Infiniti G35 (V35). Manual — part 18

TROUBLE DIAGNOSIS

AT-63

D

E

F

G

H

I

J

K

L

M

A

B

AT

11

No Up
Shift

Gear does not change
from D

2

→

D

3

or from

M

2

→

M

3

.

Refer to

AT-194, "A/T

Does Not Shift: D

2

→

D

3

"

.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 6 and high and low reverse clutch
solenoid valve

AT-170

,

AT-152

4. Line pressure test

AT-52

5. CAN communication line

AT-98

6. Control valve with TCM

AT-225

OFF vehicle

7. High and low reverse clutch

AT-294

12

Gear does not change
from D

3

→

D

4

or from

M

3

→

M

4

.

Refer to

AT-196, "A/T

Does Not Shift: D

3

→

D

4

"

.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 3 and input clutch solenoid valve

AT-166

,

AT-140

4. ATF pressure switch 1 and front brake solenoid valve

AT-164

,

AT-144

5. Line pressure test

AT-52

6. CAN communication line

AT-98

7. Control valve with TCM

AT-225

OFF vehicle

8. Input clutch

AT-284

13

Gear does not change
from D

4

→

D

5

or from

M

4

→

M

5

.

Refer to

AT-198, "A/T

Does Not Shift: D

4

→

D

5

"

.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 1 and front brake solenoid valve

AT-164

,

AT-144

4. ATF pressure switch 5 and direct clutch solenoid valve

AT-168

,

AT-148

5. Turbine revolution sensor

AT-110

6. Line pressure test

AT-52

7. CAN communication line

AT-98

8. Control valve with TCM

AT-225

OFF vehicle

9. Front brake (brake band)

AT-263

10. Input clutch

AT-284

No.

Items

Symptom

Condition

Diagnostic Item

Reference

page

AT-64

TROUBLE DIAGNOSIS

14

No Down
Shift

In “D” or “M” position,
does not downshift to
4th gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 1 and front brake solenoid valve

AT-164

,

AT-144

4. ATF pressure switch 5 and direct clutch solenoid valve

AT-168

,

AT-148

5. CAN communication line

AT-98

6. Line pressure test

AT-52

7. Control valve with TCM

AT-225

OFF vehicle

8. Front brake (brake band)

AT-263

9. Input clutch

AT-284

15

In “D” or “M” position,
does not downshift to
3rd gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 3 and input clutch solenoid valve

AT-166

,

AT-140

4. ATF pressure switch 1 and front brake solenoid valve

AT-164

,

AT-144

5. CAN communication line

AT-98

6. Line pressure test

AT-52

7. Control valve with TCM

AT-225

OFF vehicle

8. Input clutch

AT-284

16

In “D” or “M” position,
does not downshift to
2nd gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 6 and high and low reverse clutch
solenoid valve

AT-170

,

AT-152

4. CAN communication line

AT-98

5. Line pressure test

AT-52

6. Control valve with TCM

AT-225

OFF vehicle

7. High and low reverse clutch

AT-294

17

In “D” or “M” position,
does not downshift to
1st gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 5 and direct clutch solenoid valve

AT-168

,

AT-148

4. CAN communication line

AT-98

5. Line pressure test

AT-52

6. Control valve with TCM

AT-225

OFF vehicle

7. Direct clutch

AT-296

No.

Items

Symptom

Condition

Diagnostic Item

Reference

page

TROUBLE DIAGNOSIS

AT-65

D

E

F

G

H

I

J

K

L

M

A

B

AT

18

Slips/Will
Not
Engage

When “D” or “M” posi-
tion, remains in 1st
gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. Direct clutch solenoid valve

AT-148

4. Line pressure test

AT-52

5. CAN communication line

AT-98

6. Control valve with TCM

AT-225

OFF vehicle

7. 3rd one-way clutch

AT-282

8. 1st one-way clutch

AT-289

9. Gear system

AT-255

10. Reverse brake

AT-263

11. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to

AT-

17, "Cross-sectional View"

.)

AT-263

12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to

AT-17, "Cross-

sectional View"

.)

AT-263

19

When “D” or “M” posi-
tion, remains in 2nd
gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. Low coast brake solenoid valve

AT-156

4. Line pressure test

AT-52

5. CAN communication line

AT-98

6. Control valve with TCM

AT-225

OFF vehicle

7. 3rd one-way clutch

AT-282

8. Gear system

AT-255

9. Direct clutch

AT-296

10. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to

AT-17, "Cross-

sectional View"

.)

AT-263

20

When “D” or “M” posi-
tion, remains in 3rd
gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. Line pressure test

AT-52

4. CAN communication line

AT-98

5. Control valve with TCM

AT-225

OFF vehicle

6. 3rd one-way clutch

AT-282

7. Gear system

AT-255

8. High and low reverse clutch

AT-294

9. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to

AT-

17, "Cross-sectional View"

.)

AT-263

10. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to

AT-17, "Cross-

sectional View"

.)

AT-263

No.

Items

Symptom

Condition

Diagnostic Item

Reference

page

AT-66

TROUBLE DIAGNOSIS

21

Slips/Will
Not
Engage

When “D” or “M” posi-
tion, remains in 4th
gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 3 and input clutch solenoid valve

AT-166

,

AT-140

4. ATF pressure switch 5 and direct clutch solenoid valve

AT-168

,

AT-148

5. ATF pressure switch 6 and high and low reverse clutch
solenoid valve

AT-170

,

AT-152

6. Low coast brake solenoid valve

AT-156

7. Front brake solenoid valve

AT-263

8. Line pressure test

AT-52

9. CAN communication line

AT-98

10. Control valve with TCM

AT-225

OFF vehicle

11. Input clutch

AT-284

12. Gear system

AT-255

13. High and low reverse clutch

AT-294

14. Direct clutch

AT-296

22

When “D” or “M” posi-
tion, remains in 5th
gear.

ON vehicle

1. A/T fluid level and state

AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR

AT-112

,

AT-133

3. ATF pressure switch 1 and front brake solenoid valve

AT-164

,

AT-144

4. Line pressure test

AT-52

5. CAN communication line

AT-98

6. Control valve with TCM

AT-225

OFF vehicle

7. Front brake (brake band)

AT-263

8. Input clutch

AT-284

9. Gear system

AT-255

10. High and low reverse clutch

AT-294

No.

Items

Symptom

Condition

Diagnostic Item

Reference

page