2006 SUZUKI SX4 MAIN

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Replacement Tires
When replacement is necessary, the original equipment
type tire should be used. Refer to the Tire Placard.
Replacement tires should be of the same size, load
range and construction as those originally on the vehicle.
Use of any other size or type tire may affect ride,
handling, speedometer / odometer calibration, vehicle
ground clearance and tire or snow chain clearance to the
body and chassis.
It is recommended that new tires be installed in pairs on
the same axle. If necessary to replace only one tire, it
should be paired with the tire having the most tread, to
equalize braking traction.
WARNING!
Do not mix different types of tires on the
same vehicle such as radial, bias and bias-
belted tires except in emergencies, because
handling may be seriously affected and may
result in loss of control.

The metric term for tire inflation pressure is the kilo
pascal (kPa). Tire pressures is usually printed in both
kPa and kgf/cm
2 on the “Tire Placard”.
Metric tire gauges are available from tool suppliers.
The chart, shown in the table, converts commonly used
inflation pressures from kPa to kgf/cm
2 and psi.
Wheels DescriptionS6RW0D2401002
Wheel Maintenance
Wheel repairs that use welding, heating, or peening are
not approved. All damaged wheels should be replaced.
Replacement Wheels
Wheels must be replaced if they are bent, dented, have
excessive lateral or radial runout, air leak through welds,
have elongated bolt holes, if lug wheel bolts won’t stay
tight, or if they are heavily rusted. Wheels with greater
runout than shown in the following may cause
objectional vibrations.
Replacement wheels must be equivalent to the original
equipment wheels in load capacity, diameter, rim with
offset and mounting configuration. A wheel of improper
size or type may affect wheel and bearing life, brake
cooling, speedometer / odometer calibration, vehicle
ground clearance and tire clearance to body and
chassis.How to Measure Wheel Runout
To measure the wheel runout, it is necessary to use an
accurate dial indicator. The tire may be on or off the
wheel. The wheel should be installed to the wheel
balancer of the like for proper measurement.
Take measurements of both lateral runout “a” and radial
runout “b” at both inside and outside of the rim flange.
With the dial indicator set in place securely, turn the
wheel one full revolution slowly and record every reading
of the indicator.
When the measured runout exceeds the specification
and correction by the balancer adjustment is impossible,
replace the wheel. If the reading is affected by welding,
paint or scratch, it should be ignored.
Lateral runout limit “a”
Aluminum wheel: 0.3 mm (0.012 in.)
Steel wheel: 0.9 mm (0.035 in.)
Radial runout limit “b”
Aluminum wheel: 0.3 mm (0.012 in.)
Steel wheel: 0.7 mm (0.028 in.)
Metric Lug Nuts and Wheel Studs
All models use metric lug nuts and wheel studs.
Metric lug nuts and wheel studs size
M12 x 1.25
If a broken stud is found, see “Front Wheel Hub, Disc,
Bolt and Bearing Check in Section 2B”, “Front Wheel
Hub, Steering Knuckle and Wheel Bearing Removal and
Installation in Section 2B”, “Rear Wheel Hub Assembly
Removal and Installation in Section 2C”. kPa kgf/cm
2psi
Conversion: 1 psi =
6.895 kPa 1 kgf/cm
2 =
98.066 kPa160 1.6 23
180 1.8 26
200 2.0 29
220 2.2 32
240 2.4 35
260 2.6 38
280 2.8 41
300 3.0 44
320 3.2 47
340 3.4 50I4RS0A240001-01
I2RH01240003-01

