2008 SUZUKI SWIFT steering

Downloaded from www.Manualslib.com manuals search engine 4F-20 Electronic Stability Program:
NOTE
•{: Activated
• X: Deactivated
• *1: If two or more wheel speed sensor are defective, ABS warning lamp, EBD warning lamp and ESP ® warning lamp are lit and all the control functions are deactivated. If one wheel speed sensor is
defective, ABS warning lamp and ESP ® warning lamp are lit and ABS and TCS / stability control are
deactivated.
• *2: ESP ® OFF mode is cancelled and all control functions are activated.
• *3: EBD control function is activated only if po wer supply circuit is little low voltage malfunction.

Scan Tool DataS7RS0B4604024
The parameter data below are values measured with the scan tool when the normally operating vehicle is under the
following conditions. When taking measurements for comparis on by using the scan tool, be sure to check that the
vehicle is under the following conditions.
• Apply parking brake and block wheels.
• Ignition switch ON.
• Turn OFF air conditioning (if equipped).
• Set the wheel in straight-ahead position and hands off steering wheel.
• Turn OFF all electric loads (except ignition).
• Check that there is no DTC.
Scan Tool Data Definition
Battery Volt (V): Battery Voltage is an analog input
signal read by the ESP ® control module. Certain
ESP ® control module functions will be modified if the
battery voltage falls below or rises above
programmed thresholds.
Pump Motor Driver (V): This parameter indicates the
operational condition of the pump motor driver
(transistor).
RF Wheel Speed, LF Wheel Speed, RR Wheel Speed and LR Wheel Speed (km/h, MPH): Wheel speed
is ESP ® control module internal parameter. It is
computed by reference puls es from the wheel speed
sensor. Brake Switch (ON, OFF):
This switch signal informs
the ESP ® control module whether the brake is active
or not.
Master Cyl Press (MPa): Brake fluid pressure from
brake master cylinder.
G Sensor (lateral) (G): Lateral acceleration is
measured by yaw rate / G sensor assembly and
output to ESP ® control module by pulse signal.
Yaw rate sensor (Deg/s): Yaw rate sensor is measured
by yaw rate / G sensor assembly and output to
ESP® control module by pulse signal.
Steering angle Sen ( °): Steering wheel rotation angle
is measured by steering angle sensor and output to
ESP® control module by pulse signal.
Scan Tool Data Standards Condition
Battery Voltage 10.0 – 16.0 V —
Pump Motor Driver 0.0 V —
RF Wheel Speed 0 km/h, 0.0 MPH Veh icle is in stationary condition.
LF Wheel Speed 0 km/h, 0.0 MPH Veh icle is in stationary condition.
RR Wheel Speed 0 km/h, 0.0 MPH Vehic le is in stationary condition.
LR Wheel Speed 0 km/h, 0.0 MPH Veh icle is in stationary condition.
Brake Switch ON Brake pedal is depressed
OFF Brake pedal is released
Master Cyl Press 0 ± 0.8 MPa Brake pedal is released
G Sensor (lateral) 0 ± 0.1 G Vehicle is on the level
Yaw rate sensor 0 ± 4 deg/s Vehicle is on the level
Steering angle Sen 0 ± 3 ° Front wheels are in straight-ahead
position
Stability control INACTIVE Stability control system is not working
TCS control (brake) INACTIVE Brake function by TCS is not working
TCS control (engine) INACTIVE Torque control by TCS is not working
ESP ® off state (cont) ESP®
ON ESP
® OF
F switch is OFF condition
ESP® OFF ESP ® OFF switch is ON condition
Steering angle Sen Neutral Front wheels are in straight-ahead
position

