2007 SUZUKI SWIFT 1a 124

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 6C-10 Power Assisted Steering System:
) C1121 No vehicle speed signal
(60 seconds or more) Vehicle speed signal is 0 km/h
even though engine speed is
more than 4000 rpm for more than
60 seconds continuously (before
elapse of 5 min from engine start)
or vehicle speed signal is 0 km/h
even though engine speed is
more than 2500 rpm for more than
60 seconds continuously (after
elapse of 5 min for engine start). • Vehicle speed signal circuit
• Wheel speed sensor
•ECM
• P/S control module
• ABS control module
• CAN communication circuit
Not
applicable
) C1122 Engine speed signal Engine speed signal is less than
220 rpm for more than 0.8
seconds.
or
Engine speed signal is less than
220 rpm for more than 20
seconds continuously even
though vehicle speed signal is
more than 50 km/h.• Engine speed signal circuit
•ECM
• P/S control module
• Vehicle speed signal
1 driving
cycle
) C1123 No vehicle speed signal
(30 seconds or more) Vehicle speed signal is 0 km/h
with continuously more than 3
driving cycles even though engine
speed is more than 4000 rpm for
more than 30 seconds
continuously (before elapse of 5
min from engine start).
or
vehicle speed signal is 0 km/h
with continuously more than 3
driving cycles even though engine
speed is more than 2500 rpm for
more than 30 seconds
continuously (after elapse of 5 min
for engine start). • Vehicle speed signal circuit
• Wheel speed sensor
•ECM
• P/S control module
• ABS control module
• CAN communication circuit
3 driving
cycles
) C1124 Vehicle speed performance
(Impossible deceleration) Vehicle speed signal is less than 5
km/h for more
than 5 seconds
continuously with more than
specified deceleration speed (–20
m/s
2) from over 20 km/h. Not
applicable
) C1141 P/S motor circuit voltage Voltage between both motor drive
circuits is more than 8.5 V or less
than 0.2 V for 0.5 seconds
continuously while motor is not
drived.
• P/S motor circuit
• P/S motor
• P/S control module1 driving
cycle
) C1142 P/S motor circuit range /
performance Measured motor drive current is
more than 10 A as compared with
target motor drive current. 1 driving
cycle
DTC No. Detecting item
Detecting condition
(DTC will set when detecting) Trouble area MIL

Downloaded from www.Manualslib.com manuals search engine 6C-12 Power Assisted Steering System:
Scan Tool Data Definitions
Battery Voltage
This parameter indicates battery positive voltage.
TQS 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.
TQS Main Torque (Torque Sensor Main Torque, N ⋅m)
The torque sensor is installed to detect the steering force
and the steering directio n. It consists of two
potentiometers and the main torque sensor is one of
these.
TQS Sub Torque (Torque Sensor Sub Torque, N ⋅m)
The torque sensor is installed to detect the steering force
and the steering directio n. 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.
Assist 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. Motor Control (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 a ssist amount. This parameter
indicates that control value.
Motor Monitor (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 co mparing 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 diagnos is of the electric power
steering system.
Motor Volt (V)
This parameter indicates the voltage between motor
terminals.
Ignition switch (ON, OFF)
This parameter indicates the condition of the power
supply through the ignition switch.
Visual InspectionS7RS0B6304007
Visually check the following pats and system.
P/S System Symptom DiagnosisS7RS0B6304008
This section describes trouble diagnosis of the P/S system parts whose trouble is not indicated by the on-board
diagnostic system (self-diagnostic functi on). When no malfunction is indicated by the on-board diagnostic system
(self-diagnosis function) and those stee ring basic parts as described in “Steering Symptom Diagnosis in Section 6A”
are all in good condition, check the following power steer ing system parts which may be a possible cause for each
symptom of the steering. Inspection Item Referring section
Battery Level, leakage, color “Batte ry Description in Section 1J”
Connectors of electric wire
harness Disconnection friction “Intermittent and Poor
Connection Inspection in Section 00”
Fuses Burning “Cautions in Body Electric al System Servicing in Section 9A”
Parts Installation, damage
Other parts that can be checked visually
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 torque sensor Check torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Poor performance of P/S motor Check motor referring to “P/S Motor and Its
Circuit Inspection”.
Steering gear case assembly faulty Replace.
Poor performance of vehicle speed
signal from ECM Check vehicle speed signal circuit referring to
“DTC C1121 / C1123 / C1124: VSS Circuit
Failure”.

