2011 NISSAN LATIO diagram

AT-1
TRANSMISSION/TRANSAXLE
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CONTENTS
AUTOMATIC TRANSAXLE
SERVICE INFORMATION .. ..........................5
INDEX FOR DTC ............................................ .....5
Alphabetical Index ............................................... ......5
DTC No. Index ..........................................................5
PRECAUTIONS ...................................................7
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
7
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
7
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine .....................................................
8
Precaution .................................................................8
Service Notice or Precaution .....................................9
PREPARATION ..................................................11
Special Service Tool ........................................... ....11
Commercial Service Tool ........................................14
A/T FLUID ...........................................................17
Checking A/T Fluid ..................................................17
Changing A/T Fluid .................................................17
A/T Fluid Cooler Cleaning .......................................18
A/T CONTROL SYSTEM ....................................21
Cross-Sectional View ..............................................21
Shift Mechanism .................................................. ....22
TCM Function ..........................................................30
CAN Communication ...............................................31
Input/Output Signal of TCM .....................................31
Line Pressure Control .............................................32
Shift Control ........................................................ ....33
Lock-up Control .......................................................34
Engine Brake Control (Overrun Clutch Control) ......35
Control Valve ....................................................... ....37
Centrifugal Cancel Mechanism ...............................37
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......39
Introduction ......................................................... ....39
OBD-II Function for A/T System ..............................39
One or Two Trip Detection Logic of OBD-II ......... ....39
OBD-II Diagnostic Trouble Code (DTC) ..................39
Malfunction Indicator Lamp (MIL) ............................41
TROUBLE DIAGNOSIS ....................................42
DTC Inspection Priority Chart ..................................42
Fail-Safe ..................................................................42
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
43
A/T Electrical Parts Location ...................................49
Circuit Diagram ........................................................50
Inspections Before Trouble Diagnosis .....................51
Road Test ................................................................55
Check Before Engine Is Started ..............................56
Check at Idle ............................................................56
Cruise Test - Part 1 .................................................58
Cruise Test - Part 2 .................................................61
Cruise Test - Part 3 .................................................62
Vehicle Speed at Which Gear Shifting Occurs ........64
Vehicle Speed at Which Lock-up Occurs/Releas-
es .............................................................................
64
Symptom Chart ........................................................65
TCM Terminal and Reference Value .......................75
CONSULT-III Function (TRANSMISSION) .......... ....77
Diagnosis Procedure without CONSULT-III ............82
U1000 CAN COMM CIRCUIT ...........................87
Description ........................................................... ....87
On Board Diagnosis Logic .......................................87
Possible Cause ........................................................87
DTC Confirmation Procedure ..................................87
Wiring Diagram - AT - CAN .....................................88
Diagnosis Procedure ...............................................89
P0705 TRANSMISSION RANGE SWITCH A ...90
Description ...............................................................90
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ....
90
On Board Diagnosis Logic .......................................90
Possible Cause ........................................................90
DTC Confirmation Procedure ..................................90
Revision: May 2010 2011 Versa

