2008 SUZUKI SWIFT u1073

Downloaded from www.Manualslib.com manuals search engine 4E-25 ABS:
DTC U1073: Control Module Communication Bus OffS7RS0B4504018
Wiring Diagram
DTC Detecting Condition
Transmission error that is inconsistent between transmission data and transmission monitor (CAN bus monitor) data is
detected more than 7 times continuously.
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
I6RS0C450015-01
[A]: ABS control module connector (viewed from
terminal side) [F]: Keyless start control module connector
(viewed from harness side) 5. Combination meter
[B]: BCM connector (viewed from harness side) 1. ABS hydraulic unit / control module assembly 6. Keyless start control module (if equipped)
[C]: ECM connector (viewed from harness side) 2. ECM 7. Data link connector (DLC)
[D]: Combination meter connector (viewed from harness side) 3. TCM
[E]: TCM connector (viewed from harness side) 4. BCM

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-26
DTC TroubleshootingStep Action Yes No 1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 1) Check connection of connectors of all control modules communicating by means of CAN.
2) Recheck DTC.
Is DTC U1073 indicated? Go to Step 3. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00” in related manual.
3 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 insulation of
CAN communication
line circuit referring to
“Precaution for CAN
Communication System
in Section 00” in related
manual.
4 1) Turn ignition switch to OFF position.
2) Connect connector of disconnected control modules communicating by means of CAN.
3) Disconnect connector from any one of control modules other than BCM and ABS control module.
4) Recheck ABS contro l module for DTC.
IS DTC U1073 detected? Disconnected
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 ABS control
module each time
connector is
disconnected.
When DTC U1073 is not
detected by ABS
module while checking
in this way, go to
description under “NO”
below. If DTC U1073 is
detected by ABS control
module, go to Step 5.Check power and
ground circuit of control
module disconnected in
Step 3) circuit is OK,
substitute a know-good
control module
disconnected in Step 3)
and recheck.
5 1) Substitute a know-good BCM and recheck ABS control module for DTC.
IS DTC U1073 detected? Substitute a know-good
ABS control module and
recheck.
End.

Downloaded from www.Manualslib.com manuals search engine 4E-27 ABS:
DTC U1100: Lost Communication with ECM (Reception Error)S7RS0B4504019
Wiring Diagram
Refer to “DTC U1073: Control Module Communication Bus Off”.
DTC Detecting Condition
Reception error of communication data for ECM is detected more than specified time continuously.
DTC Troubleshooting Step Action Yes No 1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 1) Check DTC for ABS.
Is DTC U1073 detected? Go to “DTC U1073:
Control Module
Communication Bus
Off”.Go to Step 3.
3 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.
4 1) Check connection of connectors of all control modules communicating by means of CAN.
2) Check DTC for ABS.
Is DTC U1100 detected? Go to Step 5. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00” in related manual.
5 1) Turn ignition switch to OFF position.
2) Disconnect connectors of ABS control module and ECM
communicating by means of CAN.
3) Check CAN communication circuit between ABS control module and ECM for open, short and high resistance.
Is CAN communication circuit in good condition? Go to Step 6. Repair or replace the
CAN communication
line.
6 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 1) Turn ignition switch to OFF position. 2) Connect connector of disconnected control modules communicating by means of CAN.
3) Disconnect connector from any one of control modules other than BCM and ABS control module.
4) Recheck ABS contro l module for DTC
IS DTC U1100 detected? Disconnected
connectors of control
modules other than the
one whose connector is
disconnected in Step 3)
one by one and check
that DTC U1100 is
detected by ABS control
module each time
connector is
disconnected.
When DTC U1100 is not
detected by ABS
module while checking
in this way, go to
description under “NO”
below. If DTC U1100 is
detected by ABS control
module, go to Step 8.Check power and
ground circuit of control
module disconnected in
Step 3) circuit is OK,
substitute a know-good
control module
disconnected in Step 3)
and recheck.

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-17
) C1041 Right-front inlet solenoid
valve circuit failure
Mismatching solenoid output and solenoid monitor is detected. {{{
) C1042 Right-front outlet solenoid
valve circuit failure {{{
) C1043 Master cylinder cut solenoid
valve circuit No.1 failure {{{
) C1044 Master cylinder cut solenoid
valve circuit No.2 failure {{{
) C1045 Left-front inlet solenoid valve
circuit failure {{{
) C1046 Left-front outlet solenoid
valve circuit failure {{{
) C1051 Right-rear inlet solenoid
valve circuit failure {{{
) C1052 Right-rear outlet solenoid
valve circuit failure {{{
) C1053 Low pressure solenoid valve
circuit No.1 failure {{{
) C1054 Low pressure solenoid valve
circuit No.2 failure {{{
) C1055 Left-rear inlet solenoid valve
circuit failure {{{
) C1056 Left-rear outlet solenoid
valve circuit failure {{{
) C1057 *2 ESP
® control module power
supply circuit failure ESP®
control module power supply
voltage is too high. {{{
ESP® control module power supply
voltage is too low. {
*4 {
) C1061 Pump motor and/or motor
circuit failure Defective pump motor and/or motor
power supply voltage is too low.
{
— {
) C1063 Solenoid valve
power supply
driver circuit failure Mismatching solenoid output and
solenoid monitor is detected.
{{{
) C1071 ESP
® con
trol module
internal defect ESP®
control module internal
defect is detected. {{{
) C1073 Lost communication with
yaw rate / G sensor
assembly CAN line communication error in
ESP®
control module and yaw rate
/ G sensor assembly is detected. ——
{
) C1075 Steering angle sensor
calibration incomplete *3 Missing steering angle sensor
calibration point data is detected.
——
{
) C1076 Master cylinder pressure
sensor calibration
incomplete Master cylinder pressure sensor
calibration is incompleted.
——
{
) C1078 Lateral G sensor in yaw rate
/ G sensor assembly
calibration incomplete Lateral G sensor in yaw rate / G
sensor assembly calibration is
incompleted.
——
{
) C1090 Invalid communication with
ECM ESP®
control module rolling
counter failure is detected by ECM. ——
{
) C1091 ECM data in CAN line failure ECM sent invalid signal to ESP
®
control module. ——
{
) C1094 Invalid torque control
communication with ECM Reception error of torque control
signal with ECM
——
{
) U1073 Control module
communication bus off Transmission error that is
inconsistent between transmission
data and transmission monitor
(CAN bus monitor) data is detected
more than 7 times continuously.
——
{
DTC (displayed
on SUZUKI scan tool) Diagnostic Items
Detecting condition (DTC will
beset when detecting) ABS
warning lamp EBD
warning lamp ESP
®
warning lamp

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-19
Fail-Safe TableS7RS0B4604023
When any of the following DTC(s) is detected, ESP® system is in fail-safe mode per its DTC and ABS, EBD and/or
TCS / stability functions are deactivate d until the resolution is applied.
DTC No. Fail-safe operation
Fail-safe condition resolutive
ABS EBD TCS/stability
) C1016 {{{ —
) C1017 {{ —
When ESP® control module detects the system as
normal, after ignition switch turned OFF to ON.
)
C1018 {{ —
) C1020 {{ —
) C1021 —*1— When estimated vehicle speed exceeds 10 km/h
(6.5 mile/h) and detects system as normal.
) C1022 —*1—
) C1023 {{ — When ESP® control module detects the system as
normal, after ignition switch turned OFF to ON.
) C1024 {{ —
) C1025 —*1— When estimated vehicle speed exceeds 10 km/h
(6.5 mile/h) and detects system as normal.
) C1026 —*1—
) C1027 *2 {{{ —
) C1028 {{ —When ESP®
control module detects the system as
normal, after ignition switch turned OFF to ON.
) C1031 —*1— When estimated vehicle speed exceeds 10 km/h
(6.5 mile/h) and detects system as normal.
) C1032 —*1—
) C1034 {{ —When ESP®
control module detects the system as
normal, after ignition switch turned OFF to ON.
) C1035 —*1— When estimated vehicle speed exceeds 10 km/h
(6.5 mile/h) and detects system as normal.
) C1036 —*1—
) C1037 {{ ——
) C1038 {{ —
When ESP® control module detects the system as
normal, after ignition switch turned OFF to ON.
)
C1039 {{ —
) C1040 {{ —
) C104
1 ———
) C1042 ———
) C1043 ———
) C1044 ———
) C1045 ———
) C1046 ———
) C1051 ———
) C1052 ———
) C1053 ———
) C1054 ———
) C1055 ———
) C1056 ———
) C1057 —*3—
) C1061 —{—When estimated vehicle speed exceeds 10 km/h
(6.5 mile/h) and detects system as normal.
) C1063 ———
When ESP® control module detects the system as
normal, after ignition switch turned OFF to ON.
)
C1071 ———
) C1073 {{ —
) C1075 {{ — Steering angle sensor calibration completed.
) C1076 {{ —Master cylinder pressure sensor calibration
completed.
) C1078 {{ —Yaw rate / G sensor assembly calibration
completed.
) C1090 {{ —
When ESP® control module detects the system as
normal, after ignition switch turned OFF to ON.
)
C1091 {{ —
) C1094 {{ —
) U1073 {{ —
) U1100 {{ —
) U1126 {{ —
) U1140 {{ —

