hydraulic SUZUKI SWIFT 2006 2.G Service User Guide

Downloaded from www.Manualslib.com manuals search engine 4A-4 Brake Control System and Diagnosis:
Rear Brake Hose / Pipe ConstructionS7RS0B4101003
Diagnostic Information and Procedures
Brakes Diagnosis NoteS7RS0B4104001
Road Testing Brakes
Brakes should be tested on dry, clean, smooth and
reasonably level roadway which is not crowned. Road
test brakes by making brake applications with both light
and heavy pedal forces at vari ous speeds to determine if
the vehicle stops evenly and effectively. Also drive
vehicle to see if it leads to one side or the other without
brake application. If it does, check the tire pressure, front
wheel alignment and front suspension attachments for
looseness. See diagnosis table for other causes. Brake Fluid Leaks
Check the master cylinder fl
uid levels. While a slight
drop in reservoir level does result from normal lining
wear, an abnormally low leve l indicates a leak in the
system. In such a case, chec k the entire brake system
for leakage. If even a slight ev idence of leakage is noted,
the cause should be corrected or defective parts should
be replaced.
Substandard or Contaminated Brake Fluid
Improper brake fluid, mineral oil or water in the fluid may
cause the brake fluid to boil or the rubber components in
the hydraulic system to deteriorate.
[A]: ABS model 6. Master cylinder13. ESP® hydraulic unit
[B]: ESP ® model 7. From hydraulic unit to 4-way joint right : 11 N⋅m (11.0 kgf-m, 8.0 lb-ft)
1. From master cylinder primary to hydraulic unit 8. From hydraulic unit to 4-way joint left: 15 N⋅m (1.5 kgf-m, 11.0 lb-ft)
2. From master cylinder secondary to hydraulic unit 9. 4-way joint: 16 N⋅m (1.6 kgf-m, 11.5 lb-ft)
3. From hydraulic unit to right front brake 10.4-way joint to left rear brake hose : 19 N⋅m (1.9 kgf-m, 14.0 lb-ft)
4. From hydraulic unit to left front brake 11. 4-way joint to right rear brake hose
5. ABS hydraulic unit 12. Master cylinder fixing nut
I6RS0C410003-01
A: View A4. Right rear brake hose8. Flexible hose joint bolt
1. To left rear brake hose 5. Left rear brake hose to left brake9. Caliper
2. To right rear brake hose 6. Right rear brake hose to right brake: 16 N⋅m (1.6 kgf-m, 12.0 lb-ft)
3. Left rear brake hose 7. Brake flexible hose: 23 N⋅m (2.3 kgf-m, 17.0 lb-ft)

Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-5
If deterioration of rubber is evident, disassemble all
hydraulic parts and wash with alcohol. Dry these parts
with compressed air before assembly to keep alcohol out
of the system. Replace all rubber parts in the system,
including hoses. Also, when working on the brake
mechanisms, check for fluid on the linings.
If excessive fluid is found, replace the pads. If master cylinder piston seals
are satisfactory, check for
leakage or excessive heat co nditions. If leakage is not
found, drain fluid, flush with brake fluid, refill and bleed
system.
The system must be flushed if there is any doubt as to
the grade of fluid in the system or if fluid has been used
which contained parts that have been subjected to
contaminated fluid.
Brakes Symptom DiagnosisS7RS0B4104002
Condition Possible cause Correction / Reference Item
Not enough braking force Brake oil leakage from brake lines Locate leaking point and repair.
Brake disc or brake pad stained with oil Clean or replace.
Overheated brakes Determine cause and repair.
Badly worn brake pad Replace.
Malfunctioning caliper assembly Repair or replace.
Malfunctioning brake booster Check system and replace assembly.
Malfunctioning brake master cylinder Check system and replace as necessary.
Air in system Bleed system.
Malfunctioning ABS (ESP ®). Check system and replace as necessary.
Brake pull (Brakes not
working in unison) Brake pad and disc are wet with water or
stained with oil in some brakes Clean or replace.
Disc is out of round in some brakes Replace.
Tires are inflated unequally Inflate equally.
Disturbed front wheel alignment Adjust as prescribed.
Unmatched tires on same axle Tires with approximately the same amount of
tread should be used on the same axle.
Restricted brake pipes or hoses Check for soft hoses and damaged lines.
Replace with new hoses and new double-
walled steel brake tubing.
Malfunctioning caliper assembly Caliper should slide.
Check for stuck or sluggish pistons and proper
lubrication of caliper slide pin.
Loose suspension parts Check all suspension mountings.
Loose calipers Check and torque bolts to specifications.
Noise (High pitched
squeak without brake
applied) Contact wear indicator to brake disc
Replace brake pads.
Worn brake pad Replace brake pads.
Excessive pedal travel
(Pedal stroke too large) Partial brake system failure
Check brake systems and repair as necessary.
Brake fluid leaking Repair the leaking point and bleed air.
Air in system (soft / spongy pedal) Bleed system.
Brake locked Malfunctioning ABS (ESP®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
Dragging brakes (A very
light drag is present in all
brakes immediately after
pedal is released.) Master cylinder pistons not returning
correctly
Replace master cylinder.
Restricted brake pipes or hoses Check for soft hoses or damaged pipes and
replace with new hoses and/or new brake
piping.
Incorrect parking brake adjustment on
rear brakes Check and adjust to correct specifications.
Weakened or broken return springs in
rear brakes. Replace.
Sluggish parking brake cables or linkage Repair or replace.
Brake caliper piston sticking Repair as necessary.
Badly worn piston seal in caliper Replace piston seal.
Improper brake pedal free height Check brake pedal free height.