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-21
Stability control (ACTIVE, INACTIVE): This indicates
stability control in acti vation / deactivation.
TCS control (brake) ( ACTIVE, INACTIVE): This
indicates brake function of TCS in activation /
deactivation.
TCS control (engine) (ACTIVE, INACTIVE): This
indicates torque control of TCS in activation /
deactivation. ESP®
off state (cont) (ESP ® ON, ESP ® OFF): State
of ESP ® OFF switch.
Steering angle Sen (Neutral, NON newtral): This
indicates steering wheel angle measured by steering
angle sensor is in straight-ahead or not.
Visual InspectionS7RS0B4604059
Check the following parts and systems visually.
ESP ® Warning Lamp Does Not Come ON at Ignition Switch ONS7RS0B4604008
Wiring Diagram
Circuit Description
Operation (ON/OFF) of ESP ® warning lamp is controlled by ESP ® control module through lamp driver module in
combination meter.
If ESP ® system is in good condition, ESP ® control module turns ESP ® warning lamp ON at the ignition switch ON,
keeps it ON for 2 seconds and then turns it OFF. If an abnormality in the system is detected, ESP ® warning lamp is
turned ON continuously by ESP ® control module. Also, it is turned ON continuously by lamp driver module when the
connector of ESP ® control module is disconnected.Inspection Item Referring section
Battery Level, leakage “Battery Description in Section 1J”
Connectors of electric wire
harness Disconnection, friction“Intermittent and Poor Connec
tion Inspection in Section
00”
Fuses Burning
Brake fluid Level, leakage “Brake Fluid Level Inspection in Section 4A”
Other parts that can be checked visually
[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
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G28-31
RED/BLK
I6RS0B460010-01
[A]: ESP ® control module connector (viewed from terminal side) 3. Ignition switch 8. ESP ® 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 driver 11. Junction connector
2. Main fuse box 7. Combination meter 12. To steering angle sensor

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-23
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

Downloaded from www.Manualslib.com manuals search engine 4F-24 Electronic Stability Program:
Circuit Description
Operation (ON/OFF) of ABS warning lamp is controlled by ESP® control module through lamp driver module in
combination meter.
If antilock brake system is in good condition, ESP ® control module turns ABS warning lamp ON at the ignition switch
ON, keeps it ON for 2 seconds and then turns it OFF. If an abnormality in the system is detected, ABS warning lamp is
turned ON continuously by ESP ® control module. Also, it is turned ON continuously by lamp driver module when the
connector of ESP ® control module is disconnected.
Troubleshooting
Refer to “Troubleshooting” under “ESP ® Warning Lamp Does Not Come ON at Ignition Switch ON”.
ABS Warning Lamp Comes ON SteadyS7RS0B4604049
Wiring Diagram
Refer to “Wiring Diagram” under “ABS Warning Lamp Does Not Come ON at Ignition Switch ON”.
Circuit Description
Refer to “Circuit Description” u nder “ABS Warning Lamp Does Not Co me ON at Ignition Switch ON”.
Troubleshooting
Refer to “Troubleshooting” under “ESP ® Warning Lamp Comes ON Steady”.
EBD Warning Lamp (Brake Warning Lamp) Comes ON SteadyS7RS0B4604050
Wiring Diagram
[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
E85-13
E85-44REDWHT8 5E46-1E46-2
4
13
8
E85-16
E85-47BLKBLK
1110
12
BLK/ORN
REDWHT
REDWHT
G37-4G37-2
G28-10G28-8
G28-16
12V
12VE85-32E85-1
E85-35
WHT/REDWHT/BLU
GRN/ORN
8
2
1
9 1415
[B]
G37
E46
124
53
67
891011121314124
53
67
891011
1213141516171819202122
[C] G28
12345678910111213141516
17181920212223242526272829303132
12V
12V
6
7E46-5
L01-6
RED/BLK
RED/BLK
G28-31
RED/BLK
I6RS0B460011-01
[A]: ESP ® control module connector (viewed from terminal side) 4. Junction block assembly 10. EBD warning lamp (brake warning lamp)
[B]: BCM connector (viewed from harness side) 5. BCM (included in junction block
assembly) 11. ABS warning lamp
[C]: Combination meter connector (viewed from harness side) 6. Brake fluid level switch 12. Lamp driver module 1. Battery 7. Parking brake switch 13. ESP ® hydraulic unit / control module
assembly
2. Main fuse box 8. CAN driver 14. Junction connector
3. Ignition switch 9. Combination meter 15. To steering angle sensor

Downloaded from www.Manualslib.com manuals search engine 4F-26 Electronic Stability Program:
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
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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.

