key SUZUKI SWIFT 2006 2.G Service Owner's Manual
Page 611 of 1496
Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program:  4F-37
DTC C1037: Steering Angle Sensor Power Supply FailureS7RS0B4604033
Wiring Diagram
DTC Detecting Condition and Trouble Area4
Check yaw rate / G sensor assembly power supply 
circuit
1) Turn ignition switch to OFF position.
2) Disconnect ESP ® control module connector.
3) Check for proper connection to ESP ® control module 
connector terminals at “E85-31” and “E85-37”.
4) If OK, then measure voltage between connector terminal  “E85-37” and vehicle body ground.
Is it 0 V? Go to Step 5. “BLU/RED” wire circuit 
is shorted to power 
circuit.
5 Check yaw rate / G sensor assembly power supply 
circuit
1) Measure resistance between the following points.
• Between terminal “E85-37” of module connector and terminal “E84-3” of sensor terminal.
• Between terminal “E85-31” of module connector and  terminal “E84-5” of sensor terminal.
Are resistance less than 2 
Ω? Substitute a known-
good ESP
® hydraulic 
unit / control module 
assembly recheck. “BLU/RED” and/or 
“GRN/BLK” wire circuit 
open or high resistance.
Step
Action YesNo
[A]
E85
161
15
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3233
34
35
36
37
38
39
40
41
42
43
44
45
46
47
[C] G37
E46
124
53
67
891011121314124
53
67
891011
1213141516171819202122
WHTGRN
3
E85-13
E85-44REDWHT65E46-1E46-2
4 8
6
BLK/ORN
REDWHT
REDWHT
G37-4G37-2
G50-10G50-9
G50-2
6
2
1
7 910
G50-1
G50-3
GRN/ORN
WHT/RED
WHT
[B]
G50
109 321
I6RS0B460020-01
[A]: ESP® control module connector (viewed from 
terminal side) 3. Ignition switch 8. ESP
® hydraulic unit control module assembly
[B]: Steering angle sensor connector (viewed from  harness side) 4. Junction block assembly 9. Junction connector
[C]: BCM connector (viewed from harnes s side) 5. BCM (included in junction block 
assembly) 10. To Combination meter and keyless start control 
module
1. Battery 6. CAN driver
2. Main fuse box 7. Steering angle sensor
DTC Detecting Condition Trouble Area
Power supply voltage to steering angle sensor is to o low. • Steering angle sensor power supply circuit
• Steering angle sensor
• ESP® control module  
Page 623 of 1496
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DTC U1073: Control Module Communication Bus OffS7RS0B4604057
Wiring Diagram
DTC Detecting Condition and Trouble Area
E85-13E85-44
E46-2E46-1
G37-4G37-2
E85-46E85-42
E23-3E23-18
G50-9G50-10
G28-8G28-10
G28-9G28-7
G42-19G42-18
REDWHT
WHTRED
WHTRED
REDWHT
REDWHT
WHTRED
REDWHT
REDWHT
REDWHT
[A]
21
E2334
1819
5671011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 5826
27
28
15
30
56 4832 31343536374042 39 38
44
45 43 41 33
1213
238
G42[F]
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[B]
E85
161
15
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3233
34
35
36
37
38
39
40
41
42
43
44
45
46
47 [C]
G37
E46
124
53
67
891011121314124
53
67
891011
1213141516171819202122
[E] G28
12345678910111213141516
17181920212223242526272829303132
[D] G50
109 321
4
5
7 1
2
3
6
I7RS0B460011-02
[A]: ECM connector (viewed from harness side) [F]: Keyless start control module 
connector (viewed from 
harness side) 5. Combination meter
[B]: ESP ® control module connector (viewed from 
terminal side) 1. ECM
6. Keyless start control module (if equipped)
[C]: BCM connector (viewed from harness side) 2. ESP® hydraulic unit / control 
module assembly 7. Junction connector
[D]: Steering angle sensor connector (viewed from  harness side) 3. BCM
[E]: Combination meter connector (viewed from  harness side) 4. Steering angle sensor
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. • CAN communication circuit
•ECM
• ESP
® control module
•BCM
• Steering angle sensor
• Combination meter
• Keyless start control module (if equipped)  
Page 624 of 1496
Downloaded from www.Manualslib.com manuals search engine 4F-50 Electronic Stability Program: 
DTC Troubleshooting
DTC U1100: Lost Communication with ECM (Reception Error)S7RS0B4604058
Wiring Diagram
Refer to “Wiring Diagram” under “DTC U1073: Control Module Communication Bus Off”.
