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AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
A
B
SECTION
AUTOMATIC TRANSMISSION AT
D
E
CONTENTS
INDEX FOR DTC ....................................................... 5 . How To Perform Trouble Diagnosis For Quick and F
Alphabetical Index ................................................... 5
. Accurate Repair ..................................................... 45
.
DTC No. Index ........................................................ 6
. A/T Electrical Parts Location ................................. 50 .
PRECAUTIONS ......................................................... 7 . Circuit Diagram ...................................................... 51
. G
Precautions for Supplemental Restraint System Inspections Before Trouble Diagnosis ................... 52 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Check Before Engine is Started ............................. 56 .
SIONER" ................................................................. 7
. Check at Idle .......................................................... 56
.
H
Precautions for On Board Diagnostic (OBD) System Cruise Test - Part 1 ................................................ 57
.
of A/T and Engine ................................................... 7. Cruise Test - Part 2 ................................................ 59
.
Precautions for TCM, A/T Assembly and Control Cruise Test - Part 3 ................................................ 60
.
Valve Assembly Replacement ................................. 8 . Vehicle Speed When Shifting Gears ..................... 62 . I
Precautions ............................................................. 9
. Vehicle Speed When Performing and Releasing
Service Notice or Precautions ............................... 10 . Complete Lock-up ................................................. 62 .
Wiring Diagrams and Trouble Diagnosis ............... 10 . Vehicle Speed When Performing and Releasing J
PREPARATION .........................................................11 . Slip Lock-up ........................................................... 62
.
Special Service Tools .............................................11 . Symptom Chart ...................................................... 63
.
Commercial Service Tools ..................................... 12 . TCM Input/Output Signal Reference Values .......... 86 .
K
A/T FLUID ................................................................ 13
. CONSULT-II ........................................................... 89
.
Changing A/T Fluid ............................................... 13 . Diagnostic Procedure Without CONSULT-II .......... 98 .
Checking A/T Fluid ................................................ 14 . DTC U1000 CAN COMMUNICATION LINE ........... 101 .
A/T CONTROL SYSTEM ......................................... 17 . Description ........................................................... 101
. L
Cross-Sectional View ............................................ 17 . On Board Diagnosis Logic ................................... 101 .
Shift Mechanism .................................................... 18. Possible Cause .................................................... 101
.
TCM Function ........................................................ 29
. DTC Confirmation Procedure .............................. 101 . M
CAN Communication ............................................. 30 . Wiring Diagram -- AT -- CAN ............................. 102 .
Input/Output Signal of TCM ................................... 32 . Diagnostic Procedure .......................................... 103 .
Line Pressure Control ........................................... 33 . DTC P0615 START SIGNAL CIRCUIT .................. 104 .
Shift Control .......................................................... 35
. Description ........................................................... 104
.
Lock-Up Control .................................................... 35. On Board Diagnosis Logic ................................... 104 .
Engine Brake Control ............................................ 37 . Possible Cause .................................................... 104
.
Control Valve ......................................................... 37
. DTC Confirmation Procedure .............................. 104 .
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 39 . Wiring Diagram -- AT -- STSIG ......................... 105 .
Introduction ........................................................... 39
. Diagnostic Procedure .......................................... 108 .
OBD-II Function for A/T System ............................ 39 . DTC P0705 PARK/NEUTRAL POSITION SWITCH. 110
One or Two Trip Detection Logic of OBD-II ........... 39 . Description ........................................................... 110
.
OBD-II Diagnostic Trouble Code (DTC) ................ 39 . On Board Diagnosis Logic ................................... 110 .
Malfunction Indicator Lamp (MIL) .......................... 42 . Possible Cause .................................................... 110
.
TROUBLE DIAGNOSIS ........................................... 43 . DTC Confirmation Procedure .............................. 110 .
DTC Inspection Priority Chart ............................... 43 . Wiring Diagram -- AT -- PNP/SW .......................111 .
Fail-Safe ................................................................ 43
.
Revision; 2004 April AT-1 2003 G35 Sedan
Diagnostic Procedure .......................................... 112 . (ROM) ..................................................................... 148
.
Component Inspection ......................................... 114 . Description ........................................................... 148
.
DTC P0720 VEHICLE SPEED SENSOR A/T (REV- On Board Diagnosis Logic ................................... 148 .
OLUTION SENSOR) .............................................. 115 . Possible Cause .................................................... 148 .
Description ........................................................... 115
. DTC Confirmation Procedure ............................... 148 .
On Board Diagnosis Logic ................................... 115 . Diagnostic Procedure ........................................... 149 .
