lock INFINITI FX35 2004 Service Manual

ABCDEFGHIJKMLQUICK REFERENCE INDEX AGENERAL INFORMATIONGIGeneral InformationBENGINEEMEngine MechanicalLUEngine Lubrication SystemCOEngine Cooling SystemECEngine Control SystemFLFuel SystemEXExhaust SystemACCAccelerator Control SystemCTRANSMISSION/
TRANSAXLEATAutomatic TransmissionDDRIVELINE/AXLETFTransferPRPropeller ShaftFFDFront Final DriveRFDRear Final DriveFAXFront AxleRAXRear AxleESUSPENSIONFSUFront SuspensionRSURear SuspensionWTRoad Wheels & TiresFBRAKESBRBrake SystemPBParking Brake SystemBRCBrake Control SystemGSTEERINGPSPower Steering SystemHRESTRAINTSSBSeat BeltsSRSSupplemental Restraint System
(SRS)IBODYBLBody, Lock & Security SystemGWGlasses, Window System & Mir-
rorsRFRoofEIExterior & InteriorIPInstrument PanelSESeatJAIR CONDITIONERATCAutomatic Air ConditionerKELECTRICALSCStarting & Charging SystemLTLighting SystemDIDriver Information SystemWWWiper, Washer & HornBCSBody Control SystemLANLAN SystemAVAudio Visual, Navigation & Tele-
phone SystemACSAuto Cruise Control SystemPGPower Supply, Ground & Circuit Ele-
mentsLMAINTENANCEMAMaintenanceMINDEXIDXAlphabetical IndexEdition: July 2003
Revision: November 2004

AT-1
AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION AT
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AUTOMATIC TRANSMISSION
INDEX FOR DTC ........................................................ 5
Alphabetical Index .................................................... 5
DTC No. Index ......................................................... 6
PRECAUTIONS .......................................................... 7
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 7
Precautions for On Board Diagnostic (OBD) System
of A/T and Engine .................................................... 7
Precautions .............................................................. 8
Service Notice or Precautions .................................. 9
Wiring Diagrams and Trouble Diagnosis .................. 9
PREPARATION ......................................................... 10
Special Service Tools ............................................. 10
Commercial Service Tools ....................................... 11
A/T FLUID ................................................................. 12
Changing A/T Fluid ................................................ 12
Checking A/T Fluid ................................................. 12
A/T Fluid Cooler Cleaning ...................................... 14
A/T CONTROL SYSTEM .......................................... 17
Cross-Sectional View (2WD Models) ..................... 17
Cross-Sectional View (AWD Models) ..................... 18
Shift Mechanism ..................................................... 19
TCM Function ......................................................... 30
CAN Communication .............................................. 31
Input/Output Signal of TCM .................................... 31
Line Pressure Control ............................................ 32
Shift Control ........................................................... 33
Lock-up Control ...................................................... 34
Engine Brake Control ............................................. 36
Control Valve .......................................................... 36
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 38
Introduction ............................................................ 38
OBD-II Function for A/T System ............................. 38
One or Two Trip Detection Logic of OBD-II ............ 38
OBD-II Diagnostic Trouble Code (DTC) ................. 38
Malfunction Indicator Lamp (MIL) ........................... 41
TROUBLE DIAGNOSIS ............................................ 42
DTC Inspection Priority Chart ................................ 42
Fail-Safe ................................................................. 42How To Perform Trouble Diagnosis For Quick and
Accurate Repair ...................................................... 44
A/T Electrical Parts Location .................................. 49
Circuit Diagram ....................................................... 50
Inspections Before Trouble Diagnosis .................... 51
Check Before Engine is Started .............................. 55
Check at Idle ........................................................... 55
Cruise Test - Part 1 ................................................. 57
Cruise Test - Part 2 ................................................. 60
Cruise Test - Part 3 ................................................. 61
Vehicle Speed When Shifting Gears ...................... 62
Vehicle Speed When Performing and Releasing
Complete Lock-up .................................................. 63
Vehicle Speed When Performing and Releasing
Slip Lock-up ............................................................ 64
Symptom Chart ....................................................... 65
TCM Input/Output Signal Reference Values ........... 90
CONSULT-II ............................................................ 91
Diagnostic Procedure Without CONSULT-II .........103
DTC U1000 CAN COMMUNICATION LINE ............105
Description ............................................................105
On Board Diagnosis Logic ....................................105
Possible Cause .....................................................105
DTC Confirmation Procedure ...............................105
Wiring Diagram — AT — CAN ..............................106
Diagnostic Procedure ...........................................107
DTC P0615 START SIGNAL CIRCUIT ...................108
Description ............................................................108
CONSULT-II Reference Value ..............................108
On Board Diagnosis Logic ....................................108
Possible Cause .....................................................108
DTC Confirmation Procedure ...............................108
Wiring Diagram — AT — STSIG ..........................109
Diagnostic Procedure ...........................................110
DTC P0705 PARK/NEUTRAL POSITION SWITCH .112
Description ............................................................112
CONSULT-II Reference Value ..............................112
On Board Diagnosis Logic ....................................112
Possible Cause .....................................................112
DTC Confirmation Procedure ...............................112

