Infiniti FX35 / FX45. Manual - part 29

AT-44

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

DIAGNOSTIC WORKSHEET

Information from Customer

KEY POINTS

• WHAT..... Vehicle and A/T model
• WHEN..... Date, Frequencies
• WHERE..... Road conditions
• HOW..... Operating conditions, Symptoms

*1.

"Information from Customer"

*2.

"Diagnostic Worksheet Chart"

*3.

AT-41

*4.

AT-49

*5.

AT-49

, 

AT-49

*6.

AT-49

*7.

AT-84

*8.

AT-38

*9.

AT-41

*10.

AT-94

*11.

AT-155

*12.

AT-167

*13.

AT-59

*14.

AT-38

*15.

AT-94

*16.

AT-155

*17.

EC-55

 (for VQ35DE) or 

EC-633

 (for 

VK45DE)

SCIA8466E

TROUBLE DIAGNOSIS

AT-45

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

Diagnostic Worksheet Chart

Customer name

MR/MS

Model and Year

VIN

Trans. Model

Engine

Mileage

Malfunction Date

Manuf. Date

In Service Date

Frequency

❏

 Continuous

❏

 Intermittent (

times a day)

Symptoms

❏

 Vehicle does not move.

(

❏

 Any position

❏

 Particular position)

❏

 No up-shift

(

❏

 1st 

→

 2nd

❏

 2nd 

→

 3rd

❏

 3rd 

→

 4th   

❏

 4th 

→

 5th)

❏

 No down-shift

(

❏

 5th 

→

 4th   

❏

 4th 

→

 3rd

❏

 3rd 

→

 2nd

❏

 2nd 

→

 1st)

❏

 Lock-up malfunction

❏

 Shift point too high or too low.

❏

 Shift shock or slip

(

❏

 N 

→

 D

❏

 Lock-up

❏

 Any drive position)

❏

 Noise or vibration

❏

 No kick down

❏

 No pattern select

❏

 Others

(

)

A/T CHECK indicator lamp

❏

 Continuously lit

❏

 Not lit

Malfunction indicator lamp (MIL)

❏

 Continuously lit

❏

 Not lit

1

❏

 Read the item on cautions concerning fail-safe and understand the customer's complaint.

AT-41

2

❏

 A/T fluid inspection

AT-49

❏

 Leak (Repair leak location.)

❏

 State

❏

 Amount

3

❏

 Stall test and line pressure test

AT-49

❏

 Stall test

❏

 Torque converter one-way clutch

❏

 Front brake

❏

 High and low reverse clutch

❏

 Low coast brake

❏

 Forward brake

❏

 Reverse brake

❏

 Forward one-way clutch

❏

 1st one-way clutch

❏

 3rd one-way clutch

❏

 Engine

❏

 Line pressure low

❏

 Except for input clutch and direct 

clutch, clutches and brakes OK

❏

 Line pressure inspection - Suspected part:

AT-46

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

4

❏

 Perform all road tests and enter checks in required inspection items.

AT-49

4-1.

Check before engine is started 

AT-53

❏

 The A/T CHECK Indicator Lamp does come on. 

AT-170

.

❏

 Perform self-diagnostics.   Enter checks for detected items. 

AT-84

, 

AT-91

.

❏

 DTC U1000 CAN COMMUNICATION LINE 

AT-94

.

❏

 DTC P0615 START SIGNAL CIRCUIT 

AT-97

.

❏

 DTC P0700 TCM 

AT-101

❏

 DTC P0705 PARK/NEUTRAL POSITION SWITCH 

AT-102

.

❏

 DTC P0717 TURBINE REVOLUTION SENSOR 

AT-106

.

❏

 DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR) 

AT-108

.

❏

 DTC P0725 ENGINE SPEED SIGNAL 

AT-112

.

❏

 DTC P0731 A/T 1ST GEAR FUNCTION 

AT-114

.

❏

 DTC P0732 A/T 2ND GEAR FUNCTION 

AT-116

.

❏

 DTC P0733 A/T 3RD GEAR FUNCTION 

AT-118

.

❏

 DTC P0734 A/T 4TH GEAR FUNCTION 

AT-120

.

❏

 DTC P0735 A/T 5TH GEAR FUNCTION 

AT-122

.

❏

 DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE 

AT-124

.

❏

 DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) 

AT-126

.

❏

 DTC P0745 LINE PRESSURE SOLONOID VALVE 

AT-128

.

❏

 DTC P1705 THROTTLE POSITION SENSOR 

AT-130

.

❏

 DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT 

AT-132

.

❏

 DTC P1721 VEHICLE SPEED SENSOR MTR 

AT-137

.

❏

 DTC P1730 A/T INTERLOCK 

AT-139

.

❏

 DTC P1731 A/T 1ST ENGINE BRAKING 

AT-141

.

❏

 DTC P1752 INPUT CLUTCH SOLENOID VALVE 

AT-143

.

❏

 DTC P1757 FRONT BRAKE SOLENOID VALVE 

AT-145

.

❏

 DTC P1762 DIRECT CLUTCH SOLENOID VALVE 

AT-147

.

❏

 DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE 

AT-149

.

❏

 DTC P1772 LOW COAST BRAKE SOLENOID VALVE 

AT-151

.

❏

 DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION 

AT-153

.

