Eps system SUZUKI SWIFT 2008 2.G Service Service Manual

Downloaded from www.Manualslib.com manuals search engine 6C-34 Power Assisted Steering System:
P/S Control Module Power Supply and Ground Circuit CheckS7RS0B6304022
Wiring Diagram
1
[A ]
123
4 5 67
89
11
10
12 13
141516
17 18 19 20
[B ]
7
1
2
MBLK
REDE51-1
E51-2
12V
LT GRN
/BLKE52-1 E49-1
GRNGRNWHTBLK
WHY
3
3
5
6
1 2
E49-2BLK
I7RS0B630012-01
[A]: Connector “E52” (viewed from harness side)
2. Ignition switch5. “EPS” fuse
[B]: Connector “E49” (viewed from harness side) 3. Individual circuit fuse box No.1 6. “IG1 SIG” fuse
1. Main fuse box 4. Junction block assembly7. P/S control module
StepAction YesNo
1 Circuit fuse check
1) Disconnect P/S control modu le connector with ignition
switch turned OFF.
2) Check for proper connection to P/S control module connector at “E49-1”, “E49-2” and “E52-1” terminals.
3) If OK, check “P/S” fuse and “IG1 SIG” fuse for blowing.
Are “P/S” fuse and “IG1 SIG” fuse in good condition? Go to Step 2.
Replace fuse(s) and
check for short in
circuits connected to
fuse(s).
2 Power supply circuit check
1) Measure voltage between “E49-1” terminal of P/S
control module connector and body ground.
Is voltage 10 - 14 V? Go to Step 3.
“GRN” or “BLK” wire is
open circuit.
3 Ignition signal check
1) Turn ignition switch to ON position.
2) Measure voltage between “E52-1” terminal of P/S
control module connector and body ground.
Is voltage 10 - 14 V? Go to Step 4.
“LT GRN/BLK” or “GRN”
wire is open circuit.
4 P/S control module ground circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from P/S control module.
3) Measure resistance between “E49-2” terminals of P/S
control module connector and body ground.
Is resistance 1
Ω or less? Go to Step 5. “BLK” wire is open or
high resistance circuit.

Downloaded from www.Manualslib.com manuals search engine 6C-36 Power Assisted Steering System:
Voltage Check1) Remove console box.
2) Check for voltage at each terminal with co nnectors connected to the P/S control module.
NOTE
As each terminal voltage is affected by the battery voltage, confirm if the battery voltage is 11 V or
more when ignition switch is ON.
*: The voltage of this circuit may not be checked by voltmeter. If so, use oscilloscope.

Terminal Wire colorCircuit Normal voltage Remarks
E49-1 GRN Main power supply for
internal memory and P/S
motor 10 – 14 V
—
E49-2 BLK Ground for P/S control
module Below 0.3 V
—
E51-1 BLK Motor output 1 *0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.1: ”, “Reference
waveform No.2:
”and “Reference
waveform No.3: ”) • Engine idling and steering wheel at
straight position
• Voltage between “E51-1” and vehicle body ground
E51-2 RED Motor output 2 *0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.1: ”, “Reference
waveform No.2: ” and “Reference
waveform No.3: ”) • Engine idling and steering wheel at
straight position
• Voltage between “E51-2” and vehicle body ground
E52-1 LT GRN/BLK Ignition switch signal for P/S
control module 10 – 14 V Ignition switch ON
E52-2 — —— —
E52-3 — —— —
E52-4 PPL Vehicle speed signal *0 – 1 V
↑↓
8 – 14 V
(“Reference
waveform No.9”
under “Inspection of
ECM and Its Circuits in Section 1A”.) • Ignition switch ON
•Front left tire tu
rned quickly with right
tire locked
E52-5 GRY “EPS” warning light 0 V “EPS” warning light OFF
E52-6 BLU Torque sensor signal (Sub) About 0 – 2.5 V
• Steering wheel with left turn
• Out put voltage varies linearly
depending on steering force
About 2.5 V Steering wheel at free
About 2.5 – 6 V • Steering wheel with right turn
• Out put voltage varies linearly
depending on steering force
E52-7 — —— —
E52-8 GRN Main power supply for torque
sensor About 12 V• Ignition switch ON
• Check voltage between “E52-8” and
“E52-9” terminals
E52-9 BRN Ground for torque sensors Below 0.3 V —
E52-10 — —— —

