IMMOBILIZER CONTROL MODULE in ECM SUZUKI SX4 2006 1.G Service User Guide

Downloaded from www.Manualslib.com manuals search engine Steering Wheel and Column: 6B-8
3) Align flat part “a” of steering lower shaft (1) with bolt
hole “b” of shaft joint (2) of column as shown. Then
insert lower shaft into shaft joint of steering column.
4) Tighten lower shaft upper joint bolt (3) to specified
torque.
CAUTION!
After tightening column nuts, tighten steering
shaft upper joint bolt. Otherwise, shaft joint
bearing is damaged.

Tightening torque
Steering lower shaft assembly upper joint bolt
(a): 25 N·m (2.5 kgf-m, 18.5 lb-ft)
5) Install lighting switch and wiper switch to steering
column.
6) (Immobilizer model)
Install immobilizer control module from steering
column, referring to “ICM Removal and Installation in
Section 10C”.
7) Install contact coil cable assembly and steering
wheel referring to “Contact Coil Cable Assembly
Removal and Installation” and “Steering Wheel
Removal and Installation”.
8) Connect negative (–) cable to battery.
9) Enable air bag system referring to “Enabling Air Bag
System in Section 8B”.
Steering Column InspectionS6RW0D6206009
Check steering column for damage and operation
referring to “Checking Steering Column for Accident
Damage”.
Ignition Switch Cylinder Assembly Removal
and Installation (Non- Keyless Start Model)
S6RW0D6206010
Removal
1) Disconnect negative (–) cable at battery.
2) Disable air bag system referring to “Disabling Air
Bag System in Section 8B”.
3) Remove steering column upper and lower covers.
4) (Immobilizer model)
Remove immobilizer control module referring to
“ICM Removal and Installation in Section 10C”.
5) Remove ignition switch cylinder assembly as follows.
a) Turn ignition key to “ACC” position.
b) Insert 2 mm (0.078 in.) rod (2) through hole (3)
and push ignition switch cylinder lock.
c) Detach ignition switch cylinder assembly (1) from
steering lock assembly (4).
Installation
1) Install ignition switch cylinder assembly as follows.
a) Turn ignition key to “ACC” position.
b) In this state, push ignition switch cylinder
assembly into steering lock assembly till it clicks.
2) (Immobilizer model)
Install immobilizer control module referring to “ICM
Removal and Installation in Section 10C”.
3) Install upper and lower cover and screws.
4) Connect negative (–) cable to battery.
5) Enabling air bag system referring to “Enabling Air
Bag System in Section 8B”.
6) (Immobilizer model)
If ignition switch cylinder assembly (that is ignition
key) has replaced, register ignition key transponder
code to ECM referring to “Registration of the Ignition
Key in Section 10C”.
1 2
“a”“b”
3, (a)
I5RW0A620007-01
2
3
1
4
I5JB0A620025-01

Downloaded from www.Manualslib.com manuals search engine 6B-9 Steering Wheel and Column:
Steering Lock Assembly (Ignition Switch)
Removal and Installation
S6RW0D6206011
Removal
1) Remove steering column. Refer to “Steering Column
Removal and Installation”.
2) Using center punch (1), loosen and remove steering
lock mounting bolts (2).
NOTE
Use care not to damage aluminum part of
steering lock body with center punch.

3) Turn ignition key to “ACC” or “ON” position and
remove steering lock assembly from steering
column.Installation
1) Position oblong hole (1) of steering shaft (2) in the
center of hole (3) in column (4).
2) Turn ignition key to “ACC” or “ON” position and
install steering lock assembly (5) onto column (4).
3) Now turn ignition key to “LOCK” position and pull it
out.
4) Align hub on lock with oblong hole (1) of steering
shaft (2) and rotate shaft to assure that steering shaft
is locked.
5) Tighten new bolts (1) until head of each bolt is
broken off.
6) Turn ignition key to “ACC” or “ON” position and
check to be sure that steering shaft (2) rotates
smoothly. Also check for lock operation.
7) Install steering column. Refer to “Steering Column
Removal and Installation”.
8) (Keyless start model)
If steering lock assembly has replaced, after
completing installation, register steering lock unit ID
code to keyless start control module as following.
• Immobilizer model:
Register ignition key transponder code in ECM
referring to “Registration of the Ignition Key in
Section 10C”.
• Non-immobilizer model:
Register steering lock unit ID code in keyless start
control module referring to “Keyless Start
Registration in Section 10E”.
I4RS0B620005-02
1
32
4
5
I4RS0B620006-02
I4RS0B620007-02