Downloaded from www.Manualslib.com manuals search engine 4F-34 Electronic Stability Program:
DTC C1024: Steering Angle Sensor Circuit FailureS7RS0B4604029
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC C1027: ESP® OFF Switch Circuit FailureS7RS0B4604030
Wiring Diagram 6
Check wheel speed sensor
1) Refer to “Front / Rear Wheel Speed Sensor On-Vehicle
Inspection”, check output voltage or waveform.
Is specified voltage and/or waveform obtained? Substitute a known-
good ESP
® hydraulic
unit / control module
assembly and recheck. Replace wheel speed
sensor and recheck.
Step
Action YesNo
DTC Detecting Condition Trouble Area
• Steering angle sensor internal defect is detected by CPU in steering angle sensor.
• Steering angle sensor signal is out of specified range. • 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) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP ®.
Are DTC U1073 and/or U1126 detected? Go to applicable DTC
diag. flow.
Go to Step 3.
3 Check sensor calibration
1) Calibrate steering angle sensor referring to “Sensor
Calibration”.
2) Clear all DTC(s) and check DTC for ESP ®.
Is DTC C1024 still detected? Go to Step 4.
Steering angle sensor
calibration was
incompleted.
4 Check steering angle sensor
1) Check steering angle sensor referring to “Steering Angle
Sensor On-Vehicle Inspection”.
Is it good condition? Substitute a known-
good ESP
® hydraulic
unit / control module
assembly and recheck. Replace steering angle
sensor.
[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
LT GRN/REDBLK/ORN
12V
E85-7
1 2
I6RS0B460018-01
[A]: ESP
® control module connector (viewed from terminal side) 1. ESP ® OFF Switch 2. ESP ® hydraulic unit control module assembly

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

Downloaded from www.Manualslib.com manuals search engine 4F-38 Electronic Stability Program:
DTC Troubleshooting
DTC C1038: Steering Angle Sensor Detect Rolling Counter Failure from ESP® Control ModuleS7RS0B4604034
DTC Detecting Condition and Trouble AreaStep Action Yes No
1 Was “Electronic Stability Pr ogram Check” performed? Go to Step 2 Go to “Electronic
Stability Program
System Check”.
2 Check fuse
1) Check circuit fuses for steering angle sensor and its
circuit.
Is it good condition? Go to Step 3. Replace fuse and check
for short circuit to
ground.
3 Check steering angle sensor power supply circuit
1) Turn ignition switch to OFF position.
2) Disconnect steering angle sensor connector.
3) Check for proper connection to steering angle sensor
connector terminals at “G50-1”, “G50-2” and “G50-3”.
4) If OK, then measure voltage between connector terminal “G50-3” and vehicle body ground.
Is it 10 – 14 V? Go to Step 4. “WHT/RED” wire circuit
open.
4 Check steering angle sensor power supply circuit
1) Measure voltage between connector terminal “G50-1”
and vehicle body ground with ignition switch turned ON.
Is it 10 – 14 V? Go to Step 5. “GRN/ORN” wire circuit
open.
5 Check steering angle sensor ground circuit
1) Turn ignition switch to OFF position.
2) Measure resistance between connector terminal “G50-2”
and vehicle body ground.
Is resistance less than 2
Ω? Go to Step 6. “BLK/ORN” wire circuit
open or high resistance.
6 Check steering angle sensor
1) Connect steering angle sensor connector.
2) Check steering angle sensor referring to “Steering Angle
Sensor On-Vehicle Inspection”.
Is it good condition? Substitute a known-
good ESP
® hydraulic
unit / control module
assembly and recheck. Substitute a known-
good steering angle
sensor and recheck.
DTC Detecting Condition
Trouble Area
ESP ® control module rolling counte r failure is detected by
steering angle sensor. • CAN communication circuit
• Steering angle sensor
• ESP
® control module