remote control SUZUKI SX4 2006 1.G Service User Guide

Downloaded from www.Manualslib.com manuals search engine 10E-2 Keyless Start System:
Parts and FunctionsS6RW0DA501002
Parts Function
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 light 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 light and interior (DOME) light (answer back)
Key indicator light • 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 FunctionS6RW0DA501003
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 signal in the vehicle compartment. When the remote controller
(5) receives the request signal from the 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
light (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 position in this state, ID codes of ECM and keyless start control
module are compared through CAN communication (immobilizer function). When 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 light in the combination meter light in red to warn the driver that it
is not possible to turn the ignition knob switch.
In case of vehicle equipped with immobilizer control system, 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 indicator light in the combination meter flash to warn the driver that it is not
possible to start the engine.
[A]: i) ~ vii)
83
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I5RW0AA50002-03
[A]: Signal flow 8. ECM

Downloaded from www.Manualslib.com manuals search engine 10E-4 Keyless Start System:
Door Lock Function of Keyless Start SystemS6RW0DA501004
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 module (2) activates the center antenna (3) and luggage room
antenna (4) to send out the radio wave in the vehicle compartment 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 operation 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 operation indicator light (7) of the remote controller light up. Lighting of the operation
indicator light 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) state 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 receives 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 vehicle 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.
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9 2
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I5RW0AA50003-03
[A]: Signal flow

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-5
Operation Area of Remote ControllerS6RW0DA501005
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 conditions as described below. And when the keyless engine start
function doesn’t work, the key indicator light in the combination meter may light up.
• Doors cannot be locked or unlocked using the door 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 container 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 container 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, on the rear parcel shelf or in a corner of the luggage room)
[A][B]
[C]1
1
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25
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I5RW0AA50004-04
[A]: Door lock function of keyless start system 3. Center antenna
[B]: Function of keyless start system to prevent remote controller
from being closed in vehicle compartment4. Luggage room antenna
[C]: Keyless engine start function 5. Vehicle compartment including luggage room
1. About 80 cm (31.5 in, 2.6 ft) 6. Vehicle compartment excluding luggage room
2. Each door antenna

Downloaded from www.Manualslib.com manuals search engine 10E-6 Keyless Start System:
• The ignition knob switch cannot be turned using 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 container 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, on the rear parcel shelf or in a corner of the luggage room)
Alarm FunctionS6RW0DA501006
Under conditions as described in the table below, the keyless start control module makes the key indicator light flash in
red and the buzzer sound to call the driver’s attention.
CAN Communication System DescriptionS6RW0DA501007
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description.
Keyless start control module communicates control data with each control module as follows.
Keyless Start Control Module Transmission DataCondition Buzzer operation Key indicator light 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 controller carried-out alarm)5 times Flashing in red
BCM ECMCombination
Meter
ID code of keyless start control modulee
ECM-keyless start control module codeke
Ignition knob switch signal
Door lock/unlock request signal
Buzzer request signal
Answer back request signal
Panic alarm request signal
Key indicator light control signal DATA Transmit
Keyless Start
Control Module
I7RW01A50002-01