Possible Cause .................................................... 115 . DTC P1704 TRANSMISSION CONTROL MODULE
DTC Confirmation Procedure .............................. 115 . (EEPROM) .............................................................. 150
.
Wiring Diagram -- AT -- VSSA/T ........................ 116 . Description ........................................................... 150
.
Diagnostic Procedure .......................................... 117 . On Board Diagnosis Logic ................................... 150 .
DTC P0725 ENGINE SPEED SIGNAL .................. 120 . Possible Cause .................................................... 150 .
Description ........................................................... 120
. DTC Confirmation Procedure ............................... 150 .
On Board Diagnosis Logic ................................... 120 . Diagnostic Procedure ........................................... 151 .
Possible Cause .................................................... 120 . DTC P1705 THROTTLE POSITION SENSOR ....... 152 .
DTC Confirmation Procedure .............................. 120 . Description ........................................................... 152
.
Diagnostic Procedure .......................................... 121 . On Board Diagnosis Logic ................................... 152 .
DTC P0740 TORQUE CONVERTER CLUTCH Possible Cause .................................................... 152 .
SOLENOID VALVE ................................................ 122 . DTC Confirmation Procedure ............................... 152 .
Description ........................................................... 122
. Diagnostic Procedure ........................................... 153 .
CONSULT-II Reference Value ............................. 122 . DTC P1710 A/T FLUID TEMPERATURE SENSOR
On Board Diagnosis Logic ................................... 122 . CIRCUIT ................................................................. 155
.
Possible Cause .................................................... 122 . Description ........................................................... 155
.
DTC Confirmation Procedure .............................. 122 . CONSULT-II Reference Value .............................. 155 .
Wiring Diagram -- AT -- TCV ............................. 123 . On Board Diagnosis Logic ................................... 155 .
Diagnostic Procedure .......................................... 124 . Possible Cause .................................................... 155 .
Component Inspection ......................................... 126 . DTC Confirmation Procedure ............................... 155 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP). 127 Wiring Diagram -- AT -- FTS .............................. 156 .
Description ........................................................... 127
. Diagnostic Procedure ........................................... 157 .
On Board Diagnosis Logic ................................... 127 . Component Inspection ......................................... 160 .
Possible Cause .................................................... 127 . DTC P1716 TURBINE REVOLUTION SENSOR ... 161 .
DTC Confirmation Procedure .............................. 127 . Description ........................................................... 161
.
Wiring Diagram -- AT -- TCCSIG ....................... 128 . On Board Diagnosis Logic ................................... 161 .
Diagnostic Procedure .......................................... 129 . Possible Cause .................................................... 161 .
Component Inspection ......................................... 131 . DTC Confirmation Procedure ............................... 161 .
DTC P0745 LINE PRESSURE SOLENOID VALVE. 132 Wiring Diagram -- AT -- TRSA/T ........................ 162 .
Description ........................................................... 132
. Diagnostic Procedure ........................................... 163 .
On Board Diagnosis Logic ................................... 132 . DTC P1721 VEHICLE SPEED SENSOR MTR ...... 166 .
Possible Cause .................................................... 132 . Description ........................................................... 166
.
DTC Confirmation Procedure .............................. 132 . On Board Diagnosis Logic ................................... 166 .
Wiring Diagram -- AT -- LPSV ........................... 133 . Possible Cause .................................................... 166 .
Diagnostic Procedure .......................................... 134 . DTC Confirmation Procedure ............................... 166 .
Component Inspection ......................................... 136 . Diagnostic Procedure ........................................... 167 .
DTC P1701 TRANSMISSION CONTROL MODULE DTC P1730 A/T INTERLOCK ................................ 168 .
(POWER SUPPLY) ................................................. 137 . Description ........................................................... 168
.
Description ........................................................... 137
. On Board Diagnosis Logic ................................... 168 .
On Board Diagnosis Logic ................................... 137 . Possible Cause .................................................... 168 .
Possible Cause .................................................... 137 . DTC Confirmation Procedure ............................... 168 .
DTC Confirmation Procedure .............................. 137 . Wiring Diagram -- AT -- I/LOCK ......................... 169 .
Wiring Diagram -- AT -- POWER ....................... 138 . Judgement of A/T Interlock .................................. 173 .
Diagnostic Procedure .......................................... 143 . Diagnostic Procedure ........................................... 173 .
Component Inspection ......................................... 145 . DTC P1731 A/T 1ST ENGINE BRAKING .............. 175 .
DTC P1702 TRANSMISSION CONTROL MODULE Description ........................................................... 175
.
