2006 SUZUKI SX4 Ignition system

Downloaded from www.Manualslib.com manuals search engine Steering Wheel and Column: 6B-6
3) Install steering column upper cover (1) and lower
cover (2).
CAUTION!
When installing covers, be careful so that
each lead wire is not caught between covers.
Otherwise, each lead wire is damaged.

4) Install steering wheel to steering column. Refer to
“Steering Wheel Removal and Installation”.
5) Connect negative (–) cable to battery.
6) Enable air bag system referring to “Enabling Air Bag
System in Section 8B”.
Centering Contact Coil Cable AssemblyS6RW0D6206004
1) Check that vehicle’s wheels (front tires) are set at
straight-ahead position.
2) Check that ignition switch is at LOCK position.
3) Turn contact coil counterclockwise slowly with a light
force till contact coil will not turn any further.
NOTE
Contact coil can turn about 5 turns at the
maximum, that is, if it is at the center
position, can turn about two and a half turns
both clockwise and counterclockwise.

4) From the position where contact coil became unable
to turn any further (it stopped), turn it back clockwise
about two and a half rotations and align center mark
with alignment mark (1).
Contact Coil Cable Assembly InspectionS6RW0D6206005
Refer to “Contact Coil Cable and Its Circuit Check in
Section 8B”.
Steering Column Removal and InstallationS6RW0D6206008
CAUTION!
Once the steering column is removed from
the vehicle, the column is extremely
susceptible to damage.
• Dropping the column assembly on its end
could collapse the steering shaft or loosen
the plastic shear pins which maintain
column length.
• Leaning on the column assembly could
cause it to bend or deform.
Any of the damage could impair the column’s
collapsible design.
Steering column mounting nuts should not
be loosened with steering shaft joint upper
side bolt tightened as this could cause
damage to shaft joint bearing.

NOTE
When servicing steering column or any
column-mounted component, remove
steering wheel. But when removing steering
column simply to gain access to instrument
panel components, leave steering wheel
installed on steering column.

3. Standard screw 4. Tapping screw
2
1
3
4
I6RW0B620003-01
I4RS0A620012-01
1
I4RS0A620013-01

Downloaded from www.Manualslib.com manuals search engine Steering Wheel and Column: 6B-8
3) Align flat part “a” of steering lower shaft (1) with bolt
hole “b” of shaft joint (2) of column as shown. Then
insert lower shaft into shaft joint of steering column.
4) Tighten lower shaft upper joint bolt (3) to specified
torque.
CAUTION!
After tightening column nuts, tighten steering
shaft upper joint bolt. Otherwise, shaft joint
bearing is damaged.

Tightening torque
Steering lower shaft assembly upper joint bolt
(a): 25 N·m (2.5 kgf-m, 18.5 lb-ft)
5) Install lighting switch and wiper switch to steering
column.
6) (Immobilizer model)
Install immobilizer control module from steering
column, referring to “ICM Removal and Installation in
Section 10C”.
7) Install contact coil cable assembly and steering
wheel referring to “Contact Coil Cable Assembly
Removal and Installation” and “Steering Wheel
Removal and Installation”.
8) Connect negative (–) cable to battery.
9) Enable air bag system referring to “Enabling Air Bag
System in Section 8B”.
Steering Column InspectionS6RW0D6206009
Check steering column for damage and operation
referring to “Checking Steering Column for Accident
Damage”.
Ignition Switch Cylinder Assembly Removal
and Installation (Non- Keyless Start Model)
S6RW0D6206010
Removal
1) Disconnect negative (–) cable at battery.
2) Disable air bag system referring to “Disabling Air
Bag System in Section 8B”.
3) Remove steering column upper and lower covers.
4) (Immobilizer model)
Remove immobilizer control module referring to
“ICM Removal and Installation in Section 10C”.
5) Remove ignition switch cylinder assembly as follows.
a) Turn ignition key to “ACC” position.
b) Insert 2 mm (0.078 in.) rod (2) through hole (3)
and push ignition switch cylinder lock.
c) Detach ignition switch cylinder assembly (1) from
steering lock assembly (4).
Installation
1) Install ignition switch cylinder assembly as follows.
a) Turn ignition key to “ACC” position.
b) In this state, push ignition switch cylinder
assembly into steering lock assembly till it clicks.
2) (Immobilizer model)
Install immobilizer control module referring to “ICM
Removal and Installation in Section 10C”.
3) Install upper and lower cover and screws.
4) Connect negative (–) cable to battery.
5) Enabling air bag system referring to “Enabling Air
Bag System in Section 8B”.
6) (Immobilizer model)
If ignition switch cylinder assembly (that is ignition
key) has replaced, register ignition key transponder
code to ECM referring to “Registration of the Ignition
Key in Section 10C”.
1 2
“a”“b”
3, (a)
I5RW0A620007-01
2
3
1
4
I5JB0A620025-01

