Infiniti FX35 / FX45. Manual - part 61

AT-172

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS FOR SYMPTOMS

In "N" Position, Vehicle Moves

INFOID:0000000001327364

SYMPTOM:

Vehicle moves forward or backward when selecting “N” position.

DIAGNOSTIC PROCEDURE

1.

CHECK PNP SWITCH CIRCUIT

 With CONSULT-III

• Perform self-diagnosis.

 Without CONSULT-III

• Perform self-diagnosis. Refer to 

AT-91, "Diagnosis Procedure without CONSULT-III"

.

Do the self-diagnostic results indicate PNP switch?

YES

>> Check the malfunctioning system. Refer to 

AT-102

.

NO

>> GO TO 2.

2.

CHECK A/T POSITION

Check the A/T position. Refer to 

AT-207, "Checking of A/T Position"

.

OK or NG

OK

>> GO TO 3.

NG

>> Adjust A/T position. Refer to 

AT-207, "Adjustment of A/T

Position"

.

3.

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-11, "Checking A/T Fluid"

.

OK or NG

OK

>> GO TO 4.

NG

>> Refill ATF.

4.

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-215, "Control Valve with TCM and A/T Fluid Temperature Sensor 2"

.

2.

Check A/T fluid condition. Refer to 

AT-49, "Inspections Before

Trouble Diagnosis"

.

OK or NG

OK

>> GO TO 5.

NG

>> Check the malfunction items. If any items are damaged,

repair or replace damaged parts. Refer to 

AT-59, "Symp-

tom Chart"

 (Symptom No.67).

5.

CHECK SYMPTOM

Check again. Refer to “CHECK AT IDLE”.

SCIA2119E

SAT638A

SCIA5199E

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-173

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 6.

6.

CHECK TCM

1.

Check TCM input/output signals. Refer to 

AT-83, "TCM Input/Output Signal Reference Value"

.

2.

If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

Large Shock ("N" to "D" Position)

INFOID:0000000001327365

SYMPTOM:

A noticeable shock occurs when the selector lever is shifted from “N” to “D” position.

DIAGNOSTIC PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULTS

 With CONSULT-III

• Perform self-diagnosis.

 Without CONSULT-III

• Perform self-diagnosis. Refer to 

AT-91, "Diagnosis Procedure without CONSULT-III"

.

Is any malfunction detected by self-diagnostic results?

YES

>> Check the malfunctioning system. Refer to 

AT-84, "CONSULT-III Function (TRANSMISSION)"

,

AT-91, "Diagnosis Procedure without CONSULT-III"

.

NO

>> GO TO 2.

2.

ENGINE IDLE SPEED

Check the engine idle speed. Refer to 

EC-84, "Idle Speed and Ignition Timing Check"

 (for VQ35DE) or 

EC-

661, "Idle Speed and Ignition Timing Check"

 (for VK45DE).

OK or NG

OK

>> GO TO 3.

NG

>> Adjust engine idle speed. Refer to 

EC-84, "Idle Speed and Ignition Timing Check"

 (for VQ35DE)

or 

EC-661, "Idle Speed and Ignition Timing Check"

 (for VK45DE).

3.

CHECK A/T POSITION

Check the A/T position. Refer to 

AT-207, "Checking of A/T Position"

.

OK or NG

OK

>> GO TO 4.

NG

>> Adjust A/T position. Refer to 

AT-207, "Adjustment of A/T

Position"

.

4.

CHECK A/T FLUID LEVEL

SCIA2119E

AT-174

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS FOR SYMPTOMS

Check the A/T fluid level. Refer to 

AT-11, "Checking A/T Fluid"

.

OK or NG

OK

>> GO TO 5.

NG

>> Refill ATF.

5.

CHECK LINE PRESSURE

Check line pressure at idle with selector lever in “D” position. Refer
to 

AT-49, "Inspections Before Trouble Diagnosis"

.

OK or NG

OK

>> GO TO 8.

NG-1

>> Line pressure high: GO TO 6.

NG-2

>> Line pressure low: GO TO 7.

6.

DETECT MALFUNCTIONING ITEM

1.

Check control valve with TCM. Refer to 

AT-215, "Control Valve with TCM and A/T Fluid Temperature Sen-

sor 2"

.

2.

Disassemble A/T. Refer to 

AT-267

.

3.

Check the following.

-

Oil pump assembly. Refer to 

AT-285, "Oil Pump"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

7.

DETECT MALFUNCTIONING ITEM

1.

Check control valve with TCM. Refer to 

AT-215, "Control Valve with TCM and A/T Fluid Temperature Sen-

sor 2"

.

2.

Disassemble A/T. Refer to 

AT-267

.

3.

Check the following.

-

Oil pump assembly. Refer to 

AT-285, "Oil Pump"

.

-

Power train system. Refer to 

AT-267

.

-

Transmission case. Refer to 

AT-267

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

8.

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-215, "Control Valve with TCM and A/T Fluid Temperature Sensor 2"

.

SAT638A

SAT494G

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-175

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

2.

Check A/T fluid condition. Refer to 

AT-49, "Inspections Before

Trouble Diagnosis"

.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 9.

9.

DETECT MALFUNCTIONING ITEM

Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to 

AT-59,

"Symptom Chart"

 (Symptom No.1).

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

10.

CHECK SYMPTOM

Check again. Refer to “CHECK AT IDLE”.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

11.

CHECK TCM

1.

Check TCM input/output signals. Refer to 

AT-83, "TCM Input/Output Signal Reference Value"

.

2.

If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

Vehicle Does Not Creep Backward in "R" Position

INFOID:0000000001327366

SYMPTOM:

The vehicle does not creep in the “R” position. Or an extreme lack of acceleration is observed.

DIAGNOSTIC PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULTS

 With CONSULT-III

• Perform self-diagnosis.

 Without CONSULT-III

• Perform self-diagnosis. Refer to 

AT-91, "Diagnosis Procedure without CONSULT-III"

.

Is any malfunction detected by self-diagnostic results?

YES

>> Check the malfunctioning system. Refer to 

AT-84, "CONSULT-III Function (TRANSMISSION)"

,

AT-91, "Diagnosis Procedure without CONSULT-III"

.

NO

>> GO TO 2.

2.

CHECK A/T POSITION

SCIA5199E