) Install special tools (Compression gauge) into spark
plug hole.
Special tool
(A): 09915–64512
(B): 09915–64530
(C): 09915–67010 Driving condition Valve timing Target of control Effect
Engine running at idle
speedMost retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to intake manifold.Stabilization of the engine
rotation at idle speed.
Average engine load
rangeTo 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
rangeTo the retarded sideTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to intake manifold.Keeping of the engine stability.
Low or average
engine speed range
with heavy engine
loadTo the advanced
sideTo 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 loadTo 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
temperatureMost 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
stoppingMost retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to intake manifold.Improvement of start ability.
(A)
(C)
(B)
I3RH0B140009-01