Suzuki Grand Vitara JB416 / JB420 (ESP model). Service manual — part 80

5A-19 Automatic Transmission/Transaxle:

Scan Tool Data Definitions
Gear Position (1

ST

, 2

ND

, 3

RD

, 4

TH

, N, R): This

parameter is indicated actual gear position.

Throttle Position (%): Throttle valve opening ratio sent

from ECM on CAN communication line.

Input Shaft Rev (RMP): Input shaft revolution

computed by reference pulses coming from input
shaft speed sensor on transmission case.

Output Shaft Rev (RMP): Output shaft revolution

computed by reference pulses coming from output
shaft speed sensor on transmission case.

Vehicle Speed 1 (Km/h): This parameter is competed

by output shaft speed sensor and 4L/N switch (if
equipped) on TCM. Gear shift schedule relate this
parameter.

Battery Voltage (V): Battery voltage read by TCM as

analog input signal by TCM.

ATF Temp (

°C): ATF temperature detected by signal

from transmission fluid temperature sensor installed
in valve body.

TCC Sol Duty (%): Electric current value ration

between electric current value being outputted from
TCM to TCC pressure control solenoid and
maximum value can be outputted by TCM.

Press Cont Sol (%): Electric current value ratio

between electric current value being outputted from
TCM to pressure control solenoid-A and maximum
value can be outputted by TCM.

Slip RPM (RMP): This parameter indicates slipping

rotation in the torque converter (difference between
input shaft rotation and engine rotation).

Vehicle Speed 2 (Km/h): Actual vehicle speed

detected by signal on CAN communication line fed
from ECM.

Engine Speed (RPM): Engine speed computed by

signal on CAN communication line fed from ECM.

Coolant Temp (

°C): Engine coolant temperature

detected by signal on CAN communication line fed
from ECM.

Target Engine Torque (N

⋅m): Target engine torque

detected by signal on CAN communication line fed
from ECM.

Engine Torque (N

⋅m): Actual engine torque detected

by signal on CAN communication line fed from ECM.

MIL Request (ON, OFF) (for E-OBD model): ON:

Signal which TCM requires combination meter to
turn ON malfunction indicator lamp.
OFF: Signal which TCM does not require
combination meter to turn ON malfunction indicator
lamp.

Malfunction Indication On (ON, OFF) (for non E-OBD

model): ON: Signal which TCM requires
combination meter to turn ON transmission warning
lamp.
OFF: Signal which TCM does not require
combination meter to turn ON transmission warning
lamp.

Fuel Cut Flag: ON: Signal which inform that fuel cut is

operating.
OFF: Signal which inform that fuel cut is not
operating.

O/D Off Switch (ON, OFF): Inputted signal from “3”

position switch in selector lever assembly.
ON: Shift selector lever to “3” range
OFF: Shift selector lever to other above range

Trans Range (P, R, N, D, 2, L): It indicates

transmission range according to transmission range
switch signal.

Shift Sol A Con/ MON (ON, OFF): COM-ON: ON

command being outputted to shift solenoid-A.
COM-OFF: OFF command not being outputted to
shift solenoid-A.
MON-ON: Electricity being passed to shift solenoid-
A.
MON-OFF: Electricity not being passed to shift
solenoid-A.

Shift Sol B Con / MON (ON, OFF): COM-ON: ON

command being outputted to shift solenoid-B.
COM-OFF: OFF command not being outputted to
shift solenoid-B.
MON-ON: Electricity being passed to shift solenoid-
B.
MON-OFF: Electricity not being passed to shift
solenoid-B.

Mode Select Switch (NORMAL, POWER): Inputted

signal from P/N mode switch on center console.
NORMAL: P/N mode switch is at OFF position.
POWER: P/N mode switch is at ON position.

