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TRANSMISSION/TRANSAXLE
A
AUTOMATIC TRANSAXLE
SECTION AT B
AT
D
E
CONTENTS
SERVICE INFORMATION ........................... 5
. One or Two Trip Detection Logic of OBD-II ............36. F
OBD-II Diagnostic Trouble Code (DTC) .................36.
INDEX FOR DTC ................................................ 5
. Malfunction Indicator Lamp (MIL) ...........................38
.
Alphabetical Index .................................................... 5
. G
DTC No. Index ......................................................... 5
. TROUBLE DIAGNOSIS .................................... 39
DTC Inspection Priority Chart .................................39 .
PRECAUTIONS .................................................. 7
. Fail-Safe .................................................................39
.
Precaution for Supplemental Restraint System How to Perform Trouble Diagnosis for Quick and H
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Accurate Repair ......................................................40 .
SIONER" .................................................................. 7
. A/T Electrical Parts Location ..................................46 .
Precaution Necessary for Steering Wheel Rota- Circuit Diagram .......................................................47 . I
tion After Battery Disconnect .................................... 7 . Inspections Before Trouble Diagnosis ....................48 .
Precaution for On Board Diagnosis (OBD) System Road Test ...............................................................52.
of A/T and Engine .................................................... 7
. Check Before Engine Is Started .............................53 . J
Precaution ................................................................ 8
. Check at Idle ...........................................................53.
Service Notice or Precaution .................................... 9 . Cruise Test - Part 1 ................................................55 .
Cruise Test - Part 2 ................................................58 .
PREPARATION .................................................10
. Cruise Test - Part 3 ................................................59 . K
Special Service Tool .............................................. 10
. Vehicle Speed at Which Gear Shifting Occurs .......61 .
Commercial Service Tool ....................................... 13
. Vehicle Speed at Which Lock-up Occurs/Releas-
es ............................................................................61
. L
A/T FLUID ..........................................................15
.
Symptom Chart .......................................................61 .
Checking A/T Fluid ................................................. 15
.
TCM Terminal and Reference Value ......................71 .
Changing A/T Fluid ................................................ 15
.
CONSULT-III Function (A/T) ..................................73 . M
A/T Fluid Cooler Cleaning ...................................... 16
.
Diagnosis Procedure without CONSULT-III ...........78 .
A/T CONTROL SYSTEM ...................................19
.
Cross-Sectional View ............................................. 19.
DTC U1000 CAN COMMUNICATION LINE ..... 83
Description ..............................................................83
. N
Shift Mechanism ..................................................... 19
.
On Board Diagnosis Logic ......................................83 .
TCM Function ......................................................... 27
.
Possible Cause .......................................................83
.
CAN Communication .............................................. 28 .
DTC Confirmation Procedure .................................83 . O
Input/Output Signal of TCM .................................... 28 .
Wiring Diagram - AT - CAN ....................................84 .
Line Pressure Control ............................................ 29.
Diagnosis Procedure ..............................................85 .
Shift Control ........................................................... 30
.
Lock-up Control ...................................................... 31
. DTC P0705 PARK/NEUTRAL POSITION P
Engine Brake Control (Overrun Clutch Control) ..... 32 . (PNP) SWITCH .................................................. 86
Control Valve .......................................................... 34
.
Description ..............................................................86
.
Centrifugal Cancel Mechanism .............................. 34 .
CONSULT-III Reference Value in Data Monitor
ON BOARD DIAGNOSTIC (OBD) SYSTEM .....36
. Mode .......................................................................86
.
Introduction ............................................................ 36
. On Board Diagnosis Logic ......................................86 .
OBD-II Function for A/T System ............................. 36 . Possible Cause .......................................................86.
Revision: May 2007 AT-1 2008 Versa
DTC Confirmation Procedure ................................ 86. Description ........................................................... 114
.
Wiring Diagram - AT - PNP/SW ............................. 87 . CONSULT-III Reference Value in Data Monitor
Diagnosis Procedure ............................................. 88
. Mode .................................................................... 114
.
Component Inspection ........................................... 90
. On Board Diagnosis Logic ................................... 114 .
Possible Cause .................................................... 114 .
DTC P0710 A/T FLUID TEMPERATURE SEN- DTC Confirmation Procedure ............................... 114 .
SOR CIRCUIT ................................................... 91
. Diagnosis Procedure ............................................ 115 .
Description ............................................................. 91
.
