2005 SUZUKI SWIFT Light

Downloaded from www.Manualslib.com manuals search engine 10C-7 Immobilizer Control System:
Scan Tool DataS7RS0BA304005
Scan Tool Data Definitions
NUMBER OF LEARNT KEY
0 – 4 PCS: The number of the transponder code in the transponder built in the ignition key that is registered with ECM
NOTE
A maximum of four transponder codes can be registered with ECM. Therefore, the maximal value
should be 4.

INPUT YEAR
20**: The year in which the transponder code in the transpon der built in the ignition key is registered with ECM
INPUT MONTH
1 – 12: The month in which the transponder code in the transpond er built in the ignition key is registered with ECM
Immobilizer Indicator Lamp Does Not Come ON with Ignition Switch ON and Engine StopS7RS0BA304006
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Circuit Description
When the ignition switch is turned ON, ECM read the code by the coil antenna from ignition key. Then if the code in
transponder in the key match with the one registered with ECM, transmits indication ON signal of immobilizer indicator
lamp to combination meter in order to turn immobilizer indicator lamp on. And then, combination meter turns
immobilizer indicator lamp on. When th e engine starts to run and no malfunction is detected in the system, ECM
transmits immobilizer indi cator lamp indication OFF signal to combination meter in order to turn immobilizer indicator
lamp off. And then, comb ination meter turns immobilizer indicator lamp off, but if a malfunction was or is detected,
immobilizer indicator lamp is flashes ON and OF F, when ignition switch turn to ON position.
Troubleshooting Scan Tool Data Vehicl
e Condition Normal Data
NUMBER OF LEARNT KEY Ignition switch at ON position 0 – 4 INPUT YEAR Ignition switch at ON position 2005 or later
INPUT MONTH Ignition switch at ON position 1 – 12
Step Action YesNo
1 Immobilizer indicator lamp power supply check
1) Turn ignition switch to ON position.
Do other warning lights come ON? Go to Step 2.
Go to Step 4.
2 DTC check of ECM
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch and check DTC.
Is DTC P1674, P1675, P1678 and/or P1685 detected? Go to applicable DTC
diag. flow.
Go to Step 3.
3 DTC check of BCM
1) Check BCM for DTC referring to “DTC Check in Section
10B”.
Is DTC U1073, U1100 and/or U1144 detected? Go to applicable DTC
diag. flow.
Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
lamp still remains OFF,
substitute a known good
ECM and recheck.

Downloaded from www.Manualslib.com manuals search engine 10E-2 Keyless Start System:
Parts and FunctionsS7RS0BA501002
PartsFunction
Keyless start control module • Activates each antenna
• Verifies ID code of remote controller
• Requests steering lock unit to release steering lock
• Requests BCM to lock or unlock doors
• Controls key indicator la
mp in combination meter
• Transmits its ID code to ECM
Remote controller • Receives request signal from each antenna
• Transmits ID code and request signal to keyless start control module
• Request keyless start control module to lock or unlock doors (keyless entry
system function)
Request switch • Requests keyless start control module to activate each antenna
Center antenna • Transmits request signal to remote controller
Luggage room antenna • Transmits request signal to remote controller
Driver side door antenna • Transmits request signal to remote controller
Passenger side door antenna • Transmits request signal to remote controller
Rear end door antenna • Transmits request signal to remote controller
Steering lock unit • Releases steering lock
Unlock button • Transmits door unlock request signal (keyless entry system function)
Lock button • Transmits door lock request signal (keyless entry system function)
BCM • Controls each door lock actuator
• Controls warning buzzer
• Lights hazard warning lamp and interior (DOME) light (answer back)
Key indicator lamp • Indicates operation state of keyless start system (indicates check result of
remote controller ID code)
ECM • Checks keyless start control module ID code
• Transmits its ID code to keyless start control module
• Starts engine

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-3
Keyless Engine Start FunctionS7RS0BA501003
When the ignition knob switch (2) installed to the steering lock unit (1) is pushed, the keyless start control module (3)
activates the center antenna (4) to send out the request signa l in the vehicle compartment. When the remote controller
(5) receives the request signal from th e center antenna, it transmits the ID code to the keyless start control module.
The keyless start control module compares the ID code sent by the remote controller with the ID code registered in the
keyless start control module. When these ID codes match, the keyless start control module makes the key indicator
lamp (7) in the combination meter (6) light in blue and unlocks the steering lock unit to enable the ignition knob switch
to turn. When the ignition knob switch is turned to ON posit ion in this state, ID codes of ECM and keyless start control
module are compared through CA N communication (immobilizer function). Wh en they match, turning the ignition knob
switch to start position will start the engine.
NOTE
When ignition knob switch is at ACC or ON position (engine not running) and any door has been kept
open for a certain time, it may happen that engine fails to start. In such a case, turn ignition knob
switch to OFF position once and then try to start engine again.

When the ID code from the remote controller and the ID code registered in the keyless start control module do not
match or when the remote controller is outside the operation area of the remote controller and the ignition knob switch
is pushed, the steering lock unit cannot be unlocked and so the ignition knob switch cannot be turned. Then, the
keyless start control module makes the key indicator lamp in t he combination meter light in red to warn the driver that
it is not possible to turn the ignition knob switch. Also, when the ID code of ECM and that of the keyless start control
module do not match, the engine cannot be started even if the ignition knob switch is turned to the start position. Then
ECM makes the immobilizer light in the combination mete r flash to warn the driver that it is not possible to start the
engine.
8 3
1
6 ii)
iii) iii)
iii)
iii)
iv)
i)
v)
vi)
vii)
7 6
2
[A]: i) ~ vii)
54
I5RS0CA50001-01
[A]: Signal flow
8. ECM

Downloaded from www.Manualslib.com manuals search engine 10E-4 Keyless Start System:
Door Lock Function of Keyless Start SystemS7RS0BA501004
When the request switch (1) incorporated in the outside handle of the driver side door, front passenger side door or
rear end door is pushed, the keyless start control modul e (2) activates the center antenna (3) and luggage room
antenna (4) to send out the radio wave in the vehicle compartm ent to check if the remote controller (5) is in the vehicle
compartment or not. When the keyless start control module receives no signal from the remote controller (i.e., the
remote controller does not exist in the vehicle compartment) , it activates the antenna (6) of the door of which the
request switch has been pushed to send the request signal out of the compartment.
If the remote controller exists within the door lock operati on area, it receives the request signal sent from the above
said antenna, sends the ID code of the remote controller and the request signal to the keyless start control module and
at the same time, it makes the operatio n indicator lamp (7) of the remote controller light up. Lighting of the operation
indicator lamp indicates that the remote controller sent the ID code and the request signal.
The keyless start control module compares the ID code sent from the remote controller with the ID code registered in
the keyless start control module. If both ID codes match, the keyless start control module outputs the lock or unlock
request signal (depending on the door lock switch (8) stat e then) to BCM (9). When BCM receives such signal through
CAN communication from the keyless start control module, it activates the door lock actuator to lock or unlock doors.
When the keyless start control module receiv es a signal from the remote controller (i.e., the remote controller exists in
the vehicle compartment), the function of the keyless start system to prevent the remote controller from being closed in
the vehicle works and the keyless start control module sends a request signal to unlock doors to BCM. In this way,
doors are kept unlocked.
Also, when the driver or passenger has left the vehicl e with the remote controller left behind in the vehicle
compartment and locked doors by using the door lock knob or manual door lock switch, the function to prevent the
remote controller from being closed in the vehicle works to unlock doors.
Furthermore, when ID codes of the remote controller and keyless start control module do not match or the remote
controller exists outside of the operation area, doors are not locked or unlocked even if the request switch of the
outside handle is operated.
9 2
vi)
v)
vii) iv)
i) ii)
iii)
iii)iii)
ii)
iii)
iii)
iii)
3
5
8
6
1 4
7
[A]: i) ~ viii)
viii)
I4RS0BA50003-02
[A]: Signal flow

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-5
Operation Area of Remote ControllerS7RS0BA501005
Shown below are the operation areas of the remote controller for the keyless engine start function and door lock
function of the keyless start system.
However, even when the remote controller is within the operation area as shown above, there are cases where the
keyless start system doesn’t work under certain conditi ons as described below. And when the keyless engine start
function doesn’t work, the key indicator la mp in the combination meter may light up.
• Doors cannot be locked or unlocked using the doo r lock function of keyless start system when:
– The remote controller which has been registered in the keyless start control module and another un-registered one are both carried at the same time
– The remote controller is kept in some metallic co ntainer which disturb radio wave transmission/reception
– One of doors is open
– The ignition key is inserted in the ignition key cylinder
• The function of the keyless start system to prevent the remote controller from being closed in the vehicle
compartment doesn’t work when:
– The remote controller is in the door pocket or in the glove box
– The remote controller is kept in some metallic co ntainer which disturb radio wave transmission/reception
– The remote controller is placed close to outside of the vehicle compartment (such as on the instrument panel beside the front window shield glass or in a corner of the luggage room)
• The ignition knob switch cannot be turned usin g the keyless engine start function fails to turn:
– The remote controller which has been registered in the keyless start control module and another un-registered one are both carried at the same time
– The remote controller is kept in some metallic cont ainer which disturbs radio wave transmission/reception
– The ignition knob switch has been pushed for 5 seconds or longer
– The remote controller is placed close to outside of the vehicle compartment (such as on the instrument panel beside the front window shield glass or in a corner of the luggage room)
[A] [B]
[C]
1
1
1
25
6
3
3 4
2
2
I4RS0BA50004-02
[A]: Door lock function of keyless start system 1. About 80 cm (31.5 in, 2.6 ft)4. Luggage room antenna
[B]: Function of keyless start system to prevent remote controller from being closed in vehicle compartment 2. Each door antenna
5. Vehicle compartment including luggage room
[C]: Keyless engine start function 3. Center antenna6. Vehicle compartment excluding luggage room