4WD Low Switch (if equipped) (ON, OFF): Inputted

signal from 4L/N switch on transfer case.
ON: Transfer gear position is 4L or N
OFF: Transfer gear position is 4H

D RANGE SIGNAL (P/N range, D range): ON: Signal

which TCM require ECM to increase idle speed
OFF: Signal which TCM does not require ECM to
increase idle speed

A/C Switch (ON, OFF): ON: Signal which inform that

air conditioner compressor is turned ON.
OFF: Signal which inform that air conditioner
compressor is turned OFF.

Brake Switch (ON, OFF): Brake light switch position

detected by signal on CAN communication line fed
from ECM.
ON: Brake pedal depressed
OFF: Brake pedal released

Accel Actual Pos (%): Accelerator pedal opening ratio

detected by signal on CAN communication line fed
from ECM.

Automatic Transmission/Transaxle: 5A-20

No Gear Shift to 4th Gear

S5JB0E5104020

System Description
TCM does not shift to 4th gear under any of the following condition.
• “3” position switch signal is inputted.
• 4L/N switch (if equipped) is turned ON. (4L or N mode)
• TCM detects the following DTCs.

DTC, P0722, P0752, P0962, P0963, P0973, P0974, P0976, P0977, P1702

Troubleshooting

WARNING

!

• When performing a road test, select a place where there is no traffic or possibility of a traffic

accident and be very careful during testing to avoid occurrence of an accident.

• Road test should be carried out with 2 persons, a driver and tester, on a level road.

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System
Check in related
manual”.

2

Check DTC

Is DTC, P0722, P0752, P0962, P0963, P0973, P0974,
P0976, P0977 or P1702 detected?

Perform DTC Flow to
repair and retry.

Go to Step 3.

3

ECT check
1) Warm up engine to normal operating temperature.
2) Check ECT monitored by TCM using scan tool.

Is ECT indicated –40

°

C (–40

°

F)?

Go to Step 4.

Faulty ECT sensor, its
circuit or engine cooling
system. If OK, substitute
a known-good TCM and
recheck.

4

“3” position switch signal inspection
1) With ignition switch ON, check voltage between terminal

“E92-20” of TCM connector and ground under the
following conditions.

“3” position switch specification
Shift selector lever to “P”, “R”, “N” or “D” range: 2.9
– 3.8 V
Shift selector lever to “3”, “2” or “L” range: 1.4 – 2.0
V

Is result as specified?

• For vehicle equipped

with 4L/N switch, go
to Step 5.

• For vehicle equipped

without 4L/N switch,
substitute a known-
good TCM and
recheck.

Faulty “3” position
switch or its circuit. If
OK, substitute a known-
good TCM and recheck.

5

4L/N switch signal inspection
1) With ignition switch ON, check voltage between terminal

“E93-4” of TCM connector and ground.

4L/N switch specification
Transfer gear position “4H”: Battery voltage
Transfer gear position “4L” or “N”: 0 – 2 V

Is result as specified?

Substitute a known-
good TCM and recheck.

Faulty 4L/N switch or its
circuit. If OK, substitute
a known-good TCM and
recheck.

5A-21 Automatic Transmission/Transaxle:

No Lock-Up Occurs

S5JB0E5104021

System Description
TCM turns TCC pressure control solenoid OFF under any of the following conditions.
• Engine coolant temperature is lower than 60

°C (140 °F).

• 4L/N switch (if equipped) is turned ON. (4L or N mode)
• Brake light switch is turned ON. (Brake pedal is depressed)
• TCM detects the following DTCs.

P0712, P0713, P0717, P0722, P0962, P0963, P0973, P0974, P0976, P0977, P1702, P1703, P1774, P1777, P2763
and P2764

Troubleshooting

WARNING

!

• When performing a road test, select a place where there is no traffic or possibility of a traffic

accident and be very careful during testing to avoid occurrence of an accident.

• Road test should be carried out with 2 persons, a driver and tester, on a level road.

Step

Action

Yes

No

1

Was “A/T System Check” performed?

Go to Step 2.

Go to “A/T System
Check in related
manual”.

