2008 NISSAN LATIO automatic transmission

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLECLClutch System
MTManual Transaxle
ATAutomatic Transaxle
CVTCVT
DDRIVELINE/AXLEFAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
STCSteering Control System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System (SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mirrors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
JAIR CONDITIONERMTCManual Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio Visual, Navigation & Telephone System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Elements
LMAINTENANCEMAMaintenance
Edition: May 2007
Revision: May 2007
Publication No. SM8E-1C11U0
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© 2007 NISSAN NORTH AMERICA, INC.
All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any
form, or by any means, electronic, mechanical, photo-copying, recording or otherwise, without the prior written permission
of Nissan North America Inc.
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AT-1
TRANSMISSION/TRANSAXLE
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SECTION AT
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AT
N
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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 .....................................................
7
Precaution .................................................................8
Service Notice or Precaution .....................................9
PREPARATION ..................................................10
Special Service Tool ...............................................10
Commercial Service Tool ........................................13
A/T FLUID ...........................................................15
Checking A/T Fluid ..................................................15
Changing A/T Fluid .................................................15
A/T Fluid Cooler Cleaning .......................................16
A/T CONTROL SYSTEM ....................................19
Cross-Sectional View ..............................................19
Shift Mechanism ......................................................19
TCM Function ..........................................................27
CAN Communication ...............................................28
Input/Output Signal of TCM .....................................28
Line Pressure Control .............................................29
Shift Control ............................................................30
Lock-up Control .......................................................31
Engine Brake Control (Overrun Clutch Control) ......32
Control Valve ...........................................................34
Centrifugal Cancel Mechanism ...............................34
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......36
Introduction .............................................................36
OBD-II Function for A/T System ..............................36
One or Two Trip Detection Logic of OBD-II .............36
OBD-II Diagnostic Trouble Code (DTC) ..................36
Malfunction Indicator Lamp (MIL) ............................38
TROUBLE DIAGNOSIS ....................................39
DTC Inspection Priority Chart ..................................39
Fail-Safe ..................................................................39
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
40
A/T Electrical Parts Location ...................................46
Circuit Diagram ........................................................47
Inspections Before Trouble Diagnosis .....................48
Road Test ................................................................52
Check Before Engine Is Started ..............................53
Check at Idle ............................................................53
Cruise Test - Part 1 .................................................55
Cruise Test - Part 2 .................................................58
Cruise Test - Part 3 .................................................59
Vehicle Speed at Which Gear Shifting Occurs ........61
Vehicle Speed at Which Lock-up Occurs/Releas-
es .............................................................................
61
Symptom Chart ........................................................61
TCM Terminal and Reference Value .......................71
CONSULT-III Function (A/T) ...................................73
Diagnosis Procedure without CONSULT-III ............78
DTC U1000 CAN COMMUNICATION LINE .....83
Description ...............................................................83
On Board Diagnosis Logic .......................................83
Possible Cause ........................................................83
DTC Confirmation Procedure ..................................83
Wiring Diagram - AT - CAN .....................................84
Diagnosis Procedure ...............................................85
DTC P0705 PARK/NEUTRAL POSITION
(PNP) SWITCH ..................................................
86
Description ...............................................................86
CONSULT-III Reference Value in Data Monitor
Mode ........................................................................
86
On Board Diagnosis Logic .......................................86
Possible Cause ........................................................86

