abs SUZUKI SWIFT 2005 2.G Service Owners Manual

Downloaded from www.Manualslib.com manuals search engine 4E-27 ABS:
DTC U1100: Lost Communication with ECM (Reception Error)S7RS0B4504019
Wiring Diagram
Refer to “DTC U1073: Control Module Communication Bus Off”.
DTC Detecting Condition
Reception error of communication data for ECM is detected more than specified time continuously.
DTC Troubleshooting Step Action Yes No 1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 1) Check DTC for ABS.
Is DTC U1073 detected? Go to “DTC U1073:
Control Module
Communication Bus
Off”.Go to Step 3.
3 1) Check DTC for ECM. Is DTC P1674 detected? Go to “DTC P1674:
CAN Communication
(Bus Off Error) in
Section 1A”.Go to Step 4.
4 1) Check connection of connectors of all control modules communicating by means of CAN.
2) Check DTC for ABS.
Is DTC U1100 detected? Go to Step 5. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00” in related manual.
5 1) Turn ignition switch to OFF position.
2) Disconnect connectors of ABS control module and ECM
communicating by means of CAN.
3) Check CAN communication circuit between ABS control module and ECM for open, short and high resistance.
Is CAN communication circuit in good condition? Go to Step 6. Repair or replace the
CAN communication
line.
6 1) Disconnect connectors of all control modules communicating by means of CAN.
2) Check CAN communication circuit between control modules other than Step 5 for open, short and high
resistance.
Is each CAn communication circuit in good condition? Go to Step 7. Repair or replace the
CAN communication
line.
7 1) Turn ignition switch to OFF position. 2) Connect connector of disconnected control modules communicating by means of CAN.
3) Disconnect connector from any one of control modules other than BCM and ABS control module.
4) Recheck ABS contro l module for DTC
IS DTC U1100 detected? Disconnected
connectors of control
modules other than the
one whose connector is
disconnected in Step 3)
one by one and check
that DTC U1100 is
detected by ABS control
module each time
connector is
disconnected.
When DTC U1100 is not
detected by ABS
module while checking
in this way, go to
description under “NO”
below. If DTC U1100 is
detected by ABS control
module, go to Step 8.Check power and
ground circuit of control
module disconnected in
Step 3) circuit is OK,
substitute a know-good
control module
disconnected in Step 3)
and recheck.

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-28
Repair Instructions
ABS Hydraulic Unit Operation CheckS7RS0B4506001
1) Check that basic brake system other than ABS is in good condition.
2) Check that battery voltage is 11 V or higher.
3) Lift up vehicle.
4) Set transmission to neutral and release parking brake.
5) Turn each wheel gradually by hand to check if brake dragging occurs. If it does, correct.
6) Connect SUZUKI scan tool to data link connector (DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool 7) Turn ignition switch to ON position and select menu
to “HYDRAULIC CONTROL TEST” under
“miscellaneous test” (“MISC. TEST”) mode of
SUZUKI scan tool.
8) Perform the following checks with help of another person.
Brake pedal (1) should be depressed and then select
testing wheel by SUZUKI scan tool and the wheel (2)
should be turned by another person’s hand. At this
time, check that:
• Operation sound of solenoid is heard and the wheel turns only about 0.5 sec. (Brake force is
depressurized).
• Operation sound of pump motor is heard and pulsation is felt at brake pedal.
9) Check for all 4-wheels co ndition respectively. If a
faulty condition is found, replace hydraulic unit /
control module assembly.
10) After completing the check, turn ignition switch to OFF position and disconnect SUZUKI scan tool from
DLC.
8 1) Substitute a know-good BCM and recheck ABS control
module for DTC.
IS DTC U1100 detected? Substitute a know-good
ABS control module and
recheck.
End.
Step Action Yes No
1 (A)I4RS0A450020-01
I4RH01450021-01

Downloaded from www.Manualslib.com manuals search engine 4E-29 ABS:
ABS Hydraulic Unit / Control Module Assembly ComponentsS7RS0B4506002
CAUTION!
Never disassemble ABS hydraulic unit / control module assembly, loosen blind plug or remove motor.
Performing any of these prohibited services will affect original performance of ABS hydraulic unit /
control module assembly.

ABS Hydraulic Unit / Control Module Assembly
On-Vehicle Inspection
S7RS0B4506003
CAUTION!
Never disassemble ABS hydraulic unit /
control module assembly, loosen blind plug
or remove motor. Pe rforming any of these
prohibited services wi ll affect original
performance of ABS hydraulic unit / control
module assembly.

