2006 SUZUKI SX4 diagram

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-169
3CAN line check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control module
communicated by CAN.
3) Check all the following CAN lines for open, short to
power circuit, short to ground circuit, short to other CAN
line and high resistance.
• Between BCM connector and DLC
• Between BCM connector and ABS control module
connector
• Between ABS control module connector and ECM
connector
• Between ECM connector and TCM connector
• Between BCM connector and keyless start control
module connector
• Between combination meter connector and 4WD
control module connector
• Between BCM connector and combination meter
connector
Are all CAN lines in good condition?Go to Step 4. Repair CAN line.
4Power and ground circuits check of BCM, ECM, ABS
control module and combination meter
1) Check power and ground circuits of the following control
module.
•ECM:
Refer to “ECM Power and Ground Circuit Check”.
•BCM:
Refer to “BCM Power Circuit and Ground Circuit
Check in Section 10B”.
• Combination meter:
Refer to “Combination Meter Circuit Diagram in
Section 9C”.
• ABS control module:
Refer to “ABS Hydraulic Unit / Control Module
Assembly Power and Ground Circuit Check in Section
4E”.
Are they in good condition?Go to Step 5. Repair power and/or
ground circuit.
5CAN communication check of BCM, ECM, ABS control
module and combination meter
1) Turn ignition switch to OFF position.
2) Connect BCM, ECM, ABS control module and
combination meter connectors.
3) Perform “Communication Bus Check” under “Bus
Check” using SUZUKI-SDT with ignition switch turned
ON.
Are all of BCM, ECM, ABS control module and combination
meter normally displayed?Go to Step 12. Go to Step 6. Step Action Yes No

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-193
ECM Power and Ground Circuit CheckS6RW0D1104073
Wiring Diagram
Circuit Description
When the ignition switch is turned ON, the main relay turns ON (the contact point closes) and the main power is
supplied to ECM.
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
BLK/WHT
BLK/RED
BLK/RED
BLK/RED
BLK/YELBLK/YEL
BLK/YEL
GRN
BRN/WHT
12V5V
2
13
12
13
14-1
15-1
15-2 14-2 4
56
E01-29
E01-1
E01-60
E01-16
9 87
1011
WHTWHT/REDE01-2
C01-58
C01-15 C01-30
BLK/ORN
BLKBLKBLK
WHT
GRY/RED
RED/BLK
GRY/BLU
C01-14
C01-53
C01-55
E01-54ORN
RED/BLUE01-55
BRNGRNBLU
REDYELWHT
E01-35E01-37E01-52
E01-51
E01-34E01-36
E01-50
REDGRN
WHTBLK
BLU
YEL
C01-43C01-54
C01-40C01-42
C01-45
C01-44
C01-41
E01-31
GRY
BLK
I6RW0D110052-01
1. Main fuse box 7. Individual circuit fuse box No.1 13. A/C refrigerant pressure sensor (if equipped with A/C)
2. Ignition switch 8. “IGN” fuse 14-1. APP sensor (main)
3. Main relay 9. “FI” fuse 14-2. APP sensor (sub)
4. BCM (included in junction block assembly) 10. “DOME” fuse 15-1. TP sensor (main)
5. “IG COIL” fuse 11. DLC 15-2. TP sensor (sub)
6. ECM 12. MAP sensor (if equipped)

Downloaded from www.Manualslib.com manuals search engine 1A-196 Engine General Information and Diagnosis:
Fuel Injector Circuit CheckS6RW0D1104074
Wiring Diagram11Sensor power source circuit check
1) Connect connectors to ECM with ignition switch turned
OFF.
2) Turn ON ignition switch, measure each voltage between
“C01-14”, “E01-35”, “E01-34” and “C01-43” terminal of
ECM connector and vehicle body ground.
Is each voltage 4 – 6 V?ECM power and ground
circuit is in good
condition.Go to Step 12.
12Sensor power source circuit check
1) Disconnect connectors from ECM, TP sensor, MAP
sensor, A/C refrigerant pressure sensor (if equipped with
A/C) and APP sensor with ignition switch turned OFF.
2) Measure each resistance between “C01-14”, “E01-35”,
“E01-34” and “C01-43” terminal of ECM connector and
vehicle body ground.
Is each resistance infinity?Check internal short
circuit of TP sensor,
MAP sensor, A/C
refrigerant pressure
sensor (if equipped with
A/C) and/or APP
sensor.“GRY/RED”, “BRN” and/
or “RED” wire is shorted
to ground circuit. Step Action Yes No
BLK/WHT
BLK/RED
BLK/RED
WHTBLK/YELBLK/YEL
BLK/YEL
GRN
BRN/WHT
12V5V
9
2 83E01-29
E01-1
E01-60
10 11
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
C01-1
C01-2
C01-16
C01-17
BLK/REDBLK/RED
BLU/YEL
BLU/RED
BLU/ORN
BLU/WHT
E01-16
4
5
6
71
C01-58
C01-15 C01-30
BLK/ORN
BLKBLKBLKE01-31
I6RW0D110053-01
1. Main fuse box 4. No.1 injector 7. No.4 injector 10. “FI” fuse
2. Main relay 5. No.2 injector 8. “IG COIL” fuse 11. “IGN” fuse
3. ECM 6. No.3 injector 9. Ignition switch

Downloaded from www.Manualslib.com manuals search engine 1A-198 Engine General Information and Diagnosis:
Fuel Pump and Its Circuit CheckS6RW0D1104075
Wiring Diagram
E01-1
E01-15
BLK/REDBLK/YEL
BLK/YEL
BLK/RED
E01-29BLK/WHT
GRN/WHT
BLK/WHT
BLK/WHT
PNK
BLK
WHT
GRN
C01-58
C01-15
C01-30
BLK/ORN
BLK
BLK
7
8 9643
25
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
BLK/YEL
1
BLK
E01-16BLK/RED
BLK/RED
E01-31
BRN/WHTE01-60
I6RW0D110054-01
1. Main fuse box 4. Fuel pump relay 7. Ignition switch
2. Main relay 5. Fuel pump 8. “FI” fuse
3. ECM 6. “IG COIL” fuse 9. “IGN” fuse

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-201
Fuel Pressure CheckS6RW0D1104076
System Diagram
Special tool
(A): 09912–58442
(B): 09912–58432
(C): 09912–58490
Troubleshooting
NOTE
Before using following flow, check to make sure that battery voltage is higher than 11 V. If battery
voltage is low, pressure becomes lower than specification even if fuel pump and line are in good
condition.

I3RM0A110081-01
1. Injector 2. Delivery pipe 3. Fuel filter and fuel pump
Step Action Yes No
1Fuel pressure check
1) Check fuel pressure referring to “Fuel Pressure
Inspection in Section 1G”.
Is check result satisfactory?Go to Step 2. Go to Step 5.
2Fuel pressure check
1) Start engine and warm it up to normal operating
temperature.
2) Keep engine speed at 4000 rpm.
Does fuel pressure show about the same value as Step 1?Go to Step 3. Go to Step 8.
3Fuel line check
1) Check fuel pipe, fuel hose and joint for fuel leakage.
Are they in good condition?Go to Step 4. Repair or replace
defective part.

Downloaded from www.Manualslib.com manuals search engine 1A-202 Engine General Information and Diagnosis:
A/C Condenser Cooling Fan Control System InspectionS6RW0D1104077
Wiring Diagram4Fuel line check
1) Check fuel pipe, fuel hose and joint for damage or
deform.
Are they in good condition?Faulty fuel pressure
regulator.Repair or replace
damaged or damaged
part.
5Was fuel pressure higher than specification in Step 1?Go to Step 6. Go to Step 7.
6Fuel line check
1) Check fuel pipe, fuel hose and joint for damage or
deform.
Are they in good condition?Faulty fuel pressure
regulator.Repair or replace
damaged or damaged
part.
7Fuel pump operating sound check
1) Remove fuel filler cap and then turn ON ignition switch.
Can you hear operating sound?Go to Step 8. Faulty fuel pump.
8Fuel line check
1) Check fuel pipe, fuel hose and joint for damage or
deform.
Are they in good condition?Clogged fuel filter, faulty
fuel pump, faulty fuel
pressure regulator or
fuel leakage from hose
connection in fuel tank.Repair or replace
defective part. Step Action Yes No
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
BLK/WHT
WHT
1
GRN
27
E01-29
10
89
REDBLK
3
5BLK/WHT
RED/BLKE01-58
WHT
4E01-47 GRY
BLU/YEL
6
C01-58
C01-15 C01-30
BLK/ORN
BLKBLKE01-31BLK
I6RW0D110055-01
1. Individual circuit fuse box No.1 5. A/C condenser cooling fan motor 9. “A/C” fuse
2. Ignition switch 6. A/C compressor 10. “IG COIL” fuse
3. A/C condenser cooling fan relay 7. ECM
4. A/C compressor relay 8. “FI” fuse

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-205
A/C System Circuits CheckS6RW0D1104078
Wiring Diagram
BLU/WHT
BLU/WHTE01-19
E01-19
21
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
BLK/RED
BRN/WHT
12V5V
17
10
8
E01-1
E01-60
BLK/YEL
REDBLK11
WHT9
34
RED/BLK
BLK/REDE01-47
E01-58
BLU/YELGRY
19
2 1
20
5 15
WHT
RED
WHT
RED
WHT
RED
WHT
RED
E01-18E01-3
WHT/BLK
C01-14
E01-57
E01-54
E01-55RED/BLU
ORN
GRY/RED
BLK/YEL
GRN/WHT
BLK/WHT
WHT
1423
24
6
22 18
80A
1316 7 12
GRN
25
BLK/RED
BLU/YEL
YEL
WHT/BLU
BLK/YELBLK/YEL
BLU
I6RW0D110056-01
1. BCM 10. A/C condenser cooling fan motor relay 19. A/C switch
2. ABS control module 11. A/C condenser cooling fan motor 20. Blower motor
3. Blower speed selector (Auto A/C model) 12. “FI” fuse 21. Blower speed selector (Manual A/C model)
4. ECM 13. “IGN” fuse 22. Blower motor relay
5. A/C evaporator outlet air temp. sensor (Manual
A/C model)14. Ignition switch 23. “IG2 SIG” fuse
6. “IG COIL” fuse 15. A/C refrigerant pressure sensor 24. “BACK” fuse
7. “A/C” fuse 16. “BLW” fuse 25. Individual circuit fuse box No.1
8. A/C compressor relay 17. Main relay
9. A/C compressor 18. Junction block assembly

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-209
Electric Load Signal Circuit CheckS6RW0D1104079
Wiring Diagram
E01 C01
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
BLK/WHT
BLK/RED
WHT
BRN/WHT
12V5V
10
E01-29
E01-1
E01-60BLK/YEL
BLK/YEL
139BLK/REDE01-16
BLU/WHT
BLU/WHTE01-19
E01-19
14
3 4
YEL
2
12
BLK/WHT
BLKBLK/YEL
GRN
WHT/BLU
BLU
1 56
11 7
8
C01-58
C01-15C01-30
BLK/ORN
BLKBLKE01-31BLK
17 16
WHTREDE01-18E01-3 15WHTREDWHTREDWHTRED [A]
17
WHTRED
18E01-18E01-3 1615WHTREDWHTRED
[B]
19
I6RW0D110057-02
[A]: Junction block with BCM model 6. Junction block assembly 13. Blower speed selector (Auto A/C model)
[B]: Junction block without BCM model 7. “IG COIL” fuse 14. Blower speed selector (Manual A/C model)
1. Individual circuit fuse box No.1 8. “IG2 SIG” fuse 15. Electric load signal (rear defogger signal and headlight
signal), etc.
2. “BLW” fuse 9. ECM 16. BCM
3. “FI” fuse 10. Main relay 17. ABS control module
4. “IGN” fuse 11. Blower motor relay 18. CAN junction connector
5. Ignition switch 12. Blower motor 19. To other control module connected CAN