power steering wiring diagram SUZUKI SWIFT 2005 2.G Service Workshop Manual

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Electronic Stability Program Wiring Circuit DiagramS7RS0B4602002
WHT/BLU
WHT/BLUGRN
M
12V3
12V
5V
12V
VCC
WHT/RED
WHT
7
REDWHT
12V
12V
6 19
20
21RED/BLK
RED/BLK
GRN/WHT
PNK
12V
GRN/BLK
5V
LT GRN/RED
BLK/ORN
4
16
17
186
22
6 29
30 34
36
38
33
35
32
31
6
6 37
BLK
BLK
RED/BLKRED12V
BLKWHT
23
WHT/BLKWHT
12V
BLKWHT
24
BLKWHTLT GRN/BLKLT GRN
12V
25
BLKWHTBRN
12V
26YEL
12V
98101211
13
6BLK/ORN
1
227
5
WHT/REDGRN/ORN
BLK/ORN
REDWHT
REDWHT
PPL/WHT
6
REDWHT
REDWHT
6
REDWHT
RED/BLK
PPL/WHT
28
39
15 14
BLU/RED
GRN/ORN
12V
12V
E85-35
E85-33
E85-13E85-44
E85-46
E85-29E85-25
E85-37
E85-31
E85-14E85-15
E85-12E85-11
E85-16
E85-47
E85-3
E85-32
E85-1
E85-2
E85-5E85-6
E85-7
E85-42
RED/BLKWHT/BLK
I7RS0B460007-02
1. Battery 14. Junction connector 27. DLC
2. Relay box 15. Keyless start control module 28. To SDM
3. Ignition switch 16. Stop lamp switch 29. ESP® hydraulic unit / control module
4. Junction block assembly 17. Stop lamp 30. “ESP OFF” switch
5. Steering angle sensor 18. ECM 31. Power control unit
6. CAN driver 19. BCM (included in junction block assembly) 32. Internal memory

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ABS Warning Lamp Does Not Come ON at Ignition Switch ONS7RS0B4604048
Wiring Diagram4
Check ESP ® control module power supply circuit
1) Turn ignition switch to OFF position.
2) Check for proper connection to ESP ® control module
connector at terminals “E85-1” and “E85-32”.
3) If OK, then turn ignition switch to ON position and measure voltage between each terminal of “E85-1”,
“E85-32” and vehicle body ground.
Are they 10 – 14 V? Go to Step 5. “WHT/BLU” and/or
“WHT/RED” circuit
open.
5 Check ESP ® control module ground circuit
1) Turn ignition switch to OFF and measure resistance between each terminal of “E85-16”, “E85-47” and vehicle
body ground.
Is resistance less than 2
Ω? Go to Step 6.
Ground circuit for ESP®
control module open or
high resistance.
6 CAN communication circuit check
1) Check CAN communication circuit between combination
meter and ESP ® control module referring to “DTC
U1073: Control Module Communication Bus Off”.
Is CAN communication circuit in good condition? Substitute a known-
good combination meter
and recheck. If warning
lamp remains ON,
substitute a known-
good ESP
® hydraulic
unit / control module
assembly and recheck. Repair or replace.
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
WHTGRN
3
E85-13
E85-44REDWHT6 5E46-1E46-2
4 10
6
E85-16
E85-47BLKBLK
8
9
BLK/ORN
REDWHT
REDWHT
G37-4G37-2
G28-10G28-8
G28-16
12V
12VE85-32E85-1
E85-35
WHT/REDWHT/BLU
GRN/ORN
6
2
1
7 1112[B]
G37
E46124
53
67
891011121314124
53
67
891011
1213141516171819202122
[C] G28
12345678910111213141516
17181920212223242526272829303132
G28-31
RED/BLK
I6RS0B460010-01
[A]: ESP ® control module connector (viewed
from terminal side) 3. Ignition switch 8. ABS warning lamp
[B]: BCM connector (viewed from harness side) 4. Junction block assembly 9. Lamp driver module
[C]: Combination meter connector (viewed from harness side) 5. BCM (included in junction block
assembly) 10. ESP
® hydraulic unit / control module
assembly
1. Battery 6. CAN driver11. Junction connector
2. Main fuse box 7. Combination meter12. To steering angle sensor

