Infiniti FX35 / FX45. Manual - part 38

AT-80

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

57

Others

Strange noise in “D” 
position.

ON vehicle

1. A/T fluid level and state

AT-49

2. Engine speed signal

AT-112

3. CAN communication line

AT-94

4. Control valve with TCM

AT-215

OFF vehicle

5. Torque converter

AT-267

6. Oil pump assembly

AT-285

7. Gear system

AT-249

8. 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

58

Vehicle does not de-
celerate by engine 
brake.
Refer to 

AT-202, "Ve-

hicle Does Not Decel-
erate by Engine 
Brake"

.

ON vehicle

1. PNP switch

AT-102

2. A/T fluid level and state

AT-49

3. A/T position

AT-207

4. Manual mode switch

AT-155

5. CAN communication line

AT-94

6. Control valve with TCM

AT-215

OFF vehicle

7. Input clutch

AT-289

8. High and low reverse clutch

AT-301

9. Direct clutch

AT-303

59

Engine brake does not 
work M5 

→

 M4.

ON vehicle

1. PNP switch

AT-102

2. A/T fluid level and state

AT-49

3. A/T position

AT-207

4. Manual mode switch

AT-155

5. CAN communication line

AT-94

6. Control valve with TCM

AT-215

OFF vehicle

7. Front brake (brake band) 

AT-267

60

Engine brake does not 
work M4 

→

 M3.

ON vehicle

1. PNP switch

AT-102

2. A/T fluid level and state

AT-49

3. A/T position

AT-207

4. Manual mode switch

AT-155

5. CAN communication line

AT-94

6. Control valve with TCM

AT-215

OFF vehicle

7. Front brake (brake band)

AT-267

8. Input clutch

AT-289

No.

Items

Symptom

Condition

Diagnostic Item

Reference 

page

TROUBLE DIAGNOSIS

AT-81

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

61

Others

Engine brake does not 
work M3 

→

 M2.

ON vehicle

1. PNP switch

AT-102

2. A/T fluid level and state

AT-49

3. A/T position

AT-207

4. Manual mode switch

AT-155

5. CAN communication line

AT-94

6. Control valve with TCM

AT-215

OFF vehicle

7. Front brake (brake band)

AT-267

8. Input clutch

AT-289

9. High and low reverse clutch

AT-301

62

Engine brake does not 
work M2 

→

 M1.

ON vehicle

1. PNP switch

AT-102

2. A/T fluid level and state

AT-49

3. A/T position

AT-207

4. Manual mode switch

AT-155

5. CAN communication line

AT-94

6. Control valve with TCM

AT-215

OFF vehicle

7. Input clutch

AT-289

8. High and low reverse clutch

AT-301

9. Direct clutch

AT-303

63

Maximum speed low.

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. Input clutch

AT-289

10. Gear system

AT-249

11. High and low reverse clutch

AT-301

12. Direct clutch

AT-303

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

AT-82

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

64

Others

Extremely large creep.

ON vehicle

1. Engine idle speed 

EC-84

 (for 

VQ35DE) 

or 

EC-661

 

(for 

VK45DE)

2. CAN communication line

AT-94

OFF vehicle

3. Torque converter

AT-267

65

With selector lever in 
“P” position, vehicle 
does not enter parking 
condition or, with se-
lector lever in another 
position, parking con-
dition is not cancelled.
Refer to 

AT-171, "In 

"P" Position, Vehicle 
Moves When 
Pushed"

.

ON vehicle

1. PNP switch

AT-102

2. A/T position

AT-207

OFF vehicle

3. Parking pawl components

AT-

226

(2WD 

models) or 

AT-267

 

(AWD 

models)

66

Vehicle runs with A/T 
in “P” position.

ON vehicle

1. PNP switch

AT-102

2. A/T fluid level and state

AT-49

3. A/T position

AT-207

4. Control valve with TCM

AT-215

OFF vehicle

5. Parking pawl components

AT-

226

(2WD 

models) or 

AT-267

 

(AWD 

models)

6. Gear system

AT-249

67

Vehicle runs with A/T 
in “N” position.
Refer to 

AT-172, "In 

"N" Position, Vehicle 
Moves"

.

ON vehicle

1. PNP switch

AT-102

2. A/T fluid level and state

AT-49

3. A/T position

AT-207

4. Control valve with TCM

AT-215

OFF vehicle

5. Input clutch

AT-289

6. Gear system

AT-249

7. Direct clutch

AT-303

8. Reverse brake

AT-267

9. 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

10. Low coast 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-83

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

TCM Input/Output Signal Reference Value

INFOID:0000000001327162

A/T ASSEMBLY HARNESS CONNECTOR TERMINAL LAYOUT 

TCM INSPECTION TABLE

68

Others

Engine does not start 
in “N” or “P” position.
Refer to 

AT-170, "En-

gine Cannot Be Start-
ed in "P" or "N" 
Position"

.

ON vehicle

1. Ignition switch and starter

PG-3

, 

SC-

8

2. A/T position

AT-207

3. PNP switch

AT-102

69

Engine starts in posi-
tions other than “N” or 
“P”.

ON vehicle

1. Ignition switch and starter

PG-3

, 

SC-

8

2. A/T position

AT-207

3. PNP switch

AT-102

70

Engine stall.

ON vehicle

1. A/T fluid level and state

AT-49

2. Engine speed signal

AT-112

3. Turbine revolution sensor

AT-106

4. Torque converter clutch solenoid valve

AT-124

5. CAN communication line

AT-94

6. Control valve with TCM

AT-215

OFF vehicle

7. Torque converter

AT-267

71

Engine stalls when se-
lector lever shifted “N” 

→

 “D”, “R”.

ON vehicle

1. A/T fluid level and state

AT-49

2. Engine speed signal

AT-112

3. Turbine revolution sensor

AT-106

4. Torque converter clutch solenoid valve

AT-124

5. CAN communication line

AT-94

6. Control valve with TCM

AT-215

OFF vehicle

7. Torque converter

AT-267

72

Engine speed does 
not return to idle.
Refer to 

AT-194, "En-

gine Speed Does Not 
Return to Idle"

.

ON vehicle

1. A/T fluid level and state

AT-49

2. Direct clutch solenoid valve

AT-147

 

3. Front brake solenoid valve

AT-145

4. Accelerator pedal position sensor

AT-130

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

AT-137

6. CAN communication line

AT-94

7. Control valve with TCM

AT-215

OFF vehicle

8. Front brake (brake band)

AT-267

9. Direct clutch

AT-303

No.

Items

Symptom

Condition

Diagnostic Item

Reference 

page

SCIA1658E