Downloaded from www.Manualslib.com manuals search engine 10E-6 Keyless Start System:
Alarm FunctionS7RS0BA501006
Under conditions as described in the table below, the keyless start control module makes the key indicator lamp flash
in red and the buzzer sound to call the driver’s attention.
CAN Communication System DescriptionS7RS0BA501007
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description.
Keyless start control module communicates control data wit h each control as follows.
Keyless Start Control Module Transmission Data
Keyless Start Control Module Reception Data Condition Buzzer operation Key indicator lamp operation
Ignition knob switch has stopped between ACC and OFF
positions while driver side door is opened (ignition knob
switch un-returned alarm) Intermittent —
Ignition switch has stopped between ACC and OFF
positions while driver side door is closed (ignition knob
switch un-returned alarm) 2 times Flashing in red
Remote controller is carried out of vehicle and doors are
closed while ignition switch is at ON position (remote
controller carried-out alarm) 5 times Flashing in red
Remote controller is carried out of vehicle through a window
without opening door while ignition switch is at ON position
(engine is running) and vehicle has been driven at 10km/h
(6 MPH) or more speed without remote controller in vehicle
compartment (the first time 10 km/h (6 MPH) speed is
exceeded only) (Remote cont roller carried-out alarm) 5 times Flashing in red
BCM
ECM Combination
Meter
ID code of keyless start control module
ECM-keyless start control module code
Ignition knob switch signal
Door lock/unlock request signal
Buzzer request signal
Answer back request signal
Key indicator light control signal
DATA
Transmit
Keyless Start
Control Module
I6JB0AA50005-01
Vehicle speed signal
ECM-keyless start control module code
Door switch status
Door lock status
Charging system signal
Engine oil pressure switch signal ECM BCM
DATA
ReceiveKeyless Start
Control Module
I5RW0CA50001-02

Downloaded from www.Manualslib.com manuals search engine 10E-10 Keyless Start System:
Key Indicator Lamp CheckS7RS0BA504006
Push the ignition knob switch (2) of the steering lock unit
(1) and check that the key indicator lamp (3) in the
combination meter lights up in red or blue. If it does not
light, go to “Key Indicator Lamp Circuit Check (Key
indicator lamp doesn’t light when ignition knob switch is
pushed.)”.
DTC CheckS7RS0BA504007
1) Check to make sure that all doors are closed.
2) Open driver side door window glass and door.
3) Check to make sure that ignition key is not inserted in ignition key cylinder. If it is, remove it.
4) Perform “Key Indicator Lamp Check”.
5) Close driver side door and within 15 seconds after that, perform Steps a) through e) described below.
a) Insert ignition key (1) in ignition key cylinder (2).
b) Remove ignition key from ignition key cylinder.
c) Repeat Steps a) and b) twice.
d) Insert ignition key in ignition key cylinder.
e) Push driver side door request switch (3) 4 times. At the end of Step e), buzzer sounds 4 times to
inform that trouble diagnosis mode has started.
3
1
2
I4RS0BA50008-01
2
1
3
I4RS0BA50009-02

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-13
Keyless Engine Start Function
NOTE
Before performing symptom diagnosis procedure for keyless engine start system, check that engine
starts by using ignition key. If it cannot be started by using ignition key, go to “Engine Symptom
Diagnosis in Section 1A”.

Keyless Start System Operation InspectionS7RS0BA504011
Keyless engine start operation
1) Sit in driver seat with re mote controller carried with
you.
2) Check that all doors are closed and ignition key is not inserted in ignition key cylinder.
3) While pushing ignition knob switch (1) of steering lock unit, check if ignition knob switch can be turned
from its lock position.
If key indicator lamp (2) in combination meter lights
in blue and ignition knob switch can be turned from
its lock position in this check, keyless engine start
operation is in good condition.
If key indicator lamp in combination meter lights in
red and ignition knob switch cannot be turned from
its lock position in this check, go to “Keyless Start
System Check”.
NOTE
Pushing ignition knob switch for 5 seconds
or longer causes function to protect steering
lock releasing solenoid against heat to work.
Then steering lock unit stops energizing
solenoid, preventing ignition knob switch
from turning. At the same time, key indicator
lamp in combination mete r turns off. In such
case, take your hand off from ignition knob
switch once and operate it again.

Condition Possible cause Correction / Reference Item
Engine can not be started
by turning Ignition knob
switch Circuit fuse(s) blown
Replace fuse(s) and check for short circuit.
Remote controller battery dead Replace battery.
Remote controller faulty Check remote controller for operation referring
to “Remote Controller Inspection”.
Steering lock unit faulty Check steering lock unit for operation referring
to “Steering Lock Unit Inspection”.
Wiring or grounding faulty Repair circuit.
Antennas or keyless start control
module faulty Check input and output signals of keyless start
control module referring to “Inspection of
Keyless Start Control Mo
dule and Its Circuits”.
ECM faulty Check input and output signal of ECM referring
to “Inspection of ECM and Its Circuits in
Section 1A”.
1
2
I4RS0BA50012-01