AT-2Revision: 2004 November 2004 FX35/FX45Wiring Diagram — AT — PNP/SW .......................113
Diagnostic Procedure ...........................................114
DTC P0720 VEHICLE SPEED SENSOR A/T (REV-
OLUTION SENSOR) ...............................................116
Description ............................................................116
CONSULT-II Reference Value ..............................116
On Board Diagnosis Logic ....................................116
Possible Cause .....................................................116
DTC Confirmation Procedure ...............................116
Wiring Diagram — AT — VSSA/T .........................118
Diagnostic Procedure ...........................................119
DTC P0725 ENGINE SPEED SIGNAL ...................121
Description ............................................................121
CONSULT-II Reference Value ..............................121
On Board Diagnosis Logic ....................................121
Possible Cause .....................................................121
DTC Confirmation Procedure ...............................121
Diagnostic Procedure ...........................................121
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE .................................................123
Description ............................................................123
CONSULT-II Reference Value ..............................123
On Board Diagnosis Logic ....................................123
Possible Cause .....................................................123
DTC Confirmation Procedure ...............................123
Diagnostic Procedure ...........................................124
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .125
Description ............................................................125
CONSULT-II Reference Value ..............................125
On Board Diagnosis Logic ....................................125
Possible Cause .....................................................125
DTC Confirmation Procedure ...............................125
Diagnostic Procedure ...........................................126
DTC P0745 LINE PRESSURE SOLENOID VALVE .127
Description ............................................................127
CONSULT-II Reference Value ..............................127
On Board Diagnosis Logic ....................................127
Possible Cause .....................................................127
DTC Confirmation Procedure ...............................127
Diagnostic Procedure ...........................................128
DTC P1701 TRANSMISSION CONTROL MODULE
(POWER SUPPLY) ..................................................129
Description ............................................................129
On Board Diagnosis Logic ....................................129
Possible Cause .....................................................129
DTC Confirmation Procedure ...............................129
Wiring Diagram — AT — POWER ........................130
Diagnostic Procedure ...........................................131
DTC P1702 TRANSMISSION CONTROL MODULE
(RAM) ......................................................................133
Description ............................................................133
On Board Diagnosis Logic ....................................133
Possible Cause .....................................................133
DTC Confirmation Procedure ...............................133
Diagnostic Procedure ...........................................133
DTC P1703 TRANSMISSION CONTROL MODULE
(ROM) ......................................................................134
Description ............................................................134
On Board Diagnosis Logic ....................................134Possible Cause .....................................................134
DTC Confirmation Procedure ................................134
Diagnostic Procedure ............................................134
DTC P1704 TRANSMISSION CONTROL MODULE
(EEPROM) ...............................................................135
Description ............................................................135
On Board Diagnosis Logic ....................................135
Possible Cause .....................................................135
DTC Confirmation Procedure ................................135
Diagnostic Procedure ............................................135
DTC P1705 THROTTLE POSITION SENSOR ........136
Description ............................................................136
CONSULT-II Reference Value ...............................136
On Board Diagnosis Logic ....................................136
Possible Cause .....................................................136
DTC Confirmation Procedure ................................136
Diagnostic Procedure ............................................136
DTC P1710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................139
Description ............................................................139
CONSULT-II Reference Value ...............................139
On Board Diagnosis Logic ....................................139
Possible Cause .....................................................139
DTC Confirmation Procedure ................................139
Wiring Diagram — AT — FTS ...............................140
Diagnostic Procedure ............................................141
Component Inspection ..........................................142
DTC P1716 TURBINE REVOLUTION SENSOR ....143
Description ............................................................143
CONSULT-II Reference Value ...............................143
On Board Diagnosis Logic ....................................143
Possible Cause .....................................................143
DTC Confirmation Procedure ................................143
Diagnostic Procedure ............................................144
DTC P1721 VEHICLE SPEED SENSOR MTR .......145
Description ............................................................145
CONSULT-II Reference Value ...............................145
On Board Diagnosis Logic ....................................145
Possible Cause .....................................................145
DTC Confirmation Procedure ................................145
Diagnostic Procedure ............................................146
DTC P1730 A/T INTERLOCK .................................147
Description ............................................................147
On Board Diagnosis Logic ....................................147
Possible Cause .....................................................147
DTC Confirmation Procedure ................................147
Judgement of A/T Interlock ...................................147
Diagnostic Procedure ............................................148
DTC P1731 A/T 1ST ENGINE BRAKING ...............150
Description ............................................................150
CONSULT-II Reference Value ...............................150
On Board Diagnosis Logic ....................................150
Possible Cause .....................................................150
DTC Confirmation Procedure ................................150
Diagnostic Procedure ............................................151
DTC P1752 INPUT CLUTCH SOLENOID VALVE ..152
Description ............................................................152
CONSULT-II Reference Value ...............................152
On Board Diagnosis Logic ....................................152