CONSULT-III Reference Value in Data Monitor DTC P0740 TORQUE CONVERTER CLUTCH
Mode ...................................................................... 91
. SOLENOID VALVE ......................................... 119
.
On Board Diagnosis Logic ..................................... 91 . Description ........................................................... 119
.
Possible Cause ...................................................... 91. CONSULT-III Reference Value in Data Monitor
DTC Confirmation Procedure ................................ 91 . Mode .................................................................... 119
.
Wiring Diagram - AT - FTS .................................... 92 . On Board Diagnosis Logic ................................... 119 .
Diagnosis Procedure ............................................. 92 . Possible Cause .................................................... 119 .
Component Inspection ........................................... 95 . DTC Confirmation Procedure ............................... 119 .
Wiring Diagram - AT - TCV .................................. 120 .
DTC P0720 VEHICLE SPEED SENSOR A/T Diagnosis Procedure ............................................ 121 .
(REVOLUTION SENSOR) ................................ 96
. Component Inspection ......................................... 122 .
Description ............................................................. 96
.
CONSULT-III Reference Value in Data Monitor DTC P0744 A/T TCC S/V FUNCTION (LOCK-
Mode ...................................................................... 96
. UP) ................................................................... 124
.
On Board Diagnosis Logic ..................................... 96 . Description ........................................................... 124
.
Possible Cause ...................................................... 96. CONSULT-III Reference Value in Data Monitor
DTC Confirmation Procedure ................................ 96 . Mode .................................................................... 124
.
Wiring Diagram - AT - VSSA/T .............................. 97 . On Board Diagnosis Logic ................................... 124 .
Diagnosis Procedure ............................................. 98 . Possible Cause .................................................... 124 .
DTC Confirmation Procedure ............................... 124 .
DTC P0725 ENGINE SPEED SIGNAL ........... 101
. Diagnosis Procedure ............................................ 125 .
Description ............................................................101
.
CONSULT-III Reference Value in Data Monitor DTC P0745 LINE PRESSURE SOLENOID
Mode .....................................................................101
. VALVE ............................................................. 129
.
On Board Diagnosis Logic ....................................101 . Description ........................................................... 129
.
Possible Cause .....................................................101 . CONSULT-III Reference Value in Data Monitor
DTC Confirmation Procedure ...............................101 . Mode .................................................................... 129
.
Wiring Diagram - AT - ENGSS .............................102 . On Board Diagnosis Logic ................................... 129 .
Diagnosis Procedure ............................................103 . Possible Cause .................................................... 129 .
DTC Confirmation Procedure ............................... 129 .
DTC P0731 A/T 1ST GEAR FUNCTION ........ 105
. Wiring Diagram - AT - LPSV ................................ 130 .
Description ............................................................105
. Diagnosis Procedure ............................................ 131 .
On Board Diagnosis Logic ....................................105 . Component Inspection ......................................... 133 .
Possible Cause .....................................................105
.
DTC Confirmation Procedure ...............................105 . DTC P0750 SHIFT SOLENOID VALVE A ....... 134
.
Diagnosis Procedure ............................................106 . Description ........................................................... 134
.
CONSULT-III Reference Value in Data Monitor
DTC P0732 A/T 2ND GEAR FUNCTION ........ 108
. Mode .................................................................... 134
.
Description ............................................................108
. On Board Diagnosis Logic ................................... 134 .
On Board Diagnosis Logic ....................................108 . Possible Cause .................................................... 134 .
Possible Cause .....................................................108
. DTC Confirmation Procedure ............................... 134 .
DTC Confirmation Procedure ...............................108 . Wiring Diagram - AT - SSV/A ............................... 135 .
Diagnosis Procedure ............................................109 . Diagnosis Procedure ............................................ 136 .
DTC P0733 A/T 3RD GEAR FUNCTION ........ 111
. Component Inspection ......................................... 137 .
Description ............................................................111
. DTC P0755 SHIFT SOLENOID VALVE B ....... 139
.
On Board Diagnosis Logic ....................................111 . Description ........................................................... 139
.
Possible Cause .....................................................111
. CONSULT-III Reference Value in Data Monitor
DTC Confirmation Procedure ...............................111 . Mode .................................................................... 139
.
Diagnosis Procedure ............................................112 . On Board Diagnosis Logic ................................... 139 .
DTC P0734 A/T 4TH GEAR FUNCTION ........ 114
. Possible Cause .................................................... 139 .
