2001 NISSAN ALMERA service

AUTOMATIC TRANSAXLE
SECTION
AT
CONTENTS
EURO-OBD
TROUBLE DIAGNOSIS - INDEX....................................5
Alphabetical & P No. Index for DTC ...........................5
PRECAUTIONS...............................................................7
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............7
Precautions for On Board Diagnostic (EURO-
OBD) System of A/T and Engine - Euro-OBD - ..........7
Precautions ..................................................................7
Service Notice or Precautions .....................................9
Wiring Diagrams and Trouble Diagnosis ...................10
PREPARATION............................................................. 11
Special Service Tools ................................................ 11
Commercial Service Tools .........................................13
A/T FLUID......................................................................15
Checking A/T Fluid ....................................................15
Changing A/T Fluid ....................................................15
OVERALL SYSTEM......................................................16
A/T Electrical Parts Location .....................................16
Circuit Diagram ..........................................................17
Cross-sectional View - 3AX00, 3AX01, 3AX19,
3AX63 and 3AX64 models ........................................19
Cross-sectional View - 3AX10 and 3AX18
models .......................................................................20
Hydraulic Control Circuit ............................................21
Shift Mechanism ........................................................22
Control System ..........................................................31
Control Mechanism ....................................................32
Control Valve .............................................................37
EXCEPT FOR EURO-OBD
ON BOARD DIAGNOSTIC............................................39
CONSULT-II ...............................................................39
Diagnostic Procedure Without CONSULT-II ..............44EURO-OBD
ON BOARD DIAGNOSTIC SYSTEM............................50
Introduction ................................................................50
EURO-OBD Function for A/T System .......................50
One or Two Trip Detection Logic of EURO-OBD ......50
EURO-OBD Diagnostic Trouble Code (DTC)............50
Malfunction Indicator (MI) ..........................................54
CONSULT-II ...............................................................54
Diagnostic Procedure Without CONSULT-II ..............63
EXCEPT FOR EURO-OBD
TROUBLE DIAGNOSIS -...............................................69
Introduction ................................................................69
Work Flow ..................................................................73
EURO-OBD
TROUBLE DIAGNOSIS - INTRODUCTION..................74
Introduction ................................................................74
Work Flow ..................................................................78
TROUBLE DIAGNOSIS - BASIC INSPECTION...........80
A/T Fluid Check .........................................................80
Stall Test ....................................................................80
Line Pressure Test .....................................................84
Road Test...................................................................85
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................105
Symptom Chart ........................................................105
TCM Terminals and Reference Value...................... 118
TROUBLE DIAGNOSIS FOR POWER SUPPLY........123
Wiring Diagram - AT - MAIN ....................................123
Diagnostic Procedure ..............................................124
EXCEPT FOR EURO-OBD
VEHICLE SPEED SENSOR.A/T..................................126

