300 SUZUKI SX4 2006 1.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine Paint / Coatings: 9L-11
[C]: Both side “E”: Apply under coating (PVC, 600 µm or more).
“A”: Apply undercoating (PVC, 400 µm or more). “F”: Do not apply undercoating and anti-chip coat.
“B”: Apply anti-chip coat (300 µm or more) (Except vehicle with splash
guard).
I7RW019C0005-01
[A]: 2WD vehicle “B”: Apply undercoating (PVC, 600 µm or more).
[B]: 4WD vehicle “C”: Do not apply undercoating and anti-chip coat.
“A”: Apply undercoating (PVC, 400 µm or more). “D”: Do not apply undercoating (4WD model only).

Downloaded from www.Manualslib.com manuals search engine 9L-12 Paint / Coatings:
Anti-Corrosion Compound Application AreaS6RW0D9C03003
I5RW0C9C0013-01
“A”: Apply rust proof wax (hot wax 50 µm or more).
“B”: Apply rust proof wax (high viscosity wax 50 µm or more).
“C”: Never fill up drain holes with rust proof wax.

Downloaded from www.Manualslib.com manuals search engine 10B-7 Body Electrical Control System:
Component Location
BCM and Related System Component LocationS6RW0DA203001
13
12 17 18
21 19
14
24 25
2526
2722 23
22
2476
20
11
5
151615
16 [A] [B]
2
9
10
3
8
4
1
I6RW0DA20002-01
[A]: Auto A/C 9. Rear end door opener switch (if equipped) 19. Lighting switch
[B]: Manual A/C 10. Rear end door opener actuator (incorporated in
door switch)20. Manual door lock switch (if equipped)
1. Generator 11. Keyless entry receiver or keyless start control
module (if equipped)21. Key reminder switch (included in ignition switch)
2. Brake fluid level switch 12. Parking brake switch 22. Junction block
3. ECM 13. Seat belt buckle switch 23. BCM
4. Oil pressure switch 14. Theft deterrent light 24. Horn relay
5. Outside air temperature sensor (if equipped) 15. Rear end door window defogger switch 25. Rear wiper relay
6. Door lock actuator (incorporated in key
cylinder switch)16. A/C switch (if equipped) 26. Rear end door window defogger relay
7. Door switch 17. Hazard warning switch 27. Turn signal and hazard warning relay
8. Interior light 18. Rear wiper switch

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-1
Control Systems
Immobilizer Control System
Precautions
Precautions in Diagnosing TroublesS6RW0DA300001
• Before confirming the diagnostic trouble code (DTC),
do not disconnect connector from ECM, battery cable
from battery, ground wire harness, or main fuse. Such
disconnection will erase DTC stored in ECM.
• DTC stored in ECM memory can be checked as well
as cleared by using SUZUKI scan tool. Before using
SUZUKI scan tool, read its operator’s manual
carefully to know how to use it and what functions are
available.
• Be sure to read “Precautions for Electrical Circuit
Service in Section 00” before inspection.
• Communication of ECM, BCM, ABS control module,
TCM (if equipped), 4WD control module (if equipped),
keyless start control module (if equipped),
combination meter and DLC is established by CAN
(Controller Area Network). Therefore, handle CAN
communication lines with care referring to “Precaution
for CAN Communication System in Section 00”.
For CAN communication system, refer to description
on “CAN Communication System Description in
Section 1A”.
Precaution in Replacing ECMS6RW0DA300002
• If ECM is replaced with new or used one without
Immobilizer control function, the engine will not be
started. In case of the above, check if the newly
installed ECM has Immobilizer control function.
• After ECM is replaced with new one or used one, the
transponder code in the transponder built in the
ignition key has to be registered with ECM. Or, the
engine cannot be started up. For the registration
procedure, refer to “Procedure after ECM
Replacement”.
Precaution in Replacing Ignition KeyS6RW0DA300003
To register ignition key in case of replacing key(s) and/or
making spare key(s), the transponder code in the ignition
key is registered with ECM. Or the engine can not be
started up. For the registration procedure, refer to
“Registration of the Ignition Key”.
Precautions in Handling Immobilizer Control
System
S6RW0DA300004
• Do not turn ON ignition switch with ignition key in
contact with another one or quite close to another
one. Or, the immobilizer control system may detect
some abnormal condition and prevent the engine from
starting.
• Do not turn ON ignition switch by using ignition key
with any type of metal (1) wrapped its grip or in
contact with it. Or, the immobilizer control system may
detect some abnormal condition and prevent the
engine from starting.
I3RH0AA30001-01
1
I3RH0AA30002-01

