wheels SUZUKI SWIFT 2008 2.G Service Service Manual
[x] Cancel search | Manufacturer: SUZUKI, Model Year: 2008, Model line: SWIFT, Model: SUZUKI SWIFT 2008 2.GPages: 1496, PDF Size: 34.44 MB
Page 541 of 1496

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  
Page 551 of 1496

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-12
DTC ClearanceS7RS0B4504006
WARNING! 
When performing a driving test, select a safe 
place where there is neither any traffic nor 
any traffic accident possibility and be very 
careful during testing to avoid occurrence of 
an accident.
 
After repair or replace malfunction part(s), clear all DTCs 
by performing the following procedure or using SUZUKI 
scan tool.
1) Connect SUZUKI scan tool to data link connector in  the same manner as when making this connection 
for DTC check.
2) Turn ignition switch to ON position.
3) Erase DTC according to instructions displayed on  scan tool. Refer to scan tool operator’s manual for 
further derails.
NOTE
For DTC C 1021, C1022,  C1025, C1026, C1031, 
C1032, C1035, C1036 and C1061, confirm that 
ABS warning light turns off after performing 
Step 2 of “Test Driving” under “ABS Check”, 
and then clear the DTCs.
 
4) After completing the clear ance, turn ignition switch 
OFF and disconnect scan tool from data link 
connector.
5) Perform “Driving Test” (S tep 2 of “ABS Check”) and 
“DTC Check” and confirm that NO DTC is displayed 
on scan tool.
Scan Tool DataS7RS0B4504007
The parameter data below are values measured with the 
scan tool when the normally operating vehicle is under 
the following conditions. When taking measurements for 
comparison by using the scan tool, be sure to check that 
the vehicle is under the following conditions.
• Apply parking brake and block wheels.
• Ignition switch ON.
• Turn OFF air conditioner (if equipped).
• Apply no load to power steering (if equipped). (Don’t  turn it)
• Turn OFF all electric loads (except ignition).
• No DTC.
• ABS is not operated. (N ormal braking operation)
Scan Tool Data Definition
Battery Volt (V):   Battery Voltage is an analog input 
signal read by the ABS control module. Certain ABS 
control module function s will be modified if the 
battery voltage falls below or rises above 
programmed thresholds.
Pump Motor Driver (V):   This parameter indicates the 
operational condition of the pump motor driver 
(transistor).
RF Wheel Speed, LF Wheel Speed, RR Wheel Speed  and LF Wheel Speed (km/h, MPH):   Wheel speed 
is an ABS control module inte rnal parameter. It is 
computed by reference pulses from the wheel speed 
sensor.
Brake Switch (ON, OFF):   This switch signal informs 
the ABS control modu le whether the brake is active 
or not.
Scan Tool 
Data Standards Condition
Battery 
Voltage 10.0 – 18.0 V —
Pump Motor 
Driver 0.0 V —
RF Wheel 
Sp ee d 0 km/h, 0.0 MPH Vehicle stop
LF Wheel 
Sp ee d 0 km/h, 0.0 MPH Vehicle stop
RR Wheel 
Sp ee d 0 km/h, 0.0 MPH Vehicle stop
LR Wheel 
Sp ee d 0 km/h, 0.0 MPH Vehicle stop
Brake Switch  ONBrake pedal 
depressed
OFF Brake pedal released  
Page 567 of 1496

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  
Page 576 of 1496

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.