Downloaded from www.Manualslib.com manuals search engine 9C-2 Instrumentation / Driver Info. / Horn:
Combination Meter Reception Data
ECM BCM
Keyless
Start
Control
Module
(if equipped)
Combination
Meter4WD
Control
Module
(if equipped)TCM
(A/T
model)
Engine speed signal
Immobilizer indicator light control signal
Vehicle speed signal
Engine coolant temperature signal
Fuel level signal
MIL control signal
Transmission range sensor signal
Transmission warning light signal
Diagnostic trouble code (DTC)
Brake fluid level switch signal
(brake warning light control signal)
Driver side seat belt buckle switch signal
(seat belt reminder light control signal)
Charging system warning light signal
(charge warning light control signal)
Engine oil pressure switch signal
(oil pressure warning light control signal)
Parking brake switch signal
(brake warning light control signal)
Illumination ON signal
Door switch signal
(open door warning light control signal)
ABS indication signal
EBD indication signal
(brake warning light control signal)
4WD mode indicator control signal
Key indicator light control signal
ABS
Control
Module
Odometer signal
DATA
Recive
I6RW0D930001-01

Downloaded from www.Manualslib.com manuals search engine Table of Contents 10- i
10
Section 10
CONTENTS
Control Systems
Precautions ............................................... 10-1
Precautions........................................................... 10-1
Precautions for Control Systems......................... 10-1
Body Electrical Control System ........... 10B-1
Precautions......................................................... 10B-1
Precautions in Diagnosing Trouble ................... 10B-1
General Description ........................................... 10B-1
BCM General Description ................................. 10B-1
CAN Communication System Description......... 10B-1
Theft Deterrent Light ......................................... 10B-2
Security Alarm Description (If Equipped) .......... 10B-2
Schematic and Routing Diagram ...................... 10B-3
Body Electrical Control System Wiring Circuit
Diagram .......................................................... 10B-3
Connector Layout Diagram of BCM and
Junction Block ................................................. 10B-6
Component Location ......................................... 10B-7
BCM and Related System Component
Location .......................................................... 10B-7
Diagnostic Information and Procedures .......... 10B-8
BCM Self-Diagnosis Function ........................... 10B-8
Body Electrical Control System Check.............. 10B-9
Scan Tool Data ............................................... 10B-11
DTC Table ....................................................... 10B-13
DTC Check ..................................................... 10B-14
DTC Clearance ............................................... 10B-15
BCM Power Circuit and Ground Circuit Check 10B-16
DTC B1133 (DTC No. 1133): Battery Voltage
Too High ....................................................... 10B-17
DTC B1141 / DTC B1142 (No. 1141 / No.
1142) Outside Air Temperature (Ambient
Temp.) Sensor Circuit Malfunction ................ 10B-18
DTC B1150 (No. 1150): Air Bag
Communication Circuit Malfunction .............. 10B-19
DTC B1157 (No. 1157) Air Bag Deployment
Signal Input ................................................... 10B-20
DTC B1170 (No. 1170): EEPROM Access
Error .............................................................. 10B-20
DTC U0073 (No. 0073): Control Module
Communication Bus Off ................................ 10B-20
DTC U0100 (No. 0100): Lost Communication
with ECM....................................................... 10B-20DTC U0101 (No. 0101): Lost Communication
with TCM ....................................................... 10B-20
DTC U0155 (No. 0155): Lost Communication
with Instrument Panel Cluster (IPC) Control
Module .......................................................... 10B-20
DTC U1144 (No. 1144): Lost Communication
with Keyless Start Control Module ................ 10B-20
Inspection of BCM and Its Circuits .................. 10B-21
Repair Instructions ..........................................10B-28
BCM (Included in Junction Block) Removal
and Installation .............................................. 10B-28
Security Alarm Mode Selection Procedure (If
Equipped) ...................................................... 10B-29
Outside Air Temperature Sensor Removal
and Installation .............................................. 10B-29
Outside Air Temperature Sensor Inspection ... 10B-29
Special Tools and Equipment .........................10B-29
Special Tool .................................................... 10B-29
Immobilizer Control System ................. 10C-1
Precautions.........................................................10C-1
Precautions in Diagnosing Troubles .................10C-1
Precaution in Replacing ECM ...........................10C-1
Precaution in Replacing Ignition Key ................10C-1
Precautions in Handling Immobilizer Control
System ............................................................10C-1
General Description ...........................................10C-2
Immobilizer Control System Introduction ..........10C-2
On-Board Diagnostic System Description
(Self-diagnosis Function)................................10C-2
Schematic and Routing Diagram ......................10C-3
Immobilizer Control System Wiring Circuit
Diagram...........................................................10C-3
Component Location .........................................10C-5
Immobilizer Control System Components
Location...........................................................10C-5
Diagnostic Information and Procedures ..........10C-5
Immobilizer Control System Check ...................10C-5
DTC Check........................................................10C-6
DTC Clearance .................................................10C-6
DTC Table .........................................................10C-7
Scan Tool Data .................................................10C-8
Immobilizer Indicator Light Does Not Come
ON with Ignition Switch ON and Engine Stop ..10C-9