Downloaded from www.Manualslib.com manuals search engine 6C-42 Power Assisted Steering System:
2) Connect tie-rod end to knuckle. Tighten tie-rod end nut (1) to spec ified torque.
3) Bend new split pin (2).
NOTE
After tightening tie-rod end nut to specified
torque, match next first slot of nut with hole
of tie-rod end for insertion of split pin
(rotation angle 60 ° max).

Tightening torque
Tie-rod end nut (a): 45 N·m (4.5 kgf-m, 32.5 lb-ft)
4) Inspect for proper toe re ferring to “Front Wheel
Alignment Inspection and Adjustment in Section 2B”.
5) After confirming proper toe, tighten tie-rod end lock nut to specified torque.
Tightening torque
Tie-rod end lock nut (a): 45 N·m (4.5 kgf-m, 32.5
lb-ft)
6) Tighten wheel nuts to specified torque and lower hoist.
Tightening torque
Wheel nut: 85 N·m (8.5 kgf-m, 61.5 lb-ft)
Tie-Rod End InspectionS7RS0B6306004
• Inspect for play in ball joint.
• Inspect for play in rack end ball joint. In either case, if found defective, replace.
Steering Shaft Joint On-Vehicle InspectionS7RS0B6306005
Check shaft joint for wear, breakage and any other
damage and replace if any defect exists.
Steering Gear Case Assembly Removal and
Installation
S7RS0B6306006
Removal
CAUTION!
Be sure to set front wheels (tires) in straight
direction and remove ignition key from key
cylinder before performing the following
steps; otherwise, contact coil of air bag
system may get damaged.

1) Remove front suspension frame with steering gear case assembly referrin g to “Front Suspension
Frame, Stabilizer Bar and/ or Bushings Removal and
Installation in Section 2B”.
2) Remove steering gear case mounting No.3 bolts (4), No.1 bolts (1), No.2 bolts (2) and gear case bracket,
then remove gear case (3) from front suspension
frame (5).
2 1,(a)
I7RS0A630017-01
I3RM0A630030-01
I4RS0A630043-01
I4RS0B630012-01
25
3
14
I6RS0C630018-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-31
4) Install magnet clutch lead wire clamp.
5) Install magnet clutch pulley (1).
6) Install new circlip (2) directing chamfer side (3) upward.
Special tool
(B): 09900–06107
7) Tighten armature plate bolt to specified torque. Tightening torque
Armature plate bolt (a): 15 N·m (1.5 kgf-m, 11.0
lb-ft)
Special tool
(A): 09991–06310
8) Adjust clearance between magnet clutch plate (1) and magnet clutch pulley by putting shim(s) on
compressor shaft. To measure the clearance,
perform the following steps.
a) Put compressor in a vise (2).
b) Set dial gauge (3) on magnet clutch plate, and then adjust its pointer at 0.
c) Connect battery positive terminal (+) to magnet clutch coil lead wire.
d) Connect battery negative terminal (–) to compressor body assemb ly. (At this point,
magnet clutch plate and magnet clutch pulley are
kept in contact.) e) Disconnect battery negative terminal (–) to
compressor body assembly. (At this point,
magnet clutch plate and magnet clutch pulley are
not in contact.)
f) Read stroke of magnet clutch plate from dial gauge by performing step d) and e) repeatedly.
(Stroke of magnet clutch plate is clearance
between magnet clutch plate and magnet clutch
pulley.)
Standard clearance between magnet clutch plate
and magnet clutch plate
0.3 – 0.5 mm (0.012 – 0.020 in.)
Relief Valve InspectionS7RS0B7216028
By using special tool, chec k if there is refrigerant
leakage. If there is refrigerant leakage, replace the relief
valve.
Special tool
(A): 09990–86012
1
32 (B)
I4RS0A720044-01
(a)
(A)
I4RS0A720045-01
21
3
I4RS0A720046-01
(A)
I5RS0C721014-01