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Serial Data Link Circuit CheckS7RS0B4604012
Wiring Diagram
Inspection
[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
47WHTGRN
3
E85-13REDWHT6 5E46-1E46-2
4
10
6
E85-16
E85-47BLKBLK
8
9
BLK/ORN
REDWHT
REDWHT
G37-4G37-2
G28-10G28-8
G28-16
G28-31
12V
12VE85-32E85-1
E85-35
WHT/REDWHT/BLU
GRN/ORN
6
2
1
7 1415 [B]
G37
E46
124
53
67
891011121314124
53
67
891011
1213141516171819202122
[C] G28
12345678910111213141516
17181920212223242526272829303132
12V
11
PPL/WHT
PPL/WHT
E85-33
E85-44
12
13
WHTWHT/REDB
G G1
RED/BLK
I6RS0B460012-01
[A]: ESP
® control module connector (viewed
from terminal side) 4. Junction block assembly 10. ESP
® hydraulic unit / control module assembly
[B]: BCM connector (viewed from harness side) 5. BCM (included in junction block
assembly) 11. Data link connector (DLC)
[C]: Combination meter connector (viewed from harness side) 6. CAN driver 12. To SDM
1. Battery 7. Combination meter 13. To ECM and P/S control module
2. Main fuse box 8. ESP ® warning lamp 14. Junction connector
3. Ignition switch 9. Lamp driver module 15. To steering angle sensor
Step Action YesNo
1 Check ESP ® warning lamp
1) Turn ignition switch to ON position.
Does ESP
® warning lamp come ON? Go to Step 2. Go to Step 6.
2 Check fuse
1) Turn ignition switch to OFF position.
Are main fuses for good condition? Go to Step 3. Replace fuse and check
for short.
3 Check ESP ® control module power supply circuit
1) Disconnect ESP ® control module connector.
2) Check for proper connection to ESP ® control module
connector at terminal “E85-35”.
3) If OK, then turn ignition switch to ON position and measure voltage between terminal “E85-35” and vehicle
body ground.
Is it 10 – 14 V? Go to Step 4.
“GRN/ORN” wire circuit
open.

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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

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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.

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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.

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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

Downloaded from www.Manualslib.com manuals search engine Table of Contents 6- i
6
Section 6
CONTENTS
Steering
Precautions ................................................. 6-1
Precautions............................................................. 6-1
Precautions on Steering........................................ 6-1
Steering General Diagnosi s.................... 6A-1
Precautions........................................................... 6A-1
Precautions for Steering Diagnosis ..................... 6A-1
Diagnostic Information and Procedures ............ 6A-2 Steering Symptom Diagnosis .............................. 6A-2
Steering Wheel and Column ................... 6B-1
Precautions........................................................... 6B-1
Service Precautions of Steering Wheel and Column.............................................................. 6B-1
General Description ............................................. 6B-1 Steering Wheel and Column Construction .......... 6B-1
Diagnostic Information and Procedures ............ 6B-2 Checking Steering Column for Accident Damage ............................................................ 6B-2
Repair Instructions .............................................. 6B-3 Steering Wheel and Column Construction .......... 6B-3
Steering Wheel Removal and Installation ........... 6B-4
Contact Coil Cable Assembly Removal and Installation ......................................................... 6B-5
Centering Contact Coil Cable Assembly ............. 6B-6
Contact Coil Cable Assembly Inspection ............ 6B-6
Steering Angle Sensor Removal and Installation ......................................................... 6B-6
Steering Angle Sensor Inspection ....................... 6B-6
Steering Column Removal and Installation ......... 6B-7
Steering Column Inspecti on ................................ 6B-8
Ignition Switch Cylinder Assembly Removal and Installation (Non- Keyless Start Model)...... 6B-9
Steering Lock Assembly (Ignition Switch) Removal and Installation................................... 6B-9
Steering Lower Shaft Removal and Installation ....................................................... 6B-10
Specifications ..................................................... 6B-11
Tightening Torque Specifications ...................... 6B-11
Special Tools and Equipmen t ........................... 6B-11
Special Tool ...................................................... 6B-11
Power Assisted Steering System........... 6C-1
Precautions........................................................... 6C-1 Steering System Note .........................................6C-1
Precautions in Diagnosing Troubles ...................6C-1
General Description .............................................6C-2 P/S System Description ......................................6C-2
EPS Diagnosis General Descr iption ...................6C-3
On-Board Diagnostic System Description ...........6C-3
Schematic and Routing Diagram ........................6C-4 EPS System Wiring Circuit Diagram ...................6C-4
Diagnostic Information and Procedures ............6C-5 EPS System Check .............. ...............................6C-5
“EPS” Warning Light Check . ...............................6C-8
DTC Check..........................................................6C-8
DTC Clearance ...................................................6C-9
DTC Table ...........................................................6C-9
Scan Tool Data .................................................6C-11
Visual Inspection ...............................................6C-12
P/S System Symptom Diagnosis ......................6C-12
Serial Data Link Circuit Check ..........................6C-13
“EPS” Warning Light Do es Not Come ON with
Ignition Switch Turn ed ON before Engine
Starts ...............................................................6C-15
“EPS” Warning Light Remains ON Steady after Engine Starts ..........................................6C-16
DTC C1113: Steering Torque Sensor (Main and Sub) Circuit Correlation ............................6C-17
DTC C1114: Steering Torque Sensor Reference Power Supply Circuit .....................6C-19
DTC C1117: Steering Torque Sensor Failure Signal Circuit Low ...........................................6C-21
DTC C1118: Steering Torque Sensor Failure Signal Circuit High...........................................6C-22
DTC C1119: Steering Torque Sensor Power Supply Circuit ..................................................6C-24
DTC C1121 / C1123 / C1124: VSS Circuit
Failure .............................................................6C-26
DTC C1122: Engine Speed Signal....................6C-28
DTC C1141 / C1142 / C1143 / C1145: P/S Motor Circuit Failure ........................................6C-30
DTC C1153: P/S Control Module Power Supply Circuit Voltage Low .............................6C-32
DTC C1155: P/S Control Module Failure ..........6C-33
P/S Control Module Power Supply and Ground Circuit Check ......................................6C-34
Inspection of P/S Control Module and Its Circuits ............................................................6C-35

