2008 SUZUKI SWIFT 001

Downloaded from www.Manualslib.com manuals search engine 6B-7 Steering Wheel and Column:
Steering Column Removal and InstallationS7RS0B6206006
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.

Removal
WARNING!
Never rest a steering column assembly on
the steering wheel with the air bag (inflator)
module face down and column vertical.
Otherwise, personal injury may result.

1) Disconnect negative (–) cable at battery.
2) Disable air bag system. Re fer to “Disabling Air Bag
System in Section 8B”.
3) Remove steering wheel and contact coil cable assembly referring to “S teering Wheel Removal and
Installation” and “Contact Coil Cable Assembly
Removal and Installation”.
4) Detach lighting switch and wiper switch from steering column.
5) Remove immobilizer cont rol module from steering
column, referring to “Immo bilizer Control Module
(ICM) Removal and Installation in Section 10C”.
6) Remove steering column hole cover.
7) Remove steering joint cover.
8) Make alignment marks (4) on lower shaft (1) and shaft joint of steering column (2) and lower shaft (1)
and pinion shaft (3) for a guide during reinstallation.
9) Remove lower shaf t joint bolts (5).
10) Remove steering lower shaft (1).
11) Remove steering column mounting nuts (1).
12) Remove steering column from vehicle.
I4RS0A620016-01
1
1
I4RS0A620017-01

Downloaded from www.Manualslib.com manuals search engine 6B-11 Steering Wheel and Column:
Specifications
Tightening Torque SpecificationsS7RS0B6207001
NOTE
The specified tightening torque is also described in the following.
“Steering Wheel and Column Construction”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
Special Tools and Equipment
Special ToolS7RS0B6208001
Fastening part Tightening torque
Note
N ⋅mkgf-mlb-ft
Steering shaft nut 33 3.3 24.0 )
Steering column nut 14 1.4 10.5 )
Steering shaft joint bolt 25 2.5 18.5 ) / )
09944–36011
Steering wheel remover
)

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-1
Steeri ng
Power Assisted Steering System
Precautions
Steering System NoteS7RS0B6300001
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 TroublesS7RS0B6300002
• Take a note of DTC indicated on the SUZUKI scan tool.
• Before inspection, be sure to read “Pre cautions 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 indica tion 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 DescriptionS7RS0B6301001
This power steering (P/S) system consists of a P/S control module (3), a torque sensor (4), a 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
signals from the torque sensor and vehicle speed signal from ECM. 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
• Engine speed signal
• P/S motor
• P/S control module.
2. Steering column 7. Battery9. ABS/ESP® control module
6. Steering gear case assembly 8. ECM10. Wheel speed sensor (right-front, left-front)
7
3
9
10
10
1
2
4
5
6
8
I7RS0B630001-01

Downloaded from www.Manualslib.com manuals search engine 6C-4 Power Assisted Steering System:
Schematic and Routing Diagram
EPS System Wiring Circuit DiagramS7RS0B6302001
M
5V
BRNRED/
BLU
BLK
RED
WHT
BLU
GRN
BRN YEL
E52-11
E52-14E52-12
E23-4
E23-26
E23-25 E51-1
E51-2
E52-18
E53-5
E53-7
E52-6
E52-8
E53-2
E52-9
E52-16
E52-19
GRY
PPL/WHT
[A ]
[E ]
12 3
4 5 67
89
11
10
12 13
141516
17 18 19 20
1
2
[B ][C ]
1210 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
[D]
5V
PPL
E52-4
11
12
13 14
15
10
9
16
12V
5V
5V
12V
REDE52-20E53-6
E53-4
E53-1
7654321
5
REDRED/
BLKWHT
6WHTWHT/BLKWHTBLK
12V
12V
17BLK
GRY
LT GRN
/BLK
E52-1
E52-5
E49-1
GRNGRNWHTBLK
WHY
G28-25G28-31
RED/BLK
18
3
4
4
7 8
4
4
1 2
4
E49-2BLK
I7RS0B630002-01
[A]: Connector “E52” (viewed from harness side) 4. Fuse 12. P/S motor
[B]: Connector “E49” (viewed from harness side ) 5. Left-front wheel speed sensor 13. Shield
[C]: Connector “E51” (viewed from harness side) 6 . Right-front wheel speed sensor 14. Torque sensor
[D]: Connector “G28” (viewed from harness side) 7. Combination meter 15. Torque sensor amplifier
[E]: Connector “E53” (viewed from harness side) 8. “EPS” warning light16. To ECM, BCM, Air bag SDM and ABS control module assembly
1. Main fuse box 9. Date link connector (DLC) 17. ABS/ESP ® control module
2. Ignition switch 10. ECM18. Individual circuit fuse box No.1
3. Junction block assembly 11. P/S control module

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 CheckS7RS0B6304001
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
E49-1 Main power supply for internal memory
and EPS motor E52-9 Ground for torque sensors
E49-2 Ground for P/S control module E52-10 —
E51-1 Motor output 1 E52-11 Serial communication for data link
connector
E51-2 Motor output 2 E52-12 Engine speed signal
E52-1 Ignition switch signal for P/S control
module E52-13 —
E52-2 — E52-14 P/S operation signal (idle up signal)
E52-3 — E52-15 —
E52-4 Vehicle speed signal E52-16 Torque sensor internal failure signal
E52-5 “EPS” warning light E52-17 —
E52-6 Torque sensor signal (Sub) E52-18 Torque sensor signal (Main)
E52-7 — E52-19 Ground for shield wire
E52-8 Main power supply for torque sensor E52-20 5 V reference power supply for torque
sensor
Step
Action YesNo
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.

Downloaded from www.Manualslib.com manuals search engine 6C-20 Power Assisted Steering System:
DTC TroubleshootingStep Action Yes No 1 Was “EPS System Check” performed? Go to Step 2. Go to “EPS System
Check”.
2 DTC check
Is DTC C1153 and/or DTC C1155 indicated together? Go to applicable DTC
diag. flow.
Go to Step 3.
3 Torque sensor 5 V reference power supply circuit
voltage check
1) With ignition switch turned OFF, disconnect torque
sensor connector and check for proper terminal
connection to torque sensor connector.
2) If connections are OK, check for voltage between “E53- 6” (“RED” wire) terminal and body ground with ignition
switch ON.
Is it approx. 5 V? Go to Step 4. Go to Step 5.
4 Torque sensor 5 V reference power supply circuit check
1) With ignition switch turned OFF, connect torque sensor
connector.
2) Check for P/S control module connector (“E52”) for proper connection.
3) Turn ignition switch ON.
4) Check for voltage between “Torque sensor 5 V reference power supply circuit” terminal and body ground with
connector (“E52”) connected to the P/S control module.
Is it about 5 V? Substitute a known-
good P/S control
module and recheck.
Replace steering gear
case.
5 Torque sensor 5 V reference power supply circuit check
1) With ignition switch turned OFF, disconnect P/S control
module connector.
2) Check that “Torque sensor 5 V reference power supply circuit” is as following.
• Insulation resistance of “Torque sensor 5 V reference power supply circuit” wire is infinity between its
terminal and other terminal at torque sensor
connector.
• Wiring resistance of “Torque sensor 5 V reference power supply circuit” is less than 1 Ω.
• Insulation resistance of “Torque sensor 5 V reference power supply circuit” between its circuit and vehicle
body ground is infinity.
Is circuit in good condition? Replace P/S control
module.
Repair or replace
defective circuit.
20
E52
I4RS0A630013-02

Downloaded from www.Manualslib.com manuals search engine 6C-30 Power Assisted Steering System:
DTC C1141 / C1142 / C1143 / C1145: P/S Motor Circuit FailureS7RS0B6304019
DTC C1141: P/S Motor Circuit Voltage
DTC C1142: P/S Motor Circuit Range / Performance
DTC C1143: P/S Motor Circuit Current Too High
DTC C1145: P/S Motor Circuit Current Too Low
Wiring Diagram
MBLK
REDE51-1
E51-2
6
12V
5
[A ]
12 3
4 5 67
89
11
10
12 13
141516
17 18 19 20 8
8
12
[B ][C ]
12
LT GRN
/BLKE52-1 E49-1
GRNGRNWHTBLK
WHY
7
3
4
4
4
4
1 2
E49-2BLK
I7RS0B630010-01
[A]: Connector “E52” (viewed from harness side)
2. Ignition switch6. P/S motor
[B]: Connector “E49” (viewed from harness side) 3. Junction block assembly 7. Individual circuit fuse box No.1
[C]: Connector “E51” (viewed from harness side) 4. Fuse8. P/S motor circuit
1. Main fuse box 5. P/S control module