2

Check DTC

Is DTC P0712, P0713, P0717, P0722, P0962, P0963,
P0973, P0974, P0976, P0977, P1702, P1703, P1774,
P1777, P2763 or P2764 detected?

Perform DTC Flow to
repair and retry.

Go to Step 3.

3

ECT check
1) Warm up engine to normal operating temperature.
2) Check ECT using scan tool.

Is ECT more than 60

°

C (140

°

F)?

• For vehicle equipped

with 4L/N switch, go
to Step 4.

• For vehicle equipped

without 4L/N switch,
go to Step 5.

Faulty ECT sensor, its
circuit or engine cooling
system. If OK, substitute
a known-good TCM and
recheck.

4

4L/N switch signal inspection
1) With ignition switch ON, check voltage between terminal

“E92-4” of TCM connector and ground.

4L/N switch specification
Transfer gear position or “4H”: Battery voltage
Transfer gear position “4L” or “N”: 0 – 2 V

Is result as specified?

Go to Step 5.

Faulty “4L” switch or its
circuit. If OK, substitute
a known-good TCM and
recheck.

5

Brake light switch signal inspection
1) With ignition switch ON, check voltage between terminal

“E61-34” of ECM connector and ground.

Brake light switch specification
Brake pedal is released: 0 – 1 V
Brake pedal is depressed: Battery voltage

Is result as specified?

Substitute a known-
good TCM and recheck.

Mis-adjusted brake light
switch, faulty brake light
switch or its circuit. If
OK, substitute a known-
good TCM and recheck.

Automatic Transmission/Transaxle: 5A-22

DTC P1774: CAN Communication Bus Off

S5JB0E5104041

Wiring Diagram

WHT

RED

WHT

RED

G44-18

G44-19

G44

[A]

1

2

3

4

5

6

7

8

9

10

11

14

15

16
36

34 33 32

30 29

24 23

37

18

19

20

G28-8

G28-10

WHT/BLU

WHT/BLU

WHT/RED

WHT/RED E23-4

E23-19

WHT

RED

WHT

RED

E92-17

E92-7

WHT

RED

E91-22
E91-23

WHT

RED

RED

G31-1
G31-3

G31-4

[C]

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

1

2

3

4

5

6

7

8

9

10

11

17

1615141312

2221201918

G28

[F]

[H]

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

[G]

E91

1

2

3

10

11

12

16

17

18

15 14 13

19

20

21

25

26

5

6

[I]

E53

[E]

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

G31-2

WHT

1

2

3

4

9

5

6

8

7

[L]

E03-12

E03-10

E03-6

E03-8

10

11

[K]

E53-13

E53-42

E53-44

E53-46

[D]

8 7

6 5 4 3

2 1

9

10

11

12

13

14

15

16

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

[J]

G45

10 9

3 2 1

WHT

RED G45-9

G45-10

E23

[B]

2 1

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

I5JB0D510005-01

[A]: Keyless start control module

connector (if equipped) (viewed
from harness side)

[G]: 4WD control module connector (if

equipped) (viewed from harness
side)

1. BCM

7. ABS hydraulic unit / control

module

[B]: ECM connector (viewed from

harness side)

[H]: BCM connector (viewed from

harness side)

2. 4WD control module (if equipped)

8. Combination meter

[C]: TCM connector (viewed from

harness side)

[I]: ESP

® control module connector

(if equipped) (viewed from
terminal side)

3. TCM

9. Junction connector

[D]: DLC (viewed from terminal side)

[J]: Steering angle sensor connector

(if equipped) (viewed from
harness side)

4. Keyless start control module (if

equipped)

10. ESP

® control module (if

equipped)

[E]: ABS hydraulic unit / control

module connector (viewed from
terminal side)

[K]: Vehicle equipped with ESP

®

system

5. DLC

11. Steering angle sensor (if

equipped)

[F]: Combination meter connector

(viewed from harness side)

[L]: Vehicle equipped without ESP

®

system

6. ECM