ecm diagram SUZUKI SWIFT 2008 2.G Service Workshop Manual
Page 1262 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-91 Wiring Systems: 
E-2 Auto A/C System Circuit DiagramS7RS0B910E033
12G53
G51
G52
G51
G52 G52 G51
251211
11
15
17
12V
198
REDGRN
RED/BLK
GRN/RED
RED/YEL
RED/YELRED/BLK
RED/BLKBLU/WHT
M
7133G01
8G34
ILL
Auto A/C panel
Sunload sensor
DLC Auto
unit
Air intake control actuator
BACK
10A24
"A-5"
PW
"A-5"BW"D-4"RY
18
GRN/WHT
"A-8"GW
ECMBCMBCM
BLK/ORN
YEL/BLKPNK
5
PPL/WHT
PPL/WHT
BLK/ORNBLK/YEL
5V 5V
12V
J/B
7
YEL
YEL
"A-8"Y
109
G31
J/C
D
D
G15
J/C
B
B
BLK
BLK
G31
J/C
C
C
G16
J/C
C
C
G15
J/C
A A
11
BLK
A
G16
J/C
A
A
J/C
BG31B B
16
5
I7RS0B910932-01  
Page 1266 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-95 Wiring Systems: 
F-2 Anti-Lock Brake System Circuit DiagramS7RS0B910E035
1326
14
1 3
23
17
E03
ABS
Cont.M
BCM
BLK
30A
ABS
SOL16
30A
ABS
MOT9
WHT/REDWHT/BLU
GRN/WHT
6
BLKREDWHT
PNK/BLK
PB
PNK/BLK
RB
RED/BLU
RED/BLU
149G35  E37
"C-3""A-8"
ECM
"A-5"
J/B10A ABS
31
E419
GRN/ORN
7
GW"D-7"Brake light switch
(CAN)
(CAN)
(ABS)
GRN/WHT
J/B
E411
8
 Individual circuit  fuse box (No.1)
108
12
RED
R
6
WHT
W
RW
M13A engine, M15A engine
M16A engineA
AB
B
I7RS0B910933-01  
Page 1268 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-97 Wiring Systems: 
F-3 Electronic Stability Program System Circuit DiagramS7RS0B910E039
1647
132 13
44E85
BLK
ABS
SOLABS
MOT
WHT/REDWHT/BLU
6
BLK
REDWHT
REDWHT
REDWHT
25
BLK/ORN
GRN/ORN
GRN/ORN
GRN/ORN
 Individual circuit 
fuse box (No.1)  J/B
ABS
GRN/ORN
ECM
35
"A-5"
"C-3"
steering
angle sensor
RED
R
4246
WHT
W
RW
1
4G37
E46
2
2
BCM
A
A
A
BG59
B
B
RW
2
1
WHT/REDWHTRED
3910
(CAN) (CAN)
(CAN)
(CAN)
(CAN)
7
ESP   
Cont.M
1E45 L02
LT GRN/RED
LT GRN/REDRED/YEL
RED/YEL
BLK/ORN
WHT/BLK
RY
J/C J/C
B
BLKBLK
BLK/ORN
BLK/ORN
16181410
BLK
ESP    off
switch
L6956
42
G15
G541
29
RED/BLK
2
37
BLU/RED
3
31
GRN/BLK
5E84B
J/C
D
L74D
R
R
"D-3"J/B
YAW/G sensor
J/C
A
L24A
B
B
30A
16
40A
9
10A
31
15A
RADIO
40
E419G335
E37 
G3514
I7RS0B910935-01  
Page 1270 of 1496
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F-4 Power Steering System Circuit DiagramS7RS0B910E036
P/S
Cont.M
50AEPS12
E4112
J/B
10A IG1 SIG
29
RED
20
E48 
E50
E50 
E48
Torque sensor
BLK
E49
8
GRN
LT GRN/BLK
YEL
16
GRN
8
BRN
49
WHT
18
BLU
619
1
21
LT GRN/BLK
3
E53
E49
E52
E52
RB
5
ECM
"A-5"
RED/BLU
RED/BLU
14
 Individual circuit 
fuse box (No.1)
RHD
LHDAB
AB2 
6AB6 
2AB1 
7AB5 
3AB7 
1
I5RS0C910957-02  
Page 1272 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-101 Wiring Systems: 
G-1 Audio System Circuit DiagramS7RS0B910E037
PPL
PPL
G335
GRY
18141814L37J21
G03  L333 13 2
515 14
4 5
4
5
11
21 1
2 2
1 1
2 2
1 2
1
3
13 4
14 5
15 6
16 11
RY"D-4"RY
WHT/RED
G121
J/C
G17
WHT/RED
J/B15ARADIO
40
RED/YEL
J/C
G31
BCM
"A-8"
Antenna amplifier
WHT/GRN
L39
L33 
G0318E37 
G354
WHT/GRN
BLU/WHT
BLU/WHT
15A ACC 2
27
BLK
10
Tweeter (L)Front (L)
PNKBLU
J12
J10
Tweeter (R)Front (R)
J04J02
YEL/BLK
YEL/RED
Rear (R)Rear (L)
LT GRN
LT GRN/BLKPNKBLUPNKBLUYEL/BLK
YEL/RED
YEL/BLK
YEL/REDLT GRN
LT GRN/BLK
GRY/RED
GRY
GRY/RED
PNKBLUYEL/BLK
YEL/REDLT GRN
LT GRN/BLKGRY
GRY/RED
12
Audio
RED/YEL
921 0
J22J17
B
B C
C D
DSteering switch
(volume/seek etc)
G27
GRN
1920
BLK/YEL
4 3
L13 
J16
4
P
ECM
"A-5"
18
RHD
LHD
Other than indonesian make
Indonesian make
ABC
DC
D
Antenna
L31 
J09 
L07  J01A
B
L07 J01 
L31  J09A
B
IF EQPD
I7RS0B910938-01  
Page 1401 of 1496
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 Contro l 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-2
Theft Deterrent Light ......................................... 10B-3
Security Alarm Description  (If Equipped) .......... 10B-3
Schematic and Routing Diagram ...................... 10B-4 Body Electrical Control System Wiring Circuit Diagram .......................................................... 10B-4
Connector Layout Diagram of BCM and  Junction Block Assembly ................................ 10B-7
Component Locatio n ......................................... 10B-8
BCM and Related System Component  Location .......................................................... 10B-8
Diagnostic Information an d Procedures .......... 10B-9
BCM Self-Diagnosis Function ........................... 10B-9
Body Electrical Control System Check............ 10B-10
Scan Tool Data ............................................... 10B-12
DTC Table ....................................................... 10B-14
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 Ma lfunction ................ 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-21
DTC U0155 (No. 0155): Lost Communication  with Instrument Panel Cluster (IPC) Control 
Module .......................................................... 10B-21
DTC U1073 (No. 1073): Control Module  Communication Bus Off ................................ 10B-24 DTC U1100 (No. 1100): Lost Communication 
with ECM ....................................................... 10B-25
DTC U1101 (No. 1101): Lost Communication  with TCM ....................................................... 10B-27
DTC U1144 (No. 1144): Lost Communication  with Keyless Start Control Module ................ 10B-29
Inspection of BCM and its Circuits .................. 10B-31
Repair Instructions ........... ...............................10B-39
BCM (Included in Junction Block Assembly)  Removal and Installation ............................... 10B-39
Outside Air Temperature Sensor Removal  and Installation .............................................. 10B-39
Outside Air Temperature Sensor Inspection ... 10B-39
Security Alarm Mode Selection Procedure (If  Equipped) ...................................................... 10B-39
Special Tools and Equipmen t .........................10B-40
Special Tool .................................................... 10B-40
Immobilizer Control Syst em ................. 10C-1
Precautions.........................................................10C-1
Precautions in Diagnosing Troubles .................10C-1
Precaution in Replacing ECM ...........................10C-1
Precautions in Handli ng Immobilizer Control 
System ............................................................10C-1
General Description ...........................................10C-2 Immobilizer Control System  Introduction ..........10C-2
Immobilizer Control System Components  Location...........................................................10C-3
On-Board Diagnostic System Description  (Self-diagnosis Function) ................................10C-3
Schematic and Routing Diag ram ......................10C-4
Immobilizer Control System Wiring Circuit  Diagram...........................................................10C-4
Diagnostic Information an d Procedures ..........10C-5
Immobilizer Control System  Check ...................10C-5
Diagnostic Trouble Code (DTC) Check.............10C-5
Diagnostic Trouble Code (DTC) Clearance ......10C-6
Diagnostic Trouble Code (DTC) Table ..............10C-6
Scan Tool Data .................................................10C-7
Immobilizer Indicator Lamp Does Not Come  ON with Ignition Switch ON and Engine Stop ..10C-7
Immobilizer Indicator Lamp Remains ON after  Engine Starts...................................................10C-8
DTC P1614: Transponder Re sponse Error .......10C-9  
Page 1402 of 1496
Downloaded from www.Manualslib.com manuals search engine 10-ii Table of Contents
DTC P1615: ID Code Does Not Registered (Vehicle equipped with keyless start system 
only) ................................................................10C-9
DTC P1616: Different Registration ID Codes  (Vehicle equipped with keyless start system 
only) ..............................................................10C-10
DTC P1618: CAN Communication Error  (Reception Error for Keyless Start Control 
Module) (Vehicle equipped with keyless 
start system only) ..........................................10C-11
DTC P1621: Immobilizer Communication  Line Error ......................................................10C-12
DTC P1622: EEPROM Reading / Writing  Error ..............................................................10C-13
DTC P1623: Unregistered Transponder .........10C-13
DTC P1625: Immobilizer An tenna Error..........10C-14
DTC P1636: Immobilizer Information  Registration Failure .......................................10C-14
DTC P1638: Immobilizer Information  Mismatched ...................................................10C-15
Inspection of Immobilizer Control Module  (ICM) and Its Circuit ....... ...............................10C-16
Repair Instructions ........... ...............................10C-18
Immobilizer Control Mo dule (ICM) Removal 
and Installation ..............................................10C-18
Registration of the Ignition Key .......................10C-18
Procedure after ECM Replacement ................10C-18
Special Tools and Equipmen t .........................10C-19
Special Tool ....................................................10C-19
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 El ectric 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 Diagn osis Introduction ... 10E-8 Keyless Start System Chec
k ............................. 10E-8
Customer Questionnaire (E xample) .................. 10E-9
Key Indicator Lamp Check .............................. 10E-10
DTC Check...................................................... 10E-10
DTC Table ....................................................... 10E-11
DTC Clearance ............................................... 10E-12
Keyless Start System Symp tom Diagnosis ..... 10E-12
Keyless Start System Operation Inspection .... 10E-13
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-18
Key Indicator Lamp Circuit Check (Key  indicator lamp doesn’t light when ignition 
knob switch is pushed.) ................................. 10E-20
Keyless Start Control Module Power and  Ground Circuit Check .................................... 10E-22
DTC No. 11: Communi cation Error with 
Steering Lock Unit ......................................... 10E-23
DTC No. 13 / No. 14: Release Signal Error  from Steering Lock Unit / Steering Lock Unit 
Malfunction .................................................... 10E-24
DTC No. 21 / No. 22: Internal Error of Keyless  Start Control Module  (EEPROM reading 
error) / (EEPROM writing error) ............ ........ 10E-24
DTC No. 31: Lost Commun ication with BCM .. 10E-25
DTC No. 33: Control Module Communication 
Bus Off .......................................................... 10E-27
DTC No. 51 / No. 52 / No. 53: Driver Side /  Passenger Side / Rear End Door Request 
Switch Failure................................................ 10E-28
Repair Instructions ............ .............................. 10E-30
Antennas and Request Switches Removal  and Installation .............................................. 10E-30
Front Door (Driver and Passenger Side), Rear  End Door Request Switch  Inspection............ 10E-31
Steering Lock Unit Removal and Installation .. 10E-31
Steering Lock Unit Inspection ......................... 10E-31
Front Door Lock Switch In spection ................. 10E-31
Keyless Start Control Module Removal and  Installation ..................................................... 10E-32
Remote Controller Inspection.......................... 10E-32
Replacement of Remote Controller Battery .... 10E-32
Registration Procedure  for Remote Controller 
ID Code ......................................................... 10E-33  
Page 1424 of 1496
Downloaded from www.Manualslib.com manuals search engine 10B-21 Body Electrical Control System: 
DTC B1170 (No. 1170): EEPROM Access ErrorS7RS0BA204012
DTC Detecting Condition and Possible Cause
DTC Troubleshooting
NOTE
Before performing steps below, be sure to perform “Body Electrical Control System Check”.
 
1) Ignition switch OFF.
2) Replace BCM.
3) Repeat BCM Check Flow Table.
DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control ModuleS7RS0BA204019
Wiring Diagram
ABS model DTC detecting condition Possible cause
Data write error or check sum error. BCM malfunction
REDWHTE03-6E03-12
6
3
7
REDWHT
1
[B]
[A]
G37E46
1234567
1234567
8910
11
8910
11
121314 121314
151617
18
19202122 [D]65
1615 141312 11 43
2423 2122 10 9 8 7
21
1920 1817
C3417 16
26 2515 14
65 3
42
13 12
23 2224 1110 9
212019 87
18
1
C35
[E]
REDWHTC37-13C37-12REDWHTC34-17C34-7
2
12345678910
11
141516
36 34 33 32 31 30 29 24 23
37
181920
[C] [F]
G49
E23-3E23-18
4
REDWHTG28-7G28-9REDWHTG49-19G49-18
5
REDWHTE03-10E03-8
G37-4G37-2
REDWHTE46-1E46-2REDWHTREDWHTG28-8G28-10
E03
15
16
17
18
19
20
21
22
23
24
25 2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
E23C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 33 1
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 331
1213
238
G281234567
8
910111213141516
1718
19
20
212223242526272829303132
RED/BLKWHT/BLKG37-3G37-1+BB
I7RS0BA20004-01
[A]: BCM connector (viewed from harness side)  1. ECM
[B]: ECM connector (viewed from harness side) 2. TCM (A/T model)
[C]: Combination meter connector (viewed from harness side) 3. BCM
[D]: TCM connector (viewed from harness side) 4. Combination meter
[E]: Keyless start control module connector (viewed from harness side) 5. Keyless start control module (if equipped)
[F]: ABS control module connector (viewed from harness side) 6. ABS control module
7. Data link connector (DLC)  
Page 1427 of 1496
Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System:  10B-24
DTC U1073 (No. 1073): Control Module Communication Bus OffS7RS0BA204014
Wiring Diagram
Refer to “DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control Module”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) Connect scan tool to DLC with  ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting DTC detecting condition Trouble area
Transmission error that is inconsistent between transmission data and 
transmission monitor (CAN bus monitor)  data is detected more than 7 
times continuously.
(1 driving detection logic) • CAN communication circuit
• Combination meter
• BCM (included in junction block 
assembly)
• TCM (A/T model)
• ABS/ESP ® control module
• Keyless start control module (if equipped)
•ECM
• Steering angle sensor (if equipped)
Step Action YesNo
1 Control module connector check
1) Check connection of connectors of all control modules 
communicating by means of CAN.
2) Recheck DTC.
Is DTC U1073 detected? Go to Step 2.
Intermittent trouble. 
Check for intermittent 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”.
2 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules 
communicating by means of CAN.
3) Check CAN communication circuit between control  modules for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 3.
Repair circuit.  
Page 1428 of 1496
Downloaded from www.Manualslib.com manuals search engine 10B-25 Body Electrical Control System: 
DTC U1100 (No. 1100): Lost Communication with ECMS7RS0BA204015
Wiring Diagram
Refer to “DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control Module”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) Connect scan tool to DLC with  ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC. 3
DTC check of BCM
1) Turn ignition switch to OFF position.
2) Connect connectors of disconnected control modules 
communicating by means of CAN.
3) Disconnect connector from any one of control modules  other than BCM.
4) Recheck BCM for DTC.
Is DTC U1073 detected? Disconnect connectors 
of control modules other 
than the one whose 
connector is 
disconnected in Step 3) 
one by one and check 
that DTC U1073 is 
detected by BCM each 
time connector is 
disconnected. When 
DTC U1073 is not 
detected by BCM while 
checking in this way, go 
to description under 
“NO” below. If DTC 
U1073 is detected by 
BCM even when 
connectors of all control 
modules that use CAN 
communication with 
BCM are disconnected, 
substitute a known-
good BCM and recheck.Check power and 
ground circuit of control 
module disconnect in 
Step 3). If circuit is OK, 
substitute a known-
good control module 
disconnected in Step 3) 
and recheck.
Step Action Yes No
DTC detecting condition
Trouble area
BCM can not receive CAN data from ECM for longer than specified 
time continuously. • CAN communication circuit
• BCM (included in junction block assembly)
•ECM