2006 SUZUKI SX4 battery

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-1
Engine
Engine General Information and Diagnosis
Precautions
Precautions on Engine ServiceS6RW0D1100001
CAUTION!
The following information on engine service
should be noted carefully, as it is important in
preventing damage, and in contributing to
reliable engine performance.

• When raising or supporting engine for any reason, do
not use a jack under oil pan. Due to small clearance
between oil pan and oil pump strainer, jacking against
oil pan may cause it to be bent against strainer,
resulting in damaged oil pick-up unit.
• It should be kept in mind, while working on engine,
that 12-volt electrical system is capable of violent and
damaging short circuits.
When performing any work where electrical terminals
can be grounded, ground cable of the battery should
be disconnected at battery.
• Any time the air cleaner, throttle body or intake
manifold is removed, the intake opening should be
covered. This will protect against accidental entrance
of foreign material which could follow intake passage
into cylinder and cause extensive damage when
engine is started.
Precaution on On-Board Diagnostic (OBD)
System
S6RW0D1100006
There are two types of On-Board Diagnostic (OBD)
system, Euro OBD system and non-Euro-OBD system,
depending on the vehicle specification.
It is possible to identify each OBD system by checking if
it is equipped with the HO2S-2 or not.
• Euro OBD model is equipped with HO2S-2.
• Non-Euro-OBD model is not equipped with HO2S-2.
NOTE
For Taiwan model, bear in mind that it is non-
Euro-OBD model which is equipped with
HO2S-2.

As the diagnosis function is different between these two
types, be sure to fully understand the OBD system
referring to “On-Board Diagnostic System Description”.
OBD System Summary Table
Precautions in Diagnosing TroubleS6RW0D1100002
NOTE
There are two types of OBD system
depending on the vehicle specification.
For identification, refer to “Precaution on On-
Board Diagnostic (OBD) System”.

• Don’t disconnect ECM couplers from ECM, battery
cable from battery, ECM ground wire harness from
engine or main fuse before confirming diagnostic
information (DTC, freeze frame data, etc.) stored in
ECM memory. Such disconnection will erase
memorized information in ECM memory.
• Diagnostic information stored in ECM memory can be
cleared as well as checked by using SUZUKI scan
tool or CAN communication OBD generic scan tool.
Before using scan tool, read its Operator’s
(Instruction) Manual carefully to have good
understanding as to what functions are available and
how to use it.
For Euro OBD model, it is indistinguishable which
module turns on MIL because not only ECM but also
TCM (for A/T model) turns on MIL (for details of on-
board diagnostic system for A/T model, refer to “On-
Board Diagnostic System Description in Section 5A”
for A/T).
Therefore, check both ECM and TCM (for A/T model)
for DTC when MIL lights on.
IYSQ01110001-01
Euro OBD
model (with
HO2S-2)Non-Euro-OBD
model (without
HO2S-2)
Quantity of DTC
related to engine
controlApprox. 100 Approx. 50 to 80
Freeze frame
dataAvailable Not available
SUZUKI scan tool
(SUZUKI- SDT)Available Available
CAN
communication
OBD generic
scan toolAvailable Not available

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 Engine General Information and Diagnosis: 1A-5
General Description
Statement on Cleanliness and CareS6RW0D1101001
An automobile engine is a combination of many
machined, honed, polished and lapped surfaces with
tolerances that are measured in the thousands of an
millimeter (ten thousands of an inch).
Accordingly, when any internal engine parts are
serviced, care and cleanliness are important.
It should be understood that proper cleaning and
protection of machined surfaces and friction areas is part
of the repair procedure. This is considered standard
shop practice even if not specifically stated.
• A liberal coating of engine oil should be applied to
friction areas during assembly to protect and lubricate
the surfaces on initial operation.
• Whenever valve train components, pistons, piston
rings, connecting rods, rod bearings, and crankshaft
journal bearings are removed for service, they should
be retained in order.
At the time of installation, they should be installed in
the same locations and with the same mating
surfaces as when removed.
• Battery cables should be disconnected before any
major work is performed on the engine.
Failure to disconnect cables may result in damage to
wire harness or other electrical parts.
• The four cylinders of the engine are identified by
numbers; No.1 (1), No.2 (2), No.3 (3) and No.4 (4)
counted from crankshaft pulley side to flywheel side.
Engine Diagnosis General DescriptionS6RW0D1101002
NOTE
There are two types of OBD system
depending on the vehicle specification.
For identification, refer to “Precaution on On-
Board Diagnostic (OBD) System”.

This vehicle is equipped with an engine and emission
control system which are under control of ECM.
The engine and emission control system in this vehicle
are controlled by ECM. ECM has an On-Board
Diagnostic system which detects a malfunction in this
system and abnormality of those parts that influence the
engine exhaust emission. When diagnosing engine
troubles, be sure to have full understanding of the outline
of “On-Board Diagnostic System Description” and each
item in “Precautions in Diagnosing Trouble” and execute
diagnosis according to “Engine and Emission Control
System Check”.
There is a close relationship between the engine
mechanical, engine cooling system, ignition system,
exhaust system, etc. and the engine and emission
control system in their structure and operation. In case of
an engine trouble, even when the malfunction indicator
lamp (MIL) doesn’t turn ON, it should be diagnosed
according to “Engine and Emission Control System
Check”.
On-Board Diagnostic System DescriptionS6RW0D1101003
NOTE
There are two types of OBD system
depending on the vehicle specification.
For identification, refer to “Precaution on On-
Board Diagnostic (OBD) System”.

Euro OBD model
ECM in this vehicle has the following functions.
• When the ignition switch is turned ON with the engine
at a stop, malfunction indicator lamp (MIL) (1) turns
ON to check the circuit of the malfunction indicator
lamp (1).
• When ECM detects a malfunction which gives an
adverse effect to vehicle emission while the engine is
running, it makes the malfunction indicator lamp (1) in
the meter cluster of the instrument panel turn ON or
flash (flashing only when detecting a misfire which
can cause damage to the catalyst) and stores the
malfunction area in its memory.
(If it detects that continuously 3 driving cycles are
normal after detecting a malfunction, however, it
makes MIL (1) turn OFF although DTC stored in its
memory will remain.)
1
234
I3RM0A110001-01

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 Engine General Information and Diagnosis: 1A-15
Terminal Arrangement of ECM Coupler (Viewed from Harness Side)
7. HO2S-2 (if equipped) 31. Fuel injector No.1 55. Starting motor control relay
8. Knock sensor 32. Fuel injector No.2 56. Transmission range switch (A/T
model)
9. MAF and IAT sensor 33. Fuel injector No.3 57. Starting motor
10. MAP sensor (if equipped) 34. Fuel injector No.4 58. “DOME” fuse
11. ECT sensor 35. EVAP canister purge valve 59. “IG COIL” fuse
12. A/C refrigerant pressure sensor 36. EGR valve (if equipped) 60. “IG2 SIG” fuse
13. A/C evaporator outlet air temp. sensor (Manual A/C
model)37. Oil control valve (Camshaft position control) (VVT
model)61. “FI” fuse
14. Blower motor relay 38. Fuel pump relay 62. “ST SIG” fuse
15. Blower motor 39. Fuel pump 63. “ST” fuse
16. Blower speed selector (Auto A/C model) 40. Radiator cooling fan motor relay 64. Ignition switch
17. Blower speed selector (Manual A/C model) 41. Radiator cooling fan motor 65. “IGN” fuse
18. A/C switch 42. A/C compressor relay 66. “RDTR” fuse
19. To BCM 43. A/C compressor 67. Main fuse box
20. Generator 44. A/C condenser cooling fan motor relay 68. Battery
21. ABS control module 45. A/C condenser cooling fan motor 69. Shield ground
22. TCM 46. A/C fuse 70. Barometric pressure sensor
23. To other control module and DLC connected CAN 47. Ignition coil assembly (for No.1 and No.4 spark plugs) 71. Engine ground
24. Fuel level sensor 48. Ignition coil assembly (for No.2 and No.3 spark plugs) 72. Body ground
E01C01
3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238 3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238
I6RW0D110014-01

Downloaded from www.Manualslib.com manuals search engine 1A-20 Engine General Information and Diagnosis:
1. Air cleaner 17. Radiator cooling fan 33. A/C switch (A/C model)
2. EVAP canister purge valve 18. A/C condenser cooling fan 34. A/C evaporator outlet air temp. sensor (manual A/C
model)
3. MAF and IAT sensor 19. Combination meter 35. Immobilizer coil antenna
4. TP sensor 20. BCM 36. Main relay
5. MAP sensor (if equipped) 21. Ignition switch37. Wheel speed sensor (VSS) (for M/T model)
6. EGR valve (if equipped) 22. Starter magnetic switch 38. Oil control valve
7. EVAP canister 23. Heated oxygen sensor (HO2S)-2 (if
equipped)39. ABS control module
8. Tank pressure control valve (built-in fuel pump) 24. DLC 40. Starting motor control relay
9. Fuel pump (with pressure regulator) 25. Electric load 41. A/C refrigerant pressure sensor (A/C model)
10. Ignition coil assembly 26. Fuel level sensor 42. APP sensor
11. Fuel injector 27. Brake light 43. Throttle actuator control relay
12. Heated oxygen sensor (HO2S)-1 28. Brake light switch 44. Throttle actuator
13. Knock sensor 29. ECM 45. TCM (for A/T model)
14. ECT sensor 30. Barometric pressure sensor 46. Output shaft speed sensor (VSS) (for A/T model)
15. CMP sensor 31. Battery
16. CKP sensor 32. A/C compressor relay (A/C model)

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-21
Component Location
Electronic Control System Components LocationS6RW0D1103001
NOTE
The figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are installed
at the opposite side.

H*E*
10
D
G* C
6A
B*
e
3*
12*
a8 13
b
1
5-1
d
2
11
g
4
7
9
i
j
Fh k f
n
c J
5
K*
14
I6RW0D110016-03
Information sensors Control devices Others
1. MAF and IAT sensor a: Fuel injector A: ECM
2. Electric throttle body assembly
(built-in throttle position sensor and throttle
actuator)b: EVAP canister purge valve B: Combination meter
3. Brake light switch c: Fuel pump relay C: EVAP canister
4. ECT sensor d: EGR valve (if equipped) D: A/C evaporator outlet air temp. sensor
(if equipped with A/C)
5. Heated oxygen sensor-1 e: Malfunction indicator lamp E: Data link connector
5-1. Heated oxygen sensor-2 (if equipped) f: Radiator cooling fan relay F: A/C compressor relay (if equipped with A/C)
6. Battery g: Ignition coil assembly (with ignitor) G: BCM (included in junction block assembly)
7. CMP sensor (for engine with VVT system) h: Main relay H: Immobilizer coil antenna
8. MAP sensor (if equipped) i: Oil control valve (for engine with VVT system) J: A/C refrigerant pressure sensor
(if equipped with A/C)
9. CKP sensor j: A/C condenser cooling fan relay K: TCM (for A/T model)
10. Fuel level sensor k: Starting motor control relay
11. Knock sensor m: Immobilizer indicator lamp
12. APP sensor n: Throttle actuator control relay
13. Front wheel speed sensor (RH, LH) (VSS)
14. CMP sensor (for engine without VVT system)

Downloaded from www.Manualslib.com manuals search engine 1A-26 Engine General Information and Diagnosis:
• The MIL is turned on when the ECM and/or
TCM detect malfunction(s). Each ECM and
TCM stores diagnostic information as the
diagnostic trouble code (DTC) in its
memory and outputs the DTC to the scan
tool.
Therefore, check both of the ECM and TCM
for any DTC with the scan tool because the
DTC stored in ECM and TCM is not read
and displayed at a time. However, each of
the ECM and TCM needs not to be checked
with the generic scan tool because the
DTC stored in ECM and TCM is read and
displayed at a time.

1) Prepare CAN communication OBD generic scan tool
or SUZUKI scan tool.
Special tool
(A): SUZUKI scan tool (SUZUKI-SDT)
2) With ignition switch OFF, connect it to DLC (1)
located on underside of instrument panel at driver’s
seat side.
3) Turn ignition switch ON and confirm that MIL lights.
4) Read DTC and freeze frame data according to
instructions displayed on 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”.
5) After completing the check, turn ignition switch off
and disconnect scan tool from DLC.
DTC ClearanceS6RW0D1104004
NOTE
There are two types of OBD system
depending on the vehicle specification.
For identification, refer to “Precaution on On-
Board Diagnostic (OBD) System”.

1) Connect SUZUKI scan tool or CAN communication
OBD generic scan tool to data link connector in the
same manner as when making this connection for
DTC check.2) Turn ignition switch OFF and then ON.
3) Erase DTC and pending DTC according to
instructions displayed on scan tool. Freeze frame
data is cleared with the DTC. Refer to scan tool
operator’s manual for further details.
If communication between scan tool and ECM is not
possible, go to “Troubleshooting for Communication
Error with Scan Tool Using CAN”.
4) After completing the clearance, turn ignition switch
OFF and disconnect scan tool from data link
connector.
NOTE
DTC and freeze frame data stored in ECM
memory are also cleared in the following
cases. Be careful not to clear them before
keeping their record.
• When power to ECM is cut off (by
disconnecting battery cable, removing
fuse or disconnecting ECM connectors).
• When the same malfunction (DTC) is not
detected again during 40 engine warm-up
cycles. (See “Warm-Up Cycle” of “On-
Board Diagnostic System Description”.)

Troubleshooting for Communication Error with
Scan Tool Using CAN
S6RW0D1104083
Perform this troubleshooting when it is not possible to
communicate between scan tool and ECM/TCM.
NOTE
• When performing this troubleshooting, be
sure to have full understanding of
“Precaution on CAN Troubleshooting” and
observe it.
• It may be possible that CAN system has
trouble because of fuse blown or low
battery voltage. Before troubleshooting,
check to make sure that fuse, battery
voltage and generator status are normal.
• When disconnecting each control module
connector in this troubleshooting, various
DTCs will be detected. Be sure to clear
DTCs in the following control modules
after completing this troubleshooting.
–ECM
–BCM
–TCM
– Keyless start control module
– 4WD control module
– HVAC control module (Auto A/C model)
– P/S control module

(A) 1I5RW0C110011-01