2009 NISSAN LATIO service

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NISSAN LATIO 2009 Service Repair Manual ACC
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CONTENTS
ACCELERATOR CONTROL SYSTEM
SERVICE INFORMATION .. ..........................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restrai

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NISSAN LATIO 2009 Service Repair Manual ACS
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CONTENTS
AUTO CRUISE CONTROL SYSTEM
SERVICE INFORMATION .. ..........................2
AUTOMATIC SPEED CONTROL DEVICE
(ASCD) ........................................................... ..

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NISSAN LATIO 2009 Service Repair Manual AT
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CONTENTS
AUTOMATIC TRANSAXLE
SERVICE INFORMATION .. ..........................5
INDEX FOR DTC ............................................ .....5
Alphabetical Index .......................

AT
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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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NISSAN LATIO 2009 Service Repair Manual AT
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SERVICE INFORMATION
INDEX FOR DTC
Alphabetical Index INFOID:0000000004305286
NOTE:
If DTC “CAN COMM CIRCUIT” is di splayed with other DTCs, first perform the trouble diagnos

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NISSAN LATIO 2009 Service Repair Manual AT
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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�

AT
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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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NISSAN LATIO 2009 Service Repair Manual AT
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• The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper as

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• The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs
and small parts from becoming scattered or lost.
• Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
• Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings and
seals, or hold bearings and washers in pl ace during assembly. Do not use grease.
• Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
• Clean or replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer. Refer to AT-18, " A/T Fluid Cooler Cleaning " .
• After overhaul, refill the A/T with new ATF.
• When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque con- verter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer to
AT-17, " Changing A/T Fluid " ,
AT-17, " Checking A/T Fluid " .
Service Notice or Precaution INFOID:0000000004305292
ATF COOLER SERVICE If A/T fluid contains frictional material (clutches, bands, etc.), or if an A/T is repaired, overhauled, or replaced,
inspect and clean the A/T oil cooler mounted in the radiator or replace the radiator. Flush cooler lines using
cleaning solvent and compressed air after repair. Check Serv ice Bulletins for latest A/T oil cooler cleaning pro-
cedure. For radiator replacement, refer to CO-16, " Removal and Installation " (HR16DE engine models),
CO-38, " Removal and Installation " (MR18DE engine models).
TORQUE CONVERTER SERVICE The torque converter should be replaced under any of the following conditions:
• External leaks in the hub weld area.
• Converter hub is scored or damaged.
• Converter pilot is broken, damaged or fits poorly into crankshaft.
• Steel particles are found after flushing the cooler and cooler lines.
• Pump is damaged or steel particles are found in the converter.
• Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
• Converter is contaminated with engi ne coolant containing antifreeze.
• Internal malfunction of stator roller clutch.
• Heavy clutch debris due to overheating (blue converter).
• Steel particles or clutch lining material found in flui d filter or on magnet when no internal parts in unit are
worn or damaged — indicates that lining material came from converter.
The torque converter should not be replaced if:
• The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
• The threads in one or more of the converter bolt holes are damaged.
• A/T malfunction did not display evidence of damaged or worn internal parts, steel particles or clutch plate lin-
ing material in unit and inside the fluid filter.
• Vehicle has been exposed to high mileage (only). The e xception may be where the torque converter clutch
dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic, such as
taxi, delivery or police use.
OBD-II SELF-DIAGNOSIS • A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through the blinking pattern of the OD OFF indicator lamp or the malfunction indicator lamp (MIL). Refer to the table
on AT-83, " Diagnosis Procedure without CONSULT-III " for the indicator used to display each self-diagnostic
result.
• The self-diagnostic results indicated by the MIL ar e automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure “HOW TO ERASE DTC” on AT-39, " OBD-II Diagnostic Trouble Code
(DTC) " to complete the repair and avo
id unnecessary blinking of the MIL.
• The following self-diagnostic items can be detected us ing ECM self-diagnostic results mode* only when the
OD OFF indicator lamp does not indicate any malfunctions.
- PNP switch
- A/T 1st, 2nd, 3rd, or 4th gear function
*: For details of OBD-II, refer to AT-39 .

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NISSAN LATIO 2009 Service Repair Manual AT
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PREPARATION
Special Service Tool INFOID:0000000004305293
The actual shapes of Kent-Moore tools may differ fr om those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
T

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NISSAN LATIO 2009 Service Repair Manual Checking A/T Fluid " .
A/T Fluid Cooler Cleaning INFOID:0000000004305297
Whenever the A/T is repaired, overhauled, or replaced, the A/T fluid cooler mounted in the radiator must be
i

Checking A/T Fluid " .
A/T Fluid Cooler Cleaning INFOID:0000000004305297
Whenever the A/T is repaired, overhauled, or replaced, the A/T fluid cooler mounted in the radiator must be
inspected and cleaned.
Metal debris and friction material, if present, can becom e trapped in the A/T fluid cooler. This debris can con-
taminate the newly serviced A/T or, in severe cases, can bloc k or restrict the flow of A/T fluid. In either case,
malfunction of the newly serviced A/T may result.
Debris, if present, may build up as A/T fluid enters the c ooler inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.
A/T FLUID COOLER CLEANING PROCEDURE
1. Identify the A/T inlet and outlet fluid cooler hoses.
2. Position an oil pan under the A/T inlet and outlet fluid cooler hoses.
3. Disconnect the A/T fluid cooler inlet and outlet rubber hoses from the steel cooler tubes or bypass valve.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
4. Allow any A/T fluid that remains in the cooler hoses to drain into
the oil pan.
5. Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
• Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner.
• Spray Transmission Cooler Cleaner only with adequate
ventilation.
• Avoid contact with eyes and skin.
• Do not breathe vapors or spray mist.
6. Hold the hose and can as high as possible and spray Transmis- sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until A/T fluid flows out of t he cooler inlet hose for 5 seconds.
7. Insert the tip of an air gun into the end of the cooler outlet hose.
8. Wrap a shop rag around the air gun tip and end of cooler outlet hose.
9. Blow compressed air regulated to 5 - 9 kg/cm 2
(71 - 128 psi) through the cooler outlet hose for 10 seconds
to force out any remaining A/T fluid.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connec t the A/T fluid cooler steel lines to the A/T.
12. Remove the banjo bolts. Fluid grade and capacity: Refer to
MA-14 .
SCIA5630E

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