Motor SUZUKI SX4 2006 1.G Service Manual Online

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-101
Remounting
1) Make sure that torque converter is installed correctly
to transaxle.
Refer to “Automatic Transaxle Unit Assembly”.
2) Attach transaxle to engine. Tighten engine oil pan
bolts (1) to specified torque.
WARNING!
Be sure to keep transaxle with torque
converter horizontal or facing up throughout
the work. Should it be tilted with torque
converter down, converter may fall off and
cause personal injury.

Tightening torque
Engine oil pan bolt (a): 55 N·m (5.5 kgf-m, 40.0
lb-ft)
Transaxle and engine fastening bolt (b): 85 N·m
(8.5 kgf-m, 61.5 lb-ft)
Transaxle and engine fastening nut (c): 85 N·m (
8.5 kgf-m, 61.5 lb-ft)3) Tighten drive plate to torque converter bolts. Align
bolt hole of drive plate and torque converter then
tighten bolts through torque converter housing lower
plate opening.
Lock drive plate (1) by engaging flat head rod or the
like (2) with drive plate gear.
Tightening torque
Drive plate to torque converter bolt (a): 19 N·m (
1.9 kgf-m, 14.0 lb-ft)
4) Install transaxle housing lower plate (1).
Tightening torque
Transaxle housing lower plate bolt (a): 11 N·m (
1.1 kgf-m, 8.0 lb-ft)
5) Install starter motor referring to “Starting Motor
Dismounting and Remounting in Section 1I”.
6) Remount engine with transaxle assembly to vehicle.
Refer to “Engine Assembly Removal and Installation
in Section 1D” for its procedure.
2, (b)
2, (b)
1, (a)
3, (c)I5RW0C510054-01
3. Engine oil pan
1
(a)
(a)3
2
I5RW0C510055-01
1 (a)
I5RW0C510056-01

Downloaded from www.Manualslib.com manuals search engine 5B-12 Manual Transmission/Transaxle:
Manual Transaxle Unit Dismounting and
Remounting
S6RW0D5206010
Dismounting
1) Drain coolant.
2) Remove battery and tray with ECM.
3) Remove air cleaner case and resonator.
4) Remove clutch fluid pipe referring to “Clutch Fluid
Pipe Removal and Installation in Section 5C”.
5) Disconnect back up light switch coupler and undo
wiring harness clamps.
6) Disconnect gear shift and gear select control cables
(1) from transaxle.
7) Remove earth cable from transaxle.
8) Remove water inlet pipe.
9) Remove starting motor referring to “Starting Motor
Dismounting and Remounting in Section 1I”.
10) Remove transaxle to engine bolts (1) of upper side.
11) Drain transaxle oil and transfer oil, if equipped.
12) Remove engine under covers.
13) Remove drive shaft assembly and center shaft
referring to “Front Drive Shaft Assembly Removal
and Installation in Section 3A”.
14) Remove exhaust No.1, No.2 and No.3 pipes
referring to “Exhaust Pipe and Muffler Removal and
Installation in Section 1K”.
15) Remove suspension frame, engine front mounting
member and engine mounting member referring to
“Front Suspension Frame, Stabilizer Bar and/or
Bushing Removal and Installation in Section 2B” and
“Engine Mountings Components in Section 1D”.16) Remove transfer referring to “Transfer Dismounting
and Remounting in Section 3C”, if equipped.
17) Remove clutch housing lower plate.
18) Support transaxle with transmission jack.
19) Remove left mounting (1) and left mounting bracket
(2).
20) Remove stiffener bolts (2), transaxle to engine bolts
(1) and nut of lower side, and then lower transaxle.
Remounting
CAUTION!
• Care should be taken not to scratch oil
seal lip with drive shaft while raising
transaxle.
• Do not hit drive shaft joint with hammer
when installing it into differential gear.