AT-4Revision: 2004 November 2004 FX35/FX45CONSULT-II Reference Value ..............................187
Diagnostic Procedure ...........................................187
TROUBLE DIAGNOSIS FOR SYMPTOMS ............188
Wiring Diagram — AT — NONDTC ......................188
A/T CHECK Indicator Lamp Does Not Come On . 191
Engine Cannot Be Started In “P” or “N” Position ..193
In “P” Position, Vehicle Moves When Pushed ......193
In “N” Position, Vehicle Moves ..............................194
Large Shock (“N” to “D” Position) .........................195
Vehicle Does Not Creep Backward In “R” Position .198
Vehicle Does Not Creep Forward In “D” Position . 201
Vehicle Cannot Be Started From D
1 .....................203
A/T Does Not Shift: D
1 → D2 ................................206
A/T Does Not Shift: D
2 → D3 ................................208
A/T Does Not Shift: D
3 → D4 ................................211
A/T Does Not Shift: D
4 → D5 ................................213
A/T Does Not Perform Lock-up ............................216
A/T Does Not Hold Lock-up Condition ..................218
Lock-up Is Not Released ......................................220
Engine Speed Does Not Return To Idle ................221
Cannot Be Changed to Manual Mode ..................222
A/T Does Not Shift: 5th gear → 4th gear ..............223
A/T Does Not Shift: 4th gear → 3rd gear ..............225
A/T Does Not Shift: 3rd gear → 2nd gear .............227
A/T Does Not Shift: 2nd gear → 1st gear .............229
Vehicle Does Not Decelerate By Engine Brake ....231
SHIFT CONTROL SYSTEM ....................................233
Control Device Removal and Installation ..............233
Adjustment of A/T Position ...................................234
Checking of A/T Position ......................................234
A/T SHIFT LOCK SYSTEM .....................................235
Description ............................................................235
Shift Lock System Electrical Parts Location .........235
Wiring Diagram — AT — SHIFT ...........................236
Diagnostic Procedure ...........................................237
KEY INTERLOCK CABLE ......................................239
Components .........................................................239
Removal and Installation ......................................240
ON-VEHICLE SERVICE ..........................................242
Control Valve with TCM and A/T Fluid Temperature
Sensor 2 ...............................................................242
Parking Components (2WD Models Only) ............253Rear Oil Seal .........................................................259
Revolution Sensor Components (2WD Models
Only) .....................................................................260
AIR BREATHER HOSE ...........................................264
Removal and Installation .......................................264
TRANSMISSION ASSEMBLY .................................266
Removal and Installation (2WD Models) ...............266
Removal and Installation (AWD models) ..............269
OVERHAUL .............................................................274
Components ..........................................................274
Oil Channel ...........................................................282
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................284
DISASSEMBLY .......................................................286
Disassembly ..........................................................286
REPAIR FOR COMPONENT PARTS ......................303
Oil Pump ...............................................................303
Front Sun Gear, 3rd One-Way Clutch ...................306
Front Carrier, Input Clutch, Rear Internal Gear .....308
Mid Sun Gear, Rear Sun Gear, High and Low
Reverse Clutch Hub ..............................................314
High and Low Reverse Clutch ..............................320
Direct Clutch .........................................................323
ASSEMBLY .............................................................325
Assembly (1) .........................................................325
Adjustment ............................................................338
Assembly (2) .........................................................341
SERVICE DATA AND SPECIFICATIONS (SDS) ....348
General Specifications ..........................................348
Vehicle Speed When Shifting Gears .....................348
Vehicle Speed When Performing and Releasing
Complete Lock-up .................................................349
Vehicle Speed When Performing and Releasing
Slip Lock-up ..........................................................349
Stall Speed ............................................................350
Line Pressure ........................................................350
A/T Fluid Temperature Sensor ..............................350
Turbine Revolution Sensor ....................................350
Vehicle Speed Sensor A/T (Revolution Sensor) ...350
Reverse Brake ......................................................350
Total End Play .......................................................351

