length SUZUKI SX4 2006 1.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-117
System Description
The CMP sensor located on the transmission side of cylinder head (VVT model) or timing chain cover (non-VVT
model) consists of the signal generator (magnetic sensor) and signal rotor (intake camshaft portion (VVT model) or
exhaust camshaft timing sprocket (non-VVT model)).
The signal generator generates reference signal through slits in the slit plate which turns together with the camshaft.
Reference signal
The CMP sensor generates 6 pulses of signals each of which has a different waveform length while the camshaft
makes one full rotation. Refer to “Inspection of ECM and Its Circuits”.
Based on these signals, ECM judges which cylinder piston is in the compression stroke and the engine speed.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Crank engine for 5 sec.
4) Check DTC and pending DTC.
DTC Troubleshooting
NOTE
Before this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions for DTC Troubleshooting”.

DTC detecting condition Trouble area
• CMP sensor pulse is less than 20 pulses per crankshaft 8 revolutions
or
• CMP sensor pulse is more than 28 pulses per crankshaft 8
revolutions
or
• CMP sensor pulse is less than 20 pulses between BTDC 75° CA and
BTDC 5° CA with crankshaft 8 revolutions from engine start.
(1 driving cycle detection logic)• CMP sensor circuit open or short
• Signal rotor teeth damaged
• CMP sensor malfunction, foreign material
being attached or improper installation
•ECM
Step Action Yes No
1Was “Engine and Emission Control System Check”
performed?Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2CMP sensor and connector for proper installation check
Is CMP sensor installed properly and connector connected
securely?Go to Step 3. Correct.

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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

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-45
Valves and Valve Guides InspectionS6RW0D1406028
Valve Guide
Valve stem-to-guide clearance
Using a micrometer and bore gauge, take diameter readings on valve stems and guides to check stem-to-guide
clearance.
Be sure to take reading at more than one place along the length of each stem and guide.
If clearance exceeds limit, replace valve and valve guide.
Valve stem and valve guide specification
Valve stem end deflection
If bore gauge is not available, check end deflection of
valve stem with a dial gauge instead.
Move stem end in directions (1) and (2) to measure end
deflection.
If deflection exceeds its limit, replace valve stem and
valve guide.
Valve stem end deflection limit
In: 0.14 mm (0.005 in.)
Ex: 0.18 mm (0.007 in.)Va l v e
Visual inspection
• Remove all carbon from valves.
• Inspect each valve for wear, burn or distortion at its
face and stem end, as necessary, replace it.
• Inspect valve stem end face for pitting and wear. If
pitting or wear is found there, valve stem end may be
resurfaced, but not too much to grind off its chamber.
When it is worn out too much that its chamber is gone,
replace valve. Item Standard Limit
Valve stem diameter [A]In 5.465 – 5.480 mm (0.2150 – 0.2157 in.) —
Ex 5.440 – 5.455 mm (0.2142 – 0.2148 in.) —
Valve guide bore [B] In & Ex 5.500 – 5.512 mm (0.2165 – 0.2170 in.) —
Stem-to-guide clearanceIn 0.020 – 0.047 mm (0.0008 – 0.0018 in.) 0.070 mm (0.0028 in.)
Ex 0.045 – 0.072 mm (0.0017 – 0.0028 in.) 0.090 mm (0.0035 in.)
I4RS0B140016-01
IYSQ01141096-01I2RH01140135-01

Downloaded from www.Manualslib.com manuals search engine 1D-48 Engine Mechanical:
Valve Spring InspectionS6RW0D1406030
Valve Spring Free Length and Preload
Referring to data, check to be sure that each spring is in
sound condition, free of any evidence of breakage or
weakening. Remember, weakened valve springs can
cause chatter, not to mention possibility of reducing
power output due to gas leakage caused by decreased
seating pressure.
Valve spring free length
Standard: 36.83 mm (1.450 in.)
Limit: 35.83 mm (1.411 in.)
Valve spring preload
Standard: 107 – 125 N (10.7 – 12.5 kgf) for 31.50 mm
(23.6 – 27.6 lb/1.240 in.)
Limit: 102 N (10.2 kgf) for 31.50 mm (22.5 lb/1.240 in.)Spring Squareness
Use a square and surface plate to check each spring for
squareness in terms of clearance between end of valve
spring and square. Valve springs found to exhibit a
larger clearance than limit must be replaced.
Valve spring squareness
Limit: 1.6 mm (0.063 in.)
I2RH01140143-01
I2RH01140144-01