AT-2
Wiring Diagram - AT - TR/SW ................................91
Diagnosis Procedure ..............................................92
Component Inspection ............................................94
P0710 TRANSMISSION FLUID TEMPERA-
TURE SENSOR A ..............................................
95
Description ........................................................... ...95
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ...
95
On Board Diagnosis Logic ......................................95
Possible Cause .......................................................95
DTC Confirmation Procedure .................................95
Wiring Diagram - AT - FTS .....................................96
Diagnosis Procedure ..............................................96
Component Inspection ............................................99
P0720 OUTPUT SPEED SENSOR ..................100
Description ........................................................... ..100
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
100
On Board Diagnosis Logic .....................................100
Possible Cause ......................................................100
DTC Confirmation Procedure ................................100
Wiring Diagram - AT - VSSA/T ..............................101
Diagnosis Procedure ........................................... ..102
P0725 ENGINE SPEED ...................................105
Description ........................................................... ..105
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
105
On Board Diagnosis Logic .....................................105
Possible Cause ......................................................105
DTC Confirmation Procedure ................................105
Wiring Diagram - AT - ENGSS ..............................106
Diagnosis Procedure .............................................107
P0731 1GR INCORRECT RATIO ....................109
Description ........................................................... ..109
On Board Diagnosis Logic .....................................109
Possible Cause ......................................................109
DTC Confirmation Procedure ................................109
Diagnosis Procedure .............................................110
P0732 2GR INCORRECT RATIO ....................112
Description ........................................................... ..112
On Board Diagnosis Logic .....................................112
Possible Cause ......................................................112
DTC Confirmation Procedure ................................112
Diagnosis Procedure .............................................113
P0733 3GR INCORRECT RATIO ....................115
Description ........................................................... ..115
On Board Diagnosis Logic .....................................115
Possible Cause ......................................................115
DTC Confirmation Procedure ................................115
Diagnosis Procedure .............................................116
P0734 4GR INCORRECT RATIO ....................118
Description ........................................................... ..118
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
118
On Board Diagnosis Logic ....................................118
Possible Cause .....................................................118
DTC Confirmation Procedure ................................118
Diagnosis Procedure .............................................119
P0740 TORQUE CONVERTER ........................123
Description ........................................................... .123
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
123
On Board Diagnosis Logic ....................................123
Possible Cause .....................................................123
DTC Confirmation Procedure ................................123
Wiring Diagram - AT - TCV ...................................124
Diagnosis Procedure .............................................125
Component Inspection ..........................................126
P0744 TORQUE CONVERTER ........................128
Description ........................................................... .128
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
128
On Board Diagnosis Logic ....................................128
Possible Cause .....................................................128
DTC Confirmation Procedure ................................128
Diagnosis Procedure .............................................129
P0745 PRESSURE CONTROL SOLENOID A ..133
Description ........................................................... .133
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
133
On Board Diagnosis Logic ....................................133
Possible Cause .....................................................133
DTC Confirmation Procedure ................................133
Wiring Diagram - AT - LPSV .................................134
Diagnosis Procedure .............................................135
Component Inspection ..........................................137
P0750 SHIFT SOLENOID A .............................138
Description ............................................................138
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
138
On Board Diagnosis Logic ....................................138
Possible Cause .....................................................138
DTC Confirmation Procedure ................................138
Wiring Diagram - AT - SSV/A ................................139
Diagnosis Procedure ............................................ .140
Component Inspection ..........................................141
P0755 SHIFT SOLENOID B .............................143
Description ............................................................143
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
143
On Board Diagnosis Logic ....................................143
Possible Cause .....................................................143
DTC Confirmation Procedure ................................143
Wiring Diagram - AT - SSV/B ................................144
Diagnosis Procedure ............................................ .145
Component Inspection ..........................................146
Revision: May 2010 2011 Versa