INDEX FOR DTC
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Revision: 2004 November 2004 FX35/FX45
INDEX FOR DTCPFP:00024
Alphabetical Index ACS0079V
NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to AT- 1 0 5
.
*1: These numbers are prescribed by SAE J2012.
*2: For VQ35DE engine.
*3: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.Items
(CONSULT-II screen terms) DTC
Reference page OBD-II Except OBD-II
CONSULT-II (GST*1) CONSULT-II only “A/T”
A/T 1ST E/BRAKING — P1731AT- 1 5 0
ATF PRES SW 1/CIRC — P1841AT- 1 7 8
ATF PRES SW 3/CIRC — P1843AT- 1 8 0
ATF PRES SW 5/CIRC — P1845AT- 1 8 2
ATF PRES SW 6/CIRC — P1846AT- 1 8 4
A/T INTERLOCK P1730 P1730AT- 1 4 7
A/T TCC S/V FNCTN P0744 P0744 AT- 1 2 5
ATF TEMP SEN/CIRC P0710 P1710AT- 1 3 9
CAN COMM CIRCUIT U1000 U1000AT- 1 0 5
D/C SOLENOID/CIRC P1762 P1762AT- 1 6 0
D/C SOLENOID FNCTN P1764 (*3) P1764 AT- 1 6 2
ENGINE SPEED SIG P0725 (*2) P0725AT- 1 2 1
FR/B SOLENOID/CIRC P1757 P1757AT- 1 5 6
FR/B SOLENOID FNCT P1759 P1759 AT- 1 5 8
HLR/C SOL/CIRC P1767 P1767AT- 1 6 4
HLR/C SOL FNCTN P1769 (*3) P1769 AT- 1 6 6
I/C SOLENOID/CIRC P1752 P1752AT- 1 5 2
I/C SOLENOID FNCTN P1754 (*3) P1754 AT- 1 5 4
L/PRESS SOL/CIRC P0745 P0745AT- 1 2 7
LC/B SOLENOID/CIRC P1772 P1772AT- 1 6 8
LC/B SOLENOID FNCT P1774 P1774 AT- 1 7 0
MANU MODE SW/CIR — P1815AT- 1 7 2
PNP SW/CIRC P0705 P0705AT- 11 2
STARTER RELAY/CIRC — P0615AT- 1 0 8
TCC SOLENOID/CIRC P0740 P0740AT- 1 2 3
TCM·EEPROM — P1704AT- 1 3 5
TCM-POWER SUPPLY — P1701AT- 1 2 9
TCM·RAM — P1702AT- 1 3 3
TCM·ROM — P1703AT- 1 3 4
TP SEN/CIRC A/T P1705 (*2) P1705AT- 1 3 6
TURBINE REV S/CIRC P1716 P1716AT- 1 4 3
VEH SPD SE/CIR·MTR — P1721AT- 1 4 5
VEH SPD SEN/CIR AT P0720 P0720AT- 11 6