Downloaded from www.Manualslib.com manuals search engine 10-ii Table of Contents
Immobilizer Indicator Light Remains ON after
Engine Start ..................................................10C-10
DTC P1614: Transponder Response Error .....10C-10
DTC P1615: Steering Lock Unit
Communication Error ....................................10C-11
DTC P1616: Unregistered Keyless Start
Control Module ..............................................10C-12
DTC P1618: Keyless Start Control Module
CAN Communication Error............................10C-13
DTC P1621: Immobilizer Communication
Line Error ......................................................10C-13
DTC P1622: EEPROM Reading / Writing
Error ..............................................................10C-14
DTC P1623: Unregistered Transponder .........10C-14
DTC P1625: Immobilizer Antenna Error..........10C-15
DTC P1636: Immobilizer Information
Registration Failure .......................................10C-15
DTC P1638: Immobilizer Information
Mismatched ...................................................10C-16
Inspection of ICM and Its Circuit .....................10C-17
Repair Instructions ..........................................10C-19
ICM Removal and Installation .........................10C-19
Registration of the Ignition Key .......................10C-19
Procedure after ECM Replacement ................10C-19
Special Tools and Equipment .........................10C-20
Special Tool ....................................................10C-20
Keyless Start System .............................10E-1
General Description ........................................... 10E-1
Keyless Start System Description ..................... 10E-1
Parts and Functions .......................................... 10E-2
Keyless Engine Start Function .......................... 10E-3
Door Lock Function of Keyless Start System .... 10E-4
Operation Area of Remote Controller................ 10E-5
Alarm Function .................................................. 10E-6
CAN Communication System Description......... 10E-6
Schematic and Routing Diagram ...................... 10E-7
Keyless Start System Electric Wiring Circuit
Diagram .......................................................... 10E-7
Diagnostic Information and Procedures .......... 10E-8
Precautions in Diagnosing Troubles ................. 10E-8
Self-Diagnosis Function .................................... 10E-8
Keyless Start System Diagnosis Introduction ... 10E-8
Keyless Start System Check ............................. 10E-9
Customer Questionnaire (Example) ................ 10E-10Key Indicator Light Check ............................... 10E-10
DTC Check...................................................... 10E-11
DTC Table ....................................................... 10E-12
DTC Clearance ............................................... 10E-12
Keyless Start System Symptom Diagnosis ..... 10E-13
Keyless Start System Operation Inspection .... 10E-14
Door Lock Operation (Keyless Start System) . 10E-14
Inspection of Keyless Start Control Module
and Its Circuits .............................................. 10E-14
No DTC Detection After Performing DTC
Check ............................................................ 10E-20
Key Indicator Light Circuit Check (Key
Indicator Light Doesn’t Light when Ignition
Knob Switch is Pushed) ................................ 10E-21
Keyless Start Control Module Power and
Ground Circuit Check .................................... 10E-23
DTC No. 11: Communication Error with
Steering Lock Unit ......................................... 10E-24
DTC No. 13 / No. 14: Release Signal Error
from Steering Lock Unit / Steering Lock Unit
Malfunction .................................................... 10E-25
DTC No. 21 / No. 22: Internal Error of Keyless
Start Control Module (EEPROM Reading
Error) / (EEPROM Writing Error) ................... 10E-25
DTC No. 31: Lost Communication with BCM .. 10E-26
DTC No. 33: Control Module Communication
Bus Off .......................................................... 10E-26
DTC No. 51 / No. 52 / No. 53: Driver Side /
Passenger Side / Rear End Door Request
Switch Failure................................................ 10E-26
Repair Instructions .......................................... 10E-27
Antennas and Request Switches Removal
and Installation .............................................. 10E-27
Front Door (Driver and Passenger Side), Rear
End Door Request Switch Inspection............ 10E-28
Steering Lock Unit Removal and Installation .. 10E-28
Steering Lock Unit Inspection ......................... 10E-28
Front Door Lock Switch Inspection ................. 10E-28
Keyless Start Control Module Removal and
Installation ..................................................... 10E-29
Remote Controller Inspection.......................... 10E-29
Replacement of Remote Controller Battery .... 10E-29
Registration Procedure for Remote Controller
ID Code ......................................................... 10E-30
Keyless Start Registration ............................... 10E-31