Check hydraulic unit for fluid leakage.
If any, repair or replace.
ABS Hydraulic Unit / Control Module Assembly
Removal and Installation
S7RS0B4506004
CAUTION!
Never disassemble ABS hydraulic unit /
control module assembly, loosen blind plug
or remove motor. Pe rforming any of these
prohibited services wi ll affect original
performance of ABS hydraulic unit / control
module assembly.

Removal
1) Disconnect negative cable from battery.
2) Disconnect ABS hydraulic unit / control module assembly connector (1) by pull down the lock (2).
(a)
(a)
(b)
(b)
(c)(c)
1
2
3
I4RS0A450021-01
1. ABS hydraulic unit / control module assembly
3. Connector: 9 N⋅m (0.9 kgf-m, 6.5 lb-ft)
2. Bracket : 16 N⋅m (1.6 kgf-m, 11.5 lb-ft) : 25 N⋅m (2.5 kgf-m, 18.0 lb-ft)
[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-30
3) Using special tool, loosen flare nuts (1) and disconnect brake pipes (2) from ABS hydraulic unit /
control module assembly (3).
Special tool
(A): 09950–78220
NOTE
Put bleeder plug cap or the like onto pipe to
prevent fluid from spilli ng. Do not allow brake
fluid to get on painted surfaces.

4) Remove ABS hydraulic unit / control module with
bracket from vehicle by removing three bracket bolts.
5) Remove bolt and pull out ABS hydraulic unit / control module assembly (1) from bracket (3) using flat end
rod or the like (2).
CAUTION!
• Do not give an impact to hydraulic unit.
• Use care not to allow dust to enter hydraulic unit.
• Do not place hydraulic unit on its side or upside down. Handling it in inappropriate
way will affect its original performance.

Installation
1) Install hydraulic unit / control module assembly by reversing removal procedure.
Tightening torque
Brake pipe flare nut (a): 16 N·m (1.6 kgf-m, 11.5 lb-ft)
ABS hydraulic unit / control module assembly bolt (b): 9 N·m (0.9 kgf-m, 6.5 lb-ft)
ABS hydraulic unit / control module assembly bracket bolt (c): 25 N·m (2.5 kgf-m, 18.0 lb-ft)
3
2
1
(A)
I4RS0A450022-01
1
3
2
I4RS0A450023-01
(a) (a)(c)
(c)
(b)
(b)
I4RS0A450024-01

Downloaded from www.Manualslib.com manuals search engine 4E-31 ABS:
2) Bleed air from brake system referring to “Air Bleeding of Brake System in Section 4A”.
3) Check each installed part for fluid leakage and perform “ABS Hydraulic Un it Operation Check”.
NOTE
For new ABS hydraulic unit / control module
assembly, if “ABS Hydraulic Unit Operation
Check” has not been performed, ABS
warning light may flash when ignition switch
is turned ON position.
Accordingly preform “ABS Hydraulic Unit
Operation Check” to stop flashing of ABS
warning light.

Front / Rear Wheel Speed Sensor On-Vehicle
Inspection
S7RS0B4506005
Output Voltage Inspection
1) Disconnect negative cable from battery.
2) Hoist vehicle a little.
3) Disconnect wheel speed sensor connector.
4) Disconnect wheel speed grommet from vehicle body.
5) Set up measuring devices as shown in figure, the resistance to 115 Ω and the power supply voltage to
12 V.
CAUTION!
Incorrect voltage and/or wrong connection
cause damage to wheel speed sensor.

6) Measure voltage at resistance without wheel rotation.
If voltage is out of specification, check sensor,
mating encoder and their installation conditions.
Voltage at the resistance (115
Ω) without wheel
rotation
680 to 960 mV
7) Measure voltage at resistance with wheel rotation and confirm voltage alternately changes between
high and low voltages.
If voltage does not change with wheel rotation, check
sensor, mating encoder and their installation
conditions.
Voltage at the resistance (115
Ω) with wheel
rotation
High voltage “a”: 1360 to 1930 mV
Low voltage “b”: 680 to 960 mV
Reference
When using oscilloscope for this check, check if peak-to-
peak voltage and waveform meet specification.
Peak-to-peak Voltage at the resistance (115
Ω) with
wheel rotation
High voltage “a”: 1360 to 1930 mV
Low voltage “b”: 680 to 960 mV
[A]: Front wheel speed sensor 3. “WHT” wire terminal
[B]: Rear wheel speed sensor 4. “BLK” wire terminal
1. Wheel speed sensor connector 5. Power supply (12 V)
2. Resistance (115 Ω )
V
2
5
41
3
43
1
[A]
[B]
I6RS0B460031-02
[A]: Voltage [B]: Time
I5JB0A450027-01
I5JB0A450028-02

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-32
Front Wheel Speed Sensor Removal and
Installation
S7RS0B4506006
Removal1) Disconnect negative cable from battery.
2) Disconnect front wheel speed sensor coupler (1).
3) Hoist vehicle and remove wheel.
4) Remove harness clamp, clamp bolt (2) and grommet (3).
5) Remove front wheel speed sensor (4) from knuckle.
CAUTION!
• Do not pull wire ha rness when removing
front wheel speed sensor.
• Do not cause damage to surface of front wheel speed sensor and do not allow dust,
etc. to enter its installation hole.