Reverse dismounting procedure for remounting of
transaxle, noting the following points.
• Tighten each bolts and nuts to specified torque
referring to “Manual Transaxle Unit Components” and
“Engine Mountings Components in Section 1D”.
• Set each clamp for wiring securely.
• Fill transaxle oil and transfer oil referring to “Manual
Transaxle Oil Change” and “Transfer Oil Change in
Section 3C”.
• Connect battery and check function of engine, clutch
and transaxle.
1
I5RW0A520011-01
1
I5RW0A520012-01
1
2
I5RW0A520013-01
1
2I5RW0A520014-01

Downloaded from www.Manualslib.com manuals search engine Table of Contents 6- i
6
Section 6
CONTENTS
Steering
Precautions ................................................. 6-1
Precautions............................................................. 6-1
Precautions on Steering........................................ 6-1
Steering General Diagnosis.................... 6A-1
Precautions........................................................... 6A-1
Precautions for Steering Diagnosis ..................... 6A-1
Diagnostic Information and Procedures ............ 6A-1
Steering Symptom Diagnosis .............................. 6A-1
Steering System Inspection ................................ 6A-2
Steering Wheel and Column................... 6B-1
Precautions........................................................... 6B-1
Service Precautions of Steering Wheel and
Column.............................................................. 6B-1
General Description ............................................. 6B-1
Steering Wheel and Column Construction .......... 6B-1
Diagnostic Information and Procedures ............ 6B-2
Checking Steering Column for Accident
Damage ............................................................ 6B-2
Repair Instructions .............................................. 6B-3
Steering Wheel and Column Construction .......... 6B-3
Steering Wheel Removal and Installation ........... 6B-4
Contact Coil Cable Assembly Removal and
Installation ......................................................... 6B-5
Centering Contact Coil Cable Assembly ............. 6B-6
Contact Coil Cable Assembly Inspection ............ 6B-6
Steering Column Removal and Installation ......... 6B-6
Steering Column Inspection ................................ 6B-8
Ignition Switch Cylinder Assembly Removal
and Installation (Non- Keyless Start Model)...... 6B-8
Steering Lock Assembly (Ignition Switch)
Removal and Installation................................... 6B-9
Steering Lower Shaft Removal and
Installation ....................................................... 6B-10
Specifications..................................................... 6B-11
Tightening Torque Specifications ...................... 6B-11
Special Tools and Equipment ........................... 6B-11
Special Tool ...................................................... 6B-11
Power Assisted Steering System........... 6C-1
Precautions........................................................... 6C-1
P/S System Note ................................................. 6C-1
Precautions in Diagnosing Troubles ................... 6C-1General Description .............................................6C-2
P/S System Description ......................................6C-2
EPS Diagnosis General Description ...................6C-3
On-Board Diagnostic System Description ...........6C-3
Schematic and Routing Diagram ........................6C-4
EPS System Wiring Circuit Diagram ...................6C-4
Diagnostic Information and Procedures ............6C-5
EPS System Check .............................................6C-5
“EPS” Warning Light Check ................................6C-8
DTC Check..........................................................6C-8
DTC Clearance ...................................................6C-9
DTC Table ...........................................................6C-9
Visual Inspection ...............................................6C-11
Scan Tool Data .................................................6C-12
P/S System Symptom Diagnosis ......................6C-13
DLC and Its Communication Check (No
communication to P/S Control Module)...........6C-14
“EPS” Warning Light Does Not Come ON with
Ignition Switch Turned ON before Engine
Starts ...............................................................6C-16
“EPS” Warning Light Remains ON Steady
after Engine Starts ..........................................6C-18
DTC C1111 / C1113 / C1115: Torque Sensor
Circuit Failure ..................................................6C-19
DTC C1116: Steering Torque Sensor Power
Supply Circuit ..................................................6C-21
DTC C1121 / C1123 / C1124: Vehicle Speed
Signal Circuit Failure .......................................6C-22
DTC C1122: Engine Speed Signal....................6C-24
DTC C1141 / C1142 / C1143 / C1145: Motor
Circuit Failure ..................................................6C-26
DTC C1153: P/S Control Module Power
Supply Circuit ..................................................6C-27
DTC C1155: P/S Control Module Internal
Failure .............................................................6C-28
P/S Control Module Power Supply and
Ground Circuit Check ......................................6C-29
Inspection of P/S Control Module and Its
Circuits ............................................................6C-30
Steering Wheel Play Check ..............................6C-34
Steering Force Check .......................................6C-34
Repair Instructions ............................................6C-35
Steering Gear Case Assembly Components ....6C-35
Tie-Rod End Boot On-Vehicle Inspection .........6C-36
Tie-Rod End Removal and Installation..............6C-36