DTC Detecting Condition and Trouble Area
DTC TroubleshootingStep Action Yes No
1 Was “Electronic Stability Pr ogram Check” performed? Go to Step 2. Go to “Electronic 
Stability Program 
System Check”.
2 DTC check for ESP®
1) Check connection of connectors of all control modules 
communicating by means of CAN.
2) Recheck DTC for ESP ®.
Is DTC U1073 indicated? Go to Step 3. Intermittent trouble. 
Check for intermittent 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”.
3 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 4. Repair or replace the 
CAN communication 
line.
4 DTC check for ESP®
1) Connect connectors of disconnected control modules 
communicating by means of CAN.
2) Disconnect each connector. •ECM
• Keyless start control module (if equipped)
• Combination meter
• Steering angle sensor
•BCM
3) Recheck DTC for ESP ®.
Is DTC U1073 detected? Check ESP
® control 
module power and 
ground circuit. If circuits 
are OK, substitute a 
known-good ESP ® 
hydraulic unit / control 
module assembly and 
recheck. Check applicable 
control module power 
and ground circuit. If 
circuit is OK, substitute 
a known-good 
applicable control 
module and recheck.
DTC Detecting Condition
Trouble Area
ECM message data is missing from CAN communication. • CAN communication circuit
•ECM
• ESP® control module
Step Action YesNo
1 Was “Electronic Stability Pr ogram Check” performed? Go to Step 2.Go to “Electronic 
Stability Program 
System Check”.
2 DTC check for ESP®
1) Check DTC for ESP ®.
Is DTC U1100 and DTC U1073 detected together? Go to “DTC U1073: 
Control Module 
Communication Bus 
Off”.Go to Step 3.
3 DTC check for ECM
1) Check DTC for ECM.
Is DTC P1674 detected? Go to “DTC P1674: 
CAN Communication 
(Bus Off Error) in 
Section 1A”.Go to Step 4.  
Page 625 of 1496
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DTC U1126: Lost Communication with Steering Angle Sensor (Reception Error)S7RS0B4604043
Wiring Diagram
Refer to “Wiring Diagram” under “DTC U1073: Control Module Communication Bus Off”.
DTC Detecting Condition and Trouble Area
DTC Troubleshooting4
Check each control module connectors
1) Check connection of connectors of all control modules 
communicating by means of CAN.
2) Check DTC for ESP ®.
Is DTC U1100 detected? Go to Step 5. Check for intermittent 
trouble referring to 
“Intermittent and Poor 
Connection Inspection 
in Section 00”.
5 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of ESP ® control module and 
ECM communicating by means of CAN.
3) Check CAN communication circuit between ESP®  
control module and ECM for open, short and high 
resistance.
Is each CAN communication circuit in good condition? Repair or replace the 
CAN communication 
line.
Go to Step 6.
6 CAN communication circuit check
1) Disconnect connectors of all control modules 
communicating by means of CAN.
2) Check CAN communication circuit between control  modules other than Step 5 for open, short and high 
resistance.
Is each CAN communication circuit in good condition? Go to Step 7. Repair or replace the 
CAN communication 
line.
7 DTC check for ESP®
1) Connect connectors of disconnected control modules 
communicating by means of CAN.
2) Disconnect each connector. •ECM
• Keyless start control module (if equipped)
• Combination meter
• Steering angle sensor
•BCM
3) Recheck DTC for ESP ®.
Is DTC U1100 detected? Check ESP
® control 
module power and 
ground circuit. If circuits 
are OK, substitute a 
known-good ESP ® 
hydraulic unit / control 
module assembly and 
recheck. Check applicable 
control module power 
and ground circuit. If 
circuit is OK, substitute 
a known-good 
applicable control 
module and recheck.
Step Action Yes No
DTC Detecting Condition
Trouble Area
Steering angle sensor message data is missing from CAN 
communication. • CAN communication circuit
• Steering angle sensor
• ESP
® control module
Step Action YesNo
1 Was “Electronic Stability Pr ogram Check” performed? Go to Step 2.Go to “Electronic 
Stability Program 
System Check”.
2 DTC check for ESP®
1) Check DTC for ESP ®.
Is DTC U1126 and DTC U1073 detected together? Go to “DTC U1073: 
Control Module 
Communication Bus 
Off”.Go to Step 3.  