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 Immobilizer Control System: 10C-3
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-7
DTC TableS6RW0DA304004
ECM
NOTE
ECM detects DTC. ICM does not.

NOTE
If any DTC other than the above DTCs is detected, refer to “DTC Table in Section 1A”.

DTC No. Detecting Item Detecting ConditionImmobilizer
Indicator
Light
) P1614 Transponder response errorTransponder code in transponder built in
ignition key cannot be read through ICM.Flash
) P1615 Steering lock unit communication error• While registering the transponder code in
the transponder built in the ignition key in
ECM, the keyless start control module sent
a signal to ECM indicating that the ID code
could not be registered.
• The ID code could not be registered in the
keyless start control module or ECM.Flash
) P1616 Unregistered keyless start control moduleECM detects different ID codes registered in
ECM and keyless start control module.Flash
) P1618Keyless start control module CAN
communication errorReception error of communication data for
keyless start control module is detected for
longer than specified time continuously.Flash
) P1621 Immobilizer communication line error Communication error between ICM and ECM. Flash
) P1622 EEPROM reading / writing error EEPROM in ECM is corrupted. Flash
) P1623 Unregistered transponderTransponder code in the transponder built in
the ignition key is invalid.Flash
) P1625 Immobilizer antenna error ICM is faulty. Flash
) P1636Immobilizer information registration
failureCommunication error between ECM and BCM. No operation
) P1638 Immobilizer information mismatched• Communication error between ECM and
BCM.
• Wrong ECM or BCM is used.No operation

Downloaded from www.Manualslib.com manuals search engine 10C-10 Immobilizer Control System:
Immobilizer Indicator Light Remains ON after Engine StartS6RW0DA304007
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Circuit Description
Refer to “Immobilizer Indicator Light Does Not Come ON with Ignition Switch ON and Engine Stop”.
Troubleshooting
DTC P1614: Transponder Response ErrorS6RW0DA304008
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Detecting Condition and Trouble Area
TroubleshootingStep Action Yes No
1DTC check of ECM
1) Check ECM for DTC referring to “DTC Check in Section
1A”.
Is DTC detected?Go to applicable DTC
diag. flow.Go to Step 2.
2CAN communication circuit check
1) Disconnect connectors from ECM, BCM, ABS control
module and combination meter.
2) Check CAN communication circuit for open, short and
high resistance.
• Between ECM and ABS control module
• Between BCM and ABS control module
• Between BCM and combination meter
Is each CAN communication circuit in good condition?Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
light still remains ON,
substitute a known-
good ECM and recheck.Repair circuit.
Detecting Condition Trouble Area
Transponder code in transponder built in ignition key
cannot be read through ICM.• Use of ignition key without transponder
• Use of unregistered ignition key
• Corruption of transponder in ignition key
•ICM
•ECM
Step Action Yes No
1Was “Immobilizer Control System Check” performed?Go to Step 2. Go to “Immobilizer
Control System Check”.
2DTC check of ECM
1) Check if any DTC other than P1614 is detected referring
to “DTC Check”.
Is DTC other than P1614 detected?Go to applicable DTC
diag. flow.Go to Step 3.
3Registration of ignition key in use with ECM
1) Register ignition key in use with ECM referring to
“Registration of the Ignition Key”.
Was registration of ignition key completed?Recheck DTC. Go to Step 4.
4Registration of the spare ignition key
1) Register the spare ignition key with ECM referring to
“Registration of the Ignition Key”.
Was registration of spare ignition key completed?Replace ignition key
which can not be
registered.Substitute a known-
good ECM and recheck.