Downloaded from www.Manualslib.com manuals search engine 6-ii Table of Contents
Tie-Rod End Inspection.....................................6C-37
Steering Shaft Joint On-Vehicle Inspection.......6C-37
Steering Gear Case Assembly Removal and
Installation .......................................................6C-37
Steering Rack Boot Inspection ..........................6C-38
Tie-Rod / Rack Boot Removal and Installation ..6C-38
Steering Rack Plunger Removal and
Installation .......................................................6C-40
Steering Rack Plunger Inspection .....................6C-40P/S Control Module Removal and Installation...6C-41
Torque Sensor and Its Circuit Inspection ..........6C-41
P/S Motor and Its Circuit Inspection ..................6C-42
Specifications .....................................................6C-43
Tightening Torque Specifications ......................6C-43
Special Tools and Equipment ...........................6C-44
Recommended Service Material .......................6C-44
Special Tool ......................................................6C-44

Downloaded from www.Manualslib.com manuals search engine 6C-2 Power Assisted Steering System:
General Description
P/S System DescriptionS6RW0D6301001
This electronic power steering (EPS) system consists of a power steering (P/S) control module (3), a torque sensor
(4), a P/S motor (5). In this system, the P/S control module determines the level and direction of the assist force for the
steering wheel (1) according to the signal from the torque sensor and the vehicle speed signal from BCM (9). The P/S
control module runs the motor so as to assist the operation of the steering wheel.
The P/S control module diagnoses troubles which may occur in the area including the following components when the
ignition switch is ON and the engine is running. When the P/S control module detects any malfunction, it stops the
motor operation.
• Torque sensor
• Vehicle speed signal circuit
• Engine speed signal circuit
• P/S Motor
• P/S control module.
1
32
4
6
7
5
8
9
I7RW01632001-01
2. Steering column 7. Battery
6. Steering gear case assembly 8. ECM

Downloaded from www.Manualslib.com manuals search engine 6C-4 Power Assisted Steering System:
Schematic and Routing Diagram
EPS System Wiring Circuit DiagramS6RW0D6302001
[A]
123
45
3 21
4
567
8
9 11
10 12 13
141516
17 18 19201
2
[B]
1
2
[C] [D]
10 9 8 7654 3 21
16 15 14 13 12 11
26 25 24 2322 21 20 19 18 17
32 31 30 29 28 27
[F][E]
12
BRN RED/
BLU GRY LT GRN/
BLK
BLK
RED
WHT GRN
BLK
E11-1
E11-5
E11-14
E11-12
[J]:E01-44E01-4
[J]:E01-27E01-26
E12-1
E12-2
E11-10E11-8
E11-9
E11-19
E13-1 GRN
GRY
GRN
WHT
G241-25G241-31
RED/BLK
11
12
1314 3 18
20
21
7 19
4 12
22
12V
E13-2BLK
9V
REDE11-20
12V
12V
E61-2
E61-1
610
55
5V
8
E11-115V
PPL
E11-4
9
23
+BB
BLU/
WHTE04-9
1524YELE11-18E31-5
E31-2
E31-39V
3V
E31-4
E31-1IG11617
C07-25
[H]
[G]
G04-15
[I]:G04-22
25L313-3
[I]
I6RW0D630001-01
[A]: P/S control module connector No.1 “E11” (viewed from harness side) 3. Junction block assembly 15. BCM
[B]: P/S control module connector No.2 “E13” (viewed from harness side) 4. Main fuse 16. Output shaft speed sensor
[C]: P/S control module connector No.3 “E12” (viewed from harness side) 5. Front (left/right) wheel speed sensor 17. TCM
[D]: Combination meter connector “G241” (viewed from harness side) 6. ABS control module 18. Individual circuit fuse box No.1
[E]: Torque sensor connector “E31” (viewed from harness side) 7. Combination meter 19. “IGN” fuse
[F]: Motor connector “E61” (viewed from harness side) 8. “EPS” warning light 20. “P/S” fuse
[G]: M/T model 9. Data link connector (DLC) 21. “IG1 SIG” fuse
[H]: A/T model 10. ECM 22. “MTR” fuse
[I]: Junction block without BCM model (Taiwan model) 11. P/S control module 23. To ABS control module
[J]: M15A engine with 4A/T equipped with slip control model (Hong Kong
model)12. P/S motor 24. To HVAC control module
1. Main fuse box 13. Shield 25. To SDM
2. Ignition switch 14. Torque sensor (built into steering gear case)

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-5
Terminal Arrangement of P/S Control Module Coupler (Viewed from Harness Side)
Diagnostic Information and Procedures
EPS System CheckS6RW0D6304001
WARNING!
Carry out test drive in light traffic area to prevent an accident.

Refer to the following items for the details of each step.Terminal Circuit Terminal Circuit
E11-1Ignition switch signal for P/S control
moduleE11-13 —
E11-2 — E11-14 P/S active signal (idle up signal)
E11-3 — E11-15 —
E11-4 Vehicle speed signal E11-16 —
E11-5 “EPS” warning Light E11-17 —
E11-6 — E11-18 Torque sensor signal (Main)
E11-7 — E11-19 Ground for shield wire
E11-8 9 V power supply for torque sensor E11-20Reference sensor power supply for
torque sensor
E11-9 Ground for torque sensors E12-1 Motor output 1
E11-10 Torque sensor signal (Sub) E12-2 Motor output 2
E11-11Serial communication circuit for data
link connectorE13-1Main power supply for internal
memory and EPS motor
E11-12 Engine speed signal E13-2 Ground for P/S control module
Step Action Yes No
1) Customer complaint analysis
1) Perform customer complaint analysis referring to
“Customer Complaint Analysis”.
Was customer complaint analysis performed?Go to Step 2. Perform customer
complaint analysis.
2) DTC check, record and clearance
1) Check for DTC (including pending DTC) referring to
“DTC Check, Record and Clearance”.
Is there any DTC(s)?Print DTC or write them
down and clear them by
referring to “DTC
Clearance”, and go to
St ep 3 .Go to Step 4.
3) Visual inspection
1) Perform visual inspection referring to “Visual Inspection”.
Is there any faulty condition?Repair or replace
malfunction part, and go
to Step 11.Go to Step 5.
4) Visual inspection
1) Perform visual inspection referring to “Visual Inspection”.
Is there any faulty condition?Repair or replace
malfunction part, and go
to Step 11.Go to Step 8.
5) Trouble symptom confirmation
1) Confirm trouble symptom referring to “Trouble Symptom
Confirmation”.
Is trouble symptom identified?Go to Step 6. Go to Step 7.
6) Rechecking and record of DTC
1) Recheck for DTC referring to “DTC Check”.
Is there any DTC(s)?Go to Step 9. Go to Step 8.
7) Rechecking and record of DTC
1) Recheck for DTC referring to “DTC Check”.
Is there any DTC(s)?Go to Step 9. Go to Step 10.

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-11
Visual InspectionS6RW0D6304006
Visually check the following parts and systems.)
C1141P/S motor circuit
voltageVoltage between both motor
drive circuit is more than 8.5 V or
less than 0.2 V for 0.5 second
continuously while motor is not
driven.
• P/S motor circuit
• P/S motor
• Torque sensor
• P/S control module1 driving
cycle1 driving
cycle
)
C1142P/S motor circuit range/
performanceMeasured motor drive current is
more than 10 A as compared
with target motor drive current.1 driving
cycle1 driving
cycle
)
C1143P/S motor circuit
current too highMeasured motor drive current is
more than 65 A.1 driving
cycle1 driving
cycle
)
C1145P/S Motor Circuit
Current Too Low Measured motor drive current is
less than 2 A continuously for
more than 3 seconds even
though target motor drive current
is more than 4 A.
or
Measured motor drive current is
less than 0.8 A for total 1 second
even though motor control duty is
more than 90% when target
motor drive current is less than 8
A.1 driving
cycle1 driving
cycle
)
C1153P/S control module
power supply circuitPower supply voltage of P/S
control module is less than 9 V
for 5 seconds continuously while
engine speed is more than 600
rpm• P/S control module
power supply circuit
• Undercharged Battery
• Generator
• P/S control module1 driving
cycle1 driving
cycle
)
C1155P/S control module
internal failureInternal memory (EEPROM) is
data error.• P/S control module1 driving
cycleDoes not
light up
Internal circuit is faulty.
or
Power supply voltage of P/S
control module exceeded 17.5 V• Generator
• P/S control module1 driving
cycle1 driving
cycle DTC No. Detecting itemDetecting condition
(DTC will set when detecting)Trouble area DTC“EPS”
warning
light
Inspection Item Referring section
Battery Level, leakage, color “Battery Description in Section 1J”
Connectors of
electric wire harnessDisconnection friction“Intermittent and Poor Connection Inspection in
Section 00”
Fuses Burning“Cautions in Body Electrical System Servicing in
Section 9A”
Parts Installation, damage
Other parts that can be checked visually

Downloaded from www.Manualslib.com manuals search engine 6C-12 Power Assisted Steering System:
Scan Tool DataS6RW0D6304007
NOTE
When P/S motor is cold condition (that is, armature coil of P/S motor is not heated), normal value with
asterisk (*) mark in the following table is displayed on scan tool

Scan Tool Data Definitions
Power Supply Voltage
This parameter indicates battery positive voltage.
Sensor Power Supply (Torque Sensor Power Supply,
V)
This parameter indicates the power supply voltage which
the P/S control module supplies to the torque sensor.
Sensor (Main) Torque (Torque Sensor Main Torque,
N⋅m)
The torque sensor is installed to detect the steering force
and the steering direction. It consists of two
potentiometers and the main torque sensor is one of
these.
Sensor (Sub) Torque (Torque Sensor Sub Torque,
N⋅m)
The torque sensor is installed to detect the steering force
and the steering direction. It consists of two
potentiometers and the sub-torque sensor is one of
these. Its output characteristics are compared with those
of the main torque sensor.Control Torque (N⋅m)
This parameter is an internal parameter of the P/S
control module. It is obtained by computing the torque
sensor input signal.
Target Motor Current (Motor Control Current, A)
Based on the input signal, the P/S control module
determines the assist amount and controls the current to
the motor suitable for that assist amount. This parameter
indicates that control value.
Measured MOT Current (Motor Monitor Current, A)
This parameter indicates the actually measured value of
the current flowing to the motor. The motor circuit
condition is diagnosed by comparing this parameter with
“Motor Control” parameter described previously.
Vehicle Speed (km/h, MPH)
Vehicle speed signal is fed from BCM. P/S control
module determines the amount of power assist based on
this vehicle speed signal and the torque sensor signal.
Engine Speed (rpm)
Engine speed signal is fed from the ECM so that it can
be used for trouble diagnosis of the electric power
steering system. Scan tool data Vehicle condition Normal condition
) Power Supply Voltage
Ignition switch ON10 – 14 V
) Sensor Power Supply7.4 – 10 V
) Sensor (Main) TorqueEngine running at idle
speedSteering wheel at fully turned to left –10.5 – 0 N⋅m
Steering wheel at free 0 N⋅m
Steering wheel at fully turned to right 0 – 12.85 N⋅m
) Sensor (Sub) Torque Engine running at idle
speedSteering wheel at fully turned to left 0 – 10.65 N⋅m
Steering wheel at free 0 N⋅m
Steering wheel at fully turned to right –12.85 – 0 N⋅m
) Control TorqueEngine running at idle
speedSteering wheel at fully turned to left –7.22 – 0 N⋅m
Steering wheel at free 0 N⋅m
Steering wheel at fully turned to right 0 – 7.16 N⋅m
) Target Motor CurrentEngine running at idle
speedSteering wheel at free 0 A
Steering wheel at fully turned to left or
right*45 – 60 A
) Measured MOT
Current
Engine running at idle
speedSteering wheel at free 0 A
Steering wheel at fully turned to left or
right*45 – 60 A
) Vehicle Speed Engine running and vehicle at stop 0 km/h
) Engine Speed Engine running at idle speed after warming up 700 ± 50 rpm
) Motor Drive VoltageEngine running at idle
speedSteering wheel at free 0.8 – 1 V
Steering wheel at fully turned to right *5.5 – 8.5 V
) System Power Status
Ignition switch ONON
) IGN switch StatusON
) Torque sensor Status
Engine running at idle speedON
) Fail Safe FET StatusON

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-13
Motor Drive Voltage (V)
This parameter indicates the voltage between motor
terminals.
System Power Status (EPS System Power, ON, OFF)
This parameter indicates input status of EPS system
power supply.
IGN switch Status (ON, OFF)
This parameter indicates the condition of the power
supply through the ignition switch.Torque sensor Status (ON, OFF)
This parameter indicates the output status of the torque
sensor power supply.
Fail Safe FET Status (ON, OFF)
This parameter indicates the status of the motor drive
power supply circuit.
P/S System Symptom DiagnosisS6RW0D6304008
This section describes trouble diagnosis of the P/S system parts whose trouble is not indicated by the on-board
diagnostic system (self-diagnostic function). When no malfunction is indicated by the on-board diagnostic system
(self-diagnosis function) and assuredly those steering basic parts as described in “Steering Symptom Diagnosis in
Section 6A” are all in good condition, check the following power steering system parts which may be a possible cause
for each symptom of the steering.
Condition Possible cause Correction / Reference Item
Steering wheel feels
heavy (Perform “Steering
Force Check:” before
diagnosis.)Steering wheel installed improperly
(twisted)Install steering wheel correctly.
Poor performance of P/S motorCheck P/S motor referring to “P/S Motor and
Its Circuit Inspection”.
Poor performance of torque sensorCheck torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Steering gear case assembly
malfunctionReplace steering gear case assembly.
Poor performance of vehicle speed
signal from BCMCheck vehicle speed signal circuit referring to
“DTC C1121 / C1123 / C1124: Vehicle Speed
Signal Circuit Failure”.
Steering wheel feels
heavy momentarily when
turning it to the left or
rightSteering gear case assembly
malfunctionReplace steering gear case assembly.
Poor recovery from turnsPoor performance of torque sensorCheck torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Steering gear case assembly
malfunctionReplace steering gear case assembly.
Vehicle pulls to one side
during straight drivingPoor performance of torque sensorCheck torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Steering gear case assembly
malfunctionReplace steering gear case assembly.
Abnormal noiseP/S motor (built in steering gear case
assembly) malfunctionReplace steering gear case assembly.
No idle upP/S control module faultyCheck P/S control module referring to
“Inspection of P/S Control Module and Its
Circuits”.