AT-6
INDEX FOR DTC
Revision: 2004 November 2004 FX35/FX45
DTC No. Index ACS0079W
NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to AT- 1 0 5
.
*1: These numbers are prescribed by SAE J2012.
*2: For VQ35DE engine.
*3: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.DTC
Items
(CONSULT-II screen terms)Reference page OBD-II Except OBD-II
CONSULT-II GST (*1) CONSULT-II only “A/T”
— P0615 STARTER RELAY/CIRCAT-108
P0705 P0705 PNP SW/CIRCAT- 11 2
P0710 P1710 ATF TEMP SEN/CIRCAT-139
P0720 P0720 VEH SPD SEN/CIR ATAT- 11 6
P0725 (*2) P0725 ENGINE SPEED SIGAT-121
P0740 P0740 TCC SOLENOID/CIRCAT-123
P0744 P0744 A/T TCC S/V FNCTNAT-125
P0745 P0745 L/PRESS SOL/CIRCAT-127
— P1701 TCM-POWER SUPPLYAT-129
— P1702 TCM·RAMAT-133
— P1703 TCM·ROMAT-134
— P1704 TCM·EEPROMAT-135
P1705 (*2) P1705 TP SEN/CIRC A/TAT-136
P1716 P1716 TURBINE REV S/CIRCAT-143
— P1721 VEH SPD SE/CIR·MTRAT-145
P1730 P1730 A/T INTERLOCKAT-147
— P1731 A/T 1ST E/BRAKINGAT-150
P1752 P1752 I/C SOLENOID/CIRCAT-152
P1754 (*3) P1754 I/C SOLENOID FNCTNAT-154
P1757 P1757 FR/B SOLENOID/CIRCAT-156
P1759 (*3) P1759 FR/B SOLENOID FNCTAT-158
P1762 P1762 D/C SOLENOID/CIRCAT-160
P1764 (*3) P1764 D/C SOLENOID FNCTNAT-162
P1767 P1767 HLR/C SOL/CIRCAT-164
P1769 P1769 HLR/C SOL FNCTNAT-166
P1772 P1772 LC/B SOLENOID/CIRCAT-168
P1774 P1774 LC/B SOLENOID FNCTAT-170
— P1815 MANU MODE SW/CIRCAT-172
— P1841 ATF PRES SW 1/CIRCAT-178
— P1843 ATF PRES SW 3/CIRCAT-180
— P1845 ATF PRES SW 5/CIRCAT-182
— P1846 ATF PRES SW 6/CIRCAT-184
U1000 U1000 CAN COMM CIRCUITAT-105

PRECAUTIONS
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Revision: 2004 November 2004 FX35/FX45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
ACS002L3
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for On Board Diagnostic (OBD) System of A/T and EngineACS002L5
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch “OFF” and disconnect the battery cable from the negative ter-
minal before any repair or inspection work. The open/short circuit of related switches, sensors,
solenoid valves, etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MIL to light up due to a short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.