Page 626 of 1496
Downloaded from www.Manualslib.com manuals search engine 4F-52 Electronic Stability Program: 
DTC U1140: Lost Communication with BCM (Reception Error)S7RS0B4604045
Wiring Diagram
Refer to “Wiring Diagram” under “DTC U1073: Control Module Communication Bus Off”.
DTC Detecting Condition and Trouble Area3
Check each control module connectors
1) Check connection of connectors of all control modules 
communicating by means of CAN.
2) Check DTC for ESP ®.
Is DTC U1126 detected? Go to Step 4. Check for intermittent 
trouble referring to 
“Intermittent and Poor 
Connection Inspection 
in Section 00”.
4 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of ESP ® control module, BCM 
and steering angle sensor  communicating by means of 
CAN.
3) Check CAN communication circuit for open, short and  high resistance.
• Between ESP ® control module and BCM
• Between steering angle sensor and BCM
Is each CAN communication circuit in good condition? Repair or replace the 
CAN communication 
line.
Go to Step 5.
5 CAN communication circuit check
1) Disconnect connectors of all control modules 
communicating by means of CAN.
2) Check CAN communication circuit between control  modules other than Step 4 for open, short and high 
resistance.
Is each CAN communication circuit in good condition? Go to Step 6. Repair or replace the 
CAN communication 
line.
6 DTC check for ESP®
1) Connect connectors of disconnected control modules 
communicating by means of CAN.
2) Disconnect each connector. •ECM
• Keyless start control module
• Combination meter
• Steering angle sensor
•BCM
3) Check DTC for ESP ®.
Is DTC U1126 detected? Check ESP
® control 
module power and 
ground circuit. If circuits 
are OK, substitute a 
known-good ESP ® 
hydraulic unit / control 
module assembly and 
recheck. Check applicable 
control module power 
and ground circuit. If 
circuit is OK, substitute 
a known-good 
applicable control 
module and recheck.
Step Action Yes No
DTC Detecting Condition
Trouble Area
BCM message data is missing from CAN communication. • CAN communication circuit
•BCM
• ESP® control module  
Page 627 of 1496
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DTC TroubleshootingStep Action Yes No 1 Was “Electronic Stability Pr ogram Check” performed? Go to Step 2. Go to “Electronic 
Stability Program 
System Check”.
2 DTC check for ESP®
1) Check DTC for ESP ®.
Is DTC U1140 and DTC U1073 detected together? Go to “DTC U1073: 
Control Module 
Communication Bus 
Off”.Go to Step 3.
3 DTC check for BCM
1) Check DTC for BCM.
Is DTC U1073 detected? Go to “DTC U1073 (No. 
1073): Control Module 
Communication Bus Off 
in Section 10B”.Go to Step 4.
4 Check each control module connectors
1) Check connection of connectors of all control modules 
communicating by means of CAN.
2) Check DTC for ESP ®.
Is DTC U1140 detected? Go to Step 4. Check for intermittent 
trouble referring to 
“Intermittent and Poor 
Connection Inspection 
in Section 00”.
5 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of ESP ® control module and 
BCM communicating by means of CAN.
3) Check CAN communication circuit between ESP®  
control module and BCM for open, short and high 
resistance.
Is each CAN communication circuit in good condition? Repair or replace the 
CAN communication 
line.
Go to Step 6.
6 CAN communication circuit check
1) Disconnect connectors of all control modules 
communicating by means of CAN.
2) Check CAN communication circuit between control  modules other than Step 5 for open, short and high 
resistance.
Is each CAN communication circuit in good condition? Go to Step 7. Repair or replace the 
CAN communication 
line.
7 DTC check for ESP®
1) Connect connectors of disconnected control modules 
communicating by means of CAN.
2) Disconnect each connector. •ECM
• Keyless start control module
• Combination meter
• Steering angle sensor
•BCM
3) Check DTC for ESP ®.
Is DTC U1140 detected? Check ESP
® control 
module power and 
ground circuit. If circuits 
are OK, substitute a 
known-good ESP ® 
hydraulic unit / control 
module assembly and 
recheck. Check applicable 
control module power 
and ground circuit. If 
circuit is OK, substitute 
a known-good 
applicable control 
module and recheck.  
