2006 SUZUKI SX4 IMMOBILIZER CONTROL MODULE in ECM

Downloaded from www.Manualslib.com manuals search engine 0A-1 General Information:
General Information
General Information
General Description
AbbreviationsS6RW0D0101001
A:
ABDC: After Bottom Dead Center
ABS: Anti-lock Brake System
AC: Alternating Current
A/C: Air Conditioning
A-ELR: Automatic-Emergency Locking Retractor
A/F: Air Fuel Mixture Ratio
ALR: Automatic Locking Retractor
API: American Petroleum Institute
APP sensor: Accelerator Pedal Position Sensor
A/T: Automatic Transmission, Automatic Transaxle
AT D C : After Top Dead Center
ATF: Automatic Transmission Fluid, Automatic
Transaxle Fluid
B:
B+: Battery Positive Voltage
BBDC: Before Bottom Dead Center
BCM: Body Electrical Control Module
BTDC: Before Top Dead Center
C:
CAN: Controller Area Network
CKT: Circuit
CKP Sensor: Crankshaft Position Sensor
CMP Sensor: Camshaft Position Sensor
CO: Carbon Monoxide
CPP Switch: Clutch Pedal Position Switch (Clutch
Switch, Clutch Start Switch)
CPU: Central Processing Unit
CRS: Child Restraint System
D:
DC: Direct Current
DLC: Data Link Connector (Assembly Line Diag. Link,
ALDL, Serial Data Link, SDL)
DOHC: Double Over Head Camshaft
DOJ: Double Offset Joint
DRL: Daytime Running Light
DTC: Diagnostic Trouble Code (Diagnostic Code)
E:
EBCM: Electronic Brake Control Module, ABS Control
Module
EBD: Electronic Brake Force Distribution
ECM: Engine Control Module
ECT Sensor: Engine Coolant Temperature Sensor
(Water Temp. Sensor, WTS)
EFE Heater: Early Fuel Evaporation Heater (Positive
Temperature Coefficient, PTC Heater)
EGR: Exhaust Gas Recirculation
EGRT Sensor: EGR Temperature Sensor (Recirculated
Exhaust Gas Temp. Sensor, REGTS)
EPS: Electronic Power Steering
EVAP: Evaporative Emission
EVAP Canister: Evaporative Emission Canister
(Charcoal Canister)F:
4WD: 4 Wheel Drive
G:
GEN: Generator
GND: Ground
GPS: Global Positioning System
H:
HAVC: Heating, Ventilating and Air Conditioning
HC: Hydrocarbons
HO2S: Heated Oxygen Sensor
I:
IAC Valve: Idle Air Control Valve (Idle Speed Control
Solenoid Valve, ISC Solenoid Valve)
IAT Sensor: Intake Air Temperature Sensor (Air
temperature Sensor, ATS)
ICM: Immobilizer Control Module
IG: Ignition
ISC Actuator: Idle Speed Control Actuator
L:
LH: Left Hand
LHD: Left Hand Drive vehicle
LSPV: Load Sensing Proportioning Valve
M:
MAF Sensor: Mass Air Flow Sensor (Air Flow Sensor,
AFS, Air Flow Meter, AFM)
MAP Sensor: Manifold Absolute Pressure Sensor
(Pressure Sensor, PS)
Max: Maximum
MFI: Multiport Fuel Injection (Multipoint Fuel Injection)
Min: Minimum
MIL: Malfunction Indicator Lamp (“SERVICE ENGINE
SOON” Light)
M/T: Manual Transmission, Manual Transaxle
N:
NOx: Nitrogen Oxides
O:
OBD: On-Board Diagnostic System (Self-Diagnosis
Function)
O/D: Overdrive
OHC: Over Head Camshaft
O2S: Oxygen Sensor
P:
PCM: Powertrain Control Module
PCV: Positive Crankcase Ventilation
PNP: Park / Neutral Position
P/S: Power Steering
PSP Switch: Power Steering Pressure Switch (P/S
Pressure Switch)
R:
RH: Right Hand
RHD: Right Hand Drive vehicle