Downloaded from www.Manualslib.com manuals search engine 10C-2 Immobilizer Control System:
• Do not leave ignition key in a place where
temperature is high. High temperature may cause
damage to the transponder built in the ignition key.• Do not turn ignition switch to ON position by bringing
radio antenna close to coil antenna. Or, the
immobilizer control system may detect some
abnormal condition and prevent the engine from
starting.
General Description
Immobilizer Control System IntroductionS6RW0DA301001
The immobilizer control system is an anti-theft device that immobilizes the vehicle. It stops the engine from working
and prevents the vehicle from being stolen. It mainly consists of the following components. For immobilizer control
system components location, refer to “Immobilizer Control System Components Location”.
•ECM
• ICM with the built-in coil antenna
• Ignition key with the built-in transponder
A code called the transponder code is memorized in the transponder. And, the code is registered with ECM. Basically,
when the ignition switch is turned ON, ECM reads the code by the coil antenna. Then, if the code in transponder in the
ignition key does not match with the one registered with ECM, ECM stops the operation of the fuel injection so as not
to start up the engine and turns the immobilizer indicator light ON and OFF using CAN communication lines. (In
addition to the above operation, ECM also turns the immobilizer indicator light ON and OFF when some trouble is
detected in the keyless start system.)
On-Board Diagnostic System Description (Self-diagnosis Function)S6RW0DA301002
ECM diagnoses if there is any trouble with the immobilizer control system. The diagnostic information is stored as the
diagnostic trouble code (DTC) in ECM. To read the diagnostic information, use SUZUKI scan tool referring to “DTC
Check”.
With the ignition switch turned ON (but the engine at stop) regardless of the condition of the engine and emission
control system, ECM indicates whether there is any trouble with the immobilizer control system or not by either lighting
ON or flashing ON and OFF the immobilizer indicator light.
Immobilizer indicator light lights ON:
No trouble exists in the immobilizer control system. (After starting up the engine, the light turns OFF.)
Immobilizer indicator light flashes ON and OFF:
There is some trouble in the immobilizer control system or in the keyless start system. Its diagnostic information is
stored in ECM.
I3RH0AA30003-01
I3RH0AA30004-01

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Schematic and Routing Diagram
Immobilizer Control System Wiring Circuit DiagramS6RW0DA302001
NOTE
For more details about power supply circuit, ground wire circuit, and each circuit for ECM, BCM, ABS
control module, keyless start control module and combination meter, refer to “System Circuit Diagram
in Section 9A”.

BLK/WHT
BLK/ORN12V
G17-1
G17-2
12V
5V
12V
12VYEL/RED
YEL/BLK
G17-4
G17-3
5V
BRN
BRN/YEL
BLK/YEL
1 2
22
2 34
251014
15
1 2 3
4 G17
[A]
5
6
G16-20 G16-29 G16-30 G146-3 G146-7 G146-8
WHT/RED
5V
5V
9
G16-18G16-19 E01-13
E01-28
BLU
BLU
RED
WHTE08-12
E08-1E01-18
E01-3
RED
WHTE08-13
E08-2E04-1
E04-2
WHT
RED
G04-1
G04-3
12V
E04-9
G04-5
PPL/WHTL313-3 8
11
12
13
G17-5WHT 76
G17-6WHT/RED
17
REDWHT
REDWHT
G241-10 G241-7
IG1
18
WHT
REDG04-4
G04-2
16 [B]
I6RW0DA30001-02

Downloaded from www.Manualslib.com manuals search engine 10C-4 Immobilizer Control System:
BLK/WHT
BLK/ORN12V
G17-1
G17-2
12V
5V
12V
12VYEL/RED
YEL/BLK
G17-4
G17-3
5V
BRNBRN/YELBLK/YEL
1 2
22
2 34
251014
15
1 2 3
4 G17
[A]
5
6
G16-20 G16-29 G16-30 G146-3 G146-7 G146-8
WHT/RED
5V
5V
9
G16-18G16-19 E01-13
E01-28
BLU
RED
WHTE08-12
E08-1E01-18
E01-3
RED
WHTE08-13
E08-2
WHT
RED
G05-4
G05-2
12V
G05-35 8
11
G17-5WHT 76
G17-6WHT/RED
17
REDWHT
REDWHT
G241-10 G241-7
IG1
18
WHT
REDG05-1
G05-3
16 [C]
I6RW0DA30002-01
[A]: ICM connector (harness side view) 5. ICM 12. To SDM
[B]: Junction block with BCM type 6. Illumination ring (if equipped) 13. To ABS control module
[C]: Junction block without BCM type 7. To BCM 14. Steering lock unit (keyless start model)
1. Battery 8. ABS control module 15. Keyless start control module (if equipped)
2. Fuse 9. DLC 16. CAN junction connector
3. Ignition switch 10. ECM 17. Combination meter
4. Junction block 11. BCM 18. Immobilizer indicator light

