Infiniti FX35 / FX45. Manual - part 36

 

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Infiniti FX35 / FX45. Manual - part 36

 

 

AT-72

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

34

Slips/Will 
Not En-
gage

When pressing the ac-
celerator pedal and 
shifting speed D

2

 

 

D

1

 or M2 

 M1 the 

engine idles or the A/T 
slips.

ON vehicle

1. A/T fluid level and state

AT-49

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

AT-108

AT-137

3. Direct clutch solenoid valve

AT-147

4. CAN communication line

AT-94

5. Line pressure test

AT-49

6. Control valve with TCM

AT-215

OFF vehicle

7. Torque converter

AT-267

8. Oil pump assembly

AT-285

9. 3rd one-way clutch

AT-287

10. 1st one-way clutch

AT-295

11. Gear system

AT-249

12. Reverse brake

AT-267

13. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to 

AT-

16, "Cross-Sectional View (2WD Models)"

AT-17, "Cross-

Sectional View (VQ35DE Models for AWD)"

 or 

AT-18, "Cross-

Sectional View (VK45DE Models for AWD)"

)

AT-267

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

AT-16, "Cross-

Sectional View (2WD Models)"

AT-17, "Cross-Sectional View 

(VQ35DE Models for AWD)"

 or 

AT-18, "Cross-Sectional View 

(VK45DE Models for AWD)"

)

AT-267

35

With selector lever in 
“D” position, accelera-
tion is extremely poor.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Accelerator pedal position sensor

AT-130

4. CAN communication line

AT-94

5. PNP switch

AT-102

6. A/T position

AT-207

7. Control valve with TCM

AT-215

OFF vehicle

8. Torque converter

AT-267

9. Oil pump assembly

AT-285

10. 1st one-way clutch

AT-295

11. Gear system

AT-249

12. Reverse brake

AT-267

13. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to 

AT-

16, "Cross-Sectional View (2WD Models)"

AT-17, "Cross-

Sectional View (VQ35DE Models for AWD)"

 or 

AT-18, "Cross-

Sectional View (VK45DE Models for AWD)"

)

AT-267

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

AT-16, "Cross-

Sectional View (2WD Models)"

AT-17, "Cross-Sectional View 

(VQ35DE Models for AWD)"

 or 

AT-18, "Cross-Sectional View 

(VK45DE Models for AWD)"

)

AT-267

No.

Items

Symptom

Condition

Diagnostic Item

Reference 

page

TROUBLE DIAGNOSIS

AT-73

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

36

Slips/Will 
Not En-
gage

With selector lever in 
“R” position, accelera-
tion is extremely poor.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Accelerator pedal position sensor

AT-130

4. High and low reverse clutch solenoid valve

AT-149

5. CAN communication line

AT-94

6. PNP switch

AT-102

7. A/T position

AT-207

8. Control valve with TCM

AT-215

OFF vehicle

9. Gear system

AT-249

10. Output shaft 

AT-267

11. Reverse brake

AT-267

37

While starting off by 
accelerating in 1st, en-
gine races or slippage 
occurs.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Accelerator pedal position sensor

AT-130

4. CAN communication line

AT-94

5. Control valve with TCM

AT-215

OFF vehicle

6. Torque converter

AT-267

7. Oil pump assembly

AT-285

8. 3rd one-way clutch

AT-287

9. 1st one-way clutch

AT-295

10. Gear system

AT-249

11. Reverse brake

AT-267

12. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to 

AT-

16, "Cross-Sectional View (2WD Models)"

AT-17, "Cross-

Sectional View (VQ35DE Models for AWD)"

 or 

AT-18, "Cross-

Sectional View (VK45DE Models for AWD)"

)

AT-267

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

AT-16, "Cross-

Sectional View (2WD Models)"

AT-17, "Cross-Sectional View 

(VQ35DE Models for AWD)"

 or 

AT-18, "Cross-Sectional View 

(VK45DE Models for AWD)"

)

AT-267

No.

Items

Symptom

Condition

Diagnostic Item

Reference 

page

AT-74

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

38

Slips/Will 
Not En-
gage

While accelerating in 
2nd, engine races or 
slippage occurs.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Accelerator pedal position sensor

AT-130

4. CAN communication line

AT-94

5. Direct clutch solenoid valve

AT-147

6. Control valve with TCM

AT-215

OFF vehicle

7. Torque converter

AT-267

8. Oil pump assembly

AT-285

9. 3rd one-way clutch

AT-287

10. Gear system

AT-249

11. Direct clutch

AT-303

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

AT-16, "Cross-

Sectional View (2WD Models)"

AT-17, "Cross-Sectional View 

(VQ35DE Models for AWD)"

 or 

AT-18, "Cross-Sectional View 

(VK45DE Models for AWD)"

)

AT-267

39

While accelerating in 
3rd, engine races or 
slippage occurs.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Accelerator pedal position sensor

AT-130

4. CAN communication line

AT-94

5. High and low reverse clutch solenoid valve

AT-149

 

6. Control valve with TCM

AT-215

OFF vehicle

7. Torque converter

AT-267

8. Oil pump assembly

AT-285

9. 3rd one-way clutch

AT-287

10. Gear system

AT-249

11. High and low reverse clutch

AT-301

12. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to 

AT-

16, "Cross-Sectional View (2WD Models)"

AT-17, "Cross-

Sectional View (VQ35DE Models for AWD)"

 or 

AT-18, "Cross-

Sectional View (VK45DE Models for AWD)"

)

AT-267

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

AT-16, "Cross-

Sectional View (2WD Models)"

AT-17, "Cross-Sectional View 

(VQ35DE Models for AWD)"

 or 

AT-18, "Cross-Sectional View 

(VK45DE Models for AWD)"

)

AT-267

No.

Items

Symptom

Condition

Diagnostic Item

Reference 

page

TROUBLE DIAGNOSIS

AT-75

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

40

Slips/Will 
Not En-
gage

While accelerating in 
4th, engine races or 
slippage occurs.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Accelerator pedal position sensor

AT-130

4. CAN communication line

AT-94

5. Input clutch solenoid valve

AT-143

6. Control valve with TCM

AT-215

OFF vehicle

7. Torque converter

AT-267

8. Oil pump assembly

AT-285

9. Input clutch

AT-289

10. Gear system

AT-249

11. High and low reverse clutch

AT-301

12. Direct clutch

AT-303

41

While accelerating in 
5th, engine races or 
slippage occurs.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Accelerator pedal position sensor

AT-130

4. CAN communication line

AT-94

5. Front brake solenoid valve

AT-145

6. Control valve with TCM

AT-215

OFF vehicle

7. Torque converter

AT-267

8. Oil pump assembly 

AT-285

9. Front brake (brake band)

AT-267

10. Input clutch

AT-289

11. Gear system

AT-249

12. High and low reverse clutch

AT-301

42

Slips at lock-up.

ON vehicle

1. A/T fluid level and state

AT-49

2. Line pressure test

AT-49

3. Engine speed signal

AT-112

4. Turbine revolution sensor

AT-106

5. Torque converter clutch solenoid valve

AT-124

6. CAN communication line

AT-94

7. Control valve with TCM

AT-215

OFF vehicle

8. Torque converter

AT-267

9. Oil pump assembly

AT-285

No.

Items

Symptom

Condition

Diagnostic Item

Reference 

page

 

 

 

 

 

 

 

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