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AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
A
AUTOMATIC TRANSMISSION
SECTION AT B
AT
D
E
CONTENTS
INDEX FOR DTC ....................................................... 5 . Accurate Repair ..................................................... 45
. F
Alphabetical Index ................................................... 5
. A/T Electrical Parts Location ................................. 50 .
DTC No. Index ........................................................ 6
. Circuit Diagram ...................................................... 52
.
PRECAUTIONS ......................................................... 7 . Inspections Before Trouble Diagnosis ................... 53 . G
Precautions for Supplemental Restraint System Check Before Engine Is Started ............................ 56 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Check at Idle .......................................................... 57
.
SIONER" ................................................................. 7
. Cruise Test - Part 1 ................................................ 61
.
H
Precautions for Battery Service ............................... 7 . Cruise Test - Part 2 ................................................ 64
.
Precautions for On Board Diagnostic (OBD) System Cruise Test - Part 3 ................................................ 65
.
of A/T and Engine ................................................... 7. Vehicle Speed at When Gears Shifting Occurs ..... 66 .
Precautions ............................................................. 8
. Vehicle Speed at Which Lock-up Occurs/Releases 66 ... I
Service Notice or Precautions ................................. 9 . Symptom Chart ...................................................... 67
.
PREPARATION ........................................................ 10 . TCM Input/Output Signal Reference Values .......... 91 .
Special Service Tools ............................................ 10 . CONSULT-II Function (A/T) ................................... 92 . J
Commercial Service Tools ......................................11 . Diagnostic Procedure Without CONSULT-II ........ 105 .
A/T FLUID ................................................................ 12
. DTC U1000 CAN COMMUNICATION LINE ........... 109 .
Changing A/T Fluid ............................................... 12 . Description ........................................................... 109
.
K
Checking A/T Fluid ................................................ 12 . On Board Diagnosis Logic ................................... 109 .
A/T Fluid Cooler Cleaning ..................................... 14 . Possible Cause .................................................... 109
.
A/T CONTROL SYSTEM ......................................... 17 . DTC Confirmation Procedure .............................. 109 .
Cross-sectional View ............................................. 17 . Wiring Diagram -- AT -- CAN ............................. 110 . L
Shift Mechanism .................................................... 18. Diagnostic Procedure ...........................................111 .
TCM Function ........................................................ 29
. DTC P0615 START SIGNAL CIRCUIT .................. 112 .
CAN Communication ............................................. 31 . Description ........................................................... 112
. M
Input/Output Signal of TCM ................................... 31 . CONSULT-II Reference Value ............................. 112 .
Line Pressure Control ........................................... 32 . On Board Diagnosis Logic ................................... 112 .
Shift Control .......................................................... 33
. Possible Cause .................................................... 112
.
Lock-up Control ..................................................... 35
. DTC Confirmation Procedure .............................. 112 .
Engine Brake Control ............................................ 36 . Wiring Diagram -- AT -- STSIG ......................... 113 .
Control Valve ......................................................... 37
. Diagnostic Procedure .......................................... 114 .
ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 39 . DTC P0700 TCM .................................................... 116 .
Introduction ........................................................... 39
. Description ........................................................... 116
.
OBD-II Function for A/T System ............................ 39 . On Board Diagnosis Logic ................................... 116 .
One or Two Trip Detection Logic of OBD-II ........... 39 . Possible Cause .................................................... 116
.
OBD-II Diagnostic Trouble Code (DTC) ................ 39 . DTC Confirmation Procedure .............................. 116 .
Malfunction Indicator Lamp (MIL) .......................... 42 . Diagnostic Procedure .......................................... 116 .
TROUBLE DIAGNOSIS ........................................... 43 . DTC P0705 PARK/NEUTRAL POSITION SWITCH. 117
DTC Inspection Priority Chart ............................... 43 . Description ........................................................... 117
.
Fail-safe ................................................................ 43
. CONSULT-II Reference Value ............................. 117 .
How To Perform Trouble Diagnosis for Quick and On Board Diagnosis Logic ................................... 117 .
Revision: 2005 August AT-1 2005 350Z
Possible Cause .................................................... 117 . On Board Diagnosis Logic ................................... 136 .
DTC Confirmation Procedure .............................. 117 . Possible Cause .................................................... 136.
Wiring Diagram -- AT -- PNP/SW ...................... 118 . DTC Confirmation Procedure ............................... 136 .