Downloaded from www.Manualslib.com manuals search engine 6C-26 Power Assisted Steering System:
DTC C1121 / C1123 / C1124: VSS Circuit FailureS7RS0B6304017
DTC C1121: No Vehicle Speed Signal (60 Seconds or More)
DTC C1123: No Vehicle Speed Signal (30 Seconds or More)
DTC C1124: Vehicle Speed Performance (Impossible Deceleration)
Wiring Diagram
DTC Detecting Condition and Trouble Area
M
BRNRED/
BLU
BLK
RED
E52-14
E52-12
E23-4
E23-26
E23-25 E51-1
E51-2
[A ]
12
3
4 5 67
89
11
10
12 13
141516
17 18 19 20
5V
PPL
E52-4
8
5
12V
E49-2BLK
12V
12V
6REDRED/ BLKWHT
7WHTWHT/BLKWHTBLK BLK
111
2
[B ]
9
LT GRN
/BLKE52-1 E49-1
GRNGRNWHTBLK
WHY
10
3
4
4
4
4
1 2
12
I7RS0B630009-01
[A]: Connector “E52” (viewed from harness side)
4. Fuse9. ABS/ESP® control module
[B]: Connector “E49” (viewed from harness si de)5. ECM 10. Individual circuit fuse box No.1
1. Main fuse box 6. Left-front wheel speed sensor11. Vehicle speed signal circuit
2. Ignition switch 7. Right-front wheel speed sensor 12. Engine speed signal circuit
3. Junction block assembly 8. P/S control module
DTC detecting condition Trouble area
DTC C1121:
Vehicle speed signal is 0 km/h even though engine speed
is more than 4000 rpm for more than 60 seconds
continuously (before elapse of 5 min from engine start) or
vehicle speed signal is 0 km/h even though engine speed
is more than 2500 rpm for more than 60 seconds
continuously (after elapse of 5 min for engine start).
(1 driving cycle detection logic but MIL does not light up)
DTC C1123:
Vehicle speed signal is 0 km/h with continuously more
than 3 driving cycles even though engine speed is more
than 4000 rpm for more than 30 seconds continuously
(before elapse of 5 min from engine start) or vehicle speed
signal is 0 km/h with continuously more than 3 driving
cycles even though engine speed is more than 2500 rpm
for more than 30 seconds continuously (after elapse of 5
min for engine start).
(3 driving cycle detection logic)
DTC C1124:
Vehicle speed signal is less than 5 km/h for more than 5
seconds continuously with more than specified
deceleration speed (–20 m/s
2) from over 20 km/h.
(1 driving cycle detection logic but MIL does not light up) • Vehicle speed signal circuit
• Wheel speed sensor
•ECM
• P/S control module
• ABS/ESP®
control module
• CAN communication circuit

Downloaded from www.Manualslib.com manuals search engine 6C-28 Power Assisted Steering System:
DTC C1122: Engine Speed SignalS7RS0B6304018
NOTE
DTC C1122 (engine speed signal failure) is indicated when ignition switch is at ON position and engine
is not running, but means there is nothing abnormal if indication changes to a normal one when
engine is started.

Wiring Diagram
Refer to “DTC C1121 / C1123 / C1124: VSS Circuit Failure”.
DTC Detecting Condition and Trouble Area DTC detecting condition Trouble area
Engine speed signal is less than 220 rpm for more than
0.8 seconds.
or
Engine speed signal is less than 220 rpm for more than 20
seconds continuously even though vehicle speed signal is
more than 50 km/h.
(1 driving cycle detection logic) • Engine speed signal circuit
•ECM
• P/S control module
• Vehicle speed signal circuit

