diagram INFINITI M35 2007 Factory User Guide

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Revision: 2007 April2007 M35/M45 DTC P1762 DIRECT CLUTCH SOLENOID VALVE . 155
Description ........................................................... 155
CONSULT-II Reference Value .............................. 155
On Board Diagnosis Logic ................................... 155
Possible Cause .................................................... 155
DTC Confirmation Procedure ............................... 155
Diagnostic Procedure ........................................... 156
DTC P1764 DIRECT CLUTCH SOLENOID VALVE
FUNCTION .............................................................. 157
Description ........................................................... 157
CONSULT-II Reference Value .............................. 157
On Board Diagnosis Logic ................................... 157
Possible Cause .................................................... 157
DTC Confirmation Procedure ............................... 157
Diagnostic Procedure ........................................... 158
DTC P1767 HIGH AND LOW REVERSE CLUTCH
SOLENOID VALVE ................................................. 159
Description ........................................................... 159
CONSULT-II Reference Value .............................. 159
On Board Diagnosis Logic ................................... 159
Possible Cause .................................................... 159
DTC Confirmation Procedure ............................... 159
Diagnostic Procedure ........................................... 160
DTC P1769 HIGH AND LOW REVERSE CLUTCH
SOLENOID VALVE FUNCTION ............................. 161
Description ........................................................... 161
CONSULT-II Reference Value .............................. 161
On Board Diagnosis Logic ................................... 161
Possible Cause .................................................... 161
DTC Confirmation Procedure ............................... 161
Diagnostic Procedure ........................................... 162
DTC P1772 LOW COAST BRAKE SOLENOID
VALVE ..................................................................... 163
Description ........................................................... 163
CONSULT-II Reference Value .............................. 163
On Board Diagnosis Logic ................................... 163
Possible Cause .................................................... 163
DTC Confirmation Procedure ............................... 163
Diagnostic Procedure ........................................... 164
DTC P1774 LOW COAST BRAKE SOLENOID
VALVE FUNCTION ................................................. 165
Description ........................................................... 165
CONSULT-II Reference Value .............................. 165
On Board Diagnosis Logic ................................... 165
Possible Cause .................................................... 165
DTC Confirmation Procedure ............................... 165
Diagnostic Procedure ........................................... 166
DTC P1815 MANUAL MODE SWITCH .................. 167
Description ........................................................... 167
CONSULT-II Reference Value .............................. 167
On Board Diagnosis Logic ................................... 167
Possible Cause .................................................... 167
DTC Confirmation Procedure ............................... 167
Wiring Diagram — AT — MMSW ......................... 168
Diagnostic Procedure ........................................... 170
Component Inspection ......................................... 171
DTC P1841 ATF PRESSURE SWITCH 1 ............... 172
Description ........................................................... 172
CONSULT-II Reference Value .............................. 172On Board Diagnosis Logic ....................................172
Possible Cause .....................................................172
DTC Confirmation Procedure ...............................172
Diagnostic Procedure ...........................................173
DTC P1843 ATF PRESSURE SWITCH 3 ...............174
Description ............................................................174
CONSULT-II Reference Value ..............................174
On Board Diagnosis Logic ....................................174
Possible Cause .....................................................174
DTC Confirmation Procedure ...............................174
Diagnostic Procedure ...........................................175
DTC P1845 ATF PRESSURE SWITCH 5 ...............176
Description ............................................................176
CONSULT-II Reference Value ..............................176
On Board Diagnosis Logic ....................................176
Possible Cause .....................................................176
DTC Confirmation Procedure ...............................176
Diagnostic Procedure ...........................................177
DTC P1846 ATF PRESSURE SWITCH 6 ...............178
Description ............................................................178
CONSULT-II Reference Value ..............................178
On Board Diagnosis Logic ....................................178
Possible Cause .....................................................178
DTC Confirmation Procedure ...............................178
Diagnostic Procedure ...........................................179
MAIN POWER SUPPLY AND GROUND CIRCUIT .180
Wiring Diagram — AT — MAIN ............................180
Diagnostic Procedure ...........................................181
CLOSED THROTTLE POSITION AND WIDE OPEN
THROTTLE POSITION CIRCUIT ............................184
CONSULT-II Reference Value ..............................184
Diagnostic Procedure ...........................................184
BRAKE SIGNAL CIRCUIT ......................................185
CONSULT-II Reference Value ..............................185
Diagnostic Procedure ...........................................185
A/T INDICATOR CIRCUIT .......................................186
Description ............................................................186
CONSULT-II Reference Value ..............................186
Diagnostic Procedure ...........................................186
TROUBLE DIAGNOSIS FOR SYMPTOMS ............187
Wiring Diagram — AT — NONDTC ......................187
A/T CHECK Indicator Lamp Does Not Come On . 190
Engine Cannot Be Started in “P” or “N” Position ..190
In “P” Position, Vehicle Moves When Pushed ......191
In “N” Position, Vehicle Moves ..............................192
Large Shock (“N” to “D” Position) .........................193
Vehicle Does Not Creep Backward in “R” Position .195
Vehicle Does Not Creep Forward in “D” Position . 197
Vehicle Cannot Be Started from D
1 ......................199
A/T Does Not Shift: D
1 → D2 ................................201
A/T Does Not Shift: D
2 → D3 ................................203
A/T Does Not Shift: D
3 → D4 ................................205
A/T Does Not Shift: D
4 → D5 ................................207
A/T Does Not Lock-up ..........................................209
A/T Does Not Hold Lock-up Condition ..................210
Lock-up Is Not Released ......................................212
Engine Speed Does Not Return to Idle ................212
Cannot Be Changed to Manual Mode ..................213
A/T Does Not Shift: 5th Gear → 4th Gear ............214