Diagnostic Procedure .......................................... 119 . Diagnostic Procedure ........................................... 137 .
DTC P0720 VEHICLE SPEED SENSOR A/T (REV- DTC P1710 A/T FLUID TEMPERATURE SENSOR
OLUTION SENSOR) .............................................. 121 . CIRCUIT ................................................................. 139
.
Description ........................................................... 121
. Description ........................................................... 139
.
CONSULT-II Reference Value ............................. 121 . CONSULT-II Reference Value .............................. 139 .
On Board Diagnosis Logic ................................... 121 . On Board Diagnosis Logic ................................... 139 .
Possible Cause .................................................... 121 . Possible Cause .................................................... 139.
DTC Confirmation Procedure .............................. 121 . DTC Confirmation Procedure ............................... 139 .
Wiring Diagram -- AT -- VSSA/T ........................ 123 . Wiring Diagram -- AT -- FTS .............................. 140 .
Diagnostic Procedure .......................................... 124 . Diagnostic Procedure ........................................... 141 .
DTC P0725 ENGINE SPEED SIGNAL .................. 126 . Component Inspection ......................................... 143 .
Description ........................................................... 126
. DTC P1716 TURBINE REVOLUTION SENSOR ... 144 .
CONSULT-II Reference Value ............................. 126 . Description ........................................................... 144
.
On Board Diagnosis Logic ................................... 126 . CONSULT-II Reference Value .............................. 144 .
Possible Cause .................................................... 126 . On Board Diagnosis Logic ................................... 144 .
DTC Confirmation Procedure .............................. 126 . Possible Cause .................................................... 144.
Diagnostic Procedure .......................................... 127 . DTC Confirmation Procedure ............................... 144 .
DTC P0740 TORQUE CONVERTER CLUTCH Diagnostic Procedure ........................................... 145 .
SOLENOID VALVE ................................................ 128 . DTC P1721 VEHICLE SPEED SENSOR MTR ...... 146 .
Description ........................................................... 128
. Description ........................................................... 146
.
CONSULT-II Reference Value ............................. 128 . CONSULT-II Reference Value .............................. 146 .
On Board Diagnosis Logic ................................... 128 . On Board Diagnosis Logic ................................... 146 .
Possible Cause .................................................... 128 . Possible Cause .................................................... 146.
DTC Confirmation Procedure .............................. 128 . DTC Confirmation Procedure ............................... 146 .
Diagnostic Procedure .......................................... 129 . Diagnostic Procedure ........................................... 147 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP). 130 DTC P1730 A/T INTERLOCK ................................ 148 .
Description ........................................................... 130
. Description ........................................................... 148
.
CONSULT-II Reference Value ............................. 130 . On Board Diagnosis Logic ................................... 148 .
On Board Diagnosis Logic ................................... 130 . Possible Cause .................................................... 148.
Possible Cause .................................................... 130 . DTC Confirmation Procedure ............................... 148 .
DTC Confirmation Procedure .............................. 130 . Judgement of A/T Interlock .................................. 149 .
Diagnostic Procedure .......................................... 131 . Diagnostic Procedure ........................................... 149 .
DTC P0745 LINE PRESSURE SOLENOID VALVE. 132 DTC P1731 A/T 1ST ENGINE BRAKING .............. 151 .
Description ........................................................... 132
. Description ........................................................... 151
.
CONSULT-II Reference Value ............................. 132 . CONSULT-II Reference Value .............................. 151 .
On Board Diagnosis Logic ................................... 132 . On Board Diagnosis Logic ................................... 151 .
Possible Cause .................................................... 132 . Possible Cause .................................................... 151.
DTC Confirmation Procedure .............................. 132 . DTC Confirmation Procedure ............................... 151 .
Diagnostic Procedure .......................................... 133 . Diagnostic Procedure ........................................... 152 .
DTC P1702 TRANSMISSION CONTROL MODULE DTC P1752 INPUT CLUTCH SOLENOID VALVE . 153
(RAM) ..................................................................... 134
. Description ........................................................... 153
.
Description ........................................................... 134
. CONSULT-II Reference Value .............................. 153 .
On Board Diagnosis Logic ................................... 134 . On Board Diagnosis Logic ................................... 153 .
Possible Cause .................................................... 134 . Possible Cause .................................................... 153.
DTC Confirmation Procedure .............................. 134 . DTC Confirmation Procedure ............................... 153 .