Downloaded from www.Manualslib.com manuals search engine 1A-2 Engine General Information and Diagnosis:
• When checking ECM for DTC, keep in mind that DTC
is displayed on the scan tool as follows depending on
the scan tool used.
– SUZUKI scan tool displays DTC detected by ECM.
– CAN communication OBD generic scan tool
displays DTC detected by each of ECM and TCM
(for A/T model) simultaneously.
• Priorities for diagnosing troubles
If two or more DTCs are stored, proceed to the DTC
flow which has been detected earliest in the order and
follow the instruction in that flow.
If no instructions are given, troubleshoot DTCs
according to the following priorities.
a. DTCs other than DTC P0171 / P0172 (Fuel
system too lean / too rich), DTC P0300 / P0301 /
P0302 / P0303 / P0304 (Misfire detected) and
DTC P0401 / P0402 (EGR flow malfunction)
b. DTC P0171 / P0172 (Fuel system too lean / too
rich) and DTC P0401 / P0402 (EGR flow
malfunction)
c. DTC P0300 / P0301 / P0302 / P0303 / P0304
(Misfire detected)
• Be sure to read “Precautions for Electrical Circuit
Service in Section 00” before inspection and observe
what is written there.
• ECM replacement:
When substituting a known-good ECM, check for the
following conditions. Neglecting this check may cause
damage to a known-good ECM.
– Resistance value of all relays, actuators is as
specified respectively.
– MAP sensor, A/C refrigerant pressure sensor (if
equipped with A/C), accelerator pedal position
(APP) sensor and TP sensor are in good condition
and none of power circuits of these sensors is
shorted to ground.
• Communication of ECM, BCM, combination meter,
keyless start control module (if equipped with keyless
start control system), 4WD control module (if
equipped), TCM (for A/T model) and ABS control
module, is established by CAN (Controller Area
Network). (For more detail of CAN communication for
ECM, refer to “CAN Communication System
Description”). Therefore, handle CAN communication
line with care referring to “Precaution for CAN
Communication System in Section 00”.
• Immobilizer transponder code registration after
replacing ECM (Immobilizer model)
When ECM is replaced with new one or with another
one, make sure to register immobilizer transponder
code to ECM correctly according to “Procedure after
ECM Replacement in Section 10C”.Precautions for DTC TroubleshootingS6RW0D1100003
• Before performed trouble shooting, be sure to read
the “Precautions of ECM Circuit Inspection”.
• When measuring circuit voltage, resistance and/or
pulse signal at ECM connector, connect the special
tool to ECM and/or the ECM connectors referring to
“Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work,
perform “DTC Confirmation Procedure” and confirm
that the trouble has been corrected.
Precautions of ECM Circuit InspectionS6RW0D1100004
• ECM connectors are waterproofed. Each terminal of
the ECM connectors is sealed up with the grommet.
Therefore, when measuring circuit voltage, resistance
and/or pulse signal at ECM connector, do not insert
the tester’s probe into the sealed terminal at the
harness side. When measuring circuit voltage,
resistance and/or pulse signal at ECM connector,
connect the special tool to the ECM connectors. And,
insert the tester’s probe into the special tool’s
connectors at the harness side, and then measure
voltage, resistance and/or pulse signal. Or, ECM and
its circuits may be damaged by water.
• Wire colors of the special tool’s connectors are
different from the ones of the ECM connectors.
However, the circuit arrangement of the special tool’s
connectors is same as the one of the ECM
connectors. Therefore, measure circuit voltage and
resistance by identifying the terminal location subject
to the measurement.
Precautions of Electric Throttle Body System
Calibration
S6RW0D1100005
After performing one of works described below, it is
necessary to re-register the completely closed throttle
valve reference position stored in memory of ECM. (For
detailed information, refer to “Description of Electric
Throttle Body System Calibration”.) For the procedure to
register such data in ECM, refer to “Electric Throttle
Body System Calibration in Section 1C”.
• To shut off backup power of ECM for such purposes of
battery replacement or “DOME” fuse removal
• To erase DTCs P0122, P0123, P0222, P0223, P2101,
P2102, P2103, P2111, P2112, P2119 and/or P2135
• To replace ECM
• To replace throttle body and/or accelerator pedal
position (APP) sensor assembly

Downloaded from www.Manualslib.com manuals search engine 1A-8 Engine General Information and Diagnosis:
For information about the following items, refer to “Euro
OBD model: ”.
• Warm-up cycle
• Driving cycle
• 2 driving cycle detection logic
• Pending DTC
Data Link Connector (DLC)S6RW0D1101011
NOTE
There are two types of OBD system
depending on the vehicle specification.
For identification, refer to “Precaution on On-
Board Diagnostic (OBD) System”.

