steering wheel SUZUKI SWIFT 2004 2.G Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine 4F-20 Electronic Stability Program:
NOTE
•{: Activated
• X: Deactivated
• *1: If two or more wheel speed sensor are defective, ABS warning lamp, EBD warning lamp and ESP ® warning lamp are lit and all the control functions are deactivated. If one wheel speed sensor is
defective, ABS warning lamp and ESP ® warning lamp are lit and ABS and TCS / stability control are
deactivated.
• *2: ESP ® OFF mode is cancelled and all control functions are activated.
• *3: EBD control function is activated only if po wer supply circuit is little low voltage malfunction.

Scan Tool DataS7RS0B4604024
The parameter data below are values measured with the scan tool when the normally operating vehicle is under the
following conditions. When taking measurements for comparis on by using the scan tool, be sure to check that the
vehicle is under the following conditions.
• Apply parking brake and block wheels.
• Ignition switch ON.
• Turn OFF air conditioning (if equipped).
• Set the wheel in straight-ahead position and hands off steering wheel.
• Turn OFF all electric loads (except ignition).
• Check that there is no DTC.
Scan Tool Data Definition
Battery Volt (V): Battery Voltage is an analog input
signal read by the ESP ® control module. Certain
ESP ® control module functions will be modified if the
battery voltage falls below or rises above
programmed thresholds.
Pump Motor Driver (V): This parameter indicates the
operational condition of the pump motor driver
(transistor).
RF Wheel Speed, LF Wheel Speed, RR Wheel Speed and LR Wheel Speed (km/h, MPH): Wheel speed
is ESP ® control module internal parameter. It is
computed by reference puls es from the wheel speed
sensor. Brake Switch (ON, OFF):
This switch signal informs
the ESP ® control module whether the brake is active
or not.
Master Cyl Press (MPa): Brake fluid pressure from
brake master cylinder.
G Sensor (lateral) (G): Lateral acceleration is
measured by yaw rate / G sensor assembly and
output to ESP ® control module by pulse signal.
Yaw rate sensor (Deg/s): Yaw rate sensor is measured
by yaw rate / G sensor assembly and output to
ESP® control module by pulse signal.
Steering angle Sen ( °): Steering wheel rotation angle
is measured by steering angle sensor and output to
ESP® control module by pulse signal.
Scan Tool Data Standards Condition
Battery Voltage 10.0 – 16.0 V —
Pump Motor Driver 0.0 V —
RF Wheel Speed 0 km/h, 0.0 MPH Veh icle is in stationary condition.
LF Wheel Speed 0 km/h, 0.0 MPH Veh icle is in stationary condition.
RR Wheel Speed 0 km/h, 0.0 MPH Vehic le is in stationary condition.
LR Wheel Speed 0 km/h, 0.0 MPH Veh icle is in stationary condition.
Brake Switch ON Brake pedal is depressed
OFF Brake pedal is released
Master Cyl Press 0 ± 0.8 MPa Brake pedal is released
G Sensor (lateral) 0 ± 0.1 G Vehicle is on the level
Yaw rate sensor 0 ± 4 deg/s Vehicle is on the level
Steering angle Sen 0 ± 3 ° Front wheels are in straight-ahead
position
Stability control INACTIVE Stability control system is not working
TCS control (brake) INACTIVE Brake function by TCS is not working
TCS control (engine) INACTIVE Torque control by TCS is not working
ESP ® off state (cont) ESP®
ON ESP
® OF
F switch is OFF condition
ESP® OFF ESP ® OFF switch is ON condition
Steering angle Sen Neutral Front wheels are in straight-ahead
position