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Equipment manufacture’s recommendations
Radial Tire Lead / Pull DescriptionS6RW0D2401006
“Lead / Pull” is the deviation of the vehicle from a straight
path on a level road even with no pressure on the
steering wheel.
Lead is usually caused by the following conditions.
• Improper tire and wheel alignment.
• Uneven brake assemblies.
• Tire construction.
The way in which a tire is built can produce lead in a
vehicle. An example of this is placement of the belt. Off
center belts on radial tires can cause the tire to develop
a side force while rolling straight down the road. If one
side of the tire has a little larger diameter than the other,
the tire will tend to roll to one side. This will develop a
side force which can produce vehicle lead.
The procedure in the figure (Lead Diagnosis) should be
used to make sure that wheel alignment is not mistaken
for tire lead.
• Part of the lead diagnosis procedure is different from
the proper tire rotation pattern currently in the owner
and service manuals. If a medium to high mileage tire
is moved to the other side of the vehicle, be sure to
check that ride roughness has not developed
• Rear tires will not cause lead.
Balancing Wheels DescriptionS6RW0D2401007
There are two types of wheel and tire balance: static and
dynamic. Static balance, as shown in figure, is the equal
distribution of weight around the wheel. Wheels that are
statically unbalanced cause a bouncing action called
tramp. This condition will eventually cause uneven tire
wear.Dynamic balance, as shown in figure, is the equal
distribution of weight on each side of the wheel
centerline so that when the tire spins there is no
tendency for the assembly to move from side to side.
Wheels that are dynamically unbalanced may cause
shimmy.
Inflate tires to recommended pressure
Road test vehicle on level unrouned road in both directions
Switch front tires side to side and road test again
Lead corrected,
if roughness results, replace tiresLeads in same directionLeads reverses direction
Put tires back in original position
and check alignmentInstall a known-good tire on one front side
Lead remains install a known-good
tire in place of other front tire
Lead remains known-good tires are not goodLead corrected replace tire
Lead corrected replace tire
I2RH01240007-01
1. Heavy spot wheel tramp [A]: Before correction
2. Balance weights addition point [B]: Corrective weights
3. C/L of spindle
1. Heavy spot wheel shimmy [C]: Before correction
2. Balance weights addition point [D]: Corrective weights
3. C/L of spindle
I2RH01240008-01
I2RH01240009-01

Downloaded from www.Manualslib.com manuals search engine Table of Contents 3- i
3
Section 3
CONTENTS
Driveline / Axle
Precautions ................................................. 3-1
Precautions............................................................. 3-1
Precautions on Driveline / Axle ............................. 3-1
Drive Shaft / Axle ..................................... 3A-1
Front ......................................................................... 3A-1
General Description ............................................. 3A-1
Front Drive Shaft Construction ............................ 3A-1
Component Location ........................................... 3A-1
Front Drive Shaft Assembly Components
Location ............................................................ 3A-1
Diagnostic Information and Procedures ............ 3A-2
Front Drive Shaft Symptom Diagnosis ................ 3A-2
Repair Instructions .............................................. 3A-2
Front Drive Shaft Components ........................... 3A-2
Front Drive Shaft Assembly On-Vehicle
Inspection.......................................................... 3A-3
Front Drive Shaft Assembly Removal and
Installation ......................................................... 3A-3
Front Drive Shaft Disassembly and
Reassembly ...................................................... 3A-4
Center Shaft and Center Bearing Support
Disassembly and Reassembly (If Equipped) .. 3A-12
Specifications..................................................... 3A-13
Tightening Torque Specifications ...................... 3A-13
Special Tools and Equipment ........................... 3A-14
Recommended Service Material ....................... 3A-14
Special Tool ...................................................... 3A-14
Rear ........................................................................ 3A-15
General Description ........................................... 3A-15
Rear Drive Shaft Construction .......................... 3A-15
Repair Instructions ............................................ 3A-15
Rear Drive Shaft Components .......................... 3A-15
Rear Drive Shaft Assembly Removal and
Installation ....................................................... 3A-16
Rear Drive Shaft Disassembly and
Reassembly .................................................... 3A-16
Specifications..................................................... 3A-18
Tightening Torque Specifications ...................... 3A-18
Special Tools and Equipment ........................... 3A-18
Recommended Service Material ....................... 3A-18
Special Tool ...................................................... 3A-18
Differential ................................................ 3B-1
Precautions...........................................................3B-1
Precaution for Rear Differential Oil Leakage....... 3B-1
Precautions in Diagnosing Trouble ..................... 3B-1
General Description .............................................3B-2
Rear Differential Description ............................... 3B-2
Coupling Description ........................................... 3B-2
4WD Control System Components ..................... 3B-3
4WD Control System Description........................ 3B-4
Function of 4WD Control System Component .... 3B-4
4WD Control System Wiring Circuit Diagram...... 3B-5
Terminal Arrangement of 4WD Control
Module .............................................................. 3B-5
Input / Output Signal Table of 4WD Control
Module .............................................................. 3B-6
On-Board Diagnostic System Description ........... 3B-6
CAN Communication System Description........... 3B-7
Diagnostic Information and Procedures ............3B-8
4WD Control System Check ............................... 3B-8
4WD Position Indicator Operation Check.......... 3B-10
4WD Control System Operation Inspection ...... 3B-10
Visual Inspection ............................................... 3B-11
DTC Check........................................................ 3B-11
DTC Clearance ................................................. 3B-11
DTC Table ......................................................... 3B-12
Fail-Safe Table .................................................. 3B-12
Scan Tool Data ................................................. 3B-13
Rear Differential Symptom Diagnosis ............... 3B-14
4WD Control Symptom Diagnosis..................... 3B-14
4WD Position Indicator Does Not Come ON at
Ignition Switch ON but Engine Stops .............. 3B-15
4WD Position Indicator Remains ON Steady
at Ignition Switch ON....................................... 3B-16
DTC C1240: 4WD Control Module Power
Supply Circuit Malfunction............................... 3B-17
DTC C1243: Internal Circuit Malfunction of
4WD Control Module ....................................... 3B-18
DTC C1250: Coupling Air Temperature
Sensor Circuit Open ........................................ 3B-19
DTC C1251: Coupling Air Temperature
Sensor Circuit Short ........................................ 3B-21
DTC C1252: Coupling Assembly Circuit Open .. 3B-22
DTC C1253: Coupling Assembly Circuit Short .. 3B-24
DTC C1254: 2WD/4WD Switch Malfunction ..... 3B-25
DTC U0073: Control Module Communication
Bus Off ............................................................ 3B-27

