Suzuki Grand Vitara JB627. Manual - part 187

4E-29 ABS: 

DTC Detecting Condition
This DTC will be set when an internal malfunction is detected in the ABS (ESP

®) control module.

DTC Troubleshooting

Step

Action

Yes

No

1

Was “ABS Check” performed?

Go to Step 2.

Go to “ABS Check”.

2

Clear all DTCs and check DTC.

Is it DTC C1071?

Go to Step 3.

Could be a temporary 
malfunction of the ABS 
(ESP

®) control module.

3

1) Check for proper connection of ABS (ESP

®) hydraulic 

unit / control module connector.

2) If OK, disconnect ABS (ESP

®) hydraulic unit / control 

module connector and check the following.
• Voltage “E03-1” (or “E53-32”) terminal: 10 – 14 V
• Voltage “E03-14” (or “E53-1”) terminal: 10 – 14 V
• Resistance between “E03-13” (or “E53-16”) and body 

ground: Continuity

• Resistance between “E03-26” (or “E53-47”) and body 

ground: Continuity

Are the check result as specified?

Replace ABS (ESP

®) 

hydraulic unit / control 
module assembly.

Repair “WHT/RED”, 
“WHT/BLU” and/or 
“BLK” circuit and 
recheck.

ABS: 4E-30

DTC U1073: Control Module Communication Bus Off

S6JB0B4504019

Wiring Diagram

WHT

RED

WHT

RED

WHT/BLU

WHT

RED

WHT

RED

E91-22 

E91-23

E03-12

E03-6

E03-8

WHT/BLU

WHT/RED

E23-17

E23-9

G31-1

G31-3

G44-19

G44-18

WHT

RED

WHT

RED

E92-17

E92-7

G28-8

G28-10

G45-9

G45-10

WHT/RED

E03-10

WHT

RED

WHT

RED

2

WHT

RED

WHT/BLU

E53-13

E53-44

E53-46

WHT/RED

E53-42

1

3

4

5

10

6

8

7

9

G31-2

G31-4

11

[D]

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

[I]

G44

1

2

3

4

5

6

7

8

9

10

11

14

15

16
36

34 33 32 31 30 29

24 23

37

18

19

20

[F]

6

5

16 15 14 13 12 11

4 3

24 23

21

22

10 9

8

7

2

1

19

20

18 17

E92

[J]

1

2

3

4

5

6

7

8

9

10

11

17

1615141312

2221201918

G28

[G]

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

[H]

[E]

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

33

34

35

36

37

38

39

40

32

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

E23

[C]

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

[A]

[K]

G45

10 9

3 2 1

[A]

[B]

I6JB01450013-05

[A]: ESP

® model

[I]: Keyless start control module connector (viewed 

from harness side) 

6. 4WD control module (if equipped) 

[B]: Non-ESP

® model

[J]: Combination meter connector (viewed from 

harness side)

7. Keyless start control module (if equipped)

[C]: ESP

® control module connector (viewed from 

terminal side)

[K]: Steering angle sensor connector (viewed from 

harness side) 

8. Combination meter 

[D]: ABS control module connector (viewed from 

terminal side)

1. ESP

® hydraulic unit / control module assembly 

9. Steering angle sensor (if equipped) 

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

2. ABS hydraulic unit / control module assembly 10. Junction 

connector

[F]: TCM connector (viewed from harness side) 

3. ECM

11. Data link connector (DLC) 

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

4. TCM

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

harness side) 

5. BCM

4E-31 ABS: 

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.

DTC Troubleshooting

Step

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”.

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”.

4

1) Connect connectors of disconnected control modules 

communicating by means of CAN.

2) Disconnect each connector and check DTC for ABS in 

turn.
• ECM
• TCM (A/T model)
• BCM
• 4WD control module (if equipped)
• Keyless start control module (if equipped)
• Combination meter
• Steering angle sensor (ESP

® model)

Is DTC U1073 detected?

Check ABS (ESP

®) 

control module power 
and ground circuit. If 
circuits are OK, 
substitute a known-
good ABS (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.

ABS: 4E-32

DTC U1100: Lost Communication with ECM (Reception Error)

S6JB0B4504020

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

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 U0073 detected?

Go to “DTC U0073: 
Control Module 
Communication Bus Off 
in Section 1A”.

Go to Step 4.

4

1) Check for proper connection at each ABS and ECM 

terminals with ignition switch turned OFF.

2) If connections are OK, recheck ABS for DTC with engine 

running.

Is there DTC U1100?

Go to Step 5.

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

5

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 6.

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

6

1) Turn ignition switch to OFF position.
2) Disconnect connectors of ABS (ESP

®) control module 

and ECM.

3) Check CAN communication circuit between ABS and 

ECM for open, short and high resistance.

Is CAN communication circuit in good condition?

Go to Step 7.

Repair insulation of 
CAN communication 
line circuit referring to 
“Precaution for CAN 
Communication System 
in Section 00”.

7

1) Disconnect connectors of all control modules 

communicating by means of CAN.

2) Check CAN communication circuit between control 

modules other than Step 6 for open, short and high 
resistance.

Is each CAN communication circuit in good condition?

Go to Step 8.

Repair or replace the 
CAN communication 
line.

8

1) Connect connectors of disconnected control modules 

communicating by means of CAN.

2) Disconnect each connector and check DTC for ABS in 

turn.
• ECM
• TCM (A/T model)
• BCM
• 4WD control module (if equipped)
• Keyless start control module (if equipped)
• Combination meter
• Steering angle sensor (ESP

® model)

Is DTC U1073 detected?

Check ABS (ESP

®) 

control module power 
and ground circuit. If 
circuits are OK, 
substitute a known-
good ABS (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.