Downloaded from www.Manualslib.com manuals search engine 10E-8 Keyless Start System:
Diagnostic Information and Procedures
Precautions in Diagnosing TroublesS6RW0DA504001
• The keyless start system executes data transmission/
reception by means of the radio wave. Therefore,
proper operation may not be obtained if use of the
door lock function and engine start function of the
keyless start system is attempted near the place
where strong radio wave is emitted (TV and radio
broadcasting stations, etc.).
• Diagnostic information stored in keyless start control
module memory can be checked only by key indicator
light.
• Be sure to use the trouble diagnosis procedure as
described in “Keyless Start System Check”. Failure to
follow it may result in incorrect diagnosis. (Some other
DTC may be stored by mistake in the memory of
keyless start control module during inspection.)
• Be sure to read“Precautions for Electrical Circuit
Service in Section 00” before inspection and observe
what is written there.
• Communication of ECM, TCM (A/T model), BCM,
ABS control module, 4WD control module (if
equipped), keyless start control module and
combination meter is established by CAN (Controller
Area Network). (For detail of CAN communication for
keyless start control module, refer to “CAN
Communication System Description”). Therefore,
handle CAN communication line with care referring to
“Precaution for CAN Communication System in
Section 00”.
• Replacement of the keyless start control module
When keyless start control module is replaced with
new one, make sure that register remote controller ID
code to keyless start control module correctly
according to “Registration Procedure for Remote
Controller ID Code”.• Keyless start control module substitution
When the keyless start control module used in
another vehicle was installed in the vehicle being
serviced, register the ID code of the remote controller
to the keyless start control module first and then the
following code.
– With immobilizer control system, register the
ignition key transponder code for the immobilizer
control system in ECM. For registration procedure
of that, refer to “Registration of the Ignition Key in
Section 10C”.
– Without immobilizer control system, register the
steering lock unit ID code in keyless start control
module. For registration procedure of that, refer to
“Keyless Start Registration”.
Self-Diagnosis FunctionS6RW0DA504002
The keyless start control module has self-diagnosis
function to monitor the system components and circuits
while the keyless start system is at work. When the
keyless start control module detects an abnormality in
the system, it saves the area where such abnormality
has occurred as a DTC in its memory. The DTC stored in
memory of the keyless start control module is indicated
by the key indicator light in the combination meter
flashing in a specific pattern. For DTC indication, refer to
“DTC Check” and for the clearing procedure, to “DTC
Clearance”.
Keyless Start System Diagnosis IntroductionS6RW0DA504003
To ensure that the trouble diagnosis is done accurately
and smoothly, observe “Precautions in Diagnosing
Troubles” and follow “Keyless Start System Check”.
4. Ignition knob switch 13. Rear end door request switch 22. Ignition Switch
5. Key reminder switch 14. Driver side door lock switch
6. Driver side door antenna 15. Passenger side door lock switch

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-13
Keyless Start System Symptom DiagnosisS6RW0DA504010
Door Lock Function of Keyless Start System
NOTE
Before performing trouble diagnosis procedure for door lock function of keyless start system, check
that power door lock system operates properly referring to “Power Door Lock System Operation
Inspection (If Equipped) in Section 9F”. If power door lock system does not operate properly, go to
“Power Door Lock System Symptom Diagnosis (If Equipped) in Section 9F”.

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”.

Condition Possible cause Correction / Reference Item
All doors can not be
locked / unlocked by all of
door request switchesCircuit fuse(s) blownReplace fuse(s) and check for short circuit.
Remote controller battery deadReplace battery.
Remote controller faultyCheck remote controller for operation referring
to “Remote Controller Inspection”.
Wiring or grounding faultyRepair circuit.
Antennas or keyless start control
module faultyCheck input and output signals of keyless start
control module referring to “Inspection of
Keyless Start Control Module and Its Circuits”.
BCM faultyCheck input and output signal of BCM referring
to “Inspection of BCM and Its Circuits in
Section 10B”.
All doors can not be
locked / unlocked by any
one of door request
switchRequest switch faultyCheck request switch for operation referring to
“Front Door (Driver and Passenger Side), Rear
End Door Request Switch Inspection”.
Wiring or grounding faultyRepair circuit.
Antennas or keyless start control
module faultyCheck input and output signals of keyless start
control module referring to “Inspection of
Keyless Start Control Module and Its Circuits”.
BCM faultyCheck input and output signal of BCM referring
to “Inspection of BCM and Its Circuits in
Section 10B”.
Condition Possible cause Correction / Reference Item
Engine can not be started
by turning Ignition knob
switchCircuit fuse(s) blownReplace fuse(s) and check for short circuit.
Remote controller battery deadReplace battery.
Remote controller faultyCheck remote controller for operation referring
to “Remote Controller Inspection”.
Steering lock unit faultyCheck steering lock unit for operation referring
to “Steering Lock Unit Inspection”.
Wiring or grounding faultyRepair circuit.
Antennas or keyless start control
module faultyCheck input and output signals of keyless start
control module referring to “Inspection of
Keyless Start Control Module and Its Circuits”.
ECM faultyCheck input and output signal of ECM referring
to “Inspection of ECM and Its Circuits in
Section 1A”.

Downloaded from www.Manualslib.com manuals search engine 10E-14 Keyless Start System:
Keyless Start System Operation InspectionS6RW0DA504011
Keyless Engine Start Operation
1) Sit in driver seat with remote 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 light (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 light 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
light in combination meter turns off. In such
case, take your hand off from ignition knob
switch once and operate it again.

