2008 INFINITI FX35 torque

AT-2
Possible Cause ......................................................101
DTC Confirmation Procedure ................................101
Diagnosis Procedure .............................................101
DTC P0705 PARK/NEUTRAL POSITION
SWITCH ...........................................................
102
Description ........................................................... ..102
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
102
On Board Diagnosis Logic .....................................102
Possible Cause ......................................................102
DTC Confirmation Procedure ................................102
Wiring Diagram - AT - PNP/SW .............................103
Diagnosis Procedure .............................................103
DTC P0717 TURBINE REVOLUTION SEN-
SOR ..................................................................
106
Description ........................................................... ..106
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
106
On Board Diagnosis Logic .....................................106
Possible Cause ......................................................106
DTC Confirmation Procedure ................................106
Diagnosis Procedure .............................................106
DTC P0720 VEHICLE SPEED SENSOR A/T
(REVOLUTION SENSOR) ...............................
108
Description ........................................................... ..108
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
108
On Board Diagnosis Logic .....................................108
Possible Cause ......................................................108
DTC Confirmation Procedure ................................108
Wiring Diagram - AT - VSSA/T ..............................109
Diagnosis Procedure ........................................... ..110
DTC P0725 ENGINE SPEED SIGNAL ............112
Description ........................................................... ..112
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
112
On Board Diagnosis Logic .....................................112
Possible Cause ......................................................112
DTC Confirmation Procedure ................................112
Diagnosis Procedure .............................................112
DTC P0731 A/T 1ST GEAR FUNCTION .........114
Description ........................................................... ..114
On Board Diagnosis Logic .....................................114
Possible Cause ......................................................114
DTC Confirmation Procedure ................................114
Diagnosis Procedure .............................................115
DTC P0732 A/T 2ND GEAR FUNCTION .........116
Description ........................................................... ..116
On Board Diagnosis Logic .....................................116
Possible Cause ......................................................116
DTC Confirmation Procedure ................................116
Diagnosis Procedure .............................................117
DTC P0733 A/T 3RD GEAR FUNCTION .........118
Description ........................................................... .118
On Board Diagnosis Logic ....................................118
Possible Cause .....................................................118
DTC Confirmation Procedure ................................118
Diagnosis Procedure .............................................119
DTC P0734 A/T 4TH GEAR FUNCTION ..........120
Description ........................................................... .120
On Board Diagnosis Logic ....................................120
Possible Cause .....................................................120
DTC Confirmation Procedure ................................120
Diagnosis Procedure .............................................121
DTC P0735 A/T 5TH GEAR FUNCTION ..........122
Description ........................................................... .122
On Board Diagnosis Logic ....................................122
Possible Cause .....................................................122
DTC Confirmation Procedure ................................122
Diagnosis Procedure .............................................123
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE ..........................................
124
Description ........................................................... .124
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
124
On Board Diagnosis Logic ....................................124
Possible Cause .....................................................124
DTC Confirmation Procedure ................................124
Diagnosis Procedure .............................................124
DTC P0744 A/T TCC S/V FUNCTION (LOCK-
UP) ....................................................................
126
Description ........................................................... .126
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
126
On Board Diagnosis Logic ....................................126
Possible Cause .....................................................126
DTC Confirmation Procedure ................................126
Diagnosis Procedure .............................................126
DTC P0745 LINE PRESSURE SOLENOID
VALVE ..............................................................
128
Description ........................................................... .128
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
128
On Board Diagnosis Logic ....................................128
Possible Cause .....................................................128
DTC Confirmation Procedure ................................128
Diagnosis Procedure .............................................128
DTC P1705 THROTTLE POSITION SENSOR ..130
Description ........................................................... .130
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
130
On Board Diagnosis Logic ....................................130
Possible Cause .....................................................130
DTC Confirmation Procedure ................................130
Diagnosis Procedure .............................................130
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AT-8
< SERVICE INFORMATION >
PRECAUTIONS
After performing each TROUBLE DIAGNOSIS, perform “DTC
(Diagnostic Trouble Code) Confirmation Procedure”.
If the repair is completed the DTC should not be displayed in
the “DTC Confirmation Procedure”.
 Always use the specified brand of ATF. Refer to MA-9, "
Fluids and Lubricants".
 Use lint-free paper not cloth rags during work.
 After replacing the ATF, dispose of the waste oil using the methods prescribed by law, ordinance, etc.
 Before proceeding with disassembly, thoroughly clean the out side of the transmission. It is important to pre-
vent the internal parts from becoming cont aminated by dirt or other foreign matter.
 Disassembly should be done in a clean work area.