Downloaded from www.Manualslib.com manuals search engine 8-ii Table of Contents
DTC B1062 / B1066: Driver / Passenger Side-Air Bag Initiator Circuit Resistance Low .......... 8B-67
DTC B1063 / B1067: Driver / Passenger Side- Air Bag Initiator Circuit S hort to Ground .......... 8B-70
DTC B1064 / B1068: Driver / Passenger Side- Air Bag Initiator Circu it Short to Power
Circuit .............................................................. 8B-73
DTC B1071: Forward-Sensor Performance Problem ........................................................... 8B-76
DTC B1072: Forward-Sensor Communication Error ................................................................ 8B-76
DTC B1073: Forward-Sensor Circuit Short to Ground ............................................................ 8B-76
DTC B1074: Forward-Sensor Circuit Short to Power Circuit or Open ..................................... 8B-78
DTC B1081 / B1091: Driver / Passenger Side- Sensor Performance Probl em ......................... 8B-80
DTC B1082 / B1092: Driver / Passenger Side- Sensor Communication Erro r .......................... 8B-80
DTC B1083 / B1093: Driver / Passenger Side- Sensor Circuit Short to Ground ....................... 8B-80
DTC B1084 / B1094: Driver / Passenger Side- Sensor Circuit Short to Power Circuit or
Open ............................................................... 8B-81
DTC B1085 / B1095: Wrong Side-Sensor (Driver Side / Passenger) ID ........................... 8B-83
DTC B1361 / B1365: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Resistance
High ................................................................. 8B-84
DTC B1362 / B1366: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Resistance
Low ................................................................. 8B-86
DTC B1363 / B1367: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Short to
Ground ............................................................ 8B-88
DTC B1364 / B1368: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Short to
Power Circuit ................................................... 8B-90
Contact Coil Cable and Its Circuit Check .......... 8B-93 Inspection of Intermittent and Poor
Connections .................................................... 8B-95
Repair and Inspection Required after Accident .......................................................... 8B-96
Repair Instructions ............ ................................8B-98
Disabling Air Bag System.................................. 8B-98
Enabling Air Bag System .................................. 8B-99
SDM Removal and Installation ........................ 8B-100
SDM Inspection ............................................... 8B-101
Driver Air Bag (Inflato r) Module Removal and
Installation ..................................................... 8B-101
Driver Air Bag (Inflator) Module Inspection ..... 8B-103
Passenger Air Bag (Inflator) Module Removal and Installation .............................................. 8B-103
Passenger Air Bag (I nflator) Module
Inspection ...................................................... 8B-105
Side-Air Bag (Inflator) Module Removal and
Installation ..................................................... 8B-105
Side-Air Bag (Inflator) Inspection .................... 8B-107
Side Curtain-Air Bag (Inflator) Module Removal and Installation ............................... 8B-107
Side Curtain-Air Bag (Inflator) Module Inspection ...................................................... 8B-109
Forward-Sensor Removal and Installation ...... 8B-109
Forward-Sensor In spection ............................. 8B-110
Side-Sensor Removal and Installation ............ 8B-110
Side-Sensor Inspection ................................... 8B-111
Passenger Air Bag (Inflator) Module Repair
Harness Installation....................................... 8B-112
Air Bag (Inflator) Module and Seat Belt Pretensioner Disposal ................................... 8B-113
Deployed Air Bag (Inflator) Module and Activated Seat Belt Pretensioner Disposal.... 8B-124
Specifications .................. .................................8B-125
Tightening Torque Specifications .................... 8B-125
Special Tools and Equipmen t .........................8B-125
Use of Special Tools ....................................... 8B-125
Recommended Service Material ..................... 8B-127
Special Tool .................................................... 8B-127

Downloaded from www.Manualslib.com manuals search engine 8B-124 Air Bag System:
21) Disconnect adapter cable (special tool) from air bag (inflator) module or seat belt pretensioner as soon as
possible. This will preven t adapter cable (special
tool) from damage due to possible contact with hot
air bag (inflator) module or hot seat belt
pretensioner.
22) Check adapter cable connector as follows. Adapter cable connector (special tool) is designed to
be reused. However it should be inspected for
damage after deployment and replaced if necessary.
23) With air bag (inflator) modules deployed and seat belt pretensioners acti vated, vehicle may be
scrapped in the same manner as non-air bag system
/ seat belt pretensioner equipped vehicle.
NOTE
Remaining steps are to be followed in the
unlikely event that air bag (inflator) module
did not deploy or seat belt pretensioner did
not activate.

