Ecm SUZUKI SX4 2006 1.G Service Owner's Manual

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-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-16 Engine General Information and Diagnosis:
Connector: C01
Terminal Wire color Circuit Terminal Wire color Circuit
1 BLU/YEL Fuel injector No.1 output 31 — —
2 BLU/WHT Fuel injector No.2 output 32 — —
3 GRN/ORNEGR valve (stepper motor coil 2)
output33 — —
4 GRN/REDEGR valve (stepper motor coil 1)
output34 — —
5 GRN/WHTIgnition coil No.2 and No.3
output35 — —
6 GRN/YELIgnition coil No.1 and No.4
output36 — —
7— — 37— —
8— — 38— —
9— — 39— —
10 WHTOxygen signal of heated oxygen
sensor-140 WHTThrottle position sensor (sub)
signal
11 B R NOxygen signal of heated oxygen
sensor-2 (if equipped)41 GRYGround for shield wire of TP
sensor circuit
12 WHTCAN communication line (active
low signal) to TCM (for A/T
model)42 BLKGround for throttle position
sensor
13 REDCAN communication line (active
high signal) to TCM (for A/T
model) 43 REDOutput for 5 V power source of
throttle position sensor
14 GRY/REDOutput of 5 V power source for
MAP sensor (if equipped) and A/
C refrigerant pressure sensor
(A/C model)44 YEL Output of throttle actuator
15 BLK Ground for ECM 45 BLU Output of throttle actuator
16 BLU/RED Fuel injector No.3 output 46 BLK/REDHeater output of heated
oxygen sensor-1
17 BLU/ORN Fuel injector No.4 output 47 RED/BLUHeater output of heated
oxygen sensor-2 (if equipped)
18 BRN/YELEGR valve (stepper motor coil 4)
output (if equipped)48 YEL/GRN Starting motor signal
19 WHT/REDEGR valve (stepper motor coil 3)
output (if quipped)49 — —
20 RED/YEL CMP sensor signal 50 WHT/BLU Ground of ECM for shield wire
21 PNK CKP sensor signal 51 — —
22 — — 52 — —
23 — — 53 RED/BLKManifold absolute pressure
(MAP) sensor signal (if
equipped)
24 LT GRNEngine coolant temp. (ECT)
sensor signal54 GRNThrottle position sensor (main)
signal
25 BLK/YELIntake air temp. (IAT) sensor
signal55 GRY/BLU Ground for sensors
26 GRN/BLKMass air flow (MAF) sensor
signal56 RED Knock sensor signal
27 GRY Ground for MAF sensor 57 ORN Ground for sensors
28 BLU/YEL Generator control output 58 BLK/ORN Ground for ECM
29 BLU/BLKEVAP canister purge valve
output59 GRN/WHTOil control valve ground
(for engine with VVT system)
30 BLK Ground for ECM 60 GRN/REDOil control valve output
(for engine with VVT system)

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

Downloaded from www.Manualslib.com manuals search engine 1A-18 Engine General Information and Diagnosis:
Engine and Emission Control Input / Output TableS6RW0D1101010
INPUTOUTPUT
ELECTRIC CONTROL DEVICE
BAROMETRIC PRESSURE SENSOR
BRAKE LIGHT SWITCH
START SWITCH
IGNITION SWITCH
A/C REFRIGERANT PRESSURE SENSOR (if equipped with A/C)
BLOWER SWITCH
A/C SWITCH (if equipped with A/C)
A/C EVAP OUTLET AIR TEMP. SENSOR (if equipped with A/C)
WHEEL SPEED SENSOR
HEATED OXYGEN SENSOR-1
HEATED OXYGEN SENSOR-2 (if equipped)
IAT SENSOR OF MAF AND IAT SENSOR MAF SENSOR OF MAF AND IAT SENSOR
ECT SENSOR
TP SENSOR
THROTTLE ACTUATOR
A/C CONDENSER FAN RELAY FUEL PUMP RELAY
FUEL INJECT
THROTTLE ACTUATOR CONTROL RELAYOR
HO2S HEATER
IGNITION COIL WITH IGNITER
EGR VALVE (if equipped)
EVAP CANISTER PURGE VALVEA/C COMPRESSOR RELAY (if equipped with A/C)RADIATOR FAN RELAY
MIL
MAIN RELAY
OIL CONTROL VALVE (for engine with VVT system) SIGNAL FROM SENSOR, SWITCH AND CONTROL MODULE
ABS CONTROL MODULE
KNOCK SENSOR
MAP SENSOR (if equipped)
CMP SENSOR
CKP SENSOR
IMMOBILIZER CONTROL MODULE (in ECM)
ELECTRIC LOAD (head light, rear defogger
TCM (for A/T model
P/S CONTROL MODULE))
APP SENSOR
I6RW0D110015-03

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 Engine General Information and Diagnosis: 1A-25
Step 2: DTC / Freeze Frame Data Check, Record and
Clearance
First, check DTC (including pending DTC), referring to
“DTC Check”. If DTC is indicated, print it and freeze
frame data or write them down and then clear them by
referring to “DTC Clearance”. DTC indicates malfunction
that occurred in the system but does not indicate
whether it exists now or it occurred in the past and the
normal condition has been restored now. To check which
case applies, check the symptom in question according
to Step 5 and recheck DTC according to Step 6 and 7.
Attempt to diagnose a trouble based on DTC in this step
only or failure to clear the DTC in this step will lead to
incorrect diagnosis, trouble diagnosis of a normal circuit
or difficulty in troubleshooting.
Step 3 and 4: Visual Inspection
As a preliminary step, be sure to perform visual check of
the items that support proper function of the engine
referring to “Visual Inspection”.
Step 5: Trouble Symptom Confirmation
Based on information obtained in “Step 1: Customer
Complaint Analysis: ” and “Step 2: DTC / Freeze Frame
Data Check, Record and Clearance: ”, confirm trouble
symptoms. Also, reconfirm DTC according to “DTC
Confirmation Procedure” described in each DTC diag.
flow.
Step 6 and 7: Rechecking and Record of DTC /
Freeze Frame Data
Refer to “DTC Check” for checking procedure.
Step 8: Engine Basic Inspection and Engine
Symptom Diagnosis
Perform basic engine check according to “Engine Basic
Inspection” first. When the end of the flow has been
reached, check the parts of the system suspected as a
possible cause referring to “Engine Symptom Diagnosis”
and based on symptoms appearing on the vehicle
(symptoms obtained through steps of customer
complaint analysis, trouble symptom confirmation and/or
basic engine check) and repair or replace faulty parts, if
any.
Step 9: Troubleshooting for DTC (See each DTC
Diag. Flow)
Based on the DTC indicated in Step 6 or 7 and referring
to the applicable DTC diag. flow, locate the cause of the
trouble, namely in a sensor, switch, wire harness,
connector, actuator, ECM or other part and repair or
replace faulty parts.Step 10: Intermittent Problems Check
Check parts where an intermittent trouble is easy to
occur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section
00” and related circuit of DTC recorded in Step 2.
Step 11: Final Confirmation Test
Confirm that the problem symptom has gone and the
engine is free from any abnormal conditions. If what has
been repaired is related to the DTC, clear the DTC once,
perform DTC confirmation procedure and confirm that no
DTC is indicated.
Malfunction Indicator Lamp (MIL) CheckS6RW0D1104002
1) Turn ON ignition switch (with engine at stop) and
check that MIL (1) lights.
If MIL does not light up (or MIL dims) but engine can
be starting, go to “Malfunction Indicator Lamp Does
Not Come ON with Ignition Switch ON and Engine
Stop (but Engine Can Be Started)” for
troubleshooting.
If MIL does not light with ignition switch ON and
engine does not start though it is cranked up, go to
“ECM Power and Ground Circuit Check”.
2) Start engine and check that MIL turns OFF.
If MIL remains ON and no DTC is stored in ECM, go
to “Malfunction Indicator Lamp Remains ON after
Engine Starts” for troubleshooting.
DTC CheckS6RW0D1104085
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
I4RS0A110012-01

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

Downloaded from www.Manualslib.com manuals search engine 1A-28 Engine General Information and Diagnosis:
Trouble area
• Scan tool
• Connector related to CAN line (included in DLC)
• CAN line
• Power or ground circuit of DLC
• Control module communicated by CAN
–ECM
–TCM
– ABS control module
–BCM
– Combination meter
– Keyless start control module
– 4WD control module
• Power or ground circuit of control module communicated by CAN
[A]: Non-Taiwan model[K]: Combination meter connector (viewed from terminal side)
[B]: Taiwan model1. ECM
[C]: DLC connector (viewed from terminal side) 2. ABS control module
[D]: ECM connector (viewed from harness side) 3. BCM
[E]: 4WD control module connector (viewed from harness side) 4. 4WD control module
[F]: TCM connector (viewed from harness side) 5. Combination meter
[G]: Keyless start control module connector (viewed from harness side) 6. Keyless start control module
[H]: BCM connector (viewed from harness side) (Non-taiwan model) 7. TCM
[I]: BCM connector (viewed from harness side) (Taiwan model) 8. CAN junction connector
[J]: ABS control module connector (viewed from terminal side) 9. DLC