Downloaded from www.Manualslib.com manuals search engine 4A-6 Brake Control System and Diagnosis:
Pedal pulsation (Pedal
pulsates when depressed
for braking)Damaged or loose wheel bearings
Replace wheel bearings.
Distorted steering knuckle or rear wheel
spindle Replace knuckle or rear wheel spindle.
Excessive disc lateral runout Check per instructions. If not within
specifications, replace or machine disc.
Parallelism between brake pad and disc
not within specifications Check per instructions. If not within
specifications, replace or machine disc.
Brake caliper piston sticking Repair as necessary.
Braking noise Worn or distorted brake pad Replace pads.
Loose front wheel bearings Replace wheel bearings.
Distorted backing plates or loose
mounting bolts Replace or retighten securing bolts.
Contact wear indicator to brake disc Replace brake pad.
Brake warning light lights
after engine start Parking brake applied
Release parking brake and check that brake
warning light turns off.
Insufficient amount of brake fluid Investigate leaky point, correct it and add
brake fluid.
Brake fluid leaking Investigate leaky point, correct it and add
brake fluid.
Brake warning light circuit faulty Repair circuit.
Malfunctioning EBD system Check system referring to “EBD Warning Light
(Brake Warning Light) Comes ON Steady in
Section 4E”.
Brake warning light turns
on when brake is applied Brake fluid leaking
Investigate leaky point, correct it and add
brake fluid.
Insufficient amount of brake fluid Investigate leaky point, correct it and add
brake fluid.
Brake warning light fails
to turn on even when
parking brake is applied Brake warning light circuit faulty
Replace bulb or repair circuit.
ABS warning light or
ESP
® warning light turns
on after engine start Malfunctioning ABS (ESP
®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light or
ESP
® warning light turns
on when brake is applied Malfunctioning ABS (ESP
®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light or
ESP
® warning light does
not turn on for 2 sec. after
ignition switch has turned
ON Bulb burnt out
Replace bulb.
Malfunctioning ABS (ESP ®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light flashes New ABS hydraulic unit / control module
assembly installed. Perform “ABS Hydraulic
Unit Operation Check
in Section 4E”.
Condition Possible cause Correction / Reference Item

Downloaded from www.Manualslib.com manuals search engine 4A-8 Brake Control System and Diagnosis:
Excessive Pedal Travel InspectionS7RS0B4106003
1) Start engine.
2) Depress brake pedal a few times.
3) With brake pedal depressed with approximately 300 N (30 kg, 66 lbs) load, measure brake pedal to wall
(dash panel silencer) clearance “a”. If clearance “a”
is less than specification, the most possible cause is
air in lines. Should clearance “a” remain less than
specification even after bleeding of system, other
possible infrequent cause is booster push rod length
out of adjustment.
• Bleed brake system. Refer to “Air Bleeding of Brake System”.
Brake arm pedal to wall clearance “a”
When pedal depressed at 300 N (30 kg, 66 lbs):
over 75 mm (2.95 in.)
Brake Fluid Level InspectionS7RS0B4106004
1) Check master cylinder, reservoir and reservoir hose (if equipped) for crack, damage and brake fluid
leakage. If any faulty condition exists, correct or
replace.
2) Check that brake fluid level is between MAX and MIN marks on reservoir.
NOTE
Be sure to use particular brake fluid either as
indicated on reservoir cap of that vehicle or
recommended in owner’s manual which
comes along with that vehicle. Use of any
other fluid is strictly prohibited.
Fluid level should be between MIN and MAX
lines marked on reservoir.
When brake warning lamp lights sometimes
during driving, replenis h fluid to MAX level.
When fluid decreases quickly, inspect brake
system for leakage. Correct leaky points and
then refill to specified level.