❏

 DTC P1815 MANUAL MODE SWITCH 

AT-155

.

4-2.

Check at Idle

AT-53

❏

 

AT-170, "Engine Cannot Be Started in "P" or "N" Position"

.

❏

 

AT-171, "In "P" Position, Vehicle Moves When Pushed"

❏

 

AT-172, "In "N" Position, Vehicle Moves"

.

❏

 

AT-173, "Large Shock ("N" to "D" Position)"

.

❏

 

AT-175, "Vehicle Does Not Creep Backward in "R" Position"

.

❏

 

AT-178, "Vehicle Does Not Creep Forward in "D" Position"

.

4-3.

Cruise Test

AT-53

Part 1

❏

 

AT-180, "Vehicle Cannot Be Started from D

1

"

.

❏

 

AT-182, "A/T Does Not Shift: D

1

→

 D

2

"

.

❏

 

AT-184, "A/T Does Not Shift: D

2

→

 D

3

"

.

❏

 

AT-186, "A/T Does Not Shift: D

3

→

 D

4

"

.

❏

 

AT-188, "A/T Does Not Shift: D

4

→

 D

5

"

.

❏

 

AT-190, "A/T Does Not Lock-up"

❏

 

AT-192, "A/T Does Not Hold Lock-up Condition"

.

❏

 

AT-194, "Lock-up Is Not Released"

.

❏

 

AT-194, "Engine Speed Does Not Return to Idle"

.

TROUBLE DIAGNOSIS

AT-47

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

4

4-3.

Part 2

AT-53

❏

 

AT-180, "Vehicle Cannot Be Started from D

1

"

.

❏

 

AT-182, "A/T Does Not Shift: D

1

→

 D

2

"

.

❏

 

AT-184, "A/T Does Not Shift: D

2

→

 D

3

"

.

❏

 

AT-186, "A/T Does Not Shift: D

3

→

 D

4

"

.

Part 3

AT-53

❏

 

AT-195, "Cannot Be Changed to Manual Mode"

.

❏

 

AT-196, "A/T Does Not Shift: 5th Gear 

→

 4th Gear"

.

❏

 

AT-197, "A/T Does Not Shift: 4th Gear 

→

 3rd Gear"

.

❏

 

AT-199, "A/T Does Not Shift: 3rd Gear 

→

 2nd Gear"

.

❏

 

AT-201, "A/T Does Not Shift: 2nd Gear 

→

 1st Gear"

.

❏

 

AT-202, "Vehicle Does Not Decelerate by Engine Brake"

.

❏

 Perform self-diagnostics. Enter checks for detected items. 

AT-84

, 

AT-91

.

❏

 DTC U1000 CAN COMMUNICATION LINE 

AT-94

.

❏

 DTC P0615 START SIGNAL CIRCUIT 

AT-97

.

❏

 DTC P0700 TCM 

AT-101

❏

 DTC P0705 PARK/NEUTRAL POSITION SWITCH 

AT-102

.

❏

 DTC P0717 TURBINE REVOLUTION SENSOR 

AT-106

.

❏

 DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR) 

AT-108

.

❏

 DTC P0725 ENGINE SPEED SIGNAL 

AT-112

.

❏

 DTC P0731 A/T 1ST GEAR FUNCTION 

AT-114

.

❏

 DTC P0732 A/T 2ND GEAR FUNCTION 

AT-116

.

❏

 DTC P0733 A/T 3RD GEAR FUNCTION 

AT-118

.

❏

 DTC P0734 A/T 4TH GEAR FUNCTION 

AT-120

.

❏

 DTC P0735 A/T 5TH GEAR FUNCTION 

AT-122

.

❏

 DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE 

AT-124

.

❏

 DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) 

AT-126

.

❏

 DTC P0745 LINE PRESSURE SOLONOID VALVE 

AT-128

.

❏

 DTC P1705 THROTTLE POSITION SENSOR 

AT-130

.

❏

 DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT 

AT-132

.

❏

 DTC P1721 VEHICLE SPEED SENSOR MTR 

AT-137

.

❏

 DTC P1730 A/T INTERLOCK 

AT-139

.

❏

 DTC P1731 A/T 1ST ENGINE BRAKING 

AT-141

.

❏

 DTC P1752 INPUT CLUTCH SOLENOID VALVE 

AT-143

.

❏

 DTC P1757 FRONT BRAKE SOLENOID VALVE 

AT-145

.

❏

 DTC P1762 DIRECT CLUTCH SOLENOID VALVE 

AT-147

.

❏

 DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE 

AT-149

.

❏

 DTC P1772 LOW COAST BRAKE SOLENOID VALVE 

AT-151

.

❏

 DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION 

AT-153

.

❏

 DTC P1815 MANUAL MODE SWITCH 

AT-155

.

5

❏

 Inspect each system for items found to be NG in the self-diagnostics and repair or replace the malfunctioning parts.

6

❏

 Perform all road tests and enter the checks again for the required items.

AT-49

7

❏

 For any remaining NG items, perform the “diagnostics procedure” and repair or replace the malfunctioning 

parts. See the chart for diagnostics by symptoms. (This chart also contains other symptoms and inspection pro-
cedures.)

AT-59

8

❏

 Erase the results of the self-diagnostics from the TCM and the ECM.

AT-84

, 

AT-

91