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 Electronic Stability Program: 4F-25
Circuit Description
EBD warning lamp (brake warning lamp) is controlled by ESP® control module and BCM through lamp driver module
in combination meter.
If EBD system is in good condition, ESP ® control module turns EBD warning lamp ON at the ignition switch ON,
keeps it ON for 2 seconds and then turns it OFF.
EBD warning lamp is turned ON cont inuously at the following conditions.
• EBD system is an abnormality
• Connector of ESP ® control module is disconnected
• Parking brake switch is ON
• Brake fluid level is lower than minimum level
The information of parking brake switch and brake fluid leve l are transmitted from BCM to lamp driver module in
combination meter through CAN communication line.
Troubleshooting
Step Action Yes No 1 Check parking brake and brake fluid level
1) Make sure that:
• Parking brake is completely released.
• Brake fluid level is upper than the minimum level.
Are the check results OK? Go to Step 2. Release parking brake
completely and/or
replenish brake fluid.
2 Check ABS warning lamp
1) Turn ignition switch to ON position.
Does ABS warning lamp come on steady? Perform “ABS Warning
Lamp Does Not Come
ON at Ignition Switch
ON” previously outlined.Go to Step 3.
3 Check parking brake switch circuit and brake fluid level
switch circuit
1) Release parking brake completely, and replenish brake
fluid.
2) Disconnect BCM connectors with ignition switch turned OFF.
3) Measure resistance between each terminal of “L01-6”, “E46-5” and vehicle body ground.
Are resistance
∞ Ω? Go to Step 4. Check each applicable
circuit for short to
vehicle body ground. If
OK, then check parking
brake switch and/or
brake fluid level switch.
4 CAN communication circuit check
1) CAN communication circuit between combination meter,
ABS (ESP® ) control module and BCM 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 EBD
warning lamp remains
ON, substitute a known-
good ESP
® hydraulic
unit / control module
assembly and recheck. Repair or replace.

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-29
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC C1017 / C1023: Yaw Rate / G Sensor Assembly FailureS7RS0B4604025
DTC C1017: Lateral G Sensor Range / Performance
DTC C1023: Yaw Rate Sensor Failure
DTC Detecting Condition and Trouble AreaDTC Detecting Condition Trouble Area
Vehicle behavior and stop lamp switch signal is disagreed
for specified time. • Back up light switch circuit
• Back up light switch
•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) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP ®.
Is DTC U1073 and/or U1100 detected? Go to applicable diag.
flow.
Go to Step 3.
3 Check stop lamp switch circuit
1) Check stop lamp, stop lamp (brake pedal) switch and
their circuit referring to “Brake Light Symptom Diagnosis
in Section 9B”.
Are they in good condition? Go to Step 4.
Repair or replace.
4 Check ECM circuit for stop lamp switch
1) Disconnect connectors from ECM.
2) Check for proper connection to “E23-20” wire of ECM
connector.
3) If connections are OK, check stop lamp switch circuit for
the following.
• Resistance of “GRN/WHT” wire terminal of stop lamp switch between stop lamp switch connector and ECM
connector is less than 1 Ω (continuity check)
• Resistance between “GRN/WHT” wire terminal of stop lamp switch connector and vehicle body ground is
infinity (ground short check)
• Voltage of between “GRN/WHT” wire terminal of stop switch connector and vehicle body ground is 0 V with
ignition switch tuned ON (power short check)
Are they in good condition? Substitute a known-
good ECM and recheck.
If DTC C1016 is still
detected, substitute a
known-good ESP
®
hydraulic unit / control
module assembly and
recheck. Repair or replace
defective wire.
DTC Detecting Condition
Trouble Area
C1017:
Lateral G sensor signal is out of specified range.
C1023:
• Yaw rate sensor signal is out of range.
• Vehicle behavior and yaw rate signal is disagreed. • Yaw rate / G sensor assembly
• ESP
® control module