Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti M45 Y34 2003-2004 Approved M45-Y34-2004 at
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AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
A
AUTOMATIC TRANSMISSION
SECTION AT B
AT
D
E
CONTENTS
INDEX FOR DTC ....................................................... 5. Fail-Safe ................................................................ 43
. F
Alphabetical Index ................................................... 5
. How To Perform Trouble Diagnosis For Quick and
DTC No. Index ........................................................ 6
. Accurate Repair ..................................................... 45
.
PRECAUTIONS ......................................................... 7. A/T Electrical Parts Location ................................. 50 . G
Precautions for Supplemental Restraint System Circuit Diagram ...................................................... 51
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Inspections Before Trouble Diagnosis ................... 52 .
SIONER" ................................................................. 7
. Check Before Engine is Started ............................. 56 .
H
Precautions for On Board Diagnostic (OBD) System Check at Idle .......................................................... 56
.
of A/T and Engine ................................................... 7
. Cruise Test - Part 1 ................................................ 58
.
Precautions for TCM, A/T Assembly and Control Cruise Test - Part 2 ................................................ 60
.
Valve Assembly Replacement ................................. 8 . Cruise Test - Part 3 ................................................ 60
. I
Precautions ............................................................. 9
. Vehicle Speed When Shifting Gears ..................... 62 .
Service Notice or Precautions ................................11 . Vehicle Speed When Performing and Releasing
Wiring Diagrams and Trouble Diagnosis ................11 . Complete Lock-Up ................................................. 62 . J
PREPARATION ........................................................ 12. Vehicle Speed When Performing and Releasing
Special Service Tools ............................................ 12. Slip Lock-Up .......................................................... 62
.
Commercial Service Tools ..................................... 13 . Symptom Chart ...................................................... 63.
K
A/T FLUID ................................................................ 14
. TCM Input/Output Signal Reference Values .......... 86 .
Changing A/T Fluid ............................................... 14. CONSULT-II ........................................................... 89
.
Checking A/T Fluid ................................................ 14
. Diagnostic Procedure Without CONSULT-II ........ 101 .
A/T Fluid Cooler Cleaning ..................................... 16 . DTC U1000 CAN COMMUNICATION LINE ........... 103 . L
A/T CONTROL SYSTEM ......................................... 19 . Description ........................................................... 103
.
Cross-Sectional View ............................................ 19 . On Board Diagnosis Logic ................................... 103 .
Shift Mechanism .................................................... 20
. Possible Cause .................................................... 103. M
TCM Function ........................................................ 31
. DTC Confirmation Procedure .............................. 103 .
CAN Communication ............................................. 32 . Wiring Diagram -- AT -- CAN ............................. 104 .
Input/Output Signal of TCM ................................... 32 . Diagnostic Procedure .......................................... 105 .
Line Pressure Control ........................................... 33 . DTC P0615 START SIGNAL CIRCUIT .................. 106 .
Shift Control .......................................................... 34
. Description ........................................................... 106
.
Lock-Up Control .................................................... 35
. CONSULT-II Reference Value ............................. 106 .
Engine Brake Control ............................................ 36 . On Board Diagnosis Logic ................................... 106 .
Control Valve ......................................................... 37
. Possible Cause .................................................... 106.
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 39 . DTC Confirmation Procedure .............................. 106 .
Introduction ........................................................... 39
. Wiring Diagram -- AT -- STSIG ......................... 107 .
OBD-II Function for A/T System ............................ 39 . Diagnostic Procedure .......................................... 108 .
One or Two Trip Detection Logic of OBD-II ........... 39 . DTC P0705 PARK/NEUTRAL POSITION SWITCH. 110
OBD-II Diagnostic Trouble Code (DTC) ................ 39 . Description ........................................................... 110
.
Malfunction Indicator Lamp (MIL) .......................... 42 . CONSULT-II Reference Value ............................. 110 .
TROUBLE DIAGNOSIS ........................................... 43 . On Board Diagnosis Logic ................................... 110 .
DTC Inspection Priority Chart ............................... 43 . Possible Cause .................................................... 110.
Revision: 2004 October AT-1 2004 M45
DTC Confirmation Procedure .............................. 110 . Description ........................................................... 146
.
Wiring Diagram -- AT -- PNP/SW ...................... 112 . On Board Diagnosis Logic ................................... 146 .
Diagnostic Procedure .......................................... 113 . Possible Cause .................................................... 146 .
Component Inspection ......................................... 115 . DTC Confirmation Procedure ............................... 146 .
DTC P0720 VEHICLE SPEED SENSOR A/T (REV- Diagnostic Procedure ........................................... 147 .
OLUTION SENSOR) .............................................. 116 . DTC P1703 TRANSMISSION CONTROL MODULE
Description ........................................................... 116
. (ROM) ..................................................................... 148
.
CONSULT-II Reference Value ............................. 116 . Description ........................................................... 148
.
On Board Diagnosis Logic ................................... 116 . On Board Diagnosis Logic ................................... 148 .
Possible Cause .................................................... 116 . Possible Cause .................................................... 148 .
DTC Confirmation Procedure .............................. 116 . DTC Confirmation Procedure ............................... 148 .
Wiring Diagram -- AT -- VSSA/T ........................ 117 . Diagnostic Procedure ........................................... 149 .
Diagnostic Procedure .......................................... 118 . DTC P1704 TRANSMISSION CONTROL MODULE
DTC P0725 ENGINE SPEED SIGNAL .................. 121 . (EEPROM) .............................................................. 150
.
Description ........................................................... 121
. Description ........................................................... 150
.
CONSULT-II Reference Value ............................. 121 . On Board Diagnosis Logic ................................... 150 .
On Board Diagnosis Logic ................................... 121 . Possible Cause .................................................... 150 .
Possible Cause .................................................... 121 . DTC Confirmation Procedure ............................... 150 .
DTC Confirmation Procedure .............................. 121 . Diagnostic Procedure ........................................... 151 .
Diagnostic Procedure .......................................... 122 . DTC P1705 THROTTLE POSITION SENSOR ....... 152 .
DTC P0740 TORQUE CONVERTER CLUTCH Description ........................................................... 152
.
SOLENOID VALVE ................................................ 123 . CONSULT-II Reference Value .............................. 152 .
Description ........................................................... 123
. On Board Diagnosis Logic ................................... 152 .
CONSULT-II Reference Value ............................. 123 . Possible Cause .................................................... 152 .
On Board Diagnosis Logic ................................... 123 . DTC Confirmation Procedure ............................... 152 .
Possible Cause .................................................... 123 . Diagnostic Procedure ........................................... 153 .
DTC Confirmation Procedure .............................. 123 . DTC P1710 A/T FLUID TEMPERATURE SENSOR
Wiring Diagram -- AT -- TCV ............................. 124 . CIRCUIT ................................................................. 154
.
Diagnostic Procedure .......................................... 125 . Description ........................................................... 154
.
Component Inspection ......................................... 127 . CONSULT-II Reference Value .............................. 154 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP). 128 On Board Diagnosis Logic ................................... 154 .
Description ........................................................... 128
. Possible Cause .................................................... 154 .
CONSULT-II Reference Value ............................. 128 . DTC Confirmation Procedure ............................... 154 .
On Board Diagnosis Logic ................................... 128 . Wiring Diagram -- AT -- FTS .............................. 155 .
Possible Cause .................................................... 128 . Diagnostic Procedure ........................................... 156 .
DTC Confirmation Procedure .............................. 128 . Component Inspection ......................................... 159 .
Wiring Diagram -- AT -- TCCSIG ....................... 130 . DTC P1716 TURBINE REVOLUTION SENSOR ... 160 .
Diagnostic Procedure .......................................... 131 . Description ........................................................... 160
.
Component Inspection ......................................... 133 . CONSULT-II Reference Value .............................. 160 .
DTC P0745 LINE PRESSURE SOLENOID VALVE. 134 On Board Diagnosis Logic ................................... 160 .
Description ........................................................... 134
. Possible Cause .................................................... 160 .
CONSULT-II Reference Value ............................. 134 . DTC Confirmation Procedure ............................... 160 .
On Board Diagnosis Logic ................................... 134 . Wiring Diagram -- AT -- TRSA/T ........................ 161 .
Possible Cause .................................................... 134 . Diagnostic Procedure ........................................... 162 .
DTC Confirmation Procedure .............................. 134 . DTC P1721 VEHICLE SPEED SENSOR MTR ...... 165 .
Wiring Diagram -- AT -- LPSV ........................... 135 . Description ........................................................... 165
.
Diagnostic Procedure .......................................... 136 . CONSULT-II Reference Value .............................. 165 .
Component Inspection ......................................... 138 . On Board Diagnosis Logic ................................... 165 .
DTC P1701 TRANSMISSION CONTROL MODULE Possible Cause .................................................... 165 .
(POWER SUPPLY) ................................................. 140 . DTC Confirmation Procedure ............................... 165 .
Description ........................................................... 140
. Diagnostic Procedure ........................................... 166 .
On Board Diagnosis Logic ................................... 140 . DTC P1730 A/T INTERLOCK ................................ 167 .
Possible Cause .................................................... 140 . Description ........................................................... 167
.
DTC Confirmation Procedure .............................. 140 . On Board Diagnosis Logic ................................... 167 .
Wiring Diagram -- AT -- POWER ....................... 141 . Possible Cause .................................................... 167 .
Diagnostic Procedure .......................................... 144 . DTC Confirmation Procedure ............................... 167 .
Component Inspection ......................................... 145 . Wiring Diagram -- AT -- I/LOCK ......................... 168 .
DTC P1702 TRANSMISSION CONTROL MODULE Judgement of A/T Interlock .................................. 172 .
(RAM) ..................................................................... 146
. Diagnostic Procedure ........................................... 172 .
Revision: 2004 October AT-2 2004 M45
DTC P1731 A/T 1ST ENGINE BRAKING .............. 174 . DTC Confirmation Procedure .............................. 205 .
Description .......................................................... 174
. Wiring Diagram -- AT -- D/CF ............................ 206 . A
CONSULT-II Reference Value ............................. 174 . Diagnostic Procedure .......................................... 207 .
On Board Diagnosis Logic .................................. 174 . DTC P1767 HIGH AND LOW REVERSE CLUTCH
Possible Cause ................................................... 174
. SOLENOID VALVE ................................................ 209 . B
DTC Confirmation Procedure .............................. 174 . Description ........................................................... 209
.
Wiring Diagram -- AT -- E/BRE ......................... 175 . CONSULT-II Reference Value ............................. 209 .
Diagnostic Procedure .......................................... 176 . On Board Diagnosis Logic ................................... 209 .
DTC P1752 INPUT CLUTCH SOLENOID VALVE . 179 Possible Cause .................................................... 209 . AT
Description .......................................................... 179
. DTC Confirmation Procedure .............................. 209 .
CONSULT-II Reference Value ............................. 179 . Wiring Diagram -- AT -- HLR/C ......................... 210 .
On Board Diagnosis Logic .................................. 179 . Diagnostic Procedure .......................................... 211 . D
Possible Cause ................................................... 179
. Component Inspection ......................................... 213 .
DTC Confirmation Procedure .............................. 179 . DTC P1769 HIGH AND LOW REVERSE CLUTCH
Wiring Diagram -- AT -- I/C ............................... 180 . SOLENOID VALVE FUNCTION ............................. 215 . E
Diagnostic Procedure .......................................... 181 . Description ........................................................... 215
.
Component Inspection ........................................ 183 . CONSULT-II Reference Value ............................. 215 .
DTC P1754 INPUT CLUTCH SOLENOID VALVE On Board Diagnosis Logic ................................... 215 .