(RAM) ..................................................................... 146
. On Board Diagnosis Logic ................................... 175 .
Description ........................................................... 146
. Possible Cause .................................................... 175 .
On Board Diagnosis Logic ................................... 146 . DTC Confirmation Procedure ............................... 175 .
Possible Cause .................................................... 146 . Wiring Diagram -- AT -- E/BRE .......................... 176 .
DTC Confirmation Procedure .............................. 146 . Diagnostic Procedure ........................................... 177 .
Diagnostic Procedure .......................................... 147 . DTC P1752 INPUT CLUTCH SOLENOID VALVE . 179
DTC P1703 TRANSMISSION CONTROL MODULE Description ........................................................... 179
.
Revision; 2004 April AT-2 2003 G35 Sedan
On Board Diagnosis Logic .................................. 179 . Possible Cause .................................................... 212 .
Possible Cause ................................................... 179
. DTC Confirmation Procedure .............................. 212 . A
DTC Confirmation Procedure .............................. 179 . Wiring Diagram -- AT -- HLR/CF ....................... 213 .
Wiring Diagram -- AT -- I/C ............................... 180 . Diagnostic Procedure .......................................... 214 .
Diagnostic Procedure .......................................... 181 . DTC P1772 LOW COAST BRAKE SOLENOID B
Component Inspection ........................................ 183 . VALVE .................................................................... 217
.
DTC P1754 INPUT CLUTCH SOLENOID VALVE Description ........................................................... 217
.
FUNCTION ............................................................. 184
. On Board Diagnosis Logic ................................... 217 .
Description .......................................................... 184
. Possible Cause .................................................... 217 . AT
On Board Diagnosis Logic .................................. 184 . DTC Confirmation Procedure .............................. 217 .
Possible Cause ................................................... 184
. Wiring Diagram -- AT -- LC/B ............................ 218 .
DTC Confirmation Procedure .............................. 184 . Diagnostic Procedure .......................................... 219 . D
Wiring Diagram -- AT -- I/CF ............................. 185 . Component Inspection ......................................... 221 .
Diagnostic Procedure .......................................... 186 . DTC P1774 LOW COAST BRAKE SOLENOID
DTC P1757 FRONT BRAKE SOLENOID VALVE . 188 VALVE FUNCTION ................................................. 222 . E
Description .......................................................... 188
. Description ........................................................... 222
.
On Board Diagnosis Logic .................................. 188 . On Board Diagnosis Logic ................................... 222 .
Possible Cause ................................................... 188
. Possible Cause .................................................... 222 .
DTC Confirmation Procedure .............................. 188 . DTC Confirmation Procedure .............................. 222 . F
Wiring Diagram -- AT -- FR/B ............................ 189 . Wiring Diagram -- AT -- LC/BF .......................... 223 .
Diagnostic Procedure .......................................... 190 . Diagnostic Procedure .......................................... 224 .
Component Inspection ........................................ 192 . DTC P1815 MANUAL MODE SWITCH ................. 226 . G
DTC P1759 FRONT BRAKE SOLENOID VALVE Description ........................................................... 226
.
FUNCTION ............................................................. 193
. CONSULT-II Reference Value in Data Monitor Mode
Description .......................................................... 193
. . 226 H
On Board Diagnosis Logic .................................. 193 . On Board Diagnosis Logic ................................... 226 .
Possible Cause ................................................... 193
. Possible Cause .................................................... 226 .
DTC Confirmation Procedure .............................. 193 . DTC Confirmation Procedure .............................. 226 .
I
Wiring Diagram -- AT -- FR/BF .......................... 194 . Wiring Diagram -- AT -- MMSW ........................ 227 .
Diagnostic Procedure .......................................... 195 . Diagnostic Procedure .......................................... 228 .
DTC P1762 DIRECT CLUTCH SOLENOID VALVE 198 . Component Inspection ......................................... 229 .
Description .......................................................... 198
. Position Indicator Lamp ....................................... 229 . J
On Board Diagnosis Logic .................................. 198 . DTC P1841 ATF PRESSURE SWITCH 1 .............. 230 .
Possible Cause ................................................... 198
. Description ........................................................... 230
.
DTC Confirmation Procedure .............................. 198 . On Board Diagnosis Logic ................................... 230 . K
Wiring Diagram -- AT -- D/C .............................. 199 . Possible Cause .................................................... 230 .
Diagnostic Procedure .......................................... 200 . DTC Confirmation Procedure .............................. 230 .
Component Inspection ........................................ 202 . Wiring Diagram -- AT -- FPSW1 ........................ 231 . L
DTC P1764 DIRECT CLUTCH SOLENOID VALVE Diagnostic Procedure .......................................... 232 .
FUNCTION ............................................................. 203
. DTC P1843 ATF PRESSURE SWITCH 3 .............. 234 .
Description .......................................................... 203
. Description ........................................................... 234
.
On Board Diagnosis Logic .................................. 203 . On Board Diagnosis Logic ................................... 234 . M
Possible Cause ................................................... 203
. Possible Cause .................................................... 234 .
DTC Confirmation Procedure .............................. 203 . DTC Confirmation Procedure .............................. 234 .
Wiring Diagram -- AT -- D/CF ............................ 204 . Wiring Diagram -- AT -- FPSW3 ........................ 235 .
Diagnostic Procedure .......................................... 205 . Diagnostic Procedure .......................................... 236 .
DTC P1767 HIGH AND LOW REVERSE CLUTCH DTC P1845 ATF PRESSURE SWITCH 5 .............. 238 .
SOLENOID VALVE ................................................ 207 . Description ........................................................... 238
.
Description .......................................................... 207
. On Board Diagnosis Logic ................................... 238 .
On Board Diagnosis Logic .................................. 207 . Possible Cause .................................................... 238 .
Possible Cause ................................................... 207
. DTC Confirmation Procedure .............................. 238 .
DTC Confirmation Procedure .............................. 207 . Wiring Diagram -- AT -- FPSW5 ........................ 239 .
Wiring Diagram -- AT -- HLR/C ......................... 208 . Diagnostic Procedure .......................................... 240 .
Diagnostic Procedure .......................................... 209 . DTC P1846 ATF PRESSURE SWITCH 6 .............. 242 .
Component Inspection .........................................211 . Description ........................................................... 242
.
DTC P1769 HIGH AND LOW REVERSE CLUTCH On Board Diagnosis Logic ................................... 242 .
SOLENOID VALVE FUNCTION ............................ 212 . Possible Cause .................................................... 242 .
Description .......................................................... 212
. DTC Confirmation Procedure .............................. 242 .
On Board Diagnosis Logic .................................. 212 .
Revision; 2004 April AT-3 2003 G35 Sedan
Wiring Diagram -- AT -- FPSW6 ........................ 243 . KEY INTERLOCK CABLE ..................................... 311 .
Diagnostic Procedure .......................................... 244 . Components ......................................................... 311.
PARK/NEUTRAL POSITION, MANUAL MODE, Components ......................................................... 312.
BRAKE AND THROTTLE POSITION SWITCH CIR- Removal ............................................................... 313
.
CUIT ....................................................................... 246
. Installation ............................................................ 314
.
Diagnostic Procedure .......................................... 246 . ON-VEHICLE SERVICE ......................................... 315 .
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 248 . Control Valve Assembly ....................................... 315 .
Wiring Diagram -- AT -- NONDTC ..................... 248 . Rear Oil Seal ........................................................ 321
.
A/T CHECK Indicator Lamp Does not Come on .. 253 . Parking Components ........................................... 322 .
Engine Cannot Be Started In "P" or "N" Position . 256 AIR BREATHER HOSE .......................................... 328 .
In "P" Position, Vehicle Moves When Pushed ..... 256 . Removal and Installation ...................................... 328 .
In "N" Position, Vehicle Moves ............................. 258 . TRANSMISSION ASSEMBLY ................................ 329 .
Large Shock ("N" to "D" Position) ........................ 259 . Removal and Installation ...................................... 329 .
Vehicle Does Not Creep Backward In "R" Position. 261 OVERHAUL ............................................................ 332.
Vehicle Does Not Creep Forward In "D" Position . 264 Components ......................................................... 332.
Vehicle Cannot Be Started From D1 .................... 266 . Oil Channel .......................................................... 338
.
A/T Does Not Shift: D1 D2 ............................... 269 . Locations of Adjusting Shims, Needle Bearings,
A/T Does Not Shift: D2 D3 ............................... 271 . Thrust Washers and Snap Rings ......................... 339 .
A/T Does Not Shift: D3 D4 ............................... 273 . DISASSEMBLY ...................................................... 340 .
A/T Does Not Shift: D4 D5 ............................... 276 . Disassembly ......................................................... 340
.
A/T Does Not Perform Lock-up ........................... 278 . REPAIR FOR COMPONENT PARTS ..................... 353 .
A/T Does Not Hold Lock-up Condition ................. 280 . Oil Pump .............................................................. 353
.