Door Lock Operation (Keyless Start System)S6RW0DA504012
1) Check that all door locks are released and all doors
are closed.
2) With remote controller of which ID code is registered
in keyless start control module carried with yourself,
check that pushing driver door request switch once
locks all doors.
3) Check that pushing request switch of driver door,
passenger door or rear end door once releases
corresponding door lock.
4) Check that pushing again request switch pushed in
Step 3) releases all door locks.
NOTE
If door of which request switch has been
pushed is opened/closed before performing
Step 4), all door locks will not be released
even when Step 4) is performed. If Step 4) is
performed after door is opened/closed, only
the door of which request switch was pushed
will be locked.

Inspection of Keyless Start Control Module and
Its Circuits
S6RW0DA504013
Keyless start control module and its circuits can be
checked at keyless start control module wiring couplers
by measuring voltage and resistance.
CAUTION!
Keyless start control module cannot be
checked by itself. It is strictly prohibited to
connect voltmeter or ohmmeter to keyless
start control module with coupler
disconnected from it.

1 2
I4RS0BA50012-01
I4RS0BA50013-01

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-17
Reference waveform No. 1
Driver, passenger and rear end door antenna request
signals (Request signal (1) transmitted by each door
antenna when each door request switch is pushed)Reference waveform No. 2
Center antenna signal
(Request signal (1) transmitted by center antenna when
each door request switch is pushed)
Reference waveform No. 3
Luggage room antenna signal
(Request signal (1) transmitted by luggage room
antenna when each door request switch is pushed) Measurement
terminalDriver side door antenna
• CH1: “G16-2” to “G16-9”
• CH2: “G16-1” to “G16-9”
Passenger side door antenna
• CH1: “G16-24” to “G16-9”
• CH2: “G16-23” to “G16-9”
Rear end door antenna
• CH1: “G16-4” to “G16-9”
• CH2: “G16-3” to “G16-9”
Oscilloscope setting CH1: 5 V/DIV, CH2: 5V/DIV
TIME: 40 ms/DIV
Measurement
conditionRequest switch of each door is
pushed with remote controller
carried
I4RS0BA50015-02
Measurement
terminalCH1: “G16-6” to “G16-9”
CH2: “G16-5” to “G16-9”
Oscilloscope setting CH1: 10 V/DIV, CH2: 2 V/DIV
TIME: 20 ms/DIV
Measurement
condition• Ignition knob switch of steering
lock unit is pushed
• Request switch of each door is
pushed with remote controller
carried
Measurement
terminalCH1: “G16-8” to “G16-9”
CH2: “G16-7” to “G16-9”
Oscilloscope setting CH1: 10 V/DIV, CH2: 10 V/DIV
TIME: 20 ms/DIV
Measurement
condition• Request switch of each door is
pushed with remote controller
carried
I5JB0AA50024-03
I5JB0AA50025-02

Downloaded from www.Manualslib.com manuals search engine 10E-22 Keyless Start System:
Description
When the ignition knob switch is pushed, the key indicator light lights up in blue if you carry the remote controller
registered in the keyless start control module and it lights in red if you carry the remote controller which has not been
registered in the keyless start control module or if you carry no remote controller.
Troubleshooting
Step Action Yes No
1Combination meter power and ground circuit check
1) Turn ignition switch to ON position.
Do warning lights in combination meter other than key
indicator light light up?Go to Step 2. Check main fuse, circuit
fuse, combination meter
power and ground
circuit.
2Keyless start control module power and ground circuit
check
1) Check keyless start control module power and ground
circuit for condition referring to “Keyless Start Control
Module Power and Ground Circuit Check”.
Is it in good condition?Go to Step 3. Repair circuit.
3Steering lock unit ignition knob switch check
1) Check ignition knob switch of steering lock unit for
operation referring to “Steering Lock Unit Inspection”.
Is it in good condition?Go to Step 4. Replace steering lock
unit.
4Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from keyless start control
module, steering lock unit and combination meter.
3) Check for open, short and high resistance in following
circuits.
• Ignition knob switch signal circuit
• Keyless start control module and combination meter
CAN communication circuit
Is each circuit in good condition?Go to Step 5. Repair circuit.
5Keyless start system operation check
1) With remote controller of which ID code is registered in
keyless start control module carried with you, try to turn
ignition knob switch.
Can it be turned to any position other than “LOCK” position?Replace combination
meter.Substitute a known-
good keyless start
control module and
recheck.