A/T CONTROL SYSTEM
AT-21
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• *1: Operates when OD OFF. (OD OFF indicator lamp is on.)
• *2: Oil pressure is applied to both 2nd “apply” side and 3rd “release” side of band servo piston. However, brake band does not contract
because oil pressure area on the “release” side is greater than that on the “apply” side.
• *3: Oil pressure is applied to 4th “apply” side on condition *2 above, and brake band contracts.
• *4: A/T will not shift to 4th when OD OFF. (OD OFF indicator lamp is on.)
• : Operates.
• A: Operates when throttle opening is less than specification**, activating engine brake.
• B: Operates during “progressive” acceleration.
• C: Operates but does not affect power transmission.
• D: Operates when throttle opening is less than specification**, but does not affect engine brake.
- **: Overrun clutch remains in engaged condition when throttle opening is less than 1/16.
POWER TRANSMISSION
“N” and “P” Positions
• “N” position
Power from the input shaft is not transmitted to the output shaft because the clutches do not operate.
• “P” position
Similar to the “N” position, the clutches do not operate. The parking pawl engages with the parking gear to
mechanically hold the output shaft so that the power train is locked.
“11” Position
2nd *1A BAutomatic
shift
3rd *1A *2C C B
*11 ⇔ 2 ⇔ 3
⇔ 4
4th C *3C C
21stBB
Automatic
shift
1 ⇔ 2 ⇐ 3 2ndB
3rd *2C C B
11stBB
Locks (held
stationary)
in 1st speed
1 ⇐ 2 ⇐ 3 2ndB
3rd *2C C B Shift posi-
tionR/C
5H/C
6F/C
15O/C
17Band servo
F/O.C
16L/O.C
18L&R/B
19Lock-
upRemarks
2nd
apply3rd re-
lease4th ap-
ply
SAT991I

SERVICE DATA AND SPECIFICATIONS (SDS)
AT-341
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SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000001703396
*: Refer to MA-10.
Vehicle Speed at Which Gear Shifting OccursINFOID:0000000001703397
• At half throttle, the accelerator opening is 4/8 of the full opening.
Vehicle Speed at When Lock-up Occurs/ReleasesINFOID:0000000001703398
Stall SpeedINFOID:0000000001703399
Line PressureINFOID:0000000001703400
Adjusting shims, Needle Bearings, Thrust Washers and Snap RingsINFOID:0000000001703401
NOTE:
EngineMR18DE
Automatic transaxle model RE4F03B
Automatic transaxle assembly Model code number 3CX0D
Transaxle gear ratio1st 2.861
2nd 1.562
3rd 1.000
4th 0.697
Reverse 2.310
Final drive 4.072
Recommended fluidGenuine NISSAN Matic D ATF (Continental U.S. and Alaska) or
Canada NISSAN Automatic Transmission Fluid*
Fluid capacity [ (US qt, Imp qt)]7.9 (8-3/8, 7)
Throttle positionVehicle speed km/h (MPH)
D1 → D2D2 → D3D3 → D4D4 → D3D3 → D2D2 → D1
Full throttle51 - 59
(32 - 37)97 - 105
(60 - 65)154 - 162
(96 - 101)150 - 158
(93 - 98)87 - 95
(54 - 59)40 - 48
(25 - 30)
Half throttle34 - 42
(21 - 26)62 - 70
(39 - 43)124 - 132
(77 - 82)69 - 77
(43 - 48)36 - 44
(22 - 27)19 - 27
(12 - 17)
Throttle position Selector lever positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
2.0/8“D” position 86 - 94 (53 - 58) 59 - 67 (37 - 42)
“D” position (OD OFF) 86 - 94 (53 - 58) 83 - 91 (52 - 57)
Stall revolution (rpm)2,310 - 2,770
Engine speedLine pressure kPa (kg/cm2, psi)
“D”, “2” and “1” positions “R” position
Idle speed 500 (5.1, 73) 778 (7.9, 113)
Stall speed 1,173 (12.0, 170) 1,825 (18.6, 265)

PRECAUTIONS
CVT-11
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CVT
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•Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly or
not. CVT-45, "
TCM Terminal and Reference Value".
•After performing each TROUBLE DIAGNOSIS, perform “DTC
Confirmation Procedure”.
If the repair is completed the DTC should not be displayed in
the “DTC Confirmation Procedure”.
• Always use the specified brand of CVT fluid. Refer to MA-10, "
Flu-
ids and Lubricants".
• Use lint-free paper, not cloth rags, during work.
• After replacing the CVT fluid, dispose of the waste oil using the
methods prescribed by law, ordinance, etc.
Service Notice or PrecautionINFOID:0000000001703430
CVT FLUID COOLER SERVICE
If CVT fluid contains friction material (clutches, brakes, etc.), or if an CVT is replaced, inspect and clean the
CVT fluid cooler mounted in the radiator or replace the radiator. Flush cooler lines using cleaning solvent and
compressed air after repair. For CVT fluid cooler cleaning procedure, refer to CVT-14, "
CVT Fluid Cooler
Cleaning". For radiator replacement, refer to CO-11.
OBD-II SELF-DIAGNOSIS
• CVT self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the malfunction indicator lamp (MIL). Refer to the table on CVT-47, "
CONSULT-III
Function (TRANSMISSION)" for the indicator used to display each self-diagnostic result.
• The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure on CVT-26, "
OBD-II Diagnostic Trouble Code (DTC)" to complete the
repair and avoid unnecessary blinking of the MIL.
For details of OBD-II, refer to EC-46
.
•Certain systems and components, especially those related to OBD, may use the new style slide-lock-
ing type harness connector. For description and how to disconnect, refer to PG-65
.
MEF040DA
SEF217U

CVT-26
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
IntroductionINFOID:0000000001703446
The CVT system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD-II) performed by the TCM in combination
with the ECM. The malfunction is indicated by the MIL (malfunction indicator lamp) and is stored as a DTC in
the ECM memory, and the TCM memory.
The second is the TCM original self-diagnosis performed by the TCM. The malfunction is stored in the TCM
memory. The detected items are overlapped with OBD-II self-diagnostic items. For detail, refer to CVT-47,
"CONSULT-III Function (TRANSMISSION)".
OBD-II Function for CVT SystemINFOID:0000000001703447
The ECM provides emission-related on board diagnostic (OBD-II) functions for the CVT system. One function
is to receive a signal from the TCM used with OBD-related parts of the CVT system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MIL (malfunction indicator lamp) on the instrument panel. Sensors, switches
and solenoid valves are used as sensing elements.
The MIL automatically illuminates in One or Two Trip Detection Logic when a malfunction is sensed in relation
to CVT system parts.
One or Two Trip Detection Logic of OBD-IIINFOID:0000000001703448
ONE TRIP DETECTION LOGIC
If a malfunction is sensed during the first test drive, the MIL will illuminate and the malfunction will be stored in
the ECM memory as a DTC. The TCM is not provided with such a memory function.
TWO TRIP DETECTION LOGIC
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — 1st trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MIL will illuminate. — 2nd trip
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD-II Diagnostic Trouble Code (DTC)INFOID:0000000001703449
HOW TO READ DTC AND 1ST TRIP DTC
DTC and 1st trip DTC can be read by the following methods.
( with CONSULT-III or GST) CONSULT-III or GST (Generic Scan Tool) Examples: P0705, P0720 etc.
These DTC are prescribed by SAE J2012.
(CONSULT-III also displays the malfunctioning component or system.)
•1st trip DTC No. is the same as DTC No.
•Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or
occurred in the past and returned to normal.
CONSULT-III can identify them as shown below, therefore, CONSULT-III (if available) is recom-
mended.
DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode for “ENGINE” with
CONSULT-III. Time data indicates how many times the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be “0”.
If a 1st trip DTC is stored in the ECM, the time data will be “1t”.
Freeze Frame Data and 1st Trip Freeze Frame Data

PRECAUTIONS
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General PrecautionINFOID:0000000001702424
• Do not operate the engine for an extended period of time without
proper exhaust ventilation.
Keep the work area well ventilated and free of any flammable
materials. Special care should be taken when handling any flam-
mable or poisonous materials, such as gasoline, refrigerant gas,
etc. When working in a pit or other enclosed area, be sure to prop-
erly ventilate the area before working with hazardous materials.
Do not smoke while working on the vehicle.
• Before jacking up the vehicle, apply wheel chocks or other tire
blocks to the wheels to prevent the vehicle from moving. After jack-
ing up the vehicle, support the vehicle weight with safety stands at
the points designated for proper lifting before working on the vehi-
cle.
These operations should be done on a level surface.
• When removing a heavy component such as the engine or tran-
saxle/transmission, be careful not to lose your balance and drop
them. Also, do not allow them to strike adjacent parts, especially
the brake tubes and master cylinder.
• Before starting repairs which do not require battery power:
Turn off ignition switch.
Disconnect the negative battery terminal.
• If the battery terminals are disconnected, recorded memory of
radio and each control unit is erased.
• Battery posts, terminals and related accessories contain lead and
lead compounds. Wash hands after handling.
• To prevent serious burns:
Avoid contact with hot metal parts.
Do not remove the radiator cap when the engine is hot.
• Dispose of or recycle drained oil or the solvent used for cleaning
parts in an appropriate manner.
• Do not attempt to top off the fuel tank after the fuel pump nozzle
shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray
and possibly a fire.
• Clean all disassembled parts in the designated liquid or solvent
prior to inspection or assembly.
• Replace oil seals, gaskets, packings, O-rings, locking washers,
cotter pins, self-locking nuts, etc. with new ones.
• Replace inner and outer races of tapered roller bearings and needle bearings as a set.
• Arrange the disassembled parts in accordance with their assembled locations and sequence.
• Do not touch the terminals of electrical components which use microcomputers (such as ECM).
Static electricity may damage internal electronic components.
• After disconnecting vacuum or air hoses, attach a tag to indicate the proper connection.
• Use only the fluids and lubricants specified in this manual.
• Use approved bonding agent, sealants or their equivalents when required.
SGI285
SGI231
SEF289H
SGI233

HOW TO USE THIS MANUAL
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PHOW TO USE THIS MANUAL
DescriptionINFOID:0000000001702431
This volume explains “Removal, Disassembly, Installation, Inspection and Adjustment” and “Trouble Diag-
noses”.
Te r m sINFOID:0000000001702432
• The captions WARNING and CAUTION warn you of steps that must be followed to prevent personal injury
and/or damage to some part of the vehicle.
WARNING indicates the possibility of personal injury if instructions are not followed.
CAUTION indicates the possibility of component damage if instructions are not followed.
BOLD TYPED STATEMENTS except WARNING and CAUTION give you helpful information.
Standard value:Tolerance at inspection and adjustment.
Limit value:The maximum or minimum limit value that should not be exceeded at inspection and adjustment.
UnitsINFOID:0000000001702433
• The UNITS given in this manual are primarily expressed as the SI UNIT (International System of Unit), and
alternatively expressed in the metric system and in the yard/pound system.
Also with regard to tightening torque of bolts and nuts, there are descriptions both about range and about the
standard tightening torque.
“Example”
Range
Standard
ContentsINFOID:0000000001702434
•ALPHABETICAL INDEX is provided at the end of this manual so that you can rapidly find the item and page
you are searching for.
•A QUICK REFERENCE INDEX, a black tab (e.g. ) is provided on the first page. You can quickly find the
first page of each section by matching it to the section's black tab.
•THE CONTENTS are listed on the first page of each section.
•THE TITLE is indicated on the upper portion of each page and shows the part or system.
•THE PAGE NUMBER of each section consists of two or three letters which designate the particular section
and a number (e.g. “BR-5”).
•THE SMALL ILLUSTRATIONS show the important steps such as inspection, use of special tools, knacks of
work and hidden or tricky steps which are not shown in the previous large illustrations.
Assembly, inspection and adjustment procedures for the complicated units such as the automatic transaxle
or transmission, etc. are presented in a step-by-step format where necessary. Outer Socket Lock Nut : 59 - 78 N·m (6.0 - 8.0 kg-m, 43 - 58 ft-lb)
Drive Shaft Installation Bolt: 44.3 N·m (4.5 kg-m, 33 ft-lb)