Lock-Up Is Not Released ..................................... 282 . Front Sun Gear, 3rd One-Way Clutch .................. 356 .
Engine Speed Does Not Return To Idle ............... 282 . Front Carrier, Input Clutch, Rear Internal Gear .... 358 .
Cannot Be Changed to Manual Mode ................. 285 . Mid Sun Gear, Rear Sun Gear, High and Low
A/T Does Not Shift: 5th Gear 4th Gear ........... 285 . Reverse Clutch Hub ............................................. 363 .
A/T Does Not Shift: 4th Gear 3rd Gear ........... 287 . High and Low Reverse Clutch ............................. 368 .
A/T Does Not Shift: 3rd Gear 2nd Gear .......... 289 . Direct Clutch ........................................................ 370
.
A/T Does Not Shift: 2nd Gear 1st Gear ........... 291 . ASSEMBLY ............................................................ 372.
Vehicle Does Not Decelerate By Engine Brake ... 293 . Assembly (1) ........................................................ 372
.
SHIFT CONTROL SYSTEM ................................... 295 . Adjustment ........................................................... 382
.
Control Device Removal and Installation (Up to Assembly (2) ........................................................ 384
.
Serial 099999 and From Serial 329288*) ............ 295 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 389 .
Control Device Removal and Installation (From General Specifications ......................................... 389 .
Serial 300001 to 329287*) ................................... 297 . Vehicle Speed When Shifting Gears .................... 389 .
Adjustment of A/T Position .................................. 298 . Vehicle Speed When Performing and Releasing
Checking of A/T Position ..................................... 298 . Complete Lock-Up ............................................... 389 .
A/T SHIFT LOCK SYSTEM .................................... 300 . Vehicle Speed When Performing and Releasing
Description ........................................................... 300
. Slip Lock-Up ......................................................... 389
.
Shift Lock System Electrical Parts Location (Up to Stall Speed ........................................................... 389
.
Serial 099999 and From Serial 329288*) ............ 300 . Line Pressure ....................................................... 390
.
Wiring Diagram -- AT -- SHIFT .......................... 301 . Solenoid Valves ................................................... 390 .
Diagnostic Procedure .......................................... 303 . A/T Fluid Temperature Sensor ............................. 390 .
Shift Lock System Electrical Parts Location (From Turbine Revolution Sensor ................................... 390 .
Serial 300001 to 329287*) ................................... 306 . Vehicle Speed Sensor A/T (Revolution Sensor) .. 390 .
Wiring Diagram -- AT -- SHIFT .......................... 307 . Reverse Brake ..................................................... 391 .
Diagnostic Procedure .......................................... 308 . Total End Play ...................................................... 391
.
Revision; 2004 April AT-4 2003 G35 Sedan
INDEX FOR DTC
INDEX FOR DTC PFP:00024
A
Alphabetical Index ACS00081
NOTE:
If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to B
AT-101 .
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-175 D
ATF PRES SW 1/CIRC -- P1841 AT-230
ATF PRES SW 3/CIRC -- P1843 AT-234
E
ATF PRES SW 5/CIRC -- P1845 AT-238
ATF PRES SW 6/CIRC -- P1846 AT-242
A/T INTERLOCK P1730 P1730 AT-168 F
A/T TCC S/V FNCTN P0744 P0744 AT-127
ATF TEMP SEN/CIRC P0710 P1710 AT-155
G
CAN COMM CIRCUIT U1000 U1000 AT-101
D/C SOLENOID/CIRC P1762 P1762 AT-198
D/C SOLENOID FNCTN P1764 P1764 AT-203 H
ENGINE SPEED SIG P0725 P0725 AT-120
FR/B SOLENOID/CIRC P1757 P1757 AT-188
I
FR/B SOLENOID FNCT P1759 P1759 AT-193
HLR/C SOL/CIRC P1767 P1767 AT-207
HLR/C SOL FNCTN P1769 P1769 AT-212 J
I/C SOLENOID/CIRC P1752 P1752 AT-179
I/C SOLENOID FNCTN P1754 P1754 AT-184
L/PRESS SOL/CIRC P0745 P0745 AT-132 K
LC/B SOLENOID/CIRC P1772 P1772 AT-217
LC/B SOLENOID FNCT P1774 P1774 AT-222
L
MANU MODE SW/CIR -- P1815 AT-226
PNP SW/CIRC P0705 P0705 AT-110
STARTER RELAY/CIRC -- P0615 AT-104 M
TCC SOLENOID/CIRC P0740 P0740 AT-122
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