Diagnostic Procedure .......................................... 134 . Diagnostic Procedure ........................................... 154 .
DTC P1703 TRANSMISSION CONTROL MODULE DTC P1754 INPUT CLUTCH SOLENOID VALVE
(ROM) ..................................................................... 135
. FUNCTION ............................................................. 155
.
Description ........................................................... 135
. Description ........................................................... 155
.
On Board Diagnosis Logic ................................... 135 . CONSULT-II Reference Value .............................. 155 .
Possible Cause .................................................... 135 . On Board Diagnosis Logic ................................... 155 .
DTC Confirmation Procedure .............................. 135 . Possible Cause .................................................... 155.
Diagnostic Procedure .......................................... 135 . DTC Confirmation Procedure ............................... 155 .
DTC P1705 THROTTLE POSITION SENSOR ...... 136 . Diagnostic Procedure ........................................... 156 .
Description ........................................................... 136
. DTC P1757 FRONT BRAKE SOLENOID VALVE .. 157 .
CONSULT-II Reference Value ............................. 136 . Description ........................................................... 157
.
Revision: 2005 August AT-2 2005 350Z
CONSULT-II Reference Value ............................. 157 . DTC Confirmation Procedure .............................. 171 .
On Board Diagnosis Logic .................................. 157 . Diagnostic Procedure .......................................... 172 . A
Possible Cause ................................................... 157 . DTC P1815 MANUAL MODE SWITCH ................. 173 .
DTC Confirmation Procedure .............................. 157 . Description ........................................................... 173
.
Diagnostic Procedure .......................................... 158 . CONSULT-II Reference Value in Data Monitor Mode B
DTC P1759 FRONT BRAKE SOLENOID VALVE . 173
FUNCTION ............................................................. 159
. On Board Diagnosis Logic ................................... 173 .
Description .......................................................... 159
. Possible Cause .................................................... 173
.
CONSULT-II Reference Value ............................. 159 . DTC Confirmation Procedure .............................. 173 . AT
On Board Diagnosis Logic .................................. 159 . Wiring Diagram -- AT -- MMSW ........................ 174 .
Possible Cause ................................................... 159 . Diagnostic Procedure .......................................... 176 .
DTC Confirmation Procedure .............................. 159 . Component Inspection ......................................... 177 . D
Diagnostic Procedure .......................................... 160 . DTC P1841 ATF PRESSURE SWITCH 1 .............. 178 .
DTC P1762 DIRECT CLUTCH SOLENOID VALVE 161 . Description ........................................................... 178
.
Description .......................................................... 161
. CONSULT-II Reference Value ............................. 178 . E
CONSULT-II Reference Value ............................. 161 . On Board Diagnosis Logic ................................... 178 .
On Board Diagnosis Logic .................................. 161 . Possible Cause .................................................... 178
.
Possible Cause ................................................... 161 . DTC Confirmation Procedure .............................. 178 .
DTC Confirmation Procedure .............................. 161 . Diagnostic Procedure .......................................... 179 . F
Diagnostic Procedure .......................................... 162 . DTC P1843 ATF PRESSURE SWITCH 3 .............. 180 .
DTC P1764 DIRECT CLUTCH SOLENOID VALVE Description ........................................................... 180
.
FUNCTION ............................................................. 163
. CONSULT-II Reference Value ............................. 180 . G
Description .......................................................... 163
. On Board Diagnosis Logic ................................... 180 .
CONSULT-II Reference Value ............................. 163 . Possible Cause .................................................... 180
.
On Board Diagnosis Logic .................................. 163 . DTC Confirmation Procedure .............................. 180 . H
Possible Cause ................................................... 163 . Diagnostic Procedure .......................................... 181 .
DTC Confirmation Procedure .............................. 163 . DTC P1845 ATF PRESSURE SWITCH 5 .............. 182 .
Diagnostic Procedure .......................................... 164 . Description ........................................................... 182
.
I
DTC P1767 HIGH AND LOW REVERSE CLUTCH CONSULT-II Reference Value ............................. 182 .
SOLENOID VALVE ................................................ 165 . On Board Diagnosis Logic ................................... 182 .
Description .......................................................... 165
. Possible Cause .................................................... 182
.
CONSULT-II Reference Value ............................. 165 . DTC Confirmation Procedure .............................. 182 . J
On Board Diagnosis Logic .................................. 165 . Diagnostic Procedure .......................................... 183 .