24) Remove undeployed air bag (inflator) module(s) and/ or inactivated seat belt pretensioner(s) from vehicle.
For driver air bag (inflator) module, refer to “Driver
Air Bag (Inflator) Module Removal and Installation”.
For passenger air bag (inflator) module, refer to
“Passenger Air Bag (Inflator) Module Removal and
Installation”. For seat belt pretensioner, refer to
“Front Seat Belt Removal an d Installation in Section
8A”.
25) Temporarily store undeployed air bag (inflator) module referring to “Precautions on Service and
Diagnosis of Air Bag System” for details.
26) Contact your local distribu tor for further assistance.
Deployed Air Bag (Inflator) Module and
Activated Seat Belt Pretensioner Disposal
S7RS0B8206019
WARNING!
Failure to follow proper air bag (inflator)
module and seat belt pretensioner disposal
procedures can result in air bag deployment
and pretensioner activation which may cause
personal injury. The undeployed air bag
(inflator) module and the inactivated seat belt
pretensioner must not be disposed of
through normal refuse channels.
The undeployed air bag (inflator) module and
the inactivated seat belt pretensioner
contains substances that can cause severe
illness or personal injury if the sealed
container is damaged during disposal.

Deployed air bag (inflator) module and the activated seat
belt pretensioner can be disposed of through normal
refuse channels just like any other parts. For their
disposal, however, the following points should be noted.
• The air bag (inflator) module and the seat belt
pretensioner immediately after deployment / activation
is very hot. Wait for 30 minu tes to cool it off before
handling it.
• Never apply water, oil, etc. to deployed air bag (inflator) module and the activated seat belt
pretensioner to cool it off and be careful so that water,
oil etc. does not get on the deployed air bag (inflator)
module and the activated seat belt pretensioner.
• After the air bag (inflator) module has been deployed, the surface of the air bag may contain a powdery
residue. This powder consists primarily of cornstarch
(used to lubricate the bag as it inflates) and by-
products of the chemical reaction. As with many
service procedures, you should wear gloves and
safety glasses.
• When disposing of the deployed air bag (inflator) module and the activated seat belt pretensioner, be
sure to seal it in a vinyl bag.
• When air bag (inflator) module and seat belt pretensioner have been deployed / activated inside
the vehicle which is going to be scrapped, leave them
as installed to the vehicle.
• Be sure to wash your hand s with mild soap and water
after handling them.
IYSQ01820095-01
I3JA01820119-01

Downloaded from www.Manualslib.com manuals search engine 9B-8 Lighting Systems:
Headlight Switch (in Lighting Switch) Removal
and Installation
S7RS0B9206004
Removal1) Disconnect negative cable at battery.
2) Remove steering column hole cover (1).
3) Remove steering column covers (2). Turn steering wheel to acce ss steering column cover
screws (3).
4) Remove lighting switch (2 ) from combination switch
assembly (1) and disconnect its coupler (3).
Installation
Reverse removal procedure for installation.
Headlight Switch (in Lighting Switch)
Inspection
S7RS0B9206005
Check for continuity between terminals at each switch
position. If check result is not as specified, replace
switch.
Hazard Warning Switch Removal and
Installation
S7RS0B9206006
Removal 1) Disconnect negative (–) cable at battery.
2) Remove center ventilation louver (1) referring to
“Center Ventilation Louver Removal and Installation
in Section 7A”.
3) Disconnect coupler, and then remove hazard warning switch (2) from center ventilation louver (1)
while releasing the locks (3).
Installation
Reverse removal procedure for installation.
1
32
I4RS0B920004-02
1
2
3
I4RS0B920005-01
[A]: LH steering vehicle [B]: RH steering vehicle
Terminal
Shaft condition
OFF 5
3124
LOW
PASS
HI
LOW
PASS
HI LOW
PASS
HI
CLEARANCE
HEAD
HEADCLEARANCE
OFF
HI
PA S S
54321
54321
[A][B]
I5RS0D920004-02
1
2 3
I4RS0B920007-01