DLC (1) is in compliance with SAE J1962 in the shape of
connector and pin assignment.
OBD CAN Hi line (6) and Low line (3) (CAN line of ISO
15765-4) are used for SUZUKI scan tool (SUZUKI-SDT)
(7) or CAN communication OBD generic scan tool to
communicate with ECM (included in immobilizer control)
and TCM (Transmission Control Module) (for A/T
model).
Engine and Emission Control System
Description
S6RW0D1101004
The engine and emission control system is divided into 4
major sub-systems: air intake system, fuel delivery
system, electronic control system and emission control
system.
Air intake system includes air cleaner, throttle body and
intake manifold.
Fuel delivery system includes fuel pump, delivery pipe,
etc.
Electronic control system includes ECM, various sensors
and controlled devices.
Emission control system includes EGR, EVAP and PCV
system.
3. DLC
1
2 3
I5RW0C110001-01
2. B + (Unswitched vehicle battery positive)
4. ECM ground (Signal ground)
5. Vehicle body ground (Chassis ground)
2
45 6
1
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
7
3
1I7RW01110092-01

Downloaded from www.Manualslib.com manuals search engine 1A-10 Engine General Information and Diagnosis:
ECM Transmission Data
ECM Reception Data
BCM TCMCombination
Meter
DATA ECM Transmit
Brake pedal switch signal
Vehicle speed signal
Engine speed signal
Engine torque signal
Accelerator pedal position signal
4WD Control
ModuleKeyless Start
Control
Module
A/C refrigerant pressure
signal
A/C compressor clutch signal
Engine type signal
Immobilizer indicator light control
signal
MIL control signal
Engine coolant temperature signal
Fuel level signal
Fuel consumption signal
Throttle position signal
Driving cycle active
Warm up cycle active
Odometer signal
I6RW0D110003-02
DATA ECM Receive
ABS control
module
Transmission oil temperature signal
Transmission warning light signal Vehicle speed pulse signal A/T selector lever position signal
Transmission actual gear position signal
Wheel speed signal (front right)
Wheel speed signal (front left)
ABS indication signal
A/C switch ON signal
Electric load signalBCM
4WD mode status
Torque request signalTCM
MIL control signal4WD control
module
I6RW0D110013-02

Downloaded from www.Manualslib.com manuals search engine 1A-12 Engine General Information and Diagnosis:
Operation Description
ECM (5) detects opening (depressed extent of pedal) of the accelerator pedal based on signal voltage of the APP
sensor (1) and using that data and engine operation condition, it calculates the optimum throttle valve opening. On the
other hand, it detects the throttle valve opening based on the signal voltage of the throttle position sensor (3) included
in the throttle body (2) and compares it with the above calculated optimum throttle valve opening. When there is a
difference between them, ECM controls the duty ratio (100% – 0%) according to this difference to drive the throttle
actuator (motor) (4) included in the throttle body. When there is no difference, ECM controls the duty ratio to about
15% to maintain the throttle valve opening. In this way, the throttle valve (17) is opened and closed to achieve the
optimum throttle valve opening.
In this system, as the throttle position sensor and APP sensor have 2 sensors (main and sub) each, highly accurate
and highly reliable control and abnormality detection are assured. Also, when ECM detects an abnormality in the
system, it turns off the throttle actuator control relay (8) to stop controlling the throttle actuator. When the throttle
actuator control relay is turned off, the throttle valve is fixed at the opening of about 7° from its completely closed
position (default opening) by the force of the return spring and open spring included in the throttle body.
This throttle body is not equipped with IAC valve for idle speed control. Idle speed control is done by the throttle
actuator which opens/closes the throttle valve.
Electronic Control System Description
The electronic control system consists of 1) various
sensors which detect the state of engine and driving
conditions, 2) ECM which controls various devices
according to the signals from the sensors and 3) various
controlled devices.
Functionally, it is divided into the following sub systems:
• Fuel injection control system
• Ignition control system
• Electric throttle body control system
• Fuel pump control system
• Radiator cooling fan control system
• Evaporative emission control system
• EGR system (if equipped)
• Oxygen sensor heater control system• A/C control system (if equipped with A/C)
• Camshaft position control system
• Immobilizer control system
• Controller (computer) communication system
Especially, ECM (Engine Control Module), BCM (Body
electrical Control Module), combination meter, ABS /
control module, keyless start control module (if equipped
with keyless start control system), TCM (Transmission
Control Module) (for A/T model) and 4WD control
module (if equipped) intercommunicate by means of
CAN (Controller Area Network) communication.
4 12
1735
6
7 8
9
10
11
12
13
14
1516
18
I4RS0B110007-02
6. CPU 11. APP sensor (main) signal 15. Drive signal of throttle actuator
7. Drive circuit of throttle actuator 12. APP sensor (sub) signal 16. Power supply of throttle actuator
9. From “THR MOT” fuse 13. Throttle position sensor (main) signal 18. Control signal of throttle actuator control relay
10. From main relay 14. Throttle position sensor (sub) signal

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-13
Engine and Emission Control System Flow Diagram
Intake manifoldExhaust
manifold
Exhaust gas Air
Fuel Vapor
War m up
catalystExhaust
pipe
EVAP canister
purge valve
Fuel injector
ECT
sensor
ECM
Heater
control
Heater
control
(if equipped)
Barometric pressure sensor HO2S-1HO2S-2
(if equipped) Engine
CMP
sensorCKP
sensor
Knock
sensorIgnition
coil with
igniter
APP sensor
A/C compressor
clutch
Generator
Immobilizer
coil antenna
P/S control
module
Brake light
switch
Air cleaner
IAT
sensorMAF
sensor
A/C refrigerant
pressure sensor
TP
sensor Throttle body
assembly
Throttle
actuator
A/C condenser
fan
DLC
Radiator
fan
Combination meter
· MIL
· Coolant Temp.
· Immobilizer indicator light
· Tachometer
· Speedometer
· Fuel level
· Odometer4WD
control module
Wheel speed
sensor (VSS)
(M/T)
· Electric load
· A/C switch ON
BCM
Keyless start
control module
ABS control module
Blower speed
selector
MAP sensor
(if equipped)EGR valve
(if equipped)
Check
valve
EVAP
canister
Fuel level sensorFuel tankFuel
pump
CMP actuator
oil control valve
(VVT model)
TCM
Output shaft speed
(VSS) sensor (A/T)
Three way
catalyst (if
equipped)
I6RW0D110004-03