Downloaded from www.Manualslib.com manuals search engine 8B-120 Air Bag System:
13) Separate two banana plugs (1) on deployment harness.
14) Connect deployment harness to 12 volts vehicle battery (2). This will immedi ately deploy or activate
air bag (inflator) module or seat belt pretensioner.
15) Disconnect deployment harness from 12 volts vehicle battery (2) and short two deployment
harness leads together by fully seating one banana
plug into the other.
16) In the unlikely event that air bag (inflator) module or seat belt pretensioner did not deploy / activate after
following these procedur es, proceed immediately
with Step 22) through 25). If air bag (inflator) module
or seat belt pretensioner did deploy or activate,
proceed with Steps 18) through 21).
17) Put on pair of shop gloves to protect your hands from possible irritation and heat when handling deployed
air bag (inflator) module or activated seat belt
pretensioner.
18) 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.
19) Check adapter cable as follows. • For air bag (inflator) moduleBe sure to check air bag (inflator) module adapter
cable (special tool) for damage after deployment
and replace it with new adapter cable (special
tool), if it is damaged.
• For seat belt pretensioner Be sure to check seat belt pretensioner adapter
cable (special tool) for damage after seat belt
pretensioner is activated. Replace it with spare
connector (special tool) or new adapter, if
necessary. 20) Dispose of deployed air bag (inflator) module (1) or
activated seat belt preten sioner (2) through normal
refuse channels after it has cooled for at least 30
minutes and tightly seal air bag (inflator) module (1)
or seat belt pretensioner (2) in strong vinyl bag.
Refer to “Deployed Air B ag (Inflator) Module and
Activated Seat Belt Pretensioner Disposal” for
details.
21) Wash your hands with mild soap and water afterward.
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.

22) Ensure that deployment harness has been disconnected from 12 volts vehicle battery and that
its two banana plugs have been shorted together by
fully seating one banana plug into the other.
23) Disconnect deployment harness and adapter cable from air bag (inflator) module or seat belt
pretensioner.
24) Temporarily store undeployed air bag (inflator) module referring to “Precautions on Service and
Diagnosis of Air Bag System” for details.
25) Contact your local distributor for further assistance.
I2RH01820069-01I3JA01820116-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-123
8) Route deployment harness (1) out of vehicle.
9) Check that inside of vehicle and area surrounding vehicle are clear of all people and loose or
flammable objects.
10) Stretch deployment harness (1) to its full length 10 m (33 ft).
11) Place 12 volts vehicle battery (2) near shorted end of deployment harness (1).
12) Completely cover windshield area and front door window openings with drop cloth, a blanket or any
similar item. This reduces possibility of injury due to
possible fragmentation of vehicle’s glass or interior.
13) Notify all people in immediate area that you intend to deploy air bag (inflator) module or activate seat belt
pretensioners.
NOTE
• When air bag (inflator) module deploys or seat belt pretensioners activate, rapid gas
expansion will create substantial report.
Wear suitable ear protection. Notify all
people in immediate area that you intend
to deploy air bag (inflator) module or to
activate seat belt pretensioner and suitable
ear protection should be worn.
• After air bag (inflator) module has been deployed, surface of air bag may contain
powdery residue. This powder consists
primarily of cornstarch (used to lubricate
air bag (inflator) module as it inflates) and
by-products of chemical reaction.

WARNING!
• Do not place deployed air bag (inflator) module and activated seat belt
pretensioners near any flammable objects.
• Do not apply water, oil, etc. to deployed air bag (inflator) module and activated seat
belt pretensioners.
• Wait for about 30 minutes before touching any metal surface of air bag (inflater)
module or seat belt pretensioner modules.
Disregarding these precautions may cause
fire or personal injury.
Failure to follow procedures may result in fire
or personal injury.

