Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 294

4F-24 Electronic Stability Program: 

6

1) Check if communication is possible by trying 

communication with others control module.

Is it possible to communicate with others control module?

Go to Step 7.

Repair open in common 
section of serial data 
circuit (“PPL/WHT” wire 
circuit) used by all 
control modules or short 
to ground or power 
circuit which has 
occurred somewhere in 
serial data circuit (“PPL/
WHT” wire circuit).

7

1) Turn ignition switch to ON position.
2) Measure voltage between terminal B of data link 

connector and vehicle body ground.

Is voltage 10 – 12 V?

Go to step 8.

Terminal B circuit open 
or shorted to ground.

8

1) Turn ignition switch to OFF position.
2) Measure resistance between the following terminals;

• Terminal G of data link connector and vehicle body 

ground.

• Terminal G1 of data link connector and vehicle body 

ground.

Is each resistance 1 

Ω

 or less?

Go to step 9.

Terminal G and/or G1 
circuit open or high 
resistance.

9

1) Turn ignition switch to OFF position.
2) Check proper connection at “E53-33” (“PPL/WHT” wire) 

terminal for serial data circuit.

3) If OK, then check resistance between “E53-33” (“PPL/

WHT” wire) terminal and “PPL/WHT” wire terminal (2) for 
serial data circuit in DLC (1).

Is resistance 1 

Ω

 or less?

Substitute a known-
good ESP

® hydraulic 

unit / control module 
and recheck.

Repair high resistance 
or open in “PPL/WHT” 
wire circuit for ESP

® 

system.

Step

Action

Yes

No

“E53-33”

2

1

I6JB01460015-01

Electronic Stability Program:  4F-25

DTC C1015 / C1017 / C1023: Longitudinal G Sensor / Lateral G Sensor / Yaw Rate Sensor in Yaw Rate 
/ G Sensor Assembly Failure

S6JB0A4604013

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

DTC C1016: Stop Light Switch Circuit Failure

S6JB0A4604014

Wiring Diagram

DTC Detecting Condition

Trouble Area

C1015:
Longitudinal G sensor signal is out of specified range. (for 
4WD vehicle)
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

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) Connect scan tool to DLC with ignition switch turned 

OFF.

2) Turn ignition switch ON and check DTC for ESP

®.

Are DTC C1034 and/or C1073 detected?

Go to applicable DTC 
diag. flow.

Go to Step 3.

3

Check sensor calibration
1) Calibrate yaw rate / G sensor assembly referring to 

“Sensor Calibration”.

2) Clear all DTCs and check DTC for ESP

®.

Are DTC C1015, C1017 and/or C1023 still detected?

Go to Step 4.

Yaw rate / G sensor 
assembly calibration is 
incompleted.

4

Check yaw rate / G sensor assembly
1) Check yaw rate / G sensor assembly referring to “Yaw 

Rate / G Sensor Assembly On-Vehicle Inspection”.

Is it good condition?

Substitute a known-
good ESP

® hydraulic 

unit / control module 
assembly and recheck.

Replace yaw rate / G 
sensor assembly.

3

2

1

WHT

E53-42
E53-46

6

7

[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

WHT/RED

WHT/BLU

5

7

8

E23-4
E23-19

[B]

2 1

E23

3

4

18

19

5

6

7

10

11

17

20

47 46

49

50

51

21

22

52

16

25

9

24

14

29

55

57

5453

59

60

58

26

27

28

15
30

56

48

32 31

34

35

36

37

40

42

3938

44

45

43

41

33

12

13

23

8

12V

GRN

4

GRN/WHT

E23-20

6

7

E66-32

E66-29

E66-26

[C]

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

12V

[D]

[E]

I6JB0A460004-01

[A]: ESP

® control module connector (viewed from terminal side)

3. Junction block assembly

4F-26 Electronic Stability Program: 

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

[B]: ECM connector (viewed from harness side) (petrol engine model)

4. Stop light switch

[C]: ECM connector (viewed from harness side) (diesel engine model)

5. Stop light

[D]: Petrol engine model

6. ECM

[E]: Diesel engine model

7. CAN driver

1. Battery

8. ESP

® hydraulic unit control module assembly

2. Main fuse box

DTC Detecting Condition

Trouble Area

Vehicle behavior and stop light switch signal is disagreed 
for specified time.

• Back up light switch circuit
• Back up light switch
• CAN communication circuit
• ECM
• 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) 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 DTC 
diag. flow.

Go to Step 3.

3

Check stop light switch
1) Check stop light (brake pedal) switch referring to “Brake 

Light Switch Inspection in Section 9B”.

Is it in good condition?

Go to Step 4.

Replace stop light 
switch.

4

Check stop light switch circuit
1) Disconnect connector from stop light switch connector 

with ignition switch turned OFF.

2) Check for proper connection to switch connector.
3) If connection are OK, measure voltage between “GRN” 

wire terminal of stop light switch connector and vehicle 
body ground.

Is it 10 – 14 V?

Go to Step 5.

Replace fuses and/or 
repair “GRN” wire 
circuit.

5

Check stop light switch circuit
1) Disconnect connectors from ECM.
2) Check for proper connection to “E23-20” wire of ECM 

connector.

3) If connections are OK, check stop light switch circuit for 

the following.
• Resistance of “GRN/WHT” wire terminal of stop light 

switch between stop light switch connector and ECM 
connector is less than 1

Ω (continuity check)

• Resistance between “GRN/WHT” wire terminal of stop 

light 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)

Is it 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.

Electronic Stability Program:  4F-27

DTC C1018: Brake Fluid Level Switch Failure

S6JB0A4604015

Wiring Diagram

DTC Detecting Condition and Trouble Area

DTC Troubleshooting

[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

RED/BLK

E53-13
E53-44

RED

WHT

RED

WHT

12V

1

2

3

4

5

6

2

G31-1
G31-3

G31-7

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

[B]

I6JB01460017-02

[A]: ESP

® control module connector (viewed from terminal side)

4. Other control modules are communicated with CAN

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

5. Brake fluid level switch

1. BCM

6. ESP

® hydraulic unit control module assembly

2. CAN driver
3. Junction connector

DTC Detecting Condition

Trouble Area

ESP

® control module received the following signals from 

BCM.
• Brake fluid level is too low.
• Input voltage of brake fluid level switch to BCM is low.

• Brake fluid level
• Brake fluid level switch circuit
• Brake fluid level switch
• CAN communication circuit
• BCM
• 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

Check brake fluid level
1) Check brake fluid level in reservoir.

Is brake fluid level upper than the minimum level?

Go to Step 3.

Replenish brake fluid to 
reservoir.

3

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 U1140 detected?

Go to applicable DTC 
diag. flow.

Go to Step 3.