Downloaded from www.Manualslib.com manuals search engine 6C-4 Power Assisted Steering System:
Schematic and Routing Diagram
EPS System Wiring Circuit DiagramS7RS0B6302001
M
5V
BRNRED/
BLU
BLK
RED
WHT
BLU
GRN
BRN YEL
E52-11
E52-14E52-12
E23-4
E23-26
E23-25 E51-1
E51-2
E52-18
E53-5
E53-7
E52-6
E52-8
E53-2
E52-9
E52-16
E52-19
GRY
PPL/WHT
[A ]
[E ]
12 3
4 5 67
89
11
10
12 13
141516
17 18 19 20
1
2
[B ][C ]
1210 9 8 7654 3 21
16 15 14 13 12 11
26 25 24 2322 21 20 19 18 17
32 31 30 29 28 27
[D]
5V
PPL
E52-4
11
12
13 14
15
10
9
16
12V
5V
5V
12V
REDE52-20E53-6
E53-4
E53-1
7654321
5
REDRED/
BLKWHT
6WHTWHT/BLKWHTBLK
12V
12V
17BLK
GRY
LT GRN
/BLK
E52-1
E52-5
E49-1
GRNGRNWHTBLK
WHY
G28-25G28-31
RED/BLK
18
3
4
4
7 8
4
4
1 2
4
E49-2BLK
I7RS0B630002-01
[A]: Connector “E52” (viewed from harness side) 4. Fuse 12. P/S motor
[B]: Connector “E49” (viewed from harness side ) 5. Left-front wheel speed sensor 13. Shield
[C]: Connector “E51” (viewed from harness side) 6 . Right-front wheel speed sensor 14. Torque sensor
[D]: Connector “G28” (viewed from harness side) 7. Combination meter 15. Torque sensor amplifier
[E]: Connector “E53” (viewed from harness side) 8. “EPS” warning light16. To ECM, BCM, Air bag SDM and ABS control module assembly
1. Main fuse box 9. Date link connector (DLC) 17. ABS/ESP ® control module
2. Ignition switch 10. ECM18. Individual circuit fuse box No.1
3. Junction block assembly 11. P/S control module

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-13
Serial Data Link Circuit CheckS7RS0B6304009
CAUTION!
Be sure to perform “EPS System Check” before starting “Troubleshooting”.

Wiring DiagramVehicle pulls to one side
during straight driving
Poor performance of torque sensor
Check torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Steering gear case assembly faulty Replace.
Poor recovery after turns Poor performance of torque sensor Check torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Steering column faulty Replace.
Abnormal noise P/S motor (built in steering gear case
assembly) malfunction Replace steering gear case assembly.
No idle up P/S control module faulty Check P/S control module referring to
“Inspection of P/S Control Module and Its
Circuits”.
Condition Possible cause Correction / Reference Item
MBLK
RED
E52-11 E51-1
E51-2PPL/WHT
[A ]
12
3
4 5 67
89
11
10
12 13
141516
17 18 19 2010 9 8 7654 3 21
16 15 14 13 12 11
26 25 24 2322 21 20 19 18 17
32 31 30 29 28 27
[C]
8
79
12V
[B ]
11
12
GRY
LT GRN
/BLK
E52-1
E52-5
E49-1
GRNGRNWHTBLK
WHY
G28-25G28-31
RED/BLK
10
3
4
4
5 6
4
4
1 2
4
E49-2BLK
I7RS0B630003-01
[A]: Connector “E52” (viewed from harness side) 3. Junction block assembly 8. P/S control module
[B]: Connector “E49” (viewed from harness side) 4. Fuse 9. T o ECM, BCM, Air bag SDM control module and ABS control
module assembly
[C]: Connector “G28” (viewed from harness side) 5. Comb ination meter 10. Individual circuit fuse box No.1
1. Main fuse box 6. “EPS” warning light 11. Serial data circuit
2. Ignition switch 7. Date link connector (DLC)