DTC Confirmation Procedure ............................... 139 .
Revision: May 2007 AT-2 2008 Versa
Wiring Diagram - AT - SSV/B ............................... 140
. Diagnosis Procedure ............................................ 165
.
Diagnosis Procedure ............................................ 141
. A
Component Inspection ......................................... 142
. PNP, OD SWITCH AND CLOSED THROT-
TLE, WIDE OPEN THROTTLE POSITION
DTC P1760 OVERRUN CLUTCH SOLENOID SIGNAL CIRCUIT ............................................ 167
B
VALVE ............................................................. 144
. CONSULT-III Reference Value in Data Monitor
Description ........................................................... 144
. Mode ..................................................................... 167
.
CONSULT-III Reference Value in Data Monitor TCM Terminal and Reference Value .................... 167 .
Mode .................................................................... 144
. Diagnosis Procedure ............................................ 167 . AT
On Board Diagnosis Logic ................................... 144 . Component Inspection .......................................... 171 .
Possible Cause .................................................... 144.
DTC Confirmation Procedure ............................... 144 . SHIFT POSITION INDICATOR CIRCUIT ........ 172 D
Wiring Diagram - AT - OVRCSV .......................... 145 . Description ............................................................ 172
.
Diagnosis Procedure ............................................ 146 . CONSULT-III Reference Value in Data Monitor
Component Inspection ......................................... 147 . Mode ..................................................................... 172
.
Diagnosis Procedure ............................................ 172 . E
DTC VEHICLE SPEED SENSOR MTR ........... 149
.
Description ........................................................... 149
. TROUBLE DIAGNOSIS FOR SYMPTOMS .... 173
CONSULT-III Reference Value in Data Monitor Wiring Diagram - AT - NONDTC .......................... 173 . F
Mode .................................................................... 149
. OD OFF Indicator Lamp Does Not Come On ....... 176 .
On Board Diagnosis Logic ................................... 149 . Engine Cannot Be Started in "P" and "N" Position 178 ..
Possible Cause .................................................... 149. In "P" Position, Vehicle Moves Forward or Back-
G
DTC Confirmation Procedure ............................... 149 . ward When Pushed .............................................. 179 .
Wiring Diagram - AT - VSSMTR .......................... 150 . In "N" Position, Vehicle Moves ............................. 179 .
Diagnosis Procedure ............................................ 151 . Large Shock "N" "R" Position ........................... 180 .
Vehicle Does Not Creep Backward in "R" Position 181 .. H
DTC BATT/FLUID TEMP SEN (A/T FLUID Vehicle Does Not Creep Forward in "D", "2" or "1"
TEMP SENSOR CIRCUIT AND TCM POWER Position ................................................................. 182
.
SOURCE) ........................................................ 152
. Vehicle Cannot Be Started from D1 ...................... 183 . I
Description ........................................................... 152
. A/T Does Not Shift: D1 D2or Does Not Kick-
CONSULT-III Reference Value in Data Monitor down: D4 D2 ...................................................... 185 .
Mode .................................................................... 152
. A/T Does Not Shift: D2 D3 ................................. 186 . J
On Board Diagnosis Logic ................................... 152 . A/T Does Not Shift: D3 D4 ................................. 188 .
Possible Cause .................................................... 152. A/T Does Not Perform Lock-up ............................ 189 .
DTC Confirmation Procedure ............................... 152 . A/T Does Not Hold Lock-up Condition .................. 190 .
Wiring Diagram - AT - BA/FTS ............................. 153 . Lock-up Is Not Released ...................................... 191 . K
Diagnosis Procedure ............................................ 154 . Engine Speed Does Not Return to Idle (Light
Component Inspection ......................................... 156 . Braking D4 D3) .................................................. 192 .
A/T Does Not Shift: D4 D3, When OD OFF ....... 193 . L
DTC TURBINE REVOLUTION SENSOR ........ 158
. A/T Does Not Shift: D3 22, When Selector Lever
Description ........................................................... 158
. "D" "2" Position ................................................ 194 .
CONSULT-III Reference Value in Data Monitor A/T Does Not Shift: 22 11, When Selector Lever M
Mode .................................................................... 158
. "2" "1" Position ................................................. 195 .
On Board Diagnosis Logic ................................... 158 . Vehicle Does Not Decelerate by Engine Brake .... 197 .