Page 642 of 1496
Downloaded from www.Manualslib.com manuals search engine 5-ii Table of Contents
DTC P1878: Torque Converter Clutch Shudder .......................................................... 5A-75
DTC P2762: Torque Converter Clutch (TCC)  Pressure Control Sole noid Control Circuit 
Range /Performance ....................................... 5A-76
DTC P2763: Torque Converter Clutch  Pressure Control Sole noid Control Circuit 
High ................................................................. 5A-78
DTC P2764: Torque Converter Clutch Circuit  Pressure Control Sole noid Control Circuit 
Low ................................................................. 5A-80
Inspection of TCM and Its Circuits .................... 5A-82
TCM Power and Ground Circuit Check ............. 5A-86
Brake Interlock System Inspection .................... 5A-87
Repair Instructions ........... .................................5A-88
Learning Control Initializat ion ............................ 5A-88
A/T Fluid Level Check ....................................... 5A-89
A/T Fluid Change .............................................. 5A-90
Select Lever Components ... .............................. 5A-90
Select Lever Assembly Removal and  Installation ....................................................... 5A-90
Select Lever Knob Installa tion........................... 5A-90
Select Lever Inspection .... ................................. 5A-91
“3” Position Switch Inspec tion ........................... 5A-91
Shift Lock Solenoid Inspec tion .......................... 5A-91
Shift Lock Solenoid Replacement ..................... 5A-91
Select Cable Components ................................ 5A-92
Select Cable Removal and Installation ............. 5A-92
Select Cable Adjustment ................................... 5A-93
Key Interlock Cable Removal and Installation... 5A-93
Transmission Range Sensor (Shift Switch)  Inspection and Adjustment .............................. 5A-95
Output Shaft Speed Sensor Removal and  Installation ....................................................... 5A-96
Output Shaft Speed Sensor  Inspection ............. 5A-96
Input Shaft Speed Sensor Removal and  Installation ....................................................... 5A-96
Input Shaft Speed Sensor Inspection................ 5A-97
Transmission Fluid Temperature Sensor  Removal and Installation ................................. 5A-97
Transmission Fluid Temperature Sensor  Inspection ........................................................ 5A-98
Solenoid Valves (Shift Solenoid Valves and  Timing Solenoid Valve) Removal and 
Installation ....................................................... 5A-98
Solenoid Valves (Shift Solenoid Valves, and  Timing Solenoid Valve) Inspection .................. 5A-99
Pressure Control Soleno id Valves (Pressure 
Control Solenoid and  TCC Pressure Control 
Solenoid) Removal and Inst allation .............. 5A-101
Pressure Control Solenoid Valve Inspection ... 5A-101
Transmission Control Module (TCM)  Removal and Installation ............................... 5A-102
A/T Relay Inspection ....................................... 5A-103
Differential Side Oil Seal  Replacement ........... 5A-103
A/T Fluid Cooler Hoses Replacement ............. 5A-104
Automatic Transaxle Unit  Components........... 5A-105
Automatic Transaxle Unit Dismounting and  Remounting ................................................... 5A-106
Automatic Transaxle Asse mbly Components . 5A-108 Automatic Transaxle Unit
 Disassembly........... 5A-110
Oil Pump Assembly Components ................... 5A-121
Oil Pump Assembly Disassembly and  Reassembly .................................................. 5A-122
Oil Pump Assembly Inspection ....................... 5A-122
Direct Clutch Assembly Components.............. 5A-124
Direct Clutch Assembly Preliminary Check ..... 5A-124
Direct Clutch Assembly Disassembly and  Reassembly .................................................. 5A-125
Direct Clutch Assembly Inspection.................. 5A-127
Forward and Reverse Clutch Assembly  Components .................................................. 5A-128
Forward and Reverse Clutch Assembly  Preliminary Check ......................................... 5A-129
Forward and Reverse Clutch Assembly  Disassembly and Reassembly ...................... 5A-129
Forward and Reverse Clutch Assembly  Inspection ...................................................... 5A-133
2nd Brake Piston Assembly Components ....... 5A-134
2nd Brake Piston Assembly Disassembly and  Reassembly .................................................. 5A-134
Transaxle Rear Cover (O/D and 2nd Coast  Brake Piston) Assembly Components........... 5A-135
Transaxle Rear Cover (O/D and 2nd Coast  Brake Piston) Assembly Disassembly and 
Reassembly .................................................. 5A-136
Transaxle Rear Cover (O/D and 2nd Coast  Brake Piston) Assembly Inspection............... 5A-137
Countershaft Assembly Co mponents.............. 5A-138
Countershaft Assembly Disassembly and  Reassembly .................................................. 5A-138
Valve Body Assembly Components ................ 5A-139
