Infiniti M45 (Y34). Manual — part 47

TROUBLE DIAGNOSIS

AT-73

D

E

F

G

H

I

J

K

L

M

A

B

AT

No shock at all or
the clutch slips
when vehicle
changes speed D

1

→

D

2

or M

1

→

M

2

.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

3. ATF pressure switch 5 and direct clutch solenoid valve

AT-242

,

AT-199

4. CAN communication line

AT-103

5. Line pressure test

AT-53

6. Control valve assembly

AT-312

OFF vehicle

7. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

8. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

9. 3rd one-way clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-360

10. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

11. Direct clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-374

12. Forward brake* (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-19

No shock at all or
the clutch slips
when vehicle
changes speed D

2

→

D

3

or M

2

→

M

3

.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

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

AT-246

,

AT-209

4. CAN communication line

AT-103

5. Line pressure test

AT-53

6. Control valve assembly

AT-312

OFF vehicle

7. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

8. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

9. 3rd one-way clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-360

10. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

11. High and low reverse clutch (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-372

12. Forward one-way clutch* (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-19

13. Forward brake* (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-19

Symptom

Condition

Diagnostic Item

Reference page

AT-74

TROUBLE DIAGNOSIS

No shock at all or
the clutch slips
when vehicle
changes speed D

3

→

D

4

or M

3

→

M

4

.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

3. ATF pressure switch 3 and input clutch solenoid valve

AT-238

,

AT-179

4. ATF pressure switch 1 and front brake solenoid valve

AT-234

,

AT-189

5. CAN communication line

AT-103

6. Line pressure test

AT-53

7. Control valve assembly

AT-312

OFF vehicle

8. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

9. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

10. Input clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-362

11. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

12. High and low reverse clutch (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-372

13. Direct clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-374

No shock at all or
the clutch slips
when vehicle
changes speed D

4

→

D

5

or M

4

→

M

5

.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

3. ATF pressure switch 1 and front brake solenoid valve

AT-234

,

AT-189

4. ATF pressure switch 5 and direct clutch solenoid valve

AT-242

,

AT-199

5. CAN communication line

AT-103

6. Line pressure test

AT-53

7. Control valve assembly

AT-312

OFF vehicle

8. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

9. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

10. Front brake [brake band (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)]

AT-342

11. Input clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid Condition

Check"

.)

AT-362

12. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

13. High and low reverse clutch (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-372

Symptom

Condition

Diagnostic Item

Reference page

TROUBLE DIAGNOSIS

AT-75

D

E

F

G

H

I

J

K

L

M

A

B

AT

When you press
the accelerator
pedal and shift
speed D

5

→

D

4

or

M

5

→

M

4

the

engine idles or the
transmission slips.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

3. ATF pressure switch 1 and front brake solenoid valve

AT-234

,

AT-189

4. ATF pressure switch 5 and direct clutch solenoid valve

AT-242

,

AT-199

5. CAN communication line

AT-103

6. Line pressure test

AT-53

7. Control valve assembly

AT-312

OFF vehicle

8. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

9. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

10. Input clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-362

11. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

12. High and low reverse clutch (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-372

13. Direct clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-374

When you press
the accelerator
pedal and shift
speed D

4

→

D

3

or

M

4

→

M

3

the

engine idles or the
transmission slips.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

3. ATF pressure switch 3 and input clutch solenoid valve

AT-238

,

AT-179

4. ATF pressure switch 1 and front brake solenoid valve

AT-234

,

AT-189

5. CAN communication line

AT-103

6. Line pressure test

AT-53

7. Control valve assembly

AT-312

OFF vehicle

8. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

9. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

10. 3rd one-way clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-360

11. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

12. High and low reverse clutch (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-372

13. Forward one-way clutch* (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-19

14. Forward brake* (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-19

Symptom

Condition

Diagnostic Item

Reference page

AT-76

TROUBLE DIAGNOSIS

When you press
the accelerator
pedal and shift
speed D

3

→

D

2

or

M

3

→

M

2

the

engine idles or the
transmission slips.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

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

AT-246

,

AT-209

4. ATF pressure switch 5 and direct clutch solenoid valve

AT-242

,

AT-199

5. CAN communication line

AT-103

6. Line pressure test

AT-53

7. Control valve assembly

AT-312

OFF vehicle

8. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

9. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

10. 3rd one-way clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-360

11. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

12. Direct clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-374

13. Forward brake* (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-19

When you press
the accelerator
pedal and shift
speed D

2

→

D

1

or

M

2

→

M

1

the

engine idles or the
transmission slips.

ON vehicle

1. Fluid level and state

AT-52

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

AT-116

,

AT-165

3. ATF pressure switch 5 and direct clutch solenoid valve

AT-242

,

AT-199

4. CAN communication line

AT-103

5. Line pressure test

AT-53

6. Control valve assembly

AT-312

OFF vehicle

7. Torque converter (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

8. Oil pump assembly (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-357

9. 3rd one-way clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-360

10. 1st one-way clutch (ATF condition “NG” only. Refer to

AT-52, "Fluid

Condition Check"

.)

AT-367

11. Gear system (ATF condition “NG” only. Refer to

AT-52, "Fluid Condi-

tion Check"

.)

AT-334

12. Reverse brake (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-342

13. Forward one-way clutch* (ATF condition “NG” only. Refer to

AT-52,

"Fluid Condition Check"

.)

AT-19

14. Forward brake* (ATF condition “NG” only. Refer to

AT-52, "Fluid Con-

dition Check"

.)

AT-19

Symptom

Condition

Diagnostic Item

Reference page