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-21
Stability control (ACTIVE, INACTIVE): This indicates
stability control in acti vation / deactivation.
TCS control (brake) ( ACTIVE, INACTIVE): This
indicates brake function of TCS in activation /
deactivation.
TCS control (engine) (ACTIVE, INACTIVE): This
indicates torque control of TCS in activation /
deactivation. ESP®
off state (cont) (ESP ® ON, ESP ® OFF): State
of ESP ® OFF switch.
Steering angle Sen (Neutral, NON newtral): This
indicates steering wheel angle measured by steering
angle sensor is in straight-ahead or not.
Visual InspectionS7RS0B4604059
Check the following parts and systems visually.
ESP ® Warning Lamp Does Not Come ON at Ignition Switch ONS7RS0B4604008
Wiring Diagram
Circuit Description
Operation (ON/OFF) of ESP ® warning lamp is controlled by ESP ® control module through lamp driver module in
combination meter.
If ESP ® system is in good condition, ESP ® control module turns ESP ® warning lamp ON at the ignition switch ON,
keeps it ON for 2 seconds and then turns it OFF. If an abnormality in the system is detected, ESP ® warning lamp is
turned ON continuously by ESP ® control module. Also, it is turned ON continuously by lamp driver module when the
connector of ESP ® control module is disconnected.Inspection Item Referring section
Battery Level, leakage “Battery Description in Section 1J”
Connectors of electric wire
harness Disconnection, friction“Intermittent and Poor Connec
tion Inspection in Section
00”
Fuses Burning
Brake fluid Level, leakage “Brake Fluid Level Inspection in Section 4A”
Other parts that can be checked visually
[A] E85
161
15
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3233
34
35
36
37
38
39
40
41
42
43
44
45
46
47
WHTGRN
3
E85-13
E85-44REDWHT6 5E46-1E46-2
4 10
6
E85-16
E85-47BLKBLK
8
9
BLK/ORN
REDWHT
REDWHT
G37-4G37-2
G28-10G28-8
G28-16
12V
12VE85-32E85-1
E85-35
WHT/REDWHT/BLU
GRN/ORN
6
2
1
7 1112[B]
G37
E46124
53
67
891011121314124
53
67
891011
1213141516171819202122
[C] G28
12345678910111213141516
17181920212223242526272829303132
G28-31
RED/BLK
I6RS0B460010-01
[A]: ESP ® control module connector (viewed from terminal side) 3. Ignition switch 8. ESP ® warning lamp
[B]: BCM connector (viewed from harness side) 4. Junction block assembly 9. Lamp driver module
[C]: Combination meter connector (viewed from harness side) 5. BCM (included in junction
block assembly) 10. ESP
® hydraulic unit / control module assembly
1. Battery 6. CAN driver 11. Junction connector
2. Main fuse box 7. Combination meter 12. To steering angle sensor

Downloaded from www.Manualslib.com manuals search engine 4F-34 Electronic Stability Program:
DTC C1024: Steering Angle Sensor Circuit FailureS7RS0B4604029
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC C1027: ESP® OFF Switch Circuit FailureS7RS0B4604030
Wiring Diagram 6
Check wheel speed sensor
1) Refer to “Front / Rear Wheel Speed Sensor On-Vehicle
Inspection”, check output voltage or waveform.
Is specified voltage and/or waveform obtained? Substitute a known-
good ESP
® hydraulic
unit / control module
assembly and recheck. Replace wheel speed
sensor and recheck.
Step
Action YesNo
DTC Detecting Condition Trouble Area
• Steering angle sensor internal defect is detected by CPU in steering angle sensor.
• Steering angle sensor signal is out of specified range. • Steering angle sensor
• ESP
® control module
Step Action YesNo
1 Was “Electronic Stability Pr ogram Check” performed? Go to Step 2.Go to “Electronic
Stability Program
System Check”.
2 DTC check for ESP®
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP ®.
Are DTC U1073 and/or U1126 detected? Go to applicable DTC
diag. flow.
Go to Step 3.
3 Check sensor calibration
1) Calibrate steering angle sensor referring to “Sensor
Calibration”.
2) Clear all DTC(s) and check DTC for ESP ®.
Is DTC C1024 still detected? Go to Step 4.
Steering angle sensor
calibration was
incompleted.
4 Check steering angle sensor
1) Check steering angle sensor referring to “Steering Angle
Sensor On-Vehicle Inspection”.
Is it good condition? Substitute a known-
good ESP
® hydraulic
unit / control module
assembly and recheck. Replace steering angle
sensor.
[A]
E85
161
15
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3233
34
35
36
37
38
39
40
41
42
43
44
45
46
47
LT GRN/REDBLK/ORN
12V
E85-7
1 2
I6RS0B460018-01
[A]: ESP
® control module connector (viewed from terminal side) 1. ESP ® OFF Switch 2. ESP ® hydraulic unit control module assembly