FUNCTION ............................................................. 185
. Possible Cause .................................................... 215 . F
Description .......................................................... 185
. DTC Confirmation Procedure .............................. 215 .
CONSULT-II Reference Value ............................. 185 . Wiring Diagram -- AT -- HLR/CF ....................... 216 .
On Board Diagnosis Logic .................................. 185 . Diagnostic Procedure .......................................... 217 . G
Possible Cause ................................................... 185
. DTC P1772 LOW COAST BRAKE SOLENOID
DTC Confirmation Procedure .............................. 185 . VALVE .................................................................... 220
.
Wiring Diagram -- AT -- I/CF ............................. 186 . Description ........................................................... 220
. H
Diagnostic Procedure .......................................... 187 . CONSULT-II Reference Value ............................. 220 .
DTC P1757 FRONT BRAKE SOLENOID VALVE . 189 On Board Diagnosis Logic ................................... 220 .
Description .......................................................... 189
. Possible Cause .................................................... 220 .
I
CONSULT-II Reference Value ............................. 189 . DTC Confirmation Procedure .............................. 220 .
On Board Diagnosis Logic .................................. 189 . Wiring Diagram -- AT -- LC/B ............................ 221 .
Possible Cause ................................................... 189
. Diagnostic Procedure .......................................... 222 .
DTC Confirmation Procedure .............................. 189 . Component Inspection ......................................... 224 . J
Wiring Diagram -- AT -- FR/B ............................ 190 . DTC P1774 LOW COAST BRAKE SOLENOID
Diagnostic Procedure .......................................... 191 . VALVE FUNCTION ................................................. 226 .
Component Inspection ........................................ 193 . Description ........................................................... 226
. K
DTC P1759 FRONT BRAKE SOLENOID VALVE CONSULT-II Reference Value ............................. 226 .
FUNCTION ............................................................. 194
. On Board Diagnosis Logic ................................... 226 .
Description .......................................................... 194
. Possible Cause .................................................... 226 . L
CONSULT-II Reference Value ............................. 194 . DTC Confirmation Procedure .............................. 226 .
On Board Diagnosis Logic .................................. 194 . Wiring Diagram -- AT -- LC/BF .......................... 227 .
Possible Cause ................................................... 194
. Diagnostic Procedure .......................................... 228 .
DTC Confirmation Procedure .............................. 194 . DTC P1815 MANUAL MODE SWITCH ................. 230 . M
Wiring Diagram -- AT -- FR/BF .......................... 195 . Description ........................................................... 230
.
Diagnostic Procedure .......................................... 196 . CONSULT-II Reference Value in Data Monitor Mode
DTC P1762 DIRECT CLUTCH SOLENOID VALVE 199 . . 230
Description .......................................................... 199
. On Board Diagnosis Logic ................................... 230 .
CONSULT-II Reference Value ............................. 199 . Possible Cause .................................................... 230 .
On Board Diagnosis Logic .................................. 199 . DTC Confirmation Procedure .............................. 230 .
Possible Cause ................................................... 199
. Wiring Diagram -- AT -- MMSW ........................ 231 .
DTC Confirmation Procedure .............................. 199 . Diagnostic Procedure .......................................... 232 .
Wiring Diagram -- AT -- D/C .............................. 200 . Component Inspection ......................................... 233 .
Diagnostic Procedure .......................................... 201 . A/T Position Indicator .......................................... 233 .
Component Inspection ........................................ 203 . DTC P1841 ATF PRESSURE SWITCH 1 .............. 234 .
DTC P1764 DIRECT CLUTCH SOLENOID VALVE Description ........................................................... 234
.
FUNCTION ............................................................. 205
. CONSULT-II Reference Value ............................. 234 .
Description .......................................................... 205
. On Board Diagnosis Logic ................................... 234 .
CONSULT-II Reference Value ............................. 205 . Possible Cause .................................................... 234 .
On Board Diagnosis Logic .................................. 205 . DTC Confirmation Procedure .............................. 234 .
Possible Cause ................................................... 205
.