AT-3
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P1760 OVERRUN CLUTCH
SOLENOID .........148
Description .......................................................... ..148
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
148
On Board Diagnosis Logic ....................................148
Possible Cause .....................................................148
DTC Confirmation Procedure ................................148
Wiring Diagram - AT - OVRCSV ...........................149
Diagnosis Procedure .............................................150
Component Inspection ..........................................151
VEHICLE SPEED SIGNAL ...............................153
Description .......................................................... ..153
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
153
On Board Diagnosis Logic ....................................153
Possible Cause .....................................................153
DTC Confirmation Procedure ................................153
Wiring Diagram - AT - VSSMTR ...........................154
Diagnosis Procedure ........................................... ..155
BATT/FLUID TEMP SEN .................................156
Description .......................................................... ..156
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
156
On Board Diagnosis Logic ....................................156
Possible Cause .....................................................156
DTC Confirmation Procedure ................................156
Wiring Diagram - AT - BA/FTS ..............................157
Diagnosis Procedure .............................................158
Component Inspection ..........................................160
INPUT SPEED SENSOR A ..............................162
Description .......................................................... ..162
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
162
On Board Diagnosis Logic ....................................162
Possible Cause .....................................................162
DTC Confirmation Procedure ................................162
Wiring Diagram - AT - PT/SEN .............................163
Diagnosis Procedure .............................................164
CONTROL UNIT (RAM), CONTROL UNIT
(ROM) ...............................................................
167
Description .......................................................... ..167
On Board Diagnosis Logic ....................................167
Possible Cause .....................................................167
DTC Confirmation Procedure ................................167
Diagnosis Procedure .............................................167
MAIN POWER SUPPLY AND GROUND CIR-
CUIT ..................................................................
168
Wiring Diagram - AT - MAIN ............................... ..168
Diagnosis Procedure .............................................169
TR SW, OD SW AND CLOSED THROTTLE,
WIDE OPEN THROTTLE POSITION SIGNAL
CIRCUIT ......................................................... ..
171
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
171
TCM Terminal and Reference Value .....................171
Diagnosis Procedure ........................................... ..171
Component Inspection ...........................................175
SHIFT POSITION INDICATOR CIRCUIT ........176
Description .............................................................176
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
176
Diagnosis Procedure .............................................176
TROUBLE DIAGNOSIS FOR SYMPTOMS ....177
Wiring Diagram - AT - NONDTC ...........................177
OD OFF Indicator Lamp Does Not Come On ........180
Engine Cannot Be Started in "P" and "N" Position ..182
In "P" Position, Vehicle Moves Forward or Back-
ward When Pushed ...............................................
183
In "N" Position, Vehicle Moves ..............................183
Large Shock "N" → "R" Position .......................... ..184
Vehicle Does Not Creep Backward in "R" Position ..185
Vehicle Does Not Creep Forward in "D", "2" or "1"
Position ................................................................ ..
186
Vehicle Cannot Be Started from D1 .......................187
A/T Does Not Shift: D1→ D2or Does Not Kick-
down: D
4→ D2 ..................................................... ..189
A/T Does Not Shift: D2→ D3 ................................ ..190
A/T Does Not Shift: D3→ D4 ................................ ..192
A/T Does Not Perform Lock-up ........................... ..193
A/T Does Not Hold Lock-up Condition ...................194
Lock-up Is Not Released .......................................195
Engine Speed Does Not Return to Idle (Light
Braking D
4→ D3) ................................................. ..196
A/T Does Not Shift: D4→ D3, When OD OFF ...... ..197
A/T Does Not Shift: D3→ 22, When Selector Lever
"D" → "2" Position ............................................... ..
198
A/T Does Not Shift: 22→ 11, When Selector Lever
"2" → "1" Position ................................................ ..
199
Vehicle Does Not Decelerate by Engine Brake ... ..201
TCM Self-Diagnosis Does Not Activate .................204
A/T SHIFT LOCK SYSTEM .............................206
Description .............................................................206
Shift Lock System Parts Location ..........................207
Wiring Diagram - AT - SHIFT ................................208
Diagnosis Procedure .............................................208
TRANSMISSION CONTROL MODULE ..........212
Removal and Installation .......................................212
SHIFT CONTROL SYSTEM ............................213
A/T Shift Selector Removal and Installation ........ ..213
A/T Shift Selector Disassembly and Assembly ......216
Shift Selector Handle Removal and Installation ....216
Adjustment of A/T Position ....................................217
Checking of A/T Position .......................................217
KEY INTERLOCK CABLE ..............................219
Removal and Installation .......................................219
ON-VEHICLE SERVICE ..................................222
Control Valve Assembly and Accumulators ...........222
Revision: May 2010 2011 Versa

A/T CONTROL SYSTEMAT-31
< SERVICE INFORMATION >
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CONTROL SYSTEM DIAGRAM
CAN CommunicationINFOID:0000000005928076
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-7,
"System Description".
Input/Output Signal of TCMINFOID:0000000005928077
JSDIA1518GB
Control itemLine
pressure control Veh icl e
speed
control Shift
control Lock-up
control Engine
brake
control Fail-safe
function Self-diag-
nostics
function
Input Accelerator pedal position signal
(*5)XXXXX(*3) XX
Output speed sensor X X X X X (*3) X X
Vehicle speed signal (*1) X (*1) X (*1) X (*1) X X
Closed throttle position signal
(*5)(*2) X (*2) X X X(*4) X
Wide open throttle position signal
(*5)(*2) X (*2) X (*4) X
Input speed sensor X XXX X
Engine speed signal XXX X
Transmission range sw itch XXXXX(*3) X(*4) X
Stop lamp switch signal
(*5)XX ( *4 ) X
A/T fluid temperature sensors
(*5)XXXX XX
Overdrive control switch signal
(*5)XXXX (*4) X
TCM power supply voltage signal X XX X
Revision: May 2010 2011 Versa