AT-4Revision: 2007 April2007 M35/M45 A/T Does Not Shift: 4th Gear → 3rd Gear ............215
A/T Does Not Shift: 3rd Gear → 2nd Gear ...........217
A/T Does Not Shift: 2nd Gear → 1st Gear ............218
Vehicle Does Not Decelerate by Engine Brake ....220
SHIFT CONTROL SYSTEM ....................................222
Control Device Removal and Installation ..............222
Control Rod Removal and Installation ..................226
Adjustment of A/T Position ...................................227
Checking of A/T Position ......................................228
A/T SHIFT LOCK SYSTEM .....................................229
Description ............................................................229
Shift Lock System Electrical Parts Location .........229
Wiring Diagram — AT — SHIFT ...........................230
Diagnostic Procedure ...........................................232
ON-VEHICLE SERVICE ..........................................236
Control Valve With TCM and A/T Fluid Temperature
Sensor 2 ...............................................................236
Parking Components (2WD Models Only) ............250
Rear Oil Seal (VQ35DE Models Only) ..................262
Revolution Sensor Components (2WD Models
Only) .....................................................................263
AIR BREATHER HOSE ...........................................272
Removal and Installation ......................................272
TRANSMISSION ASSEMBLY ................................274
Removal and Installation (2WD Models) ..............274
Removal and Installation (AWD Models) ..............278
OVERHAUL .............................................................281
Components .........................................................281Oil Channel ...........................................................295
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................298
DISASSEMBLY .......................................................301
Disassembly ..........................................................301
REPAIR FOR COMPONENT PARTS ......................322
Oil Pump ...............................................................322
Front Sun Gear, 3rd One-Way Clutch ...................325
Front Carrier, Input Clutch, Rear Internal Gear .....327
Mid Sun Gear, Rear Sun Gear, High and Low
Reverse Clutch Hub ..............................................333
High and Low Reverse Clutch ..............................339
Direct Clutch .........................................................341
ASSEMBLY .............................................................344
Assembly (1) .........................................................344
Adjustment ............................................................360
Assembly (2) .........................................................362
SERVICE DATA AND SPECIFICATIONS (SDS) ....370
General Specifications ..........................................370
Vehicle Speed at Which Gear Shifting Occurs ......370
Vehicle Speed at Which Lock-Up Occurs/Releases .371
Stall Speed ............................................................371
Line Pressure ........................................................371
A/T Fluid Temperature Sensor ..............................371
Turbine Revolution Sensor ....................................372
Vehicle Speed Sensor A/T (Revolution Sensor) ...372
Reverse Brake ......................................................372
Total End Play .......................................................372

A/T CONTROL SYSTEM
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Revision: 2007 April2007 M35/M45
TCM FunctionNCS001JP
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 A/T senses vehicle operating conditions through various sensors or signals. It always controls the opti-
mum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SENSORS (or SIGNAL)

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 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
Back-up lamp relay
Sta r te r re l a y
SCIA5325E

A/T CONTROL SYSTEM
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Revision: 2007 April2007 M35/M45
SHIFT CHANGE
The clutch is controlled with the optimum timing and oil pressure by the engine speed, engine torque informa-
tion, etc.
Shift Change System Diagram
*1: Full phase real-time feedback control monitors movement of gear ratio at gear change, and controls oil
pressure at real-time to achieve the best gear ratio.
BLIPPING CONTROL
This system makes transmission clutch engage readily by controlling (synchronizing) engine revolution
according to the (calculation of) engine revolution after shifting down.

“BLIPPING CONTROL” functions.
–When downshifting by accelerator pedal depression at “D” position.
–When downshifting under the manual mode.

TCM selects “BLIPPING CONTROL” or “NORMAL SHIFT CONTROL” according to the gear position, the
select lever position, the engine torque and the speed when accelerating by pedal depression.

Revolution control demand signal is transmitted from TCM to ECM under “BLIPPING CONTROL”.

TCM synchronizes engine revolution according to the revolution control demand signal.
PCIA0013E

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A/T CONTROL SYSTEM
Revision: 2007 April2007 M35/M45
Shift Change System Diagram
ASC (ADOPTIVE SHIFT CONTROL)
ASC automatically shifts or hold at the 3rd or 4th gear on certain roads (up/down slope and curve) and driving
condition.
When Driving on an Up/Down Slope

ASC judges up/down slope according to the angle of accelerator pedal and vehicle speed. Holding gear at
the 3rd or 4th on an up-slope prevents shift hunting and controls the vehicle to gain maximum driving
force. On a down-slope, automatic shift-down to the 3rd or 4th gear controls to gain maximum engine
brake.
When Driving on a Curve

TCM receives side G sensor signal from ABS actuator and electric unit (control unit). Holding gear at the
3rd or 4th based on the signal prevents shift-up and kick-down and controls to drive smoothly.
SCIA6483E
SCIA6469E

A/T CONTROL SYSTEM
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Revision: 2007 April2007 M35/M45
Lock-up ControlNCS001JU
The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to
increase power transmission efficiency.
The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid valve,
which is controlled by a signal from TCM, and the torque converter clutch control valve engages or releases
the torque converter clutch piston.
Lock-up operation condition table
TORQUE CONVERTER CLUTCH CONTROL VALVE CONTROL
Lock-up Control System Diagram
Lock-up Released

In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by the
torque converter clutch solenoid and the lock-up apply pressure is drained.
In this way, the torque converter clutch piston is not coupled.
Lock-up Applied

In the lock-up applied state, the torque converter clutch control valve is set into the locked state by the
torque converter clutch solenoid and lock-up apply pressure is generated.
In this way, the torque converter clutch piston is pressed and coupled.
SMOOTH LOCK-UP CONTROL
When shifting from the lock-up released state to the lock-up applied state, the current output to the torque con-
verter clutch solenoid is controlled with the TCM. In this way, when shifting to the lock-up applied state, the
torque converter clutch is temporarily set to the half-clutched state to reduce the shock.
Half-clutched State

The current output from the TCM to the torque converter clutch solenoid is varied to steadily increase the
torque converter clutch solenoid pressure.
In this way, the lock-up apply pressure gradually rises and while the torque converter clutch piston is put
into half-clutched status, the torque converter clutch piston operating pressure is increased and the cou-
pling is completed smoothly.
Slip Lock-up Control

In the slip region, the torque converter clutch solenoid current is controlled with the TCM to put it into the
half-clutched state. This absorbs the engine torque fluctuation and lock-up operates from low speed.
This raises the fuel efficiency for 3rd, 4th and 5th gears at both low speed and when the accelerator has a
low degree of opening.
Selector lever “D” position “M” position
Gear position 5 4 3 5 4
Lock-up×––××
Slip lock-up×××––
PCIA0014E

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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Circuit DiagramNCS001K6
TCWT0341E

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DTC U1000 CAN COMMUNICATION LINE
Revision: 2007 April2007 M35/M45
Wiring Diagram — AT — CANNCS001KN
TCWT0342E

DTC P0615 START SIGNAL CIRCUIT
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Revision: 2007 April2007 M35/M45
Wiring Diagram — AT — STSIGNCS001KU
TCWT0343E

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DTC P0705 PARK/NEUTRAL POSITION SWITCH
Revision: 2007 April2007 M35/M45
Wiring Diagram — AT — PNP/SWNCS001L6
TCWT0344E