Possible Cause ................................................... 165 . DTC P1846 ATF PRESSURE SWITCH 6 .............. 184 .
DTC Confirmation Procedure .............................. 165 . Description ........................................................... 184
. K
Diagnostic Procedure .......................................... 166 . CONSULT-II Reference Value ............................. 184 .
DTC P1769 HIGH AND LOW REVERSE CLUTCH On Board Diagnosis Logic ................................... 184 .
SOLENOID VALVE FUNCTION ............................ 167 . Possible Cause .................................................... 184
. L
Description .......................................................... 167
. DTC Confirmation Procedure .............................. 184 .
CONSULT-II Reference Value ............................. 167 . Diagnostic Procedure .......................................... 185 .
On Board Diagnosis Logic .................................. 167 . MAIN POWER SUPPLY AND GROUND CIRCUIT. 186
Possible Cause ................................................... 167 . Wiring Diagram -- AT -- MAIN ........................... 186 . M
DTC Confirmation Procedure .............................. 167 . Diagnostic Procedure .......................................... 187 .
Diagnostic Procedure .......................................... 168 . CLOSED THROTTLE POSITION AND WIDE OPEN
DTC P1772 LOW COAST BRAKE SOLENOID THROTTLE POSITION CIRCUIT ........................... 190 .
VALVE .................................................................... 169
. CONSULT-II Reference Value ............................. 190 .
Description .......................................................... 169
. Diagnostic Procedure .......................................... 190 .
CONSULT-II Reference Value ............................. 169 . BRAKE SIGNAL CIRCUIT ..................................... 191 .
On Board Diagnosis Logic .................................. 169 . CONSULT-II Reference Value ............................. 191 .
Possible Cause ................................................... 169 . Diagnostic Procedure .......................................... 191 .
DTC Confirmation Procedure .............................. 169 . A/T INDICATOR CIRCUIT ...................................... 192 .
Diagnostic Procedure .......................................... 170 . Description ........................................................... 192
.
DTC P1774 LOW COAST BRAKE SOLENOID CONSULT-II Reference Value ............................. 192 .
VALVE FUNCTION ................................................ 171 . Diagnostic Procedure .......................................... 192 .
Description .......................................................... 171
. TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 193 .
CONSULT-II Reference Value ............................. 171 . Wiring Diagram -- AT -- NONDTC ..................... 193 .
On Board Diagnosis Logic .................................. 171 . A/T Check Indicator Lamp Does Not Come On ... 196 .
Possible Cause ................................................... 171 . Engine Cannot Be Started in "P" or "N" Position . 196
In "P" Position, Vehicle Moves When Pushed ..... 197 .
Revision: 2005 August AT-3 2005 350Z
In "N" Position, Vehicle Moves ............................. 198 . Rear Oil Seal ........................................................ 265
.
Large Shock ("N" to "D" Position) ........................ 199 . Revolution Sensor ................................................ 266.
Vehicle Does Not Creep Backward in "R" Position. 202 AIR BREATHER HOSE .......................................... 271 .
Vehicle Does Not Creep Forward in "D" Position . 205 Removal and Installation ...................................... 271 .
Vehicle Cannot Be Started From D1 .................... 207 . TRANSMISSION ASSEMBLY ................................ 272 .
A/T Does Not Shift: D1 D2 ............................... 210 . Removal and Installation ...................................... 272 .
A/T Does Not Shift: D2 D3 ............................... 212 . OVERHAUL ............................................................ 275
.
A/T Does Not Shift: D3 D4 ............................... 215 . Components ......................................................... 275
.
A/T Does Not Shift: D4 D5 ............................... 217 . Oil Channel .......................................................... 281
.
A/T Does Not Lock-up ......................................... 220 . Locations of Adjusting Shims, Needle Bearings,
A/T Does Not Hold Lock-up Condition ................. 222 . Thrust Washers and Snap Rings ......................... 282 .
Lock-up Is Not Released ..................................... 223 . DISASSEMBLY ...................................................... 283 .
Engine Speed Does Not Return to Idle ............... 224 . Disassembly ......................................................... 283
.
Cannot Be Changed to Manual Mode ................. 225 . REPAIR FOR COMPONENT PARTS ..................... 300 .
A/T Does Not Shift: 5th gear 4th gear ............. 226 . Oil Pump .............................................................. 300
.
A/T Does Not Shift: 4th gear 3rd gear ............. 228 . Front Sun Gear, 3rd One-way Clutch ................... 303 .
A/T Does Not Shift: 3rd gear 2nd gear ............ 230 . Front Carrier, Input Clutch, Rear Internal Gear .... 305 .
A/T Does Not Shift: 2nd gear 1st gear ............ 232 . Mid Sun Gear, Rear Sun Gear, High and Low
Vehicle Does Not Decelerate by Engine Brake ... 234 . Reverse Clutch Hub ............................................. 310 .
SHIFT CONTROL SYSTEM ................................... 236 . High and Low Reverse Clutch ............................. 315 .
Control Device Removal and Installation ............. 236 . Direct Clutch ........................................................ 317
.
Control Rod Removal and Installation ................. 237 . ASSEMBLY ............................................................ 319
.
Adjustment of A/T Position .................................. 238 . Assembly (1) ........................................................ 319
.
Checking of A/T Position ..................................... 238 . Adjustment ........................................................... 331
.
A/T SHIFT LOCK SYSTEM .................................... 239 . Assembly (2) ........................................................ 333
.
Description ........................................................... 239
. SERVICE DATA AND SPECIFICATIONS (SDS) ... 341 .
Shift Lock System Electrical Parts Location ........ 239 . General Specifications ......................................... 341 .
Wiring Diagram -- AT -- SHIFT .......................... 240 . Vehicle Speed at Which Gear Shifting Occurs ..... 341 .
Diagnostic Procedure .......................................... 241 . Vehicle Speed at Which Lock-up Occurs/Releases.341
KEY INTERLOCK CABLE ..................................... 243 . Stall Speed ........................................................... 341
.
Components ........................................................ 243
. Line Pressure ....................................................... 341
.
Removal and Installation ..................................... 244 . A/T Fluid Temperature Sensor ............................. 342 .
ON-VEHICLE SERVICE ......................................... 246 . Turbine Revolution Sensor ................................... 342 .
Control Valve with TCM and A/T Fluid Temperature Vehicle Speed Sensor A/T (Revolution Sensor) .. 342 .
Sensor 2 .............................................................. 246
. Reverse Brake ..................................................... 342
.
Parking Components ........................................... 258 . Total End Play ...................................................... 342
.
Revision: 2005 August AT-4 2005 350Z
INDEX FOR DTC
INDEX FOR DTC PFP:00024
A
Alphabetical Index ACS000GR
NOTE:
If DTC "U1000" is displayed with other DTCs, first perform the trouble diagnosis for "DTC U1000 CAN B
COMMUNICATION LINE". Refer to AT-109 .
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-151 D
ATF PRES SW 1/CIRC -- P1841 AT-178
ATF PRES SW 3/CIRC -- P1843 AT-180
E
ATF PRES SW 5/CIRC -- P1845 AT-182
ATF PRES SW 6/CIRC -- P1846 AT-184
A/T INTERLOCK P1730 P1730 AT-148 F
A/T TCC S/V FNCTN P0744 P0744 AT-130
ATF TEMP SEN/CIRC P0710 P1710 AT-139
G
CAN COMM CIRCUIT U1000 U1000 AT-109
D/C SOLENOID/CIRC P1762 P1762 AT-161
D/C SOLENOID FNCTN P1764 P1764 AT-163 H
ENGINE SPEED SIG P0725 P0725 AT-126
FR/B SOLENOID/CIRC P1757 P1757 AT-157
I
FR/B SOLENOID FNCT P1759 P1759 AT-159
HLR/C SOL/CIRC P1767 P1767 AT-165
HLR/C SOL FNCTN P1769 P1769 AT-167 J
I/C SOLENOID/CIRC P1752 P1752 AT-153
I/C SOLENOID FNCTN P1754 P1754 AT-155
L/PRESS SOL/CIRC P0745 P0745 AT-132 K
LC/B SOLENOID/CIRC P1772 P1772 AT-169
LC/B SOLENOID FNCT P1774 P1774 AT-171
L
MANU MODE SW/CIRC -- P1815 AT-173
PNP SW/CIRC P0705 P0705 AT-117
STARTER RELAY/CIRC -- P0615 AT-112 M
TCC SOLENOID/CIRC P0740 P0740 AT-128
TCM P0700 P0700 AT-116
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