Downloaded from www.Manualslib.com manuals search engine 1D-64 Engine Mechanical:
2) Tighten main bearing cap No.1 bolts (1) – (10) and
main bearing cap No.2 bolts (11) – (20) gradually as
follows.
a) Tighten bolts (1) – (10) to 30 N⋅m (3.0 kgf-m,
22.0 lb-ft) according to numerical order in figure.
b) In the same manner as in Step a), tighten them
to 50 N⋅m (5.0 kgf-m, 36.5 lb-ft).
c) In the same manner as in Step a), retighten them
to 60°.
d) Tighten bolts (11) – (20) to 25 N⋅m (2.5 kgf-m,
18.0 lb-ft) according to numerical order in figure.
Tightening torque
Main bearing cap No.1 bolt ((1) – (10)):
Tighten 30 N⋅m (3.0 kgf-m, 22.0 lb-ft), 50 N⋅m
(5.0 kgf-m, 36.5 lb-ft) and 60° by the specified
procedure
Main bearing cap No.2 bolt ((11) – (20)):
Tighten 25 N⋅m (2.5 kgf-m, 18.0 lb-ft) by the
specified procedure3) Use a dial gauge to read displacement in axial
(thrust) direction of crankshaft.
If its limit is exceeded, replace thrust bearing with
new standard one or oversize one to obtain standard
thrust play.
Crankshaft thrust play
Standard: 0.11 – 0.31 mm (0.0043 – 0.0122 in.)
Limit: 0.35 mm (0.0138 in.)
NOTE
After checking the thrust play, make sure that
thread deformation of each bearing cap No.1
bolt referring to “Main Bearing Cap No.1
Bolt” in “Main Bearings Inspection”.

Out-of-Round and Taper (Uneven Wear) of Journals
An unevenly worn crankshaft journal shows up as a
difference in diameter at a cross section or along its
length (or both). This difference, if any, is determined by
taking micrometer readings. If any one of journals is
badly damaged or if amount of uneven wear in the sense
exceeds its limit, regrind or replace crankshaft.
Crankshaft out-of-round and taper
Limit: 0.01 mm (0.0004 in.)
Out-of-round
A – B
Ta p e r
a – b
I2RH0B140137-01
I2RH01140183-01
I2RH0B140138-01

Downloaded from www.Manualslib.com manuals search engine 1E-8 Engine Lubrication System:
Radial clearance
Check radial clearance between outer rotor (1) and case
(2) using thickness gauge (3).
If clearance exceeds its limit, replace outer rotor or case.
Radial clearance between outer rotor and case for oil
pump
Limit: 0.310 mm (0.0122 in.)
Side clearance
Using straightedge (1) and thickness gauge (2),
measure side clearance.
If side clearance exceeds its limit, replace oil pump
assembly.
Side clearance for oil pump inner rotor
Limit: 0.15 mm (0.0059 in.)Relief valve spring free length and load
Check relief valve spring free length and load as shown
in the figure. If the measured valve spring length is lower
than the specification, replace relief valve spring.
Relief valve spring free length and load
I2RH0B150026-01
I2RH0B150027-01
Standard Limit
Free length52.4 mm
(2.06 in.)—
Load at spring
length
38.5 mm (1.52 in.)77 N
(7.7 kgf, 17.0 lb)69 N
(6.9 kgf, 15.0 lb)
I2RH01150023-01

Downloaded from www.Manualslib.com manuals search engine Starting System: 1I-6
Starting Motor InspectionS6RW0D1906003
Plunger
Inspect plunger for wear. Replace if necessary.
Magnetic Switch
Push in plunger and release it. The plunger should
return quickly to its original position. Replace if
necessary.
Pull-in coil open circuit test
Check for continuity across magnetic switch “S” terminal
(1) and “M” terminal (2). If no continuity, coil is open and
should be replaced.Hold-in coil open circuit test
Check for continuity across magnetic switch “S” terminal
(1) and coil case. If no continuity, coil is open and should
be replaced.
Rear Bracket Bush
Inspect bush for wear or damage. Replace if necessary.
Brush
• Check brushes for wear.
Measure length of brushes and if below the limit,
replace the brush.
Brush length
Standard: 12.3 mm (0.48 in.)
Limit: 7.0 mm (0.28 in.)
• Install brushes to each brush holder and check for
smooth movement.
I2RH01190008-01
I2RH01190009-01
I2RH01190010-01
I2RH01190011-01
I2RH01190012-01
I2RH01190013-01