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Driveline / Axle
Differential
Precautions
Precaution for Rear Differential Oil LeakageS6RW0D3200001
Whenever vehicle is hoisted for any other service work than oil change, also be sure to check for oil leakage.
Precautions in Diagnosing TroubleS6RW0D3200002
• Do not disconnect the following parts before confirming diagnostic information (DTC, etc.) stored in 4WD control
module memory. These actions will erase memorized information in 4WD control module memory.
– Disconnection of coupler from 4WD control module
– Disconnection of battery cable from battery
– Disconnection of ground wire harness of 4WD control module
– Disconnect main fuse from fuse box
• Diagnostic information stored in 4WD control module memory can be cleared as well as checked by using SUZUKI
scan tool. Before using scan tool, read its Operator’s (Instruction) Manual carefully to have good understanding as
to what functions are available and how to use it.
• Be sure to read “Precautions for Electrical Circuit Service:” before inspection and observe what is written there.

Downloaded from www.Manualslib.com manuals search engine 3B-5 Differential:
4WD Control System Wiring Circuit DiagramS6RW0D3201006
Terminal Arrangement of 4WD Control ModuleS6RW0D3201007
5V
5V
12V
G26-3
YEL
GRY
G26-2
G26-22G26-23REDWHT
G26-13
G26-14
G26-12
G26-11
G26-10BLK
WHT/RED
RED/BLK
GRY/YEL
RED/WHT
12V
L102-1
L102-4
1
37
9
10
12
13
14
12V
G26-21BLU
G26-25
G26-24ORN
BRN
5V
28
11
WHT
WHT
WHTWHTWHTWHT
WHT
RED
RED
RED
REDRED
RED
RED
46
5
L174-4BLK/ORNL174-5L174-1
I7RW01320001-01
1. Coupling assembly 6. ECM 11. Data link connector (DLC)
2. Coupling air temperature sensor 7. 4WD control module 12. “IG COIL” fuse
3. Combination meter 8. 2WD/4WD switch 13. “4WD” fuse
4. BCM 9. “4WD” switch 14. Main fuse box
5. ABS / ESP® control module 10. “4WD lock” switch
1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24 25 26
[A]
I4JA01332038-01
[A]: Connector “G26” viewed from harness side
Te r m i n a l C i r c u i t Te r m i n a l C i r c u i t
G26-2 Coupling assembly (power) G26-14 “4WD lock” switch
G26-3 Coupling assembly (ground) G26-21 Data link connector (DLC)
G26-10 Ground G26-22 CAN communication line (high)
G26-11 Power source for internal memory G26-23 CAN communication line (low)
G26-12 Power source G26-24 Coupling air temperature sensor (ground)
G26-13 “4WD” switch G26-25 Coupling air temperature sensor (power)

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Step 2. DTC check, record and clearance
First, referring to “DTC Check”, check DTC and pending
DTC. If DTC exists, print or write down DTC and then
clear malfunction DTC(s) by referring to “DTC
Clearance”. Malfunction DTC indicates malfunction in
the system but it is not possible to know from it whether
the malfunction is occurring now or it occurred in the
past and normal condition has been restored. In order to
know that, check symptom in question according to Step
5 and then recheck DTC according to Step 6.
Diagnosing a trouble based on the DTC in this step only
or failure to clear the DTC in this step may result in an
faulty diagnosis, trouble diagnosis of a normal circuit or
difficulty in troubleshooting which is otherwise
unnecessary.
Step 3 and 4. Visual inspection
As a preliminary step, be sure to perform visual check of
the items that support proper function of the 4WD control
system referring to “Visual Inspection”.
Step 5. Trouble symptom confirmation
Check trouble symptoms based on information obtained
in “Step 1. Customer complaint analysis: ” and “Step 2.
DTC check, record and clearance: ”.
Also, reconfirm DTC according to “DTC Confirmation
Procedure” described in each DTC flow.
Step 6 and 7. Rechecking and record of DTC
Refer to “DTC Check” for checking procedure.
Step 8. 4WD control symptom diagnosis
Check the parts of the system suspected as a possible
cause referring to “4WD Control Symptom Diagnosis”.
Step 9. Troubleshooting for DTC
Based on the DTC indicated in Step 6 / 7 and referring to
“applicable DTC flow”, locate the cause of the trouble,
namely in a sensor, switch, wire harness, connector,
coupling assembly, 4WD control module or other part
and repair or replace faulty parts.
Step 10. Check for intermittent problem
Check parts where an intermittent trouble is easy to
occur (e.g. wire harness, connector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section
00” and related circuit of DTC recorded in Step 2.
Step 11. Final confirmation test
Confirm that the problem symptom has gone and the
vehicle is free from any abnormal conditions. If what has
been repaired is related to the malfunction DTC, clear
the DTC once and check to ensure that no malfunction
DTC is indicated.4WD Position Indicator Operation CheckS6RW0D3204002
1) Turn ignition switch to OFF position.
2) Check that 4WD position indicators turn on for about
2 seconds and then turns off.
If any faulty condition is found, proceed to “4WD
Position Indicator Does Not Come ON at Ignition
Switch ON but Engine Stops” or “4WD Position
Indicator Remains ON Steady at Ignition Switch ON”.
4WD Control System Operation InspectionS6RW0D3204003
NOTE
• It automatically changes into “4WD-auto”
position, when the vehicle speed becomes
specified speed or more at “4WD-lock”
position. It is “4WD-auto” position until
switch will be selected to “4WD-lock”
position at next time.
• When ABS operates while changed of each
position, it is discontinued of change. End
of the ABS operation, and then returned to
the position of before.

1) Inspect switch operation from “4WD-auto” to “2WD”
as follows.
a) Start engine.
b) Push 2WD/4WD switch to “2WD” position.
c) Check that 4WD AUTO indicator and 4WD
LOCK indicator not come ON.
2) Inspect switch operation from “2WD” to “4WD-auto”
as follows.
a) Start engine.
b) Push 2WD/4WD switch to “AUTO” position.
c) Check that 4WD AUTO indicator comes ON
steady and 4WD LOCK indicator not come ON.
3) Inspect switch operation from “4WD-auto” to “4WD-
lock” as follows.
a) Start engine.
b) Push 2WD/4WD switch to “LOCK” position, and
keep it for 3 seconds or more.
c) Check that 4WD AUTO indicator not come ON
and 4WD LOCK indicator comes ON steady.
4) Inspect switch operation from “4WD-lock” to “4WD-
auto” as follows.
a) Start engine.
b) Push 2WD/4WD switch to “AUTO” position.
c) Check that 4WD AUTO indicator comes ON
steady and 4WD LOCK indicator not come ON.