Possible Cause .................................................... 158. TCM Self-Diagnosis Does Not Activate ................ 200 .
DTC Confirmation Procedure ............................... 158 . N
Wiring Diagram - AT - PT/SEN ............................ 159 . TRANSMISSION CONTROL MODULE .......... 202
Diagnosis Procedure ............................................ 160 . Removal and Installation ...................................... 202
.
O
CONTROL UNIT (RAM), CONTROL UNIT SHIFT CONTROL SYSTEM ............................ 203
(ROM) .............................................................. 163
. Control Device Removal and Installation .............. 203 .
Description ........................................................... 163
. Control Device Disassembly and Assembly ......... 206 .
On Board Diagnosis Logic ................................... 163 . Selector Lever Knob Removal and Installation ..... 206 . P
Possible Cause .................................................... 163
. Adjustment of A/T Position ................................... 207
.
DTC Confirmation Procedure ............................... 163 . Checking of A/T Position ...................................... 207
.
Diagnosis Procedure ............................................ 163 .
A/T SHIFT LOCK SYSTEM ............................. 209
MAIN POWER SUPPLY AND GROUND CIR- Description ............................................................ 209
.
CUIT ................................................................. 164
. Shift Lock System Parts Location ......................... 209 .
Wiring Diagram - AT - MAIN ................................ 164
. Wiring Diagram - AT - SHIFT ............................... 210 .
Revision: May 2007 AT-3 2008 Versa
Diagnosis Procedure ............................................210
. Final Drive ............................................................ 313
.
KEY INTERLOCK CABLE .............................. 213
. ASSEMBLY ..................................................... 318
.
Removal and Installation ......................................213
. Assembly (1) ........................................................ 318
.
Adjustment (1) ...................................................... 319
.
ON-VEHICLE SERVICE ................................. 216
. Assembly (2) ........................................................ 325
.
Control Valve Assembly and Accumulators ..........216 . Adjustment (2) ...................................................... 330
.
Park/Neutral Position (PNP) Switch .....................219 . Assembly (3) ........................................................ 333
.
Revolution Sensor ................................................221.
Turbine Revolution Sensor (Power Train Revolu- SERVICE DATA AND SPECIFICATIONS
tion Sensor) ..........................................................222
. (SDS) ............................................................... 341
.
Differential Side Oil Seal .......................................223. General Specification ........................................... 341 .
Vehicle Speed at Which Gear Shifting Occurs .... 341 .
AIR BREATHER HOSE .................................. 225
. Vehicle Speed at When Lock-up Occurs/Releases
Removal and Installation ......................................225
. . 341
TRANSAXLE ASSEMBLY ............................. 226
. Stall Speed ........................................................... 341
.
Line Pressure ....................................................... 341
.
Removal and Installation ......................................226
.
Adjusting shims, Needle Bearings, Thrust Wash-
OVERHAUL .................................................... 230
. ers and Snap Rings ............................................. 341 .
Component ...........................................................230
. Control Valves ...................................................... 343
.
Oil Channel ...........................................................237
. Accumulator ......................................................... 343
.
Location of Adjusting Shims, Needle Bearings and Clutches and Brakes ............................................ 343 .
Thrust Washers ....................................................238
. Final Drive ............................................................ 345
.
Location of Snap Rings ........................................239 . Planetary Carrier .................................................. 345
.
Oil Pump .............................................................. 345
.
DISASSEMBLY .............................................. 240
. Input Shaft ............................................................ 345
.
Disassembly .........................................................240
. Reduction Pinion Gear ......................................... 345 .
Band Servo .......................................................... 345
.
REPAIR FOR COMPONENT PARTS ............. 257
. Output Shaft ......................................................... 346
.
Manual Shaft ........................................................257
. Bearing Retainer .................................................. 346.
Oil Pump ...............................................................260
. Total End Play ...................................................... 346
.
Control Valve Assembly .......................................263 . Reverse Clutch End Play ..................................... 346 .
Control Valve Upper Body ....................................272 . Removal and Installation ...................................... 346 .
Control Valve Lower Body ....................................276 . Shift Solenoid Valves ........................................... 346 .
Reverse Clutch .....................................................279
. Solenoid Valves ................................................... 346.
High Clutch ...........................................................284
. A/T Fluid Temperature Sensor ............................. 347 .
Forward and Overrun Clutches ............................288 . Revolution Sensor ................................................ 347 .