CAUTION!
Do not use shock absorber fluid or any other
fluid which contains mineral oil. Do not use a
container which has been used for mineral oil
or a container which is wet from water.
Mineral oil will cause swelling and distortion
of rubber parts in hydraulic brake system and
water mixed into brake fluid will lower fluid
boiling point. Keep all fluid containers
capped to prevent contamination.

Stop Light Switch AdjustmentS7RS0B4106005
Adjustment should be made as follows. Pull up brake
pedal toward you and while holding it there, adjust
switch position so that clea rance between end of thread
and brake pedal is as specified. Then lock it by turning
clockwise.
Clearance between brake pedal and stop light switch
“a”: 1.2 – 2.2 mm (0.05 – 0.08 in.)
I6RS0C410005-02
I4RS0B410006-01
I4RS0A410007-01

Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-9
Air Bleeding of Brake SystemS7RS0B4106006
CAUTION!
Brake fluid is extremely damaging to paint. If
fluid should accidentally touch painted
surface, immediately wipe fluid from paint
and clean painted surface.

Bleeding operation is necessary to remove air whenever
it entered hydraulic brake system.
Hydraulic lines of brake system are based on the
diagonal split system. When a brake pipe or hose was
disconnected at the wheel, bleeding operation must be
performed at both ends of the line of the removed pipe or
hose. When any joint part of the master cylinder of other
joint part between the master cylinder and each brake
(wheel) was removed, the hydraulic brake system must
be bled at all 4 wheel brakes.
NOTE
Perform bleeding operation starting with rear
brake caliper farthest from master cylinder
and then at front caliper of the same brake
line. Do the same on the other brake line.

1) Fill master cylinder rese rvoir with brake fluid and
keep at least one-half full of fluid during bleeding
operation.
Brake fluid
: Refer to reservoir cap (1) 2) Remove bleeder plug cap. Attach a vinyl tube (1) to
bleeder plug, and insert the other end into container
(2).
3) Depress brake pedal several times, and then while holding it depressed, loosen bleeder plug about one-
third to one-half turn.
4) When fluid pressure in cy linder is almost depleted,
retighten bleeder plug.
5) Repeat this operation until there are no more air bubbles in hydraulic line.
6) When bubbles stop, depress and hold brake pedal and tighten bleeder plug referring to “Front Disc
Brake Components in Section 4B” and “Rear Disc
Brake Components in Section 4C”.
1. Right front brake caliper 3. Right rear brake caliper
2. Left front brake caliper 4. Left rear brake caliper
I6RS0C410007-01
1
I6RS0C410009-01
I2RH01410015-01
I2RH01410016-01
I2RH01410017-01

Downloaded from www.Manualslib.com manuals search engine 4A-16 Brake Control System and Diagnosis:
Booster Operation InspectionS7RS0B4106016
There are two ways to perform this inspection, with and
without a tester. Ordinarily, it is possible to roughly
determine its condition without using a tester.
NOTE
For this check, make su re that no air is in
hydraulic line.

Check Air Tightness
1) Start engine.
2) Stop engine after running for 1 to 2 minutes.
3) Depress brake pedal several times with the same load as in ordinary braking and observe pedal travel.
If pedal goes down deep the first time but its travel
decreases as it is depressed the second and more
times, air tightness is obtained.
4) If pedal travel doesn’t change, air tightness isn’t obtained.
NOTE
If defective, inspect vacuum lines and sealing
parts, and replace any faulty part. When this
has been done, repeat the entire test.

Check Operation
1) With engine stopped, depress brake pedal several times with the same load and make sure that pedal
travel doesn’t change.
2) Start engine while depressing brake pedal. If pedal travel increases a little, operation is satisfactory. But
no change in pedal travel indicates malfunction.
Check Air Tightness Under Load 1) With engine running, depress brake pedal. Then stop engine while holding brake pedal depressed.
1. 1st 2. 2nd3. 3rd
1. 1st, 2nd, 3rd
I2RH01410005-01
I2RH01410006-01
H: Hold
I2RH01410007-01
I2RH01410008-01
I2RH01410009-01

Downloaded from www.Manualslib.com manuals search engine 4E-1 ABS:
Brakes
ABS
Precautions
Precautions in Diagnosing TroublesS7RS0B4500001
To ensure that the trouble diagnosis is done accurately
and smoothly, observe the following and follow “ABS
Check”.
• Diagnostic information stored in ABS cont rol module
memory can be cleared as well as checked by using
SUZUKI scan tool. Before us ing scan tool, read its
Operator’s (Instruction) Manual carefully to have good
understanding as to what functions are available and
how to use it.
• If the vehicles was operated in any of the following ways, ABS warning light may light momentarily but
this does not indicate anything abnormal in ABS.
– The vehicle was driven with parking brake pulled.
– The vehicle was driven with brake dragging.
– The vehicle was stuck in mud, sand, etc.
– Wheel spin occurred while driving.
– Wheel(s) was rotated while the vehicle was jacked up.
• Be sure to read “Precautions for Electrical Circuit Service in Section 00” befo re inspection and observe
what is written there.
• Be sure to use the trouble diagnosis procedure as described in “ABS Check”. Failure to follow it may
result in incorrect diagnosis. (Some other diagnosis
trouble code may be stored by mistake in the memory
of ABS control module during inspection.)
• When disconnecting ABS co ntrol module connector
(1), pull down lock lever (2) of connector.
When connecting, set the connector on ABS control
module assembly and pull up the lock lever (2) until it
locks. • Communication of ECM,
BCM, ABS control module,
keyless start control module (if equipped), and
combination meter is established by CAN (Controller
Area Network).
Therefore, be sure to read “Precautions for Installing
Mobile Communication Equipment in Section 00”
before inspection and handle CAN communication
line.
Precautions in On-Vehicle ServiceS7RS0B4500002
When connector is connected to ABS control module
assembly, do not disconnect connectors of sensors with
ignition switch ON. Otherwise, DTC will be set in ABS
control module.
Precautions in Hydraulic Unit Operation CheckS7RS0B4500003
ABS hydraulic unit / control module assembly function is
checked by correct wheel lock / release condition when
brake pressure is pressurized / depressurized using
SUZUKI scan tool. The hydraulic unit operation check
referring to “ABS Hydraulic Unit Operation Check”
should be performed to confirm the correct brake pipe
connection in the following cases.
• ABS hydraulic unit / cont rol module assembly was
replaced.
• Brake pipe and/or hose ware replaced.
[A]: Disconnect C: Pull down to disconnect
[B]: Connect D: Pull up to connect
21
C D
[A]
[B]
I4RH01450001-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-2
General Description
ABS DescriptionS7RS0B4501001
The ABS (Antilock Brake System) controls the fluid
pressure applied to the wheel cylinder of each brake
from the master cylinder so that each wheel is not locked
even when hard braking is applied.
This ABS has also the following function.
While braking is applied, but before ABS control
becomes effective, braking force is distributed between
the front and rear so as to prevent the rear wheels from
being locked too early for better stability of the vehicle.
The main component parts of this ABS include the
following parts in addition to those of the conventional
brake system.
• Wheel speed sensor which senses revolution speed of each wheel and outputs its signal.
• ABS warning light which light s to inform abnormality
when system fails to operate properly.
• ABS hydraulic unit / cont rol module assembly is
incorporated ABS co ntrol module, ABS hydraulic unit
(actuator assembly), solenoid valve power supply
driver (transistor), solenoid valve driver (transistor),
pump motor driver (transistor).
– ABS control module which sends operation signal to ABS hydraulic unit to control fluid pressure
applied to each wheel cylinder based on signal
from each wheel speed sensor so as to prevent
wheel from locking.
– ABS hydraulic unit which operates according to signal from ABS control module to control fluid
pressure applied to wheel cylinder of each 4
wheels.
– Solenoid valve power supp ly driver (transistor)
which supplies power to solenoid valve in ABS
hydraulic unit.
– Solenoid valve driver (transistor) which controls each solenoid valves in ABS hydraulic unit.
– Pump motor driver (transistor) which supplies power to pump motor in ABS hydraulic unit.
This ABS is equipped with Electronic Brake force
Distribution (EBD) system that controls a fluid pressure
of rear wheels to best condition, which is the same
function as that of proportion ing valve, by the signal from
wheel sensor independently of change of load due to
load capacity and so on. An d if the EBD system fails to
operate properly, the brake warning light lights to inform
abnormality.
ABS Hydraulic Unit / Control Module Assembly
Description
S7RS0B4501002
ABS control module is a component of ABS hydraulic
unit / control module asse mbly and has the following
functions.
Self-Diagnosis Function
ABS control module diagnose s conditions of the system
component parts (whether or not there is any
abnormality) all the time and indicates the results
(warning of abnormality occurrence and DTC) through
the ABS warning light as described.
• When ignition switch is turned ON, ABS warning light lights for 2 seconds to check its circuit.
• When no abnormality has been detected (the system is in good condition), ABS warning light turns OFF
after 2 seconds.
• When an abnormality in th e system is detected, ABS
warning light lights and the area where that
abnormality lies is stored in the memory of EEPROM
in ABS control module.
1
I4RS0A450001-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-4
Schematic and Routing Diagram
ABS SchematicS7RS0B4502001
INPUTOUTPUT
ABS control moduleWheel speed sensor (LF)
Wheel speed sensor (LR)
Wheel speed sensor (RF)Battery Voltage
Ignition Voltage
Pump motor
driver (transistor)
Solenoid valve power
supply driver (transistor)
Solenoid valve
driver (transistor) Hydraulic unit
Pump motor
LF inlet solenoid valve
LF outlet solenoid valve
LR inlet solenoid valve
LR outlet solenoid valve
RF inlet solenoid valve
RF outlet solenoid valve
RR inlet solenoid valve
RR outlet solenoid valve
Data link connector
ABS hydraulic unit/control
module assembly
Wheel speed sensor (RR)
3 7
2
645
8 12
14
21
15
16
1
13
18
17
19
19
11
10
9
CAN driverStop lamp switch
Engine torque
ECM
ABS warning light
EBD warning light
Combination meter
Torque request
ECMWheel speed signal (LF)
Wheel speed signal (LR)
Wheel speed signal (RF)
Wheel speed signal (RR)
ABS active
I6RS0C450003-03

Downloaded from www.Manualslib.com manuals search engine 4E-5 ABS:
ABS Wiring Circuit DiagramS7RS0B4502002
1. ABS hydraulic unit / control module assembly 8.
Pump motor 15. Wheel speed sensor (Right-front)
2. ABS control module 9. Stop lamp switch 16. Wheel speed sensor (Left-front)
3. ABS hydraulic unit 10. ABS warning light 17. Wheel speed sensor (Right-rear)
4. Solenoid valve power supply driver (transistor) 11. EBD warnin g light (Brake warning light) 18. Wheel speed sensor (Left-rear)
5. Solenoid valve driver (transistor) 12. Lamp driver module 19. Battery
6. Pump motor driver (transistor) 13. 4 way joint 20. Ignition switch
7. Solenoid valve 14. Data link connector 21. ECM
[A]
14
1516171819202122232425 1
23456789101112
13
26 E03
a
WHT/BLU
BLKWHT/BLU
M
12V
9
10 11 12
13
BLKE03-14E03-1
E03-13
E03-26
YELBRN
14E03-24
LT GRN/BLKLT GRN
15
WHTWHT/BLK
16
RED
WHTBLK
WHTBLK
WHTBLK
WHTBLKRED/BLK
17
12V
PPL/WHT
18E03-5
1912V
5V
12V
23
24
VCC22
E03-25
E03-15E03-16
E03-19E03-18
E03-22E03-21
WHT/RED
WHT/RED
+BB
GRN/ORN
E03-7
WHT/BLUGRN
1
2
3
4
8
RED/BLK
E03-12
E03-6
RED
WHTE03-10E03-8
REDWHT
20 7
6
529
29
G28-8
G28-10
25
29
E23-3E23-18
GRN/WHT
21
PPL
12V
E23-20
12V
12V
12V
12V
REDWHTE46-1
E46-2
BLK
RED/BLK
RED/BLK
RED
RED
WHT
WHT
27
28
26
29
G37-2
G37-4
REDWHT
I6RS0C450004-01
[A]: Terminal arrangement of ABS hydraulic unit / control module assembly 10. Solenoid valve power supply driver
(transistor) 21. Brake light switch
a: Upside 11. ABS pump motor driver (transistor) 22. Power control unit