Revision: 2004 October AT-3 2004 M45
Wiring Diagram -- AT -- FPSW1 ........................ 235 . A/T Does Not Shift: 2nd Gear 1st Gear ........... 300 .
Diagnostic Procedure .......................................... 236 . Vehicle Does Not Decelerate by Engine Brake .... 302 .
DTC P1843 ATF PRESSURE SWITCH 3 .............. 238 . SHIFT CONTROL SYSTEM ................................... 304 .
Description ........................................................... 238
. Control Device Removal and Installation ............. 304 .
CONSULT-II Reference Value ............................. 238 . Adjustment of A/T Position ................................... 305 .
On Board Diagnosis Logic ................................... 238 . Checking of A/T Position ...................................... 305 .
Possible Cause .................................................... 238 . A/T SHIFT LOCK SYSTEM .................................... 306 .
DTC Confirmation Procedure .............................. 238 . Description ........................................................... 306
.
Wiring Diagram -- AT -- FPSW3 ........................ 239 . Shift Lock System Electrical Parts Location ......... 306 .
Diagnostic Procedure .......................................... 240 . Wiring Diagram -- AT -- SHIFT .......................... 307 .
DTC P1845 ATF PRESSURE SWITCH 5 .............. 242 . Shift Lock Control Unit Reference Values ............ 309 .
Description ........................................................... 242
. Component Inspection ......................................... 310 .
CONSULT-II Reference Value ............................. 242 . ON-VEHICLE SERVICE ......................................... 312 .
On Board Diagnosis Logic ................................... 242 . Control Valve Assembly ....................................... 312 .
Possible Cause .................................................... 242 . Revolution Sensor ................................................ 319.
DTC Confirmation Procedure .............................. 242 . Parking Components ........................................... 325 .
Wiring Diagram -- AT -- FPSW5 ........................ 243 . AIR BREATHER HOSE .......................................... 330 .
Diagnostic Procedure .......................................... 244 . Removal and Installation ...................................... 330 .
DTC P1846 ATF PRESSURE SWITCH 6 .............. 246 . TRANSMISSION ASSEMBLY ................................ 331 .
Description ........................................................... 246
. Removal and Installation ...................................... 331 .
CONSULT-II Reference Value ............................. 246 . OVERHAUL ............................................................ 334
.
On Board Diagnosis Logic ................................... 246 . Components ......................................................... 334
.
Possible Cause .................................................... 246 . Oil Channel .......................................................... 340
.
DTC Confirmation Procedure .............................. 246 . Locations of Adjusting Shims, Needle Bearings,
Wiring Diagram -- AT -- FPSW6 ........................ 247 . Thrust Washers and Snap Rings ......................... 341 .
Diagnostic Procedure .......................................... 248 . DISASSEMBLY ...................................................... 342 .
PARK/NEUTRAL POSITION, MANUAL MODE, Disassembly ......................................................... 342
.
BRAKE AND THROTTLE POSITION SWITCH CIR- REPAIR FOR COMPONENT PARTS ..................... 357 .
CUIT ....................................................................... 250
. Oil Pump .............................................................. 357
.
CONSULT-II Reference Value ............................. 250 . Front Sun Gear, 3rd One-Way Clutch .................. 360 .
Diagnostic Procedure .......................................... 251 . Front Carrier, Input Clutch, Rear Internal Gear .... 362 .
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 254 . Mid Sun Gear, Rear Sun Gear, High and Low
Wiring Diagram -- AT -- NONDTC ..................... 254 . Reverse Clutch Hub ............................................. 367 .
A/T CHECK Indicator Lamp Does Not Come On . 256 High and Low Reverse Clutch ............................. 372 .
Engine Cannot Be Started In "P" or "N" Position . 258 Direct Clutch ........................................................ 374
.
In "P" Position, Vehicle Moves When Pushed ..... 259 . ASSEMBLY ............................................................ 376
.
In "N" Position, Vehicle Moves ............................. 260 . Assembly (1) ........................................................ 376
.
Large Shock ("N" to "D" Position) ........................ 262 . Adjustment ........................................................... 388
.