Low & Reverse Brake ...........................................295 . Dropping Resistor ................................................ 347 .
Rear Internal Gear and Forward Clutch Hub ........299 . Turbine Revolution Sensor (Power Train Revolu-
Output Shaft, Output Gear, Idler Gear, Reduction tion Sensor) .......................................................... 347
.
Pinion Gear and Bearing Retainer ........................302 .
Band Servo Piston Assembly ...............................307 .
Revision: May 2007 AT-4 2008 Versa
INDEX FOR DTC
< SERVICE INFORMATION >
SERVICE INFORMATION A
INDEX FOR DTC
Alphabetical Index INFOID:0000000001703149
B
NOTE:
If DTC "CAN COMM CIRCUIT" is displayed with other DTCs, first perform the trouble diagnosis for
DTC "CAN COMM CIRCUIT". Refer to AT-83. AT
Items DTC
Reference page D
(CONSULT-III screen terms) CONSULT-III or GST*1
A/T 1ST GR FNCTN P0731 AT-105
A/T 2ND GR FNCTN P0732 AT-108 E
A/T 3RD GR FNCTN P0733 AT-111
A/T 4TH GR FNCTN P0734 AT-114
A/T TCC S/V FNCTN P0744 AT-124 F
ATF TEMP SEN/CIRC P0710 AT-91
BATT/FLUID TEMP SEN -- AT-152
G
CAN COMM CIRCUIT U1000 AT-83
CONTROL UNIT (RAM) -- AT-163
CONTROL UNIT (ROM) -- AT-163 H
ENGINE SPEED SIG P0725 AT-101
LINE PRESSURE S/V P0745 AT-129
I
OVERRUN CLUTCH S/V P1760 AT-144
PNP SW/CIRC P0705 AT-86
SHIFT SOLENOID/V A* 2 P0750 AT-134 J
SHIFT SOLENOID/V B*2 P0755 AT-139
T/C CLUTCH SOL/V P0740 AT-119
K
TURBINE SENSOR -- AT-158
VHCL SPEED SEN-A/T*3 P0720 AT-96
VHCL SPEED SEN-MTR -- AT-149 L
*1: These numbers is prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
M
*3: The MIL illuminates when both the "Revolution sensor signal" and the "Vehicle speed sensor signal" meet the fail-safe condition at
the same time.
DTC No. Index INFOID:0000000001703150
N
NOTE:
If DTC "CAN COMM CIRCUIT" is displayed with other DTCs, first perform the trouble diagnosis for
DTC "CAN COMM CIRCUIT". Refer to AT-83. O
DTC Items
Reference page P
CONSULT-III or GST*1 (CONSULT-III screen terms)
P0705 PNP SW/CIRC AT-86
P0710 ATF TEMP SEN/CIRC AT-91
P0720 3 AT-96
VHCL SPEED SEN-A/T*
P0725 ENGINE SPEED SIG AT-101
P0731 A/T 1ST GR FNCTN AT-105
Revision: May 2007 AT-5 2008 Versa
INDEX FOR DTC
< SERVICE INFORMATION >
DTC Items
Reference page
CONSULT-III or GST*1 (CONSULT-III screen terms)
P0732 A/T 2ND GR FNCTN AT-108
P0733 A/T 3RD GR FNCTN AT-111
P0734 A/T 4TH GR FNCTN AT-114
P0740 T/C CLUTCH SOL/V AT-119
P0744 A/T TCC S/V FNCTN AT-124
P0745 LINE PRESSURE S/V AT-129
P0750 2 AT-134
SHIFT SOLENOID/V A*
P0755 SHIFT SOLENOID/V B*2 AT-139
P1760 OVERRUN CLUTCH S/V AT-144
U1000 CAN COMM CIRCUIT AT-83
-- BATT/FLUID TEMP SEN AT-152
-- CONTROL UNIT (RAM) AT-163
-- CONTROL UNIT (ROM) AT-163
-- TURBINE SENSOR AT-158
-- VHCL SPEED SEN-MTR AT-149
*1: These numbers is prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
*3: The MIL illuminates when both the "Revolution sensor signal" and the "Vehicle speed sensor signal" meet the fail-safe condition at
the same time.
Revision: May 2007 AT-6 2008 Versa
PRECAUTIONS
< SERVICE INFORMATION >
PRECAUTIONS
A
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000001703151
B
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS AT
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual. D
WARNING:
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