Valve Body Assembly Disassembly and  Reassembly .................................................. 5A-140
Differential Assembly Components ................. 5A-141
Differential Assembly Disassembly and  Reassembly .................................................. 5A-142
Differential Assembly Inspection ..................... 5A-143
Torque Converter Housing Disassembly and  Reassembly .................................................. 5A-144
Transaxle Case Disassembly and  Reassembly .................................................. 5A-146
Automatic Transaxle Unit Inspection and  Adjus
 tment .................................................... 5A-147
Automatic Transaxle Unit Assembly ............... 5A-150
Specifications .................. .................................5A-167
Tightening Torque Specifications .................... 5A-167
Special Tools and Equipmen t .........................5A-168
Recommended Service Material ..................... 5A-168
Special Tool .................................................... 5A-168
Manual Transmission/Tr ansaxle ............ 5B-1
General Description .............................................5B-1
Manual Transaxle Construction and Servicing .... 5B-1
Diagnostic Information and Procedures ............5B-3 Manual Transaxle Symptom  Diagnosis............... 5B-3
Repair Instructions ............ ..................................5B-3
Manual Transaxle Oil Change............................. 5B-3
Differential Side Oil Seal Replacement ............... 5B-4  
Page 645 of 1496
Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle:  5A-1
Transmission / Transaxle
Automatic Transmission/Transaxle
Precautions
Precautions in Diagnosing TroubleS7RS0B5100001
• Do not disconnect couplers from TCM, battery cable from battery, TCM ground wire harness from engine or 
main fuse before checking  the diagnostic information 
(DTC, freeze frame data, etc.) stored in TCM memory. 
Such disconnection will clea r memorized information 
in TCM memory.
• Diagnostic information stored in TCM memory can be  cleared as well as checked by using SUZUKI scan 
tool or 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.
It is indistinguishable wh ich module turns on MIL 
because not only ECM but also TCM turns on MIL.
Therefore, check both ECM and TCM for DTC when 
MIL lights on.
When checking TCM 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 TCM.
– Generic scan tool displays DTC detected by each  of ECM and TCM simultaneously.
• Using SUZUKI scan tool the diagnostic information  stored in TCM memory can be checked and cleared 
as well. Before its use, be  sure to read Operator’s 
Manual supplied with it carefully to have good 
understanding of its functions and usage.
• Be sure to read “Precautions for Electrical Circuit  Service in Section 00” befo re inspection and observe 
what is written there.
• TCM replacement
– When substituting a known-good TCM, check that all relays and actuators have resistance of 
specified value.
Neglecting this check may result in damage to good 
TCM.
• Communication of ECUs , ECM, TCM, ABS control 
module, keyless start control module and BCM is 
established by CAN (Controller Area Network). 
Therefore, handle CAN communication line with care 
referring to “Precaution for CAN Communication 
System in Section 00”.
Precautions for Disassembly and ReassemblyS7RS0B5100002
When repairing automatic transaxle, it is necessary to 
conduct the on-vehicle test to investigate where the 
cause of the trouble lies first.
Then whether overhaul should be done or not is 
determined. If the transaxle is disassembled without 
such preliminary procedure, not only the cause of the 
trouble would be unknown, but also a secondary trouble 
may occur and often time would be wasted.
As the automatic transaxle consists of high precision 
component, the following cautions should be strictly 
observed when handling its parts in disassembly and 
reassembly.
• Disassembling valve body  assembly is prohibited 
essentially. However, a few parts can be 
disassembled. When disassembling valve body 
component parts, confirm whether their parts are 
allowed to disassemble or not referring to “Valve Body 
Assembly Disassembly and Reassembly”.
• When component part of forward clutch, direct clutch,  2nd brake and/or O/D and 2nd coast brake, namely 
clutch disc, brake disc, retaining plate and/or 
separator plate, have been replaced, all learned 
contents, which have been stored in TCM memory by 
executing learning control, should be initialized 
referring to “Learning Control Initialization”.
• Make sure to wash dirt off from the transaxle so that  no such dirt will enter  the transaxle during 
dismounting and remounting.
• Select a clean place free from dust and dirt for  overhauling.
• Place a rubber mat on the work bench to protect parts  from damage.
• Work gloves or shop cloth should not be used. (Use a  nylon cloth or a paper towel.)
• When separating the case joint, do not pry with a  screwdriver or such but tap with a plastic hammer 
lightly.
• Make sure to wash dirt off from the transaxle so that  no such dirt will enter  the transaxle during 
disassembly and reassembly.