Downloaded from www.Manualslib.com manuals search engine 4F-54 Electronic Stability Program:
Repair Instructions
ESP® Hydraulic Unit Operation CheckS7RS0B4606025
1) Check that basic brake system other than ESP ® is
in good condition.
2) Check that battery voltage is 11 V or higher.
3) Lift up vehicle.
4) Set transmission to neutral and release parking brake.
5) Turn each wheel gradually by hand to check if braked ragging occurs. If it does, correct.
6) Connect SUZUKI scan tool to data link connector (DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool
7) Turn ignition switch to ON position and select menu press / depress in “HYDRAULIC CONTROL TEST”
under “miscellaneous test” (“MISC. TEST”) mode of
SUZUKI scan tool.
Refer to SUZUKI scan tool operator’s manual for
further details.
8) Perform the following checks with help of another person.
• Depressurization checkStep on brake pedal (1) and then select testing
wheel by SUZUKI scan tool and the wheel (2)
should be turned by another person’s hand. At this
time, check whether the wheel rotates freely due
to brake depressurization. • Pressurization check
Step off brake pedal (1) and then select testing
wheel by SUZUKI scan tool and the wheel (2)
should be turned by another person’s hand. At this
time, check whether the wheel locks due to brake
pressurization.
NOTE
Pressurization / Depressurization by SUZUKI
scan tool is available for 0.5 second.

9) Check for all 4-wheels condition respectively. If a faulty condition is found, replace hydraulic unit /
control module assembly.
10) After completing the check, turn ignition switch to OFF position and disconnect SUZUKI scan tool from
DLC.
Sensor CalibrationS7RS0B4606015
CAUTION!
If any DTC(s) other than C1075, C1076 or
C1078 are detected, sensor calibration can
not be completed. Repair the detected DTC
first.

NOTE
Steering angle sensor calibration is needed
when battery, “DOME” fuse or the steering
angle sensor is removed.
This sensor calibration can be done with/
without SUZUKI Scan Tool.
When ESP ® control module and/or yaw rate /
G sensor assembly is removed, sensor
calibration is needed with SUZUKI Scan Tool.

(A)
1
I4RS0B450003-01
I4RH01450021-01

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-55
Sensor Calibration (Using SUZUKI Scan Tool)1) Set steering wheel in straight-ahead position.
2) Connect SUZUKI scan tool to data link connector (DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool
3) Turn ignition switch to ON position and confirm that
only any of DTC(s) C1075, C1076 and/or C1077 is
detected. If any other DTC are detected, repair the
detected DTC.
4) Park and level the vehicle with parking brake, stop engine with ignition switch ON, set steering in
straight and without step ping on the brake pedal.
NOTE
Hold the above condition in Step 4) to
calibrate sensor correctly until sensor
calibration is completed.

5) Select menu “SENSOR CALIBRATION” under
“MISC. TEST” mode of SUZUKI scan tool and
calibrate sensor. Refer to scan tool operator's
manual for further derails.
6) After completing the calibra tion, turn ignition switch
to OFF position and disconnect SUZUKI scan tool
from DLC. Steering Angle Sensor Calibration (Not Using
SUZUKI Scan Tool)
1) Set steering wheel in straight-ahead position.
2) Connect battery terminals and/or fuse and start engine.
NOTE
When power is not supplied to the steering
angle sensor by removing battery or fuse,
DTC C1075 is detected and SLIP indicator
lamp (1) flashes.
If DTC other than C1075 is detected, SLIP
indicator lamp flushes and other indicator
illuminate. In that case, repair the detected
DTC first.

3) Drive vehicle straight on level ground at 15 km/h (9.5 mph) or above for few seconds without spinning
wheels. And confirm that SLIP indicator lamp is OFF.
ESP ® Hydraulic Unit / Control Module
Assembly On-Vehicle Inspection
S7RS0B4606027
CAUTION!
Never disassemble ESP ® hydraulic unit /
control module assembly, loosen blind plug
or remove motor. Pe rforming any of these
prohibited services will affect original
performance of ESP ® hydraulic unit / control
module assembly.

Check hydraulic unit for fluid leakage.
If any, repair or replace.
(A)
1
I4RS0B450003-01
1
I6RS0B460028-02

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-61
Front Wheel Encoder On-Vehicle InspectionS7RS0B4606033
Before inspect front wheel encoder, remove front drive
shaft or front wheel spindle referring to “Front Drive Shaft
Assembly Removal and Installation in Section 3A”.
• Check encoder (1) for being crack, damaged or deformed.
• Turn wheel and check if encoder rotation is free from eccentricity and looseness.
• Check that no foreign material is attached. If any faulty is found, cl ean encoder or replace wheel
bearing. Refer to “Front Wheel Hub, Steering Knuckle
and Wheel Bearing Removal and Installation in
Section 2B”.
Front Wheel Encoder Removal and InstallationS7RS0B4606034
CAUTION!
Front wheel encoder is included in front
wheel bearing. If front wheel encoder needs
to replaced, replace it as a front wheel
bearing.