Vehicle Does Not Creep Backward in "R" Position. 265 Assembly (2) ........................................................ 390
.
Vehicle Does Not Creep Forward in "D" Position . 268 SERVICE DATA AND SPECIFICATIONS (SDS) ... 397 .
Vehicle Cannot Be Started From D1 .................... 271 . General Specifications ......................................... 397 .
A/T Does Not Shift: D1 D2 ............................... 274 . Vehicle Speed When Shifting Gears .................... 397 .
A/T Does Not Shift: D2 D3 ............................... 277 . Vehicle Speed When Performing and Releasing
A/T Does Not Shift: D3 D4 ............................... 280 . Complete Lock-Up ............................................... 397 .
A/T Does Not Shift: D4 D5 ............................... 283 . Vehicle Speed When Performing and Releasing
A/T Does Not Perform Lock-up ........................... 286 . Slip Lock-Up ......................................................... 397
.
A/T Does Not Hold Lock-up Condition ................. 288 . Stall Speed ........................................................... 397
.
Lock-up is Not Released ..................................... 290 . Line Pressure ....................................................... 398
.
Engine Speed Does Not Return to Idle ............... 291 . Solenoid Valves ................................................... 398
.
Cannot Be Changed to Manual Mode ................. 293 . A/T Fluid Temperature Sensor ............................. 398 .
A/T Does Not Shift: 5th Gear 4th Gear ........... 294 . Turbine Revolution Sensor ................................... 398 .
A/T Does Not Shift: 4th Gear 3rd Gear ........... 296 . Revolution Sensor ................................................ 398.
A/T Does Not Shift: 3rd Gear 2nd Gear .......... 298 . Reverse Brake ..................................................... 398
.
Total End Play ...................................................... 398
.
Revision: 2004 October AT-4 2004 M45
INDEX FOR DTC
INDEX FOR DTC PFP:00024
A
Alphabetical Index ACS0018W
NOTE:
If DTC "U1000" is displayed with other DTC, first perform the trouble diagnosis for "DTC U1000 CAN B
COMMUNICATION LINE". Refer to AT-103 .
DTC
Items OBD-II Except OBD-II AT
Reference page
(CONSULT-II screen terms)
CONSULT-II CONSULT-II
GST*1 only "A/T"
A/T 1ST E/BRAKING -- P1731 AT-174 D
ATF PRES SW 1/CIRC -- P1841 AT-234
ATF PRES SW 3/CIRC -- P1843 AT-238
E
ATF PRES SW 5/CIRC -- P1845 AT-242
ATF PRES SW 6/CIRC -- P1846 AT-246
A/T INTERLOCK P1730 P1730 AT-167 F
A/T TCC S/V FNCTN P0744 P0744 AT-128
ATF TEMP SEN/CIRC P0710 P1710 AT-154
G
CAN COMM CIRCUIT U1000 U1000 AT-103
D/C SOLENOID/CIRC P1762 P1762 AT-199
D/C SOLENOID FNCTN P1764 P1764 AT-205 H
ENGINE SPEED SIG -- P0725 AT-121
FR/B SOLENOID/CIRC P1757 P1757 AT-189
I
FR/B SOLENOID FNCT P1759 P1759 AT-194
HLR/C SOL/CIRC P1767 P1767 AT-209
HLR/C SOL FNCTN P1769 P1769 AT-215 J
I/C SOLENOID/CIRC P1752 P1752 AT-179
I/C SOLENOID FNCTN P1754 P1754 AT-185
L/PRESS SOL/CIRC P0745 P0745 AT-134 K
LC/B SOLENOID/CIRC P1772 P1772 AT-220
LC/B SOLENOID FNCT P1774 P1774 AT-226
L
MANU MODE SW/CIR -- P1815 AT-230
PNP SW/CIRC P0705 P0705 AT-110
STARTER RELAY/CIRC -- P0615 AT-106 M
TCC SOLENOID/CIRC P0740 P0740 AT-123
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