Installation
1) Check that no foreign material is attached to sensor (1) and sensor ring (2).
2) Install it by reversing removal procedure.
Tightening torque
Front wheel speed sensor bolt (a): 25 N·m (2.5
kgf-m, 18.0 lb-ft)
Front wheel speed sensor harness clamp bolt
(b): 11 N·m (1.1 kgf-m, 8.0 lb-ft)
CAUTION!
Do not pull or twist wire harness more than
necessary when installing front wheel speed
sensor.

3) Check that there is no clearance between sensor
and knuckle.
Front Wheel Speed Sensor InspectionS7RS0B4506007
• Check sensor for damage.
If any malcondition is found, replace.
3
1
2
4
I6RS0C450017-01[A]: OK [B]: NG
[A][B]
11
(a)
(b)
1
2
I6RS0C450018-01
I5JB0A450031-01

Downloaded from www.Manualslib.com manuals search engine 4E-33 ABS:
Rear Wheel Speed Sensor Removal and
Installation
S7RS0B4506008
Removal1) Disconnect negative (–) cable from battery.
2) Remove quarter inner trim to brake referring to “Floor Carpet Removal a nd Installation in Section
9H”.
3) Turn over floor carpet (2) and disconnect connector (1) of wheel speed sensor.
4) Hoist vehicle and remove wheel.
5) Remove harness clamp (1) and clamp bolts (2).
6) Remove rear wheel speed sensor (3) from knuckle.
CAUTION!
• Do not pull wire harness when removing rear wheel speed sensor.
• Do not cause damage to surface of rear wheel speed sensor and do not allow dust,
etc. enter its installation hole.

Installation
Reverse removal procedure for installation noting the
following.
• Check that no foreign material is attached to sensor (1) and mating encoder (2).
• Be sure to install wheel speed sensor (1) and its bolt at the correct position as shown in figure.
Tighten sensor bolt and harness clamp bolts to
specified torque.
Tightening torque
Rear wheel speed sensor bolt (a): 11 N·m (1.1 kgf-
m, 8.0 lb-ft)
Rear wheel speed sensor harness clamp bolt (a):
11 N·m (1.1 kgf-m, 8.0 lb-ft)
CAUTION!
Do not pull or twist wire harness more than
necessary when installing rear wheel speed
sensor.

• Check that there is no clearance between sensor and brake back plate.
2
2
1
I6RS0B460035-02
3
2
1
I6RS0B460036-02
[A]: OK [B]: NG
1
(b)
[A][B]
11
(a)
2
I6RS0B460037-02

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-34
Rear Wheel Speed Sensor InspectionS7RS0B4506009
Refer to “Front Wheel Speed Sensor Inspection” since
rear wheel speed sensor is the same as front wheel
speed sensor.
Front Wheel Encoder On-Vehicle InspectionS7RS0B4506010
Before inspect front wheel encoder, remove front drive
shaft or front wheel spindle referring to “Front Drive Shaft
Assembly Removal and Installation in Section 3A”.
• Check encoder (1) for being crack, damaged or deformed.
• Turn wheel and check if encoder rotation is free from eccentricity and looseness.
• Check that no foreign material is attached. If any faulty is found, cl ean encoder or replace wheel
bearing. Refer to “Front Wheel Hub, Steering Knuckle
and Wheel Bearing Removal and Installation in
Section 2B”.
Front wheel Encoder Removal and InstallationS7RS0B4506011
CAUTION!
Front wheel encoder is included in front
wheel bearing. If front wheel encoder needs
to replaced, replace it as a front wheel
bearing.

For removal and installation of front wheel bearing,
referring to “Front Wheel Hub, Steering Knuckle and
Wheel Bearing Removal and Installation in Section 2B”.
Rear Wheel Encoder On-Vehicle InspectionS7RS0B4506012
Before inspect rear wheel encoder, hoist vehicle and
remove wheel.
• Check encoder (1) for being crack, damaged or deformed.
• Turn wheel and check if encoder rotation is free from eccentricity and looseness.
• Check that no foreign material is attached. If any faulty is found, clean encoder or replace rear
wheel hub assembly. Refer to “Rear Wheel Hub
Removal and Installati on in Section 2C”.
Rear Wheel Encoder Removal and InstallationS7RS0B4506013
CAUTION!
Rear wheel encoder is included in rear wheel
hub assembly. If rear wheel encoder needs to
replaced, replace it as a rear wheel hub
assembly.