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-5
Component Location
Immobilizer Control System Components LocationS6RW0DA303001
Diagnostic Information and Procedures
Immobilizer Control System CheckS6RW0DA304001
3
4567
1
2
2
13
I6RW0BA30001-01
1. ECM 5. Ignition key (non keyless entry model)
2. Immobilizer indicator light 6. Ignition key (keyless start model)
3. ICM 7. Transponder
4. Ignition key (keyless entry model)
Step Action Yes No
1Immobilizer indicator light check
1) Turn ignition switch to ON position using ignition key.
Does immobilizer indicator light come on?Go to Step 2. Check if DTC P1636
and/or P1638 are
detected by ECM
referring to “DTC
Check”. If detected, go
to applicable DTC diag.
flow. If not detected, go
to “Immobilizer Indicator
Light Does Not Come
ON with Ignition Switch
ON and Engine Stop”.
2Immobilizer indicator light check
Does immobilizer indicator light flash on and off continuously
in Step 1?Check ECM for DTC
referring to “DTC
Check”. Then, go to
applicable DTC diag.
flow.Go to Step 3.
3Engine start check
1) Start engine using ignition key.
Does engine start?Go to Step 4. Go to “Engine and
Emission Control
System Check in
Section 1A”.
4Immobilizer indicator light check
1) Check if immobilizer indicator light remains ON after
engine start.
Does immobilizer indicator light remains ON after engine
start?Go to “Immobilizer
Indicator Light Remains
ON after Engine Start”.Immobilizer control
system is in good
condition. Then, go to
“Keyless Start System
Check in Section 10E”
for keyless start model.

Downloaded from www.Manualslib.com manuals search engine 10C-6 Immobilizer Control System:
DTC CheckS6RW0DA304002
NOTE
To know how to use SUZUKI scan tool in
detail, refer to its operator’s manual.

1) Turn the ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector
(DLC) (1) located under instrument panel at driver’s
seat side.
Special tool
(A): SUZUKI scan tool (SUZUKI-SDT)
3) Turn the ignition switch to ON position.
4) Read DTC according to instructions displayed on
SUZUKI scan tool and print them or write them
down. Refer to scan tool operator’s manual for
details.
If communication between scan tool and ECM is not
possible, go to “Troubleshooting for Communication
Error with Scan Tool Using CAN in Section 1A”.
5) After completing the check, turn ignition switch to
OFF position, and then disconnect SUZUKI scan
tool from DLC.
DTC ClearanceS6RW0DA304003
NOTE
To know how to use SUZUKI scan tool in
detail, refer to its operator’s manual.

1) Turn the ignition switch to OFF position,
2) Connect SUZUKI scan tool to data link connector
(DLC) (1) located under instrument panel at driver’s
seat side.
Special tool
(A): SUZUKI scan tool (SUZUKI-SDT)
3) Turn the ignition switch to ON position.
4) Clear DTC(s) according to the instructions displayed
on SUZUKI scan tool.
5) After completing the clearance, turn the ignition
switch to OFF position, and then disconnect SUZUKI
scan tool from DLC.
(A) 1I5RW0CA30002-01(A) 1I5RW0CA30002-01

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-17
Inspection of ICM and Its CircuitS6RW0DA304018
ICM and its circuit can be checked at ICM wiring connector by measuring voltage.
CAUTION!
ICM cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to ICM with
connector disconnected from it.

Voltage Check
1) Remove ICM (1) from steering lock assembly or steering lock unit referring to “ICM Removal and Installation”.
2) Connect ICM connector (2) to ICM.
3) Check voltage at each terminal.
NOTE
As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when the
ignition switch is turned to ON position.

5DTC check of BCM
1) Check BCM for DTC referring to “DTC Check in Section
10B”.
Is DTC U0073, U0100, U0101, U0155 and/or U1144
detected?Go to applicable DTC
diag. flow.Go to Step 6.
6CAN communication circuit check
1) Disconnect connectors from ECM, BCM and ABS
control module.
2) Check CAN communication circuit for open, short and
high resistance.
• Between ECM and ABS control module
• Between BCM and ABS control module
Is each CAN communication circuit in good condition?Go to Step 7. Repair circuit.
7Replacement of BCM
1) Replace BCM with new one referring to “BCM (Included
in Junction Block) Removal and Installation in Section
10B”.
2) Check ECM for DTC referring to “DTC Check”.
Is DTC P1638 still detected?Substitute a known-
good ECM and recheck.BCM faulty. Step Action Yes No
1 2 3
4
1
25
6 [A]
I6RW0BA30003-01
[A]: ICM connector (harness side view)