Infiniti M35/M45 Y50. Manual — part 20

AT-3

D

E

F

G

H

I

J

K

L

M

A

B

AT

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 . . . . . . . .. 172

On 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

→

D

2

. . . . . . . . 201

A/T Does Not Shift: D

2

→

D

3

. . . . . . . . 203

A/T Does Not Shift: D

3

→

D

4

. . . . . . . . 205

A/T Does Not Shift: D

4

→

D

5

. . . . . . . . 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-4

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 . . . . . . . . . . . . . . . 281

Oil 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

INDEX FOR DTC

AT-5

D

E

F

G

H

I

J

K

L

M

A

B

AT

INDEX FOR DTC

PFP:00024

Alphabetical Index

NCS001JA

NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to

AT-105

.

*1: These numbers are prescribed by SAE J2012.
*2: For VQ35DE engine.

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

—

P1731

AT-145

ATF PRES SW 1/CIRC

—

P1841

AT-172

ATF PRES SW 3/CIRC

—

P1843

AT-174

ATF PRES SW 5/CIRC

—

P1845

AT-176

ATF PRES SW 6/CIRC

—

P1846

AT-178

A/T INTERLOCK

P1730

P1730

AT-142

A/T TCC S/V FNCTN

P0744

P0744

AT-128

ATF TEMP SEN/CIRC

P0710

P1710

AT-135

CAN COMM CIRCUIT

U1000

U1000

AT-105

D/C SOLENOID/CIRC

P1762

P1762

AT-155

D/C SOLENOID FNCTN

P1764

P1764

AT-157

ENGINE SPEED SIG

P0725 (*2)

P0725

AT-124

FR/B SOLENOID/CIRC

P1757

P1757

AT-151

FR/B SOLENOID FNCT

P1759

P1759

AT-153

HLR/C SOL/CIRC

P1767

P1767

AT-159

HLR/C SOL FNCTN

P1769

P1769

AT-161

I/C SOLENOID/CIRC

P1752

P1752

AT-147

I/C SOLENOID FNCTN

P1754

P1754

AT-149

L/PRESS SOL/CIRC

P0745

P0745

AT-130

LC/B SOLENOID/CIRC

P1772

P1772

AT-163

LC/B SOLENOID FNCT

P1774

P1774

AT-165

MANU MODE SW/CIRC

—

P1815

AT-167

PNP SW/CIRC

P0705

P0705

AT-113

STARTER RELAY/CIRC

—

P0615

AT-108

TCC SOLENOID/CIRC

P0740

P0740

AT-126

TCM

P0700

P0700

AT-112

TP SEN/CIRC A/T

P1705 (*2)

P1705

AT-132

TURBINE REV S/CIRC

P0717

P0717

AT-117

VEH SPD SE/CIR·MTR

—

P1721

AT-140

VEH SPD SEN/CIR AT

P0720

P0720

AT-119

AT-6

INDEX FOR DTC

DTC No. Index

NCS001JB

NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to

AT-105

.

*1: These numbers are prescribed by SAE J2012.
*2: For VQ35DE engine.

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/CIRC

AT-108

P0700

P0700

TCM

AT-112

P0705

P0705

PNP SW/CIRC

AT-113

P0710

P1710

ATF TEMP SEN/CIRC

AT-135

P0717

P0717

TURBINE REV S/CIRC

AT-117

P0720

P0720

VEH SPD SEN/CIR AT

AT-119

P0725 (*2)

P0725

ENGINE SPEED SIG

AT-124

P0740

P0740

TCC SOLENOID/CIRC

AT-126

P0744

P0744

A/T TCC S/V FNCTN

AT-128

P0745

P0745

L/PRESS SOL/CIRC

AT-130

P1705 (*2)

P1705

TP SEN/CIRC A/T

AT-132

—

P1721

VEH SPD SE/CIR·MTR

AT-140

P1730

P1730

A/T INTERLOCK

AT-142

—

P1731

A/T 1ST E/BRAKING

AT-145

P1752

P1752

I/C SOLENOID/CIRC

AT-147

P1754

P1754

I/C SOLENOID FNCTN

AT-149

P1757

P1757

FR/B SOLENOID/CIRC

AT-151

P1759 P1759

FR/B

SOLENOID

FNCT

AT-153

P1762

P1762

D/C SOLENOID/CIRC

AT-155

P1764

P1764 D/C

SOLENOID

FNCTN

AT-157

P1767

P1767

HLR/C SOL/CIRC

AT-159

P1769 P1769

HLR/C

SOL

FNCTN

AT-161

P1772

P1772

LC/B SOLENOID/CIRC

AT-163

P1774 P1774

LC/B

SOLENOID

FNCT

AT-165

—

P1815

MANU MODE SW/CIRC

AT-167

—

P1841

ATF PRES SW 1/CIRC

AT-172

—

P1843

ATF PRES SW 3/CIRC

AT-174

—

P1845

ATF PRES SW 5/CIRC

AT-176

—

P1846

ATF PRES SW 6/CIRC

AT-178

U1000

U1000

CAN COMM CIRCUIT

AT-105