wiring NISSAN LATIO 2011 Service Repair Manual

ACC-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006405207
The Supplemental Restraint System such as “A IR 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
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 w hether 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.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005928708
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: May 2010 2011 Versa

ACS-2
< SERVICE INFORMATION >
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
SERVICE INFORMATION
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005929265
The Supplemental Restraint System such as “A IR 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
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 w hether 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.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
DescriptionINFOID:0000000005929266
Regarding the information for ASCD system, refer to EC-523, "System Description".
Revision: May 2010 2011 Versa

AT-1
TRANSMISSION/TRANSAXLE
DE
F
G H
I
J
K L
M
SECTION AT
A
B
AT
N
O P
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
DE
F
G H
I
J
K L
M A
B
AT
N
O
P
N
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

PRECAUTIONSAT-7
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006413332
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 severi ty 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
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 w hether 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.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005928064
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NVIS /IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
Revision: May 2010 2011 Versa

A/T CONTROL SYSTEMAT-31
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
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

ON BOARD DIAGNOSTIC (OBD) SYSTEMAT-41
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
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

TROUBLE DIAGNOSISAT-43
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
z : Solenoid ON
× : Solenoid OFF
–: Non-standard condition
Line Pressure Solenoid Valve
If non-standard solenoid signal is sent to TCM, line pre ssure solenoid valve is turned OFF to achieve maxi-
mum oil pressure.
Torque Converter Clutch Solenoid Valve
If non-standard solenoid signal is sent to TCM, torque conv erter clutch solenoid valve is turned OFF to release
lock-up.
Overrun Clutch Solenoid Valve
If non-standard solenoid signal is sent to TCM, overr un clutch solenoid valve is turned OFF to engage overrun
clutch. This will result in more effective engine brake during deceleration.
How to Perform Trouble Diagnosis for Quick and Accurate RepairINFOID:0000000005928091
INTRODUCTION
The TCM receives a signal from the vehicle speed sensor, accelera-
tor pedal position sensor or transmission range switch and provides
shift control or lock-up control via A/T solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used wit h the OBD-related parts of the
A/T system for malfunction-diagnostic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the A/T system. T he A/T system must be in good oper-
ating condition and be free of valve seizure, solenoid valve malfunc-
tion, etc.
It is much more difficult to diagnose a malfunction that occurs intermittently rather than continuously. Most
intermittent malfunctions are caused by poor electric c onnections or improper wiring. In this case, careful
checking of suspected circuits may hel p prevent the replacement of good parts.
Shift positionNormal
Malfunction in solenoid
valve A Malfunction in solenoid
valve B Malfunction in solenoid
valves A and B
A BGearABGearABGearABGear
“D” position zz
1st –z→×
3rd z
→× –
3rd ––
3rd
×
z2nd – z→× ×–––
×× 3rd – x ×–––
z ×4th – x z→× –––
“2” position zz
1st –z→× z→× –––
× z2nd – z→× ×–––
×× 3rd – x ×–––
“1” position zz
1st –z→× z→× –––
× z2nd – z→× ×–––
×× 3rd – x ×–––
SAT631IA
Revision: May 2010 2011 Versa

U1000 CAN COMM CIRCUITAT-87
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000005928107
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 communica tion speed and excellent malfunction detection ability.
Many electronic 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 con-
nected with 2 communication lines (CAN H line, CAN L li ne) allowing a high rate of information transmission
with less wiring. Each control unit transmits/recei ves data but selectively reads required data only.
On Board Diagnosis LogicINFOID:0000000005928108
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “U1000 CAN COMM CIRCUIT” wit h CONSULT-III or 12th judgement flicker without
CONSULT-III is detected when TCM cannot communicate to other control units.
Possible CauseINFOID:0000000005928109
Harness or connector
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005928110
CAUTION:
If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Touch “START”.
4. Wait at least 6 seconds or start engine and wait for at least 6 seconds.
5. If DTC is detected, go to AT-89, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
WITHOUT CONSULT-III
1. Turn ignition switch ON.
2. Wait at least 6 seconds or start engine and wait at least 6 seconds.
3. Perform self-diagnosis. Refer to AT-82, "
Diagnosis Procedure without CONSULT-III".
4. If DTC is detected, go to AT-89, "
Diagnosis Procedure".
Revision: May 2010 2011 Versa