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-1
Ste eri ng
Power Assisted Steering System
Precautions
P/S System NoteS6RW0D6300001
NOTE
All steering gear fasteners are important attaching parts in that they could affect the performance of
vital parts and systems, and/or could result in major repair expense. They must be replaced with one of
the same part number or with an equivalent part if replacement becomes necessary. Do not use a
replacement part of lesser quality or substitute design. Torque values must be used as specified
during reassembly to assure proper retention of these parts.

Precautions in Diagnosing TroublesS6RW0D6300002
• Take a note of DTC indicated on the SUZUKI scan tool.
• Before inspection, be sure to read “Precautions for Electrical Circuit Service in Section 00” and understand what is
written there.
• DTC C1122 (engine speed signal failure) is indicated when ignition switch is at ON position and engine is not
running, but it means there is nothing abnormal if indication changes to a normal one when engine is started.
• As DTC is stored in memory of the P/S control module, be sure to clear memory after repair by performing the
procedure described in “DTC Clearance”.

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 Power Assisted Steering System: 6C-3
EPS Diagnosis General DescriptionS6RW0D6301002
The P/S system in this vehicle is controlled by the P/S control module. The P/S control module has an on-board
diagnostic system which detects a malfunction in this system. When diagnosing troubles, be sure to have full
understanding of the outline of “On-Board Diagnostic System Description” and each item in “Precautions in
Diagnosing Troubles”, and then execute diagnosis according to “EPS System Check”.
On-Board Diagnostic System DescriptionS6RW0D6301003
The P/S control module performs the on-board diagnosis (self-diagnosis) on the system and operates the “EPS”
warning light (1) as follows.
• The “EPS” warning light lights when the ignition switch is turned to ON position (but the engine at stop) regardless
of the condition of the P/S control system. This is only to check if the “EPS” warning light is operated properly.
• If the areas monitored by the P/S control module is free from any trouble after the engine start (while engine is
running), the “EPS” warning light turns OFF.
• When the P/S control module detects a trouble which has occurred in the monitored areas the “EPS” warning light
comes ON while the engine is running to warn the driver of such occurrence of the trouble and at the same time it
stores the exact trouble area in memory inside of the P/S control module.
Driving Cycle
A “Driving Cycle” consists of engine startup and engine shutoff.
3 Driving Cycles Detection Logic
The malfunction detected in the first and second driving cycle is stored in P/S control module memory (in the form of
pending DTC) but the “EPS” warning light does not light at these time. It lights up at the third detection of same
malfunction also in the next driving cycle.
1
I7RW01632002-01

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 6C-6 Power Assisted Steering System:
NOTE
• As execution of “DTC Clearance” will clear all DTCs, be sure to record all DTCs before service.
• DTC C1122 is indicated when ignition switch is at ON position and engine is not running, it means
that nothing is abnormal.
• Current DTC and history DTC can be identified by condition of the “EPS” warning light.
“EPS” warning light operates as follows.

8) Steering symptom diagnosis and P/S system
symptom diagnosis
1) Check and repair according to “Steering Symptom
Diagnosis in Section 6A” and “P/S System Symptom
Diagnosis”.
Are check and repair complete?Go to Step 11. Check and repair
malfunction part(s), and
go to Step 11.
9) Troubleshooting for DTC
1) Check and repair according to applicable DTC diag. flow.
Are check and repair complete?Go to Step 11. Check and repair
malfunction part(s), and
go to Step 11.
10) Intermittent problems check
1) Check for intermittent problems referring to “Intermittent
Problems Check”.
Is there any faulty condition?Repair or replace
malfunction part(s), and
go to Step 11.Go to Step 11.
11) Final confirmation test
1) Clear DTC if any.
2) Perform final confirmation test referring to “Final
Confirmation Test”.
Is there any problem symptom, DTC or abnormal condition?Go to Step 6. End. Step Action Yes No
Current DTC is set.
(Abnormality exists at
present.)Only history DTC is set.
(Faulty condition occurred once
in the past, but normal condition
is detected at present.)Current and history DTC
exist.
“EPS” warning light
after engine startedRemains ON. Turns OFF. Remains ON.