 Use lint-free paper or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transmission.
 Place disassembled parts in order for easier and proper assembly.
 All parts should be carefully cleansed with a general purpose, non-flammable solvent before inspection or
reassembly.
 Gaskets, seals and O-rings should be replaced any time the transmission is disassembled.
 It is very important to perform functional tests whenever they are indicated.
 The valve body contains precision parts and requires extreme care when parts are removed and serviced. Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs
and small parts from becoming scattered or lost.
 Properly installed valves, sleeves, plugs, etc. will s lide along bores in valve body under their own weight.
 Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings and
seals, or hold bearings and washers in place during assembly. Do not use grease.
 Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
 After overhaul, refill the transmission with new ATF.
 When the A/T drain plug is removed, only some of t he ATF is drained. Old ATF will remain in torque con-
verter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer to
AT- 11 , "
Changing A/T Fluid", AT- 11 , "Checking A/T Fluid".
Service Notice or PrecautionINFOID:0000000001327125
ATF COOLER SERVICE
If ATF contains frictional material (clutches, bands, etc. ), or if an A/T is repaired, overhauled, or replaced,
inspect and clean the A/T fluid cooler mounted in the radiat or or replace the radiator. Flush cooler lines using
cleaning solvent and compressed air after repair. For A/T fluid cooler cleaning procedure, refer to AT-13, "
A/T
Fluid Cooler Cleaning". For radiator replacement, refer to CO-13 (for VQ35DE), CO-40 (for VK45DE).
OBD-II SELF-DIAGNOSIS
 A/T self-diagnosis is performed by the TCM in comb ination with the ECM. The results can be read through
the blinking pattern of the A/T CHECK indicator or the malfunction indicator lamp (MIL). Refer to the table on
AT-84, "
CONSULT-III Function (TRANSMISSION)" for the indicator used to display each self-diagnostic
result.
 The self-diagnostic results indicated by the MIL ar e automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure on AT-38, "
OBD-II Diagnostic Trouble Code (DTC)" to complete the
repair and avoid unnecessary blinking of the MIL.
For details of OBD-II, refer to EC-54
(for VQ35DE) or EC-632 (for VK45DE).
 Certain systems and components, especially those re lated to OBD, may use the new style slide-lock-
ing type harness connector. For descrip tion and how to disconnect, refer to PG-68
.
SEF217U
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AT-16
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
A/T CONTROL SYSTEM
Cross-Sectional View (2WD Models)INFOID:0000000001327131
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. Front brake 14. 3rd one-way clutch 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Rear extension 20. Output shaft
SCIA5262E
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A/T CONTROL SYSTEMAT-17
< SERVICE INFORMATION >
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Cross-Sectional View (VQ35DE Models for AWD)INFOID:0000000001327132
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. Front brake 14. 3rd one-way clutch 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Adapter case 20. Output shaft
SCIA5263E
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AT-18
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
Cross-Sectional View (V K45DE Models for AWD)
INFOID:0000000001327133
Shift MechanismINFOID:0000000001327134
The A/T uses compact triple planetary gear systems to improve power transmission efficiency, simplify con-
struction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. Front brake 14. 3rd one-way clutch 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Adapter case 20. Output shaft
SCIA5268E
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AT-20
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
CLUTCH AND BAND CHART
POWER TRANSMISSION
“N” Position
Since both the forward brake and the reverse brake are released, torque from the input shaft drive is not trans-
mitted to the output shaft.
“P” Position
SCIA6962E
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A/T CONTROL SYSTEMAT-21
< SERVICE INFORMATION >
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 The same as for the “N” position, both the forward brake and the reverse brake are released, so torque from the input shaft drive is not transmitted to the output shaft.
 The parking pawl linked with the selector lever mes hes with the parking gear and fastens the output shaft
mechanically.
“D1” Position
 The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.
 The 1st one-way clutch regulates reverse rotation of the rear sun gear.
 The 3rd one-way clutch regulates reverse rotation of the front sun gear.
 During deceleration, the mid sun gear turns forwar d, so the forward one-way clutch idles and the engine
brake is not activated.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
PCIA0003J
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A/T CONTROL SYSTEMAT-29
< SERVICE INFORMATION >
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TCM FunctionINFOID:0000000001327135
The function of the TCM is to:
 Receive input signals sent from various switches and sensors.
 Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
 Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating condi tions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
SCIA1519E
SENSORS (or SIGNALS)
⇒TCM
⇒ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Manual mode switch signal
Stop lamp switch signal
Turbine revolution sensor
ATF pressure switch Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-III co
mmunication
line
Duet-EA control
CAN system Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch sole-
noid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay
: