2009 NISSAN LATIO wiring

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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 fo r 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 (Ove rrun 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 Refere nce Value .......................77
CONSULT-III Function (TRANSMISSION) .......... ....79
Diagnosis Procedure withou t CONSULT-III ............83
DTC U1000 CAN COMMUNICATION LINE ..... 88
Description ........................................................... ....88
On Board Diagnosis Logic ................................... ....88
Possible Cause .................................................... ....88
DTC Confirmation Procedure .............................. ....88
Wiring Diagram - AT - CAN ................................. ....89
Diagnosis Procedure ........................................... ....90
DTC P0705 PARK/NEUTRAL POSITION
(PNP) SWITCH .................................................. 91
Description ........................................................... ....91
CONSULT-III Reference Va lue in Data Monitor
Mode .................................................................... ....
91
On Board Diagnosis Logic ................................... ....91
Possible Cause .................................................... ....91

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Wiring Diagram - AT -
SSV/B ................................
145
Diagnosis Procedure ........................................... ..146
Component Inspection ........................................ ..147
DTC P1760 OVERRUN CLUTCH SOLENOID
VALVE ............................................................ ..149
Description .......................................................... ..149
CONSULT-III Refe rence Value in Data Monitor
Mode ................................................................... ..
149
On Board Diagnosis Logic .................................. ..149
Possible Cause ................................................... ..149
DTC Confirmation Procedure .............................. ..149
Wiring Diagram - AT - OVRCSV ......................... ..150
Diagnosis Procedure ........................................... ..151
Component Inspection ........................................ ..152
DTC VEHICLE SPEED SENSOR MTR .......... ..154
Description .......................................................... ..154
CONSULT-III Refe rence Value in Data Monitor
Mode ................................................................... ..
154
On Board Diagnosis Logic .................................. ..154
Possible Cause ................................................... ..154
DTC Confirmation Procedure .............................. ..154
Wiring Diagram - AT - VSSMTR ...........................155
Diagnosis Procedure ........................................... ..156
DTC BATT/FLUID TEMP SEN (A/T FLUID
TEMP SENSOR CIRCUIT AND TCM POWER
SOURCE) ....................................................... ..
157
Description .......................................................... ..157
CONSULT-III Refe rence Value in Data Monitor
Mode ................................................................... ..
157
On Board Diagnosis Logic .................................. ..157
Possible Cause ................................................... ..157
DTC Confirmation Procedure .............................. ..157
Wiring Diagram - AT - BA/FTS ............................ ..158
Diagnosis Procedure ........................................... ..159
Component Inspection ........................................ ..161
DTC TURBINE REVOLUTION SENSOR ....... ..163
Description .......................................................... ..163
CONSULT-III Refe rence Value in Data Monitor
Mode ................................................................... ..
163
On Board Diagnosis Logic .................................. ..163
Possible Cause ................................................... ..163
DTC Confirmation Procedure .............................. ..163
Wiring Diagram - AT - PT/SEN ........................... ..164
Diagnosis Procedure ........................................... ..165
CONTROL UNIT (RAM), CONTROL UNIT
(ROM) ............................................................. ..
168
Description .......................................................... ..168
On Board Diagnosis Logic .................................. ..168
Possible Cause ................................................... ..168
DTC Confirmation Procedure .............................. ..168
Diagnosis Procedure ........................................... ..168
MAIN POWER SUPPLY AND GROUND CIR-
CUIT ................................................................ ..169
Wiring Diagram - AT - MAIN ............................... ..169 Diagnosis Procedure ...........................................
..170
PNP, OD SWITCH AND CLOSED THROT-
TLE, WIDE OPEN THROTTLE POSITION
SIGNAL CIRCUI T ............................................ 172
CONSULT-III Reference Va lue in Data Monitor
Mode .................................................................... ..
172
TCM Terminal and Refere nce Value .....................172
Diagnosis Procedure ........................................... ..172
Component Inspection ......................................... ..176
SHIFT POSITION INDICATOR CIRCUIT ........ 177
Description ........................................................... ..177
CONSULT-III Reference Va lue in Data Monitor
Mode .................................................................... ..
177
Diagnosis Procedure ........................................... ..177
TROUBLE DIAGNOSIS FOR SYMPTOMS .... 178
Wiring Diagram - AT - NONDTC ......................... ..178
OD OFF Indicator Lamp Does Not Come On ...... ..181
Engine Cannot Be Started in "P" and "N" Position ..183
In "P" Position, Vehicle Moves Forward or Back-
ward When Pushed ............................................. ..
184
In "N" Position, Vehicle Moves ............................ ..184
Large Shock "N" → "R" Position .......................... ..185
Vehicle Does Not Creep Backward in "R" Position ..186
Vehicle Does Not Creep Forw ard in "D", "2" or "1"
Position ................................................................ ..
187
Vehicle Cannot Be Started from D 1 ..................... ..188
A/T Does Not Shift: D 1→ D 2or Does Not Kick-
down: D 4→ D 2 ..................................................... ..190
A/T Does Not Shift: D 2→ D 3 ................................ ..192
A/T Does Not Shift: D 3→ D 4 ................................ ..193
A/T Does Not Perform Lock-up ........................... ..194
A/T Does Not Hold Lock-up Condition ................. ..195
Lock-up Is Not Released ..................................... ..196
Engine Speed Does Not Return to Idle (Light
Braking D 4→ D 3) ................................................. ..197
A/T Does Not Shift: D 4→ D 3, When OD OFF ...... ..198
A/T Does Not Shift: D 3→ 22, When Selector Lever
"D" → "2" Position ............................................... ..
199
A/T Does Not Shift: 2 2→ 11, When Selector Lever
"2" → "1" Position ................................................ ..
200
Vehicle Does Not Decelerate by Engine Brake ... ..202
TCM Self-Diagnosis Does Not Activate ............... ..205
A/T SHIFT LOCK SYSTEM ............................. 207
Description ........................................................... ..207
Shift Lock System Parts Location ........................ ..207
Wiring Diagram - AT - SHIFT .............................. ..208
Diagnosis Procedure ........................................... ..208
TRANSMISSION CONTROL MODULE .......... 211
Removal and Installation ..................................... ..211
SHIFT CONTROL SYSTEM ............................ 212
Control Device Removal an d Installation ...............212
Control Device Disassembly and Assembly ..........215
Selector Lever Knob Remo val and Installation ......215
Adjustment of A/T Position .................................. ..216

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PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000004803451
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 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.
• 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 Wh eel Rotation After Battery Disconnect
INFOID:0000000004305289
NOTE:
• This Procedure is applied only to models with Intell igent 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 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.
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.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.

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CONTROL SYSTEM DIAGRAM
CAN Communication INFOID:0000000004305301
SYSTEM DESCRIPTION CAN (Controller Area Network) is a serial communication li ne 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-8," System Description " .
Input/Output Signal of TCM INFOID:0000000004305302

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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-83, " Diagnosis Procedure
without CONSULT-III " . (The engine warm-up step can be ski
pped when performing the diagnosis only to
erase the DTC.)
3. Perform “OBD-II SELF-DIAGNOSTIC PROCEDURE (No tools)”. Refer to EC-90, " Diagnosis Description "
(HR16DE),
EC-542, " Emission-related Diagnostic Information " (MR Type 1) or
EC-1052, " Emission-
related Diagnostic Information " (MR Type 2).
Malfunction Indicator Lamp (MIL) INFOID:0000000004305313
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-20, " Schematic " ,
EC- 447, " Wiring Diagram " (HR16DE),
EC-1010, " Wiring Diagram "
(MR Type 1) or
EC-1532, " Wiring Diagram " (MR Type 2).
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.

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: 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 Repair INFOID:0000000004305316
INTRODUCTION The TCM receives a signal from the vehicle speed sensor, accelera-
tor pedal position sensor or PNP 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 t hat 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 position
Normal
Malfunction in solenoid
valve A Malfunction in solenoid
valve B Malfunction in solenoid
valves A and B
A B Gear A B Gear A B Gear A B Gear
“D” position z z
1st –z→×
3rd z
→× –
3rd – –
3rd
×
z2nd – z→× × – – –
× × 3rd – x ×– – –
z ×4th – x z→× – – –
“2” position z z
1st –z→× z→× – – –
× z2nd – z→× × – – –
× × 3rd – x ×– – –
“1” position z z
1st –z→× z→× – – –
× z2nd – z→× × – – –
× × 3rd – x ×– – –

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Wiring Diagram - AT - CAN
INFOID:0000000004305336
TCM TERMINALS AND REFERENCE VALUES Refer to AT-77, " TCM Terminal and Reference Value " .

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Wiring Diagram - AT - FTS
INFOID:0000000004305351
TCM TERMINALS AND REFERENCE VALUES Refer to AT-77, " TCM Terminal and Reference Value " .
Diagnosis Procedure INFOID:0000000004305352