For removal and installation of front wheel bearing,
referring to “Front Wheel Hub, Steering Knuckle and
Wheel Bearing Removal and Installation in Section 2B”.
Rear Wheel Encoder On-Vehicle InspectionS7RS0B4606035
Before inspect rear wheel encoder, hoist vehicle and
remove wheel.
• Check encoder (1) for being crack, damaged or deformed.
• Turn wheel and check if encoder rotation is free from eccentricity and looseness.
• Check that no foreign material is attached. If any faulty is found, cl ean encoder or replace rear
wheel hub assembly. Refer to “Rear Wheel Hub
Removal and Installati on in Section 2C”.
Rear Wheel Encoder Removal and InstallationS7RS0B4606036
CAUTION!
Rear wheel encoder is included in rear wheel
hub assembly. If rear wheel encoder needs to
replaced, replace it as a rear wheel hub
assembly.

For removal and installation of front wheel hub
assembly, referring to “Rear Wheel Hub Removal and
Installation in Section 2C”.
Master Cylinder Pressure Sensor On-Vehicle
Inspection
S7RS0B4606016
1) Calibrate yaw rate / G sens or assembly referring to
“Sensor Calibration”.
2) Check that basic brake system other than ESP ®
refer to “Brakes Diagnosi s Note in Section 4A”.
3) Connect SUZUKI scan tool to data link connector (DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool
1
I5JB0A450034-01
1
I6RS0B460038-03
(A)
1
I4RS0B450003-01

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-63
Yaw Rate Inspection1) Calibrate yaw rate / G sens or assembly referring to
“Sensor Calibration”.
2) Check yaw rate / G sensor assembly installation
condition.
3) Connect SUZUKI scan tool to data link connector (DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool
4) Turn ignition switch to ON position and select menu
“DATA LIST” mode of SUZUKI scan tool. Refer to
scan tool operator's manual for further derails.
5) Check “Yaw rate sensor” under “DATA LIST” of SUZUKI scan tool in the following vehicle conditions.
• Parking condition
• Drive vehicle in right turning condition with steering wheel fully turned
• Drive vehicle in left tu rning condition with steering
wheel fully turned
If yaw rate condition is ou t of specification, replace
yaw rate / G sensor assembly.
Yaw rate specification
NOTE
• Drive the vehicle on level ground and at 10 km/h (6.2 mph).
• Minimum turning radius is 5.2 m (17.1 ft).

Yaw Rate / G Sensor Assembly Removal and
Installation
S7RS0B4606018
CAUTION!
• When yaw rate / G sensor assembly is replaced, ESP ® control module needs zero
calibration. Perform zero calibration by
SUZUKI scan tool referring to “Sensor
Calibration”.
• Regarding yaw rate / G sensor assembly removal/installation, confirm specified
torque and never use impact wrench to
avoid damage.
• When handling the yaw rate / G sensor assembly, be careful not to drop it or apply
an impact to it.
If an excessive impact was applied, never
attempt disassembly or repair but replace
it with a new one.

Vehicle condition Yaw rate
Parking 0 ± 4 deg/s
Right turning 30 ± 4 deg/s
Left turning –30 ± 4 deg/s
(A)
1
I4RS0B450003-01
[A]: Right turning“a”: Approx 5.2 m (17.1 ft.)
[B]: Left turning
[A]
[B] “a”
“a”
I6RS0B460040-02

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-65
2) Turn ignition switch to ON position and select menu
“DATA LIST” mode of SUZUKI scan tool.
Refer to scan tool operator's manual for further
derails.
3) Check “Steering angle Sen” under “DATA LIST” of SUZUKI scan tool in th e following steering wheel
conditions.
• Front wheels in straight-ahead position
• Rotate steering wheel a round in clockwise (counter clockwise) from straight-ahead position
If steering angle condition is out of specification,
replace steering angle sensor.
Steering angle Specification
Steering Angle Sensor Removal and InstallationS7RS0B4606021
Refer to “Steering Angle Sensor Removal and
Installation in Section 6B”.
Steering Angle Sensor InspectionS7RS0B4606022
• Check sensor for dents, cracks or deformation.
• Check sensor connector (sensor side and harness
side) and sensor connector lock mechanism for
damage or crack.
• Check connector terminals for bend, corrosion or rust.
If it is found faulty, replace steering angle sensor (1).
ESP ® OFF Switch Removal and InstallationS7RS0B4606023
Removal
1) Disconnect negative (–) cable at battery.
2) Remove rear console box referring to “Console Box Components in Section 9H”.
3) Disconnect ESP ® OFF switch coupler.
4) Remove ESP ® OFF switch (1) from rear console
box (2).
Installation
Reverse removal procedure.
ESP ® OFF Switch InspectionS7RS0B4606024
Check for continuity between terminals at each switch
position.
If check result is not as specified, replace ESP ® OFF
switch.
Vehicle condition Steering angle
Front wheels in straight-
ahead position 0
± 3 °
Rotate steering wheel a
round in clockwise 360
± 3°
Rotate steering wheel a
round in counterclockwise –360
± 3 °
I6JB01460032-01
1
I6JB01460033-01
[A]: Free [B]: Push
1
I6RS0B460042-02
[A]
[B]2345
2
3
4
1
5
I6RS0B460043-02

