Suzuki Grand Vitara JB419. Service manual — part 102

Electronic Stability Program: 4F-41

DTC U1126: Lost Communication with Steering Angle Sensor (Reception Error)

S5JB0B4604084

Wiring Diagram

DTC Detecting Condition and Trouble Area

[G]

[E]

[F]

1

2

3

4

5

6

7

8

9

10

11

17

1615141312

2221201918

G28

[C]

G31

1

2

3

4

7

8

9

10

11

14

15

16
36

34

35

24 23

21

22

28 27

25

26

37

39 38

40

18 17

13 12

19

20

E91

1

2

3

10

11

12

16

17

18

15 14 13

19

20

21

25

26

5

6

[B]

[D]

[A]

E53

16

1

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

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

G45

10 9

3 2 1

1

3

7

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

2

4

6

8

9

10

11

12

13

14

5

E66

1

2

3

4

5

6

7

8

G24

WHT/RED

WHT/BLU

WHT/RED

WHT

RED

WHT

RED

E66-26

E66-32

G24-6

G24-5

WHT

RED

WHT

RED

G28-8

G28-10

G45-9

G45-10

WHT/BLU

WHT

RED

E53-44

E53-13

E53-46

E53-42

1

E91-22

E91-23

2

8

4

6

5

7

G31-1

G31-3

WHT

RED

3

G31-2

G31-4

9

WHT

RED

I5JB0B460007-01

[A]: ESP

® control module connector (viewed from

terminal side)

[G]: Steering angle sensor connector (viewed from harness

side)

6. Combination meter

[B]: 4WD control module connector (viewed from

harness side)

1. ESP

® hydraulic unit / control module assembly

7. Steering angle sensor

[C]: BCM connector (viewed from harness side)

2. 4WD control module (if equipped)

8. Junction connector

[D]: ECM connector (viewed from harness side)

3. BCM

9. Data link connector (DLC)

[E]: Immobilizer Control module (ICM) connector

(viewed from harness side)

4. ECM

[F]: Combination meter connector (viewed from

harness side)

5. Immobilizer Control module (ICM) (if equipped)

DTC Detecting Condition

Trouble Area

Steering angle sensor message data is missing from CAN
communication.

• CAN communication circuit
• Steering angle sensor
• ESP

® control module

4F-42 Electronic Stability Program:

DTC Troubleshooting

Step

Action

Yes

No

1

Was “Electronic Stability Program Check” performed?

Go to Step 2.

Go to “Electronic
Stability Program
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
in Section 4E”.

Go to Step 3.

3

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
referring to “Intermittent
and Poor Connection
Inspection in Section 00
in related manual”.

4

CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of ESP

® control module and

steering angle sensor communicating by means of CAN.

Is each CAN communication circuit between ESP

®

control

module and steering angle sensor opened, shorted or high
resistance?

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.

Is each CAN communication circuit between disconnected
control modules (other than ESP

®

control module and

steering angle sensor) opened, shorted or high resistance?

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 and check DTC for ESP

® in

turn.
• ECM
• BCM
• 4WD control module (if equipped)
• Immobilizer Control module (ICM) (if equipped)
• Combination meter
• Steering angle sensor

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.

Electronic Stability Program: 4F-43

DTC U1139: Lost Communication with 4WD Control Module (Reception Error) (If Equipped 4WD
Control Module)

S5JB0B4604085

Wiring Diagram
Refer to “DTC U1126: Lost Communication with Steering Angle Sensor (Reception Error)”.

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

DTC Detecting Condition

Trouble Area

4WD control module message data is missing from CAN
communication.

• CAN communication circuit
• 4WD control module
• ESP

® control module

Step

Action

Yes

No

1

Was “Electronic Stability Program Check” performed?

Go to Step 2.

Go to “Electronic
Stability Program
Check”.

2

DTC check for ESP

®

1) Check DTC for ESP

®.

Is DTC U1139 and DTC U1073 detected together?

Go to “DTC U1073:
Control Module
Communication Bus Off
in Section 4E”.

Go to Step 3.

3

DTC check for 4WD control module
1) Check DTC for 4WD control module.

Is DTC P1073 detected?

Go to “DTC U1073:
Control Module
Communication Buss
Off in Section 3C”.

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 U1139 detected?

Go to Step 4.

Check for intermittent
trouble referring to
“Intermittent and Poor
Connection Inspection
in Section 00 in related
manual”.

5

CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of ESP

® control module and

4WD control module communicating by means of CAN.

Is each CAN communication circuit between ESP

®

control

module and 4WD control module opened, shorted or high
resistance?

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.

Is each CAN communication circuit between disconnected
control modules (other than ESP

®

control module and 4WD

control module) opened, shorted or high resistance?

Repair or replace the
CAN communication
line.

Go to Step 7.

4F-44 Electronic Stability Program:

DTC U1140: Lost Communication with BCM (Reception Error)

S5JB0B4604086

Wiring Diagram
Refer to “DTC U1126: Lost Communication with Steering Angle Sensor (Reception Error)”.

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

7

DTC check for ESP

®

1) Connect connectors of disconnected control modules

communicating by means of CAN.

2) Disconnect each connector and check DTC for ESP

® in

turn.
• ECM
• BCM
• 4WD control module
• Immobilizer control module (ICM) (if equipped)
• Combination meter
• Steering angle sensor

Is DTC U1139 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

• 4WD control module
• ESP

® control module

Step

Action

Yes

No

1

Was “Electronic Stability Program Check” performed?

Go to Step 2.

Go to “Electronic
Stability Program
Check”.

2

DTC check for ESP

®

1) Check DTC for ESP

®.

Is DTC U1101 and DTC U1073 detected together?

Go to “DTC U1073:
Control Module
Communication Bus Off
in Section 4E”.

Go to Step 3.

3

DTC check for BCM
1) Check DTC for BCM.

Is DTC P1073 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 U1139 detected?

Go to Step 4.

Check for intermittent
trouble referring to
“Intermittent and Poor
Connection Inspection
in Section 00 in related
manual”.

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.

Is each CAN communication circuit between ESP

®

control

module and BCM opened, shorted or high resistance?

Repair or replace the
CAN communication
line.

Go to Step 6.