A/T CONTROL SYSTEMAT-35
< SERVICE INFORMATION >
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Lock-up Control System Diagram
Lock-up Released
In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by drain-
ing the torque converter clutch piston applying pressure and the torque converter clutch piston release pres-
sure is generated.
In this way, the torque converter clutch piston is not coupled.
Lock-up Applied
In the lock-up applied state, the torque converter clutch
control valve is set into the locked state by generating
the torque converter clutch piston applying pressure and t he torque converter clutch piston release pressure is
drained.
In this way, the torque converter clutch piston is pressed and coupled.
SMOOTH LOCK-UP CONTROL
When shifting from the lock-up released state to the lock-up applied state, the current output to the torque con-
verter clutch solenoid is controlled with the TCM. In this way, when shifting to the lock-up applied state, the
torque converter clutch is temporarily set to the half-clutched state to reduce the shock.
Half-clutched State
The current output from the TCM to the torque converte r clutch solenoid is varied to steadily increase the
torque converter clutch solenoid pressure.
In this way, the lock-up applying pressure gradually rises and while the torque converter clutch piston is put
into half-clutched status, the torque converter clutch piston applying pressure is increased and the coupling is
completed smoothly.
Engine Brake Control (Overrun Clutch Control)INFOID:0000000005928081
Forward one-way clutch is used to reduce shifting shoc ks in downshifting operations. This clutch transmits
engine torque to the wheels. However, drive force fr om the wheels is not transmitted to the engine because
the one-way clutch rotates idle. This means the engine brake is not effective.
The overrun clutch operates when the engine brake is needed.
SCIA5623E
Revision: May 2010 2011 Versa

ON BOARD DIAGNOSTIC (OBD) SYSTEMAT-41
< SERVICE INFORMATION >
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The OD OFF indicator lamp is located on the combination meter.
1. If the ignition switch stays ON after repair work, be su re to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Perform “TCM SELF-DIAGNOSTIC PR OCEDURE (No Tools)”. Refer to AT-82, "
Diagnosis Procedure
without CONSULT-III". (The engine warm-up step can be skipped when performing the diagnosis only to
erase the DTC.)
3. Perform “OBD-II SELF-DIAGNOSTIC PROCEDURE (No tools)”. Refer to EC-95, "
Diagnosis Description"
(HR16DE), EC-542, "Emission-related Diagnostic Information" (MR18DE).
Malfunction Indicator Lamp (MIL)INFOID:0000000005928088
DESCRIPTION
The MIL is located on the instrument panel.
1. The MIL will light up when the ignition switch is turned ON with-
out the engine running. This is a bulb check.
• If the MIL does not light up, refer to DI-21, "
Schematic", EC-
450, "Wiring Diagram" (HR16DE), EC-1033, "Wiring Diagram"
(MR18DE).
2. When the engine is start ed, the MIL should go off.
• If the MIL remains on, the on board diagnostic system has detected an engine system malfunction.
SEF217U
Revision: May 2010 2011 Versa

AT-50
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Circuit Diagram
INFOID:0000000005928093
7. Output speed sensor 8. Dropping resistor 9. TCM
10. Overdrive control switch
ABDWA0413GB
Revision: May 2010 2011 Versa

AT-88
< SERVICE INFORMATION >
U1000 CAN COMM CIRCUIT
Wiring Diagram - AT - CAN
INFOID:0000000005928111
TCM TERMINALS AND REFERENCE VALUES
Refer to AT-75, "TCM Terminal and Reference Value".
BCWA0648E
Revision: May 2010 2011 Versa