• Wash the disassembled parts in ATF (Automatic  Transaxle Fluid) or kerosene  (using care not to allow 
ATF or kerosene to get on your face, etc.) and confirm 
that each fluid passage is not clogged by blowing air 
into it. But use kerosene to wash the discs, resin 
washers and rubber parts.
• Replace each gasket, oil seal and O-ring with a new  one.
• Apply ATF to sliding or  rotating parts before 
reassembly.  
Page 652 of 1496
Downloaded from www.Manualslib.com manuals search engine 5A-8 Automatic Transmission/Transaxle: 
Brake Interlock System ConstructionS7RS0B5101004
Shift Lock Solenoid Control
This system consists of shift lock solenoid control 
system and interlock cable control system.
The shift lock solenoid cont rol system is so designed 
that the select lever can not be shifted from “P” range 
position unless ignition switch is turned to “ON” or “ACC” 
position and the brake pedal is depressed.
And interlock cable control system is so designed that 
select lever cannot be shifted from “P” range position 
unless ignition switch is turned to “ACC” or “ON” 
position. Also, ignition key cannot be pulled out of key 
slot unless select le ver is in “P” range.
Shift Lock Solenoid Manual Release
When push down shift lock solenoid valve release button 
(1), select lever can be moved from “P” range position to 
another range even without depressing the brake pedal. 
(To shift select lever from “P” range to any other position, 
turn ignition switch to ACC or ON position.)
A/T Diagnosis General DescriptionS7RS0B5101005
This vehicle is equipped with an electronic transaxle 
control system, which controls the automatic shift up and 
shift down timing, TCC operation, etc. suitably to vehicle 
driving conditions.
TCM has an On-Board Diagnosis System which detects 
a malfunction in this system.
When diagnosing a trouble in transaxle including this 
system, 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 “A/T System Check” to obtain 
correct result smoothly.
On-Board Diagnostic System DescriptionS7RS0B5101006
For automatic transaxle co ntrol system, TCM has the 
following functions. Refer to “Inspection of TCM and Its 
Circuits”.
• When ignition switch is turned ON with no malfunction  in A/T control system is detected, transmission 
warning light (1) lights for about 2 seconds after 
ignition switch is turned ON and then goes OFF for 
bulb check.
• When TCM detects a malfunction in A/T control  system, it indicates  transmission warning light (1) and 
stores malfunction DTC in its memory.
• It is possible to communicate with TCM through data  link connector (DLC) (3) by using SUZUKI scan tool 
(2). Diagnostic information can be checked and 
erased by using SUZUKI scan tool.
• For information about the following items, refer to “On- Board Diagnostic System De scription in Section 1A”
– Warm up cycle
– Driving cycle
– 2 Driving cycle detection logic
– Pending DTC
– Freeze frame data
1
I6RS0C510001-01
3
2
1
I6RS0C510002-01  
Page 715 of 1496
Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle:  5A-71
DTC P1774: CAN Communication Bus OffS7RS0B5104038
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Connect scan tool to DLC with  ignition switch turned OFF.
2) Clear DTC.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
REDWHTE03-6E03-12
1
4
7
REDWHT
2
[C]
[B]
G37E46
1234567
1234567
891011
891011
121314 121314
151617
18
19202122 [E]65
1615 14131211 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
[F]
REDWHTC37-13C37-12REDWHTC34-17C34-7
3
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[D] [A]
G49
E23-3E23-18
5
REDWHTG28-7G28-9REDWHTG49-19G49-18
6
REDWHTE03-10E03-8
G37-4G37-2
REDWHTE46-1E46-2REDWHTREDWHTG28-8G28-10
RED/BLKWHT/BLKG37-3G37-1
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
I6RS0C510008-01
1. ABS control module [A]: Terminal arrangement of ABS control module connector (viewed from terminal side)
2. ECM [B]: Terminal arrangement of BCM connector (viewed from harness side)
3. TCM [C]: Terminal arrangement of ECM connector (viewed from harness side)
4. BCM [D]: Terminal arrangement of combination meter connector (viewed from harness side)
5. Combination meter [E]: Terminal arrangement of TCM connector (viewed from harness side)
6. Keyless start control module [F]: Terminal arrangement of Keyless start control module connector (viewed from harness side)
7. DLC
DTC detecting condition Trouble area
Transmission error that is incons istent between transmission data and 
transmission monitor (CAN bus monitor) data is detected more than 7 
times continuously. •ECM
•BCM
•TCM
• ABS control module
• Combination meter
• Keyless start control module
• CAN circuit