Downloaded from www.Manualslib.com manuals search engine 1I-9 Starting System:
Front Housing Bush
Inspect the bush for wear or damage. Replace if
necessary.
Specifications
Cranking System SpecificationsS6RW0D1907002
Tightening Torque SpecificationsS6RW0D1907003
NOTE
The specified tightening torque is also described in the following.
“Starting Motor Dismounting and Remounting”
“Starting Motor Components”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
Special Tools and Equipment
Recommended Service MaterialS6RW0D1908001
NOTE
Required service material is also described in the following.
“Starting Motor Components”

I2RH01190024-01
Voltage 12 volts
Output 1.2 kW
Rating 30 seconds
Direction of rotation Clockwise as viewed from pinion side
Brush length Standard: 12.3 mm (0.48 in.) Limit: 7.0 mm (0.28 in.)
Number of pinion teeth 8
Performance Condition Guarantee
Around at 20 °C
(68 °F)No load characteristic 11.0 V90 A maximum
2370 r/min minimum
Load characteristic7.5 V
300 A10.65 N⋅m (1.065 kgf-m, 7.70 lb-ft) minimum
840 r/min minimum
Locked characteristic 4.0 V780 A maximum
20 N⋅m (2.0 kgf-m, 14.5 lb-ft) minimum
Magnetic switch operating voltage 8 volts maximum
Fastening partTightening torque
Note
N⋅mkgf-mlb-ft
Starting motor battery cable nut 9.8 0.98 7.0)

Downloaded from www.Manualslib.com manuals search engine 1J-12 Charging System:
4) Check slip rings for roughness or scoring. If rough or
scored, replace the rotor.
Using a vernier caliper, measure the slip ring
diameter. If the diameter is less than minimum,
replace the rotor.
Slip ring diameter
Standard: 14.2 – 14.4 mm (0.560 – 0.566 in.)
Limit: 12.8 mm (0.503 in.)
Stator
1) Using an ohmmeter, check all leads for continuity. If
there is no continuity, replace the stator.
2) Using an ohmmeter, check that there is no continuity
between coil leads and stator core. If there is
continuity, replace the stator.
Brush and Brush Holder
Check each brush for wear by measuring its length as
shown. If the brush is found worn down to service limit,
replace the brush.
Exposed brush length “a”
Standard: 10.5 mm (0.41 in.)
Limit: 1.5 mm (0.05 in.)Rectifier
1) Using an ohmmeter, connect one tester probe to the
“B” terminal (1) and the other to each rectifier
terminal (2).
2) Reverse the polarity of the tester probes and repeat
Step 1).
3) Check that one shows continuity and the other
shows no continuity.
If there is continuity, replace the rectifier.
4) Using an ohmmeter, connect one tester probe to
each negative terminal (1) and the other to each
rectifier terminal (2).
5) Reverse the polarity of the tester probes and repeat
Step 4).
6) Check that one shows continuity and the other
shows no continuity.
If there is continuity, replace the rectifier.
IYSQ011A0044-01
I2RH011A0014-01
I2RH011A0015-01
IYSQ011A0047-01
I1JA011A0002-01
I2RH011A0017-01

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Specifications
Charging System SpecificationsS6RW0D1A07003
Battery
NOTE
The battery used in each vehicle is one of the following two types, depending on specification.

Battery
: 46B24R (40.6AH/5HR), 55B24R (42.5AH/5HR) 12V
Generator
Tightening Torque SpecificationsS6RW0D1A07004
NOTE
The specified tightening torque is also described in the following.
“Generator Dismounting and Remounting”
“Generator Components”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”. Battery type 46B24R 55B24R
Rated capacity AH/5HR, 12 Volts 40.6 42.5
Electrolyte L (US / lmp pt.) — 2.8 (5.92 / 4.93)
Type 70 A type
Rated voltage 12 V
Nominal output 70 A
Permissible max. speed 18,000 r/min.
No-load speed 1020 r/min. (rpm)
Regulated voltage 14.2 – 14.8 V (Hi), 12.5 – 13.1 V (Lo)
Exposed brush length Standard: 10.5 mm (0.41 in.)
Limit: 1.5 mm (0.05 in.)
Permissible ambient temperature –30 to 90 °C (–22 to 194 °F)
Polarity Negative ground
Rotation Clockwise viewed from pulley side
Fastening partTightening torque
Note
N⋅mkgf-mlb-ft
Generator bracket bolt 25 2.5 18.0)
Generator pivot bolt 50 5.0 36.0)
Generator adjusting bolt
Tighten 7.0 0.7 5.0by the specified
procedure. )