PRECAUTIONS
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Revision: 2004 November 2004 FX35/FX45
Service Notice or PrecautionsACS002L7
ATF COOLER SERVICE
If A/T fluid 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 radiator 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- 1 4 , "
A/T
Fluid Cooler Cleaning" . For radiator replacement, refer to CO-14, "RADIATOR" (for VQ35DE) or CO-39,
"RADIATOR" (for VK45DE).
OBD-II SELF-DIAGNOSIS

A/T self-diagnosis is performed by the TCM in combination 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- 9 4 , "
SELF-DIAGNOSTIC RESULT MODE" for the indicator used to display each self-diagnostic
result.

The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM mem-
ories.
Always perform the procedure on AT- 3 9 , "
HOW TO ERASE DTC" to complete the repair and avoid
unnecessary blinking of the MIL.
For details of OBD-II, refer to EC-53, "
ON BOARD DIAGNOSTIC (OBD) SYSTEM" (for VQ35DE) or EC-703,
"ON BOARD DIAGNOSTIC (OBD) SYSTEM" (for VK45DE).

Certain systems and components, especially those related to OBD, may use the new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-74, "
HAR-
NESS CONNECTOR" .
Wiring Diagrams and Trouble DiagnosisACS002L8
When you read wiring diagrams, refer to the following:

GI-15, "How to Read Wiring Diagrams".

PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.
When you perform trouble diagnosis, refer to the following:

GI-11, "How to Follow Trouble Diagnoses".

GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident".

AT-14
A/T FLUID
Revision: 2004 November 2004 FX35/FX45
10. Tighten the level gauge bolt.
A/T Fluid Cooler CleaningACS007A1
Whenever an automatic transmission is replaced, the A/T fluid cooler mounted in the radiator must be
inspected and cleaned.
Metal debris and friction material, if present, can become trapped in the A/T fluid cooler. This debris can con-
taminate the newly serviced A/T or, in severe cases, can block or restrict the flow of A/T fluid. In either case,
malfunction of the newly serviced A/T may result.
Debris, if present, may build up as A/T fluid enters the cooler inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.
A/T FLUID COOLER CLEANING PROCEDURE
1. Position an oil pan under the automatic transmission's inlet and outlet cooler hoses.
2. Identify the inlet and outlet fluid cooler hoses.
3. Disconnect the fluid cooler inlet and outlet rubber hoses from the
steel cooler tubes or bypass valve.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
4. Allow any A/T fluid that remains in the cooler hoses to drain into
the oil pan.
5. Insert the extension adapter hose of a can of the Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:

Wear safety glasses and rubber gloves when spraying
the Transmission Cooler Cleaner.

Spray the Transmission Cooler Cleaner only with ade-
quate ventilation.

Avoid contact with eyes and skin.

Do not breath vapors or spray mist.
6. Hold the hose and can as high as possible and spray the Trans-
mission Cooler Cleaner in a continuous stream into the cooler outlet hose until fluid flows out of the cooler
inlet hose for 5 seconds.Level gauge bolt:
: 5.1N·m (0.52 kg-m, 45 in-lb)
SCIA4896E
SCIA3830E
SCIA3831E

AT-30
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
TCM FunctionACS002LF
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 conditions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SENSORS (or SIGNALS)

TCM

ACTUATORS
PNP switch
Accelerator pedal position sensor
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 switchShift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
Duet-EA control
CAN systemInput clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch
solenoid 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
SCIA5325E