14) Separate two banana plugs (1) on deployment harness (2).
15) Connect deployment harness (2) to 12 volts vehicle battery (3). This will immedi ately deploy or activate
air bag (inflator) module or seat belt pretensioners.
16) Disconnect deployment harness (2) from 12 volts vehicle battery (3) and short two deployment
harness leads together by fully seating one banana
plug into the other.
17) Repeat Steps 3) through 16) to deploy / activate air bag (inflator) modules and seat belt pretensioners
which has not been deployed / activated, if any.
18) In the unlikely event that air bag (inflator) module and seat belt pretensioners after following these
procedures, proceed immediately with Step 24)
through 26). If air bag (inflator) module and seat belt
pretensioners did deploy / activate, proceed with
Steps 19) through 23).
19) Carefully remove drop cloth from vehicle and clean off any fragments or discard it entirely.
20) Put on pair of shop gloves to protect your hands from
possible irritation and heat when handling deployed
air bag (inflator) module and activated seat belt
pretensioners.
10 m (33 ft) 1
2
3
I2RH01820073-01
1
3 2
I2RH01820074-01

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 Wiring Systems: 9A-6
3) Terminals in one connector (Broken line) (B15)/Terminals in different connectors (B14, B16)
4) Joint connector (J/C)• The joint connector (J/C) connects several different wires with the same wire color at one place instead of
connecting them by welding or caulking one by one. It is not an ordinary connector but a part of the continuous
wire in the harness.
5) Junction block (J/B)
B15 B15
B14 B1657B14 B1657
I5RW0A910995-03
BLKBLK
A
A
A B
B
RED/YEL
WeldORN
WHT/BLK
J/C
Weld splice
BLKBLK
RED/YEL
RED/YEL
WHT/BLK
WHT/BLK
WHT/BLKWHT/BLKWHT/BLKWHT/BLKC
CCCCCWeld
splice
(in Connector list)
J/C
ORNORNORNORNORN
ORN
Weld
splice
Example
I5RW0A910989-02
IMMOBI IG IG1IG Coil, etc E39 E41E40
BCM G34
G33
G32 K01 L04 L05 L06
IG Coil
IG1
15A
MTR10A
A/B15A
2
65
13
J/B Connector No. / Terminal No.
BCM ;IG1
MTR Power, etc
A/B CONTK-LINE K-LINE
A/B SIGNAL
A/B SIGNAL
A/B SIG
A/B SIG
IG Sig 10AEPS ATMTA
4
6
1
3
24
8
11
9
12
9
11
23
25
30
29
Example
J/B
J/B
ORN
GRNBLU
J/B
J/B inner circuit
BLK/WHT
I5RW0A910990-03

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-34
Individual Circuit Fuse Box No. 1S7RS0B910D005
456789101112
131415161718192021
USE THE DESINGNATED FUSES
AND RELAYS ONLY.
Relay #1
"A-4"
E28
Relay #2
"A-4"
E29
Relay #3
"A-4"
E30
"A-5"
E35
RelayRelay
"D-3"
E34
Compressor
Relay"E-1"
E36
A/T relay
"A-6"
E33
Main relay
"A-5"
E32
Starting motor relay
"A-1"
E31
Throttle actuatorcontrol relay
"A-5"
E56
IF EQPDM16A engineI7RS0B910939-01
No. Fuse Description on the cover Protected circuit
30 A HTR FAN Blower motor relay
15 A FIMain relay
10 A A/C CPRSR A/C compressor relay
15 A AT ETM A/T relay
15 A STOP LAMP Brake light switch
30 A ABS MOT ABS control module
ESP
® control module
30 A ST MOT Starting motor relay
50 A MTA BLANK
50 A EPS Power steering control module
30 A IG ACC IG switch
30 A RDTR FAN Radiator fan relay #1
Radiator fan relay #2
BLANK BLANK BLANK
30 A ABS SOL ABS control module
ESP
® control module
BLANK BLANK BLANK 15 A THR MOT Throttle actuator control relay
15 A FR FOG Front fog light relay
15 A H/L L Headlight (L)
15 A H/L R Headlight (R)