Downloaded from www.Manualslib.com manuals search engine 1A-14 Engine General Information and Diagnosis:
ECM Input / Output Circuit Diagram
51 50
+B
54
IG1+BB
ST64
65
67
BLK/WHTWHT/RED
BRN/WHTBLK/RED
BLK/RED
57
: 71
: 72 : 5V : 12V68 IG1
BLK
WHT
GRY
YEL/GRNWHT
66
58
61
62
63 55
70
60 59
53
WHT
4+B
5
PNK
RED/YEL
BLK/ORN
C01-20
C01-21
8RED62C01-56
13WHT/BLKE01-57
ORNE01-54
21
23WHTRED
WHTRED
22
E01-3E01-18
C01-13C01-12
YEL/RED 24E01-24
YEL/BLK
YEL/RED 25E01-28E01-13
E01-30
E01-16
E01-60E01-1
E01-29
GRN/WHTE01-20
C01-48
E01-2
GRN/YEL47
48
GRN/WHTC01-5
C01-6
44
45RED/BLKE01-58
42
43GRY46E01-47
40LT GRN41BLU/REDE01-46
38
39
PNKBLKGRN/WHTE01-15
GRN/REDGRN/WHT37YELREDC01-59C01-60
35BLU/BLKC01-29
31
32
33
34BLU/YELBLU/WHT
BLU/REDBLU/ORNC01-17C01-16
C01-1C01-2
BLK/ORNBLKC01-30
C01-58C01-15
E01-31BLKBLK
49RED/BLU
BRNE01-4
E01-26 9
GRY
BLK/YELGRY/BLU
GRN/BLKC01-26C01-27
C01-25 +B
IG16
7WHT
BRNRED/BLU
BLK/WHT
3 3
ORN
BLK/RED
C01-57
C01-10
C01-11
C01-46
C01-47
GRY/REDC01-14
11LT GRNGRY/BLUGRY/BLU12RED/BLU
C01-55
E01-55
C01-24
10
RED/BLKGRY/BLUC01-53
IG2
IG2
69RED/WHTC01-52
26
RED
BRNGRN
BLU
GRN
WHTBLK
28
30 2927
3YEL
GRYC01-41C01-42C01-40
C01-43C01-44
C01-45
E01-45E01-32
C01-54
BRN/YELWHT/RED
GRN/REDGRN/ORN
C01-18C01-1936C01-3C01-4
56
1
52
IG2+BB
BLU/WHT
BLU/WHT
14
15
17
16
E01-19
E01-19
18
19
BRNGRNBLU
REDYELWHT
E01-353
BLK
E01-37E01-52
E01-34E01-36E01-51
E01-50
2
20BLU/YELC01-28
I6RW0D110005-03
1. ECM 25. Immobilizer coil antenna 49. P/S control module
2. APP sensor assembly 26. Throttle actuator control relay 50. Brake light
3. Shield wire 27. “THR MOT” fuse 51. Brake light switch
4. CMP sensor 28. Electric throttle body assembly 52. To ABS control module
5. CKP sensor 29. Throttle actuator 53. “STOP” fuse
6. HO2S-1 30. TP sensor 54. Main relay

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-17
Connector: E01
Terminal Wire color Circuit Terminal Wire color Circuit
1 BLK/RED Main power supply 31 BLK Ground for ECM
2WHT/REDPower source for ECM internal
memory32 GRNPower supply of throttle
actuator drive circuit.
3REDCAN communication line (active
high signal) to ABS control
module assembly33 — —
4BRNEngine revolution signal output
for EPS control module34 REDOutput for 5 V power source of
APP sensor (sub)
5— — 35BRNOutput for 5 V power source of
APP sensor (main)
6 — — 36 YEL APP sensor (sub) signal
7 — — 37 GRN APP sensor (main) signal
8— — 38— —
9— — 39— —
10 — — 40 — —
11 — — 4 1 — —
12 — — 42 — —
13 YEL/REDClock signal for immobilizer coil
antenna43 — —
14 — — 44 — —
15 GRN/WHT Fuel pump relay output 45 BRNThrottle actuator control relay
output
16 BLK/RED Main power supply 46 LT GRNRadiator cooling fan relay
output
17 — — 47 GRYA/C compressor relay output
(if equipped with A/C)
18 WHTCAN communication line (active
low signal) to ABS control
module assembly48 — —
19 BLU/WHTElectric load signal for heater
blower motor49 — —
20 GRN/WHT Brake light switch signal 50 BLKGround for shield wire of APP
sensor
21 — — 51 WHTGround for APP sensor (sub)
signal
22 — — 52 BLUGround for APP sensor (main)
signal
23 — — 53 — —
24 YEL/RED Fuel level sensor signal 54 ORN Ground for sensors
25 — — 55 RED/BLUA/C refrigerant pressure
sensor signal
(if equipped with A/C)
26 RED/BLU EPS signal 56 WHT/GRN —
27 — — 57 WHT/BLKA/C evaporator outlet air temp.
sensor signal
(if equipped with A/C)
28 YEL/BLKSerial communication line for
immobilizer coil antenna58 RED/BLK —
29 BLK/WHT Ignition switch signal 59 — —
30 WHTStarting motor control relay
output60 BRN/WHT Main power supply relay output