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4WD Position Indicator Does Not Come ON at Ignition Switch ON but Engine StopsS6RW0D3204013
Wiring Diagram
Circuit Description
4WD position indicator operates according to the signal from 4WD control module. If the 4WD control system is in
good condition, 4WD position indicator light up for 2 seconds when ignition switch is turned to ON position, and then
turned to OFF position. If an abnormality is detected in the system, 4WD position indicator remains lighting.
Troubleshooting
WHTYELRED/BLK
12
WHT/RED
WHT/RED
G26-12
G26-11
RED
BLK
WHT 56 47
12V
G26-10BLK
G26-22
G26-23REDWHT
3
1 2 3
4 5
6 7 8 9 10 11
12
13
14 15 16
17 18 19
20
21 22
23
24 25 26
[A]
I7RW01320004-01
[A]: 4WD control module connector “G26” (viewed from harness side) 4. Combination meter
1. Main fuse box 5. 4WD AUTO indicator
2. Junction block assembly 6. 4WD LOCK indicator
3. “METER” fuse 7. 4WD control module
Step Action Yes No
14WD position indicator power supply check
1) Turn ignition switch to ON position.
Do other indicators come ON?Go to Step 2. Go to Step 3.
2Check DTC
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ignition switch to ON position and check DTC.
Is there DTC(s) U0073, U0100, U0121 and/or U0155?Go to applicable DTC
diag. flow.Substitute a known-
good combination meter
and recheck. If 4WD
position indicator still
remains off, substitute a
known-good 4WD
control module and
recheck.

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4WD Position Indicator Remains ON Steady at Ignition Switch ONS6RW0D3204014
Wiring Diagram
Refer to “4WD Position Indicator Does Not Come ON at Ignition Switch ON but Engine Stops”.
Circuit Description
Transfer position indicator operates according to the signal from 4WD control module. If the 4WD control system is in
good condition, 4WD position indicator light up for 2 seconds when ignition switch is turned to ON position, and then
turned to OFF position. If an abnormality is detected in the system, 4WD position indicator remains lighting.
Troubleshooting3CAN communication circuit check
1) Check CAN communication circuit between combination
meter and 4WD control module referring to “DTC U0073:
Control Module Communication Bus Off”.
Is CAN communication circuit in good condition?Go to Step 4. Repair or replace.
4“METER” fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blown to “METER” fuse in junction block
assembly.
Is “METER” fuse in good condition?Go to Step 5. Replace “METER” fuse
and check for short.
5Combination meter power supply check
1) Remove combination meter referring to “Combination
Meter Removal and Installation in Section 9C”.
2) Check proper connection to “WHT/RED” and “BLK” wire
terminal of combination meter connector.
3) If OK, then turn ignition switch to ON position and
measure voltage between “WHT/RED” wire terminal of
combination meter connector and vehicle body ground.
Is it 10 – 14 V?Go to Step 6. “WHT/RED” wire is
open circuit.
6Combination meter ground circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between “BLK” wire terminal of
combination meter connector and vehicle body ground.
Is resistance 1
Ω or less?Substitute a known-
good combination meter
and recheck. If 4WD
position indicator still
remains OFF, substitute
a known-good 4WD
control module and
recheck.“BLK” wire is open or
high resistance circuit. Step Action Yes No
Step Action Yes No
1Check DTC
1) Check DTC referring to “DTC Check”.
Is there any DTC(s)?Perform DTC flow to
repair and retry.Go to Step 2.
2CAN communication circuit check
1) Check CAN communication circuit between combination
meter and 4WD control module referring to “DTC U0073:
Control Module Communication Bus Off”.
Is CAN communication circuit in good condition?Substitute a known-
good combination meter
and recheck. If 4WD
position indicator still
remains off, substitute a
known-good 4WD
control module and
recheck.Repair or replace.