Downloaded from www.Manualslib.com manuals search engine 9A-39 Wiring Systems:
1IG2FL2
6
Lamp FL (FL BOX)
1A/B CONT4A/B SIG
3K-LINE2A/B SIGNAL
9A/B SIGNAL8K-LINE
2311BCM ;IG1
22D/UL-IN21D/L-IN D/SL-IN
18SECURITY IN6Serial OUT
14TAIL BCM WNG, etc12ANSWER BACK
17RR DEF CONTROL1D/L (+B)
2BCM15DEICER CONTROL
10ACC (BCM)7DOME LP CONT
20GND (POWER)16R-WIP (CONT)
3SIGNAL GND (BCM)
7IG
1LP-L5LP-R
8+B6SW-L
3GND4SW-R
2HAZ
DOME LP POWER5DOME LP DOOR4*3GND (Roof)6HTR4Starter SW1IG 25ACC SW3IG2SW2IG 1
18107G33415G347G3419G341G3412G339G3311G343G342G348G34166G336G345G33810511G3313G344G341G3320G342G339G343G3312G3414G34
10E395E4112E419E4114E411E418E412E4111E413E416E395E3916E417E414E392E399E393E397E3910E41
DEF LP
RR FOG SW DEICER LP
*TAIL SW (Upper)
TAIL SW (HAZ,ASH,ILL) TURN-L
TURN-R
METER (L)
METER (R)
HAZARD SW HORN SW
Serial INF DISP
A/C PANEL
*MTR Power,etc
IMMOBI IG
A/C PANEL
*
*
RADIO, CLOCK
A/B SIGCIGAR
*F-WIP*
*GND (IP)
SIGNAL GND (IP)
*
*
*
IG Coil, etc EPS AT
ABS CONT
BACK (SHIFT) STOP SW
ABS CONT EPI
BUL IN
HORN
FR TURN (R)
FR TURN (L) POSI LP
EPI
DEICER
*F-Washer
F.WIP
HTR Fuse (30A)
ST RLY COIL
4L0515L0516L055L059L05212L0513L0614L067L0615L0614L0511L056L065L068L057L056L0518L053L051L0510L059L0610L061L063L062L068L0611L064L06
SIGNAL GND (FL)
SEAT HEATER
P/W
R-WIP (+) R-WIP (-)*
ACC SOCKET
R/C MIR (ACC)
*
*
*
LUGGAGE LAMPMTA SHIFT LEVER SW
*
*
RR DEF
HTR MIR (L)
HTR MIR (R)
P/W DR
TAIL LP, LICENSE
R-TURN (L)
RR-TURN (R)
D/ULD/L
D-SL
BUL-L
STOP LP
MTA
*
*
IG COIL 15AMETER 10A A/BAG 15A
IG1 SIG 10A ABS 10A
BACK 10A
TAIL 10AD/L 20A
P/WT 20A
RR DEF 20A
DEICER/RR FOG 15A
MTA/HID R 10A
ACC 1 15A
ACC 2 15A
WIPER 15A P/W 30A
*Spare-1
SEAT HTR 15A IG2 SIG 10AST SIG 10A
HAZ-HORN 15A
DIESEL/HID L 10A *Spare-2 RR DEF RLY
DEICER RLY HORN RLY
P-WIP RLY
BLOWER MOTOR RLY
G34 G34
G33
G34
G33
G34 G33
L05
RADIO 15A
To instrument panel harness
(G32) To roof harness
(K01)
To instrument panel
harness
(G33 , G34 )
To main harness
(E39 , E41) To floor harness (L05 , L06 ) To main
harness
(E40)
BCM
To flasher
relay To floor
harness
(L04)
* : Not used
I7RS0B910949-01