For removal and installation of front wheel hub
assembly, referring to “Rear Wheel Hub Removal and
Installation in Section 2C”.
1
I5JB0A450034-01
1
I6RS0B460038-03

Downloaded from www.Manualslib.com manuals search engine 4E-35 ABS:
Specifications
Tightening Torque SpecificationsS7RS0B4507001
NOTE
The specified tightening torque is also described in the following.
“Front Wheel Speed Sensor Components Location”
“Rear Wheel Speed Sensor Components Location”
“ABS Hydraulic Unit / Control Module Assembly Components”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
Special Tools and Equipment
Special ToolS7RS0B4508001
Fastening part Tightening torque
Note
N ⋅mkgf-mlb-ft
Brake pipe flare nut 16 1.6 11.5 )
ABS hydraulic unit / c ontrol module assembly
bolt 90.9 6.5)
ABS hydraulic unit / c ontrol module assembly
bracket bolt 25 2.5 18.0)
Front wheel speed sensor bolt 25 2.5 18.0 )
Front wheel speed sensor harness clamp bolt 11 1.1 8.0 )
Rear wheel speed sensor bolt 11 1.1 8.0 )
Rear wheel speed sensor har ness clamp bolt 11 1.1 8.0 )
09950–78220SUZUKI scan tool
Flare nut wrench (10 mm) —
) This kit includes following
items. 1. Tech 2, 2. PCMCIA
card, 3. DLC cable, 4. SAE
16/19 adapter, 5. Cigarette
cable, 6. DLC loop back
adapter, 7. Battery power
cable, 8. RS232 cable, 9.
RS232 adapter, 10. RS232
loop back connector, 11.
Storage case, 12. ) / )

Downloaded from www.Manualslib.com manuals search engine 4F-2 Electronic Stability Program:
Perform sensor calibration according to “Sensor Calibration”.
Precautions in Speedometer Test or Other TestsS7RS0B4600005
When performing speedometer or other tests using speedometer tester or chassis dynamometer, ESP® function must
be deactivated by ESP ® OFF switch or using SUZUKI scan to ol to complete the tests correctly.
When using SUZUKI scan tool, set to the “MISC. TEST” mode to stop the ESP ® function. Refer to SUZUKI scan tool
operator's manual for further details.
General Description
Electronic Stability Program DescriptionS7RS0B4601006
Electronic Stability Program (ESP ®) is an auxiliary function to enable the vehicle to av oid a danger safely while the
vehicle is running, stopping or turning.
Electronic Stability Program (ESP ®) consists of following functions.
ESP ® is a registered trademark of Daimler Chrysler AG.
Antilock Brake System (ABS)
This system prevents tire locking which may occur when br ake is applied suddenly or on slippery roads. With this
function, as the vehicle body is kept in the stable state an d tires unlocked, the driver can avoid any obstacle by turning
the steering wheel.
Electronic Brake force Distribution (EBD)
This function distributes braking force of front and rear wheels properly according to the vehicle load condition.
With this function, the braking force of the front and rear wheels is controlled for the optimum effect to secure the
maximum braking force regardless of the loadage.
Traction Control System (TCS)
This system controls the engine and brake to prevent the dr iving wheels from spinning at the time of starting and
accelerating. Particularly, this fu nction is helpful for safe driving on muddy or icy roads. When ESP ® control module
detects wheel spinning using information from the yaw rate sensor and wheel speed sensor, it lower the engine torque
by closing the electronic controlled thro ttle and controlling ignition. At the same time, brake is applied to the spinning
tire.
Stability Control
This function controls the vehicle body in the stable state by controlling the engine and braking so as to prevent the
vehicle from over-steering or under-steering while turning.
When under-steering occurs, this function lowers the engine torque and applies brake to the inner rear wheel in the
vehicle forward direction so as to pr event the vehicle from moving outward.
When over-steering occurs, this function applies brake to the outer front wheel in the vehicle forward direction so as to
prevent the vehicle from moving inward. Sensor Procedures required calibration
Steering angle sensor • Power is not su pplied to steering angle sensor. (battery, fuse and/or connector is
removed.)
• Steering angle sensor is replaced.
• Power is not supplied to ESP ® control module. (battery, fuse and/or connector is
removed.)
• ESP® hydraulic unit / control module assembly is replaced.
Master cylinder pressure sensor • ESP® hydraulic unit / control module assembly is removed or replaced.
Yaw rate / G sensor assembly • Yaw rate / G sensor assembly is removed or replaced.
• ESP® hydraulic unit / control module assembly is replaced.