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 Diagnosi s.................... 6A-1
Precautions........................................................... 6A-1
Precautions for Steering Diagnosis ..................... 6A-1
Diagnostic Information and Procedures ............ 6A-2 Steering Symptom Diagnosis .............................. 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 Angle Sensor Removal and Installation ......................................................... 6B-6
Steering Angle Sensor Inspection ....................... 6B-6
Steering Column Removal and Installation ......... 6B-7
Steering Column Inspecti on ................................ 6B-8
Ignition Switch Cylinder Assembly Removal and Installation (Non- Keyless Start Model)...... 6B-9
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 Equipmen t ........................... 6B-11
Special Tool ...................................................... 6B-11
Power Assisted Steering System........... 6C-1
Precautions........................................................... 6C-1 Steering System Note .........................................6C-1
Precautions in Diagnosing Troubles ...................6C-1
General Description .............................................6C-2 P/S System Description ......................................6C-2
EPS Diagnosis General Descr iption ...................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
Scan Tool Data .................................................6C-11
Visual Inspection ...............................................6C-12
P/S System Symptom Diagnosis ......................6C-12
Serial Data Link Circuit Check ..........................6C-13
“EPS” Warning Light Do es Not Come ON with
Ignition Switch Turn ed ON before Engine
Starts ...............................................................6C-15
“EPS” Warning Light Remains ON Steady after Engine Starts ..........................................6C-16
DTC C1113: Steering Torque Sensor (Main and Sub) Circuit Correlation ............................6C-17
DTC C1114: Steering Torque Sensor Reference Power Supply Circuit .....................6C-19
DTC C1117: Steering Torque Sensor Failure Signal Circuit Low ...........................................6C-21
DTC C1118: Steering Torque Sensor Failure Signal Circuit High...........................................6C-22
DTC C1119: Steering Torque Sensor Power Supply Circuit ..................................................6C-24
DTC C1121 / C1123 / C1124: VSS Circuit
Failure .............................................................6C-26
DTC C1122: Engine Speed Signal....................6C-28
DTC C1141 / C1142 / C1143 / C1145: P/S Motor Circuit Failure ........................................6C-30
DTC C1153: P/S Control Module Power Supply Circuit Voltage Low .............................6C-32
DTC C1155: P/S Control Module Failure ..........6C-33
P/S Control Module Power Supply and Ground Circuit Check ......................................6C-34
Inspection of P/S Control Module and Its Circuits ............................................................6C-35

Downloaded from www.Manualslib.com manuals search engine 6-ii Table of Contents
Steering Wheel Play Check ..............................6C-39
Steering Force Check .......................................6C-39
Repair Instructions ........... .................................6C-40
Steering Gear Case Assembly Components ....6C-40
Tie-Rod End Boot On-Vehic le Inspection .........6C-41
Tie-Rod End Removal and Installation..............6C-41
Tie-Rod End Inspection.....................................6C-42
Steering Shaft Joint On-Vehicle Inspection.......6C-42
Steering Gear Case Assembly Removal and Installation .......................................................6C-42
Steering Rack Boot Inspec tion ..........................6C-43
Tie-Rod / Rack Boot Removal and Installation ..6C-43 Steering Rack Plunger Removal and
Installation .......................................................6C-45
Steering Rack Plunger Inspection .....................6C-45
P/S Control Module Removal and Installation...6C-46
Torque Sensor and Its Circuit Inspection ..........6C-46
P/S Motor and Its Circuit Inspection ..................6C-47
Specifications ..................... ................................6C-48
Tightening Torque Specifications ......................6C-48
Special Tools and Equipmen t ...........................6C-49
Recommended Service Material .......................6C-49
Special Tool ......................................................6C-49