Component Inspection .............................................251
DTC P0755 SHIFT SOLENOID VALVE B..................252
Description ...............................................................252
Wiring Diagram - AT - SSV/B ..................................254
Diagnostic Procedure ..............................................255
Component Inspection .............................................257
DTC P1705 THROTTLE POSITION SENSOR...........258
Description ...............................................................258
Wiring Diagram - AT - TPS ......................................261
Diagnostic Procedure ..............................................263
Component Inspection .............................................267
DTC P1760 OVERRUN CLUTCH SOLENOID
VALVE..........................................................................268
Description ...............................................................268
Wiring Diagram - AT - OVRCSV..............................270
Diagnostic Procedure ..............................................271
Component Inspection .............................................273
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE)....274
Description ...............................................................274
Wiring Diagram - AT - BA/FTS ................................276
Diagnostic Procedure ..............................................277
Component Inspection .............................................280
DTC VHCL SPEED SEN.MTR VEHICLE SPEED
SENSOR.MTR..............................................................281
Description ...............................................................281
Wiring Diagram - AT - VSSMTR ..............................283
Diagnostic Procedure ..............................................285
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)...........................................................................286
Description ...............................................................286
Diagnostic Procedure ..............................................286
DTC CONTROL UNIT (EEP ROM).............................288
Description ...............................................................288
Diagnostic Procedure ..............................................289
TROUBLE DIAGNOSES FOR SYMPTOMS...............290
Wiring Diagram - AT - NONDTC/General and
Except for Euro-OBD ...............................................290
Wiring Diagram - AT - NONDTC/EURO-OBD .........292
1. O/D OFF Indicator Lamp Does Not Come On....296
2. Engine Cannot Be Started In²P²and²N²
Position ....................................................................299
3. In²P²Position, Vehicle Moves Forward Or
Backward When Pushed .........................................300
4. In²N²Position, Vehicle Moves ...........................301
5. Large Shock.²N²->²R²Position .......................303
6. Vehicle Does Not Creep Backward In²R²
Position ....................................................................305
7. Vehicle Does Not Creep Forward In²D²,²2²
Or²1²Position .........................................................3088. Vehicle Cannot Be Started From D
1................... 311
9. A/T Does Not Shift: D
1-> D2Or Does Not
Kickdown: D
4-> D2..................................................314
10. A/T Does Not Shift: D
2-> D3.............................317
11. A/T Does Not Shift: D
3-> D4.............................320
12. A/T Does Not Perform Lock-up .........................323
13. A/T Does Not Hold Lock-up Condition ..............325
14. Lock-up Is Not Released ...................................327
15. Engine Speed Does Not Return To Idle (Light
Braking D
4-> D3).....................................................328
16. Vehicle Does Not Start From D
1.......................330
17. A/T Does Not Shift: D
4-> D3, When
Overdrive Control Switch²ON²->²OFF²...............331
18. A/T Does Not Shift: D
3-> 22, When Selector
Lever²D²->²2²Position.........................................332
19. A/T Does Not Shift: 2
2-> 11, When Selector
Lever²2²->²1²Position .........................................333
20. Vehicle Does Not Decelerate By Engine
Brake........................................................................334
21. TCM Self-diagnosis Does Not Activate (PNP,
Overdrive Control and Throttle Position Switches
Circuit Checks) ........................................................334
A/T SHIFT LOCK SYSTEM.........................................343
Description ...............................................................343
Shift Lock System Electrical Parts Location............343
Wiring Diagram - SHIFT -........................................344
Diagnostic Procedure ..............................................345
KEY INTERLOCK CABLE..........................................349
Components.............................................................349
Removal ...................................................................349
Installation ................................................................350
ON-VEHICLE SERVICE..............................................351
Control Valve Assembly and Accumulators .............351
Control Cable Adjustment ........................................352
Park/Neutral Position (PNP) Switch Adjustment .....352
Differential Side Oil Seal Replacement ...................353
Revolution Sensor Replacement .............................353
REMOVAL AND INSTALLATION...............................354
Removal ...................................................................354
Installation ................................................................355
OVERHAUL.................................................................357
Components-1 3AX00, 3AX01, 3AX19, 3AX63
and 3AX64 models ..................................................357
Components-1 3AX10 and 3AX18 models .............358
Components-2 3AX00, 3AX01, 3AX19, 3AX63
and 3AX64 models ..................................................359
Components-2 3AX10 and 3AX18 models .............360
Components-3 3AX00, 3AX01, 3AX19, 3AX63
and 3AX64 models ..................................................361
Components-3 3AX10 and 3AX18 models .............362
Oil Channel ..............................................................363
CONTENTS(Cont'd)
AT-3

Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings - 3AX00, 01,
19, 63 and 64 models..............................................364
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings - 3AX10 and
3AX18 models .........................................................365
DISASSEMBLY............................................................366
REPAIR FOR COMPONENT PARTS.........................381
Manual Shaft............................................................381
Oil Pump ..................................................................384
Control Valve Assembly ...........................................388
Control Valve Upper Body .......................................397
Control Valve Lower Body .......................................401
Reverse Clutch ........................................................403
High Clutch ..............................................................407
Forward Clutch and Overrun Clutch........................412
Low & Reverse Brake..............................................419
Rear Internal Gear, Forward Clutch Hub and
Overrun Clutch Hub .................................................423
O/Shaft, O/Gear, I/Gear, R/Pinion Gear and B/
Retainer - 3AX00, 01, 19, 63 and 64 models .........427
Output Shaft, Idler Gear, Reduction Pinion Gear
and Bearing Retainer - 3AX10 and 3AX18
models .....................................................................432
Band Servo Piston Assembly ..................................437
Final Drive................................................................442
ASSEMBLY..................................................................446
Assembly (1) ............................................................446
Adjustment (1) .........................................................447
Assembly (2) ............................................................455Adjustment (2) .........................................................459
Assembly (3) ............................................................462
Assembly (4) ............................................................465
SERVICE DATA AND SPECIFICATIONS (SDS).......470
General Specifications .............................................470
Shift Schedule..........................................................470
Stall Revolution ........................................................473
Line Pressure...........................................................473
Control Valves..........................................................474
Clutch and Brakes ...................................................474
Clutch and Brake Return Springs............................477
Oil Pump ..................................................................477
Input Shaft ...............................................................478
Planetary Carrier......................................................478
Final Drive................................................................478
Reduction Pinion Gear ............................................480
Output Shaft - 3AX00, 3AX01, 3AX19, 3AX63
and 3AX64 models ..................................................481
Output Shaft - 3AX10 and 3AX18 models ..............483
Bearing Retainer ......................................................484
Total End Play..........................................................484
Reverse Clutch End Play ........................................484
Accumulator .............................................................484
Band Servo ..............................................................485
Removal and Installation .........................................485
Shift Solenoid Valves ...............................................485
Resistance ...............................................................485
ATF Temp. Sensor ...................................................485
Revolution Sensor ...................................................485
Dropping Resistor ....................................................485
CONTENTS(Cont'd)
AT-4

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJAT0249The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, 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 should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
Precautions for On Board Diagnostic (EURO-
OBD) System of A/T and Engine Ð Euro-OBD
Ð
NJAT0245The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
+Be sure to turn the ignition switch ªOFFº and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc.
will cause the MIL to light up.
+Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
+Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MIL to light up due to a short circuit.
+Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system,
etc.
+Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
SEF289H
PrecautionsNJAT0246+Before connecting or disconnecting the TCM harness
connector, turn ignition switch OFF and disconnect nega-
tive battery terminal. Failure to do so may damage the
TCM. Because battery voltage is applied to TCM even if
ignition switch is turned off.
PRECAUTIONS
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
AT-7

AAT470A
+When connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on TCM
pin terminal, when connecting pin connectors.
MEF040DA
+Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions prop-
erly or not. (See page AT-118.)
SAT964I
+After performing each TROUBLE DIAGNOSIS, perform
ªDTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DUREº.
The DTC should not be displayed in the ªDTC CONFIRMA-
TION PROCEDUREº if the repair is completed.
+Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.
+Disassembly should be done in a clean work area.
+Use lint-free cloth or towels for wiping parts clean. Common
shop rags can leave fibers that could interfere with the opera-
tion of the transaxle.
+Place disassembled parts in order for easier and proper
assembly.
+All parts should be carefully cleaned with a general purpose,
non-flammable solvent before inspection or reassembly.
+Gaskets, seals and O-rings should be replaced any time the
transaxle is disassembled.
+It is very important to perform functional tests whenever they
are indicated.
+The valve body contains precision parts and requires extreme
care when parts are removed and serviced. Place disas-
sembled 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
PRECAUTIONS
Precautions (Cont'd)
AT-8

parts. Apply petroleum jelly to protect O-rings and seals, or
hold bearings and washers in place during assembly. Do not
use grease.
+Extreme care should be taken to avoid damage to O-rings,
seals and gaskets when assembling.
+After overhaul, refill the transaxle 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 converter and ATF
cooling system.
Always follow the procedures under ªChanging A/T Fluidº in the
AT section when changing A/T fluid. Refer to ªChanging A/T
Fluidº, AT-15.
Service Notice or PrecautionsNJAT0247FAIL-SAFENJAT0247S01The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged.
Under Fail-Safe, the vehicle always runs in third gear, even with a shift lever position of ª1º, ª2º or ªDº. The
customer may complain of sluggish or poor acceleration.
When the ignition key is turned ªONº following Fail-Safe operation, O/D OFF indicator lamp blinks for about
8 seconds. (For GENERAL AND EXCEPT FOR EURO-OBD; ªSELF-DIAGNOSTIC PROCEDURE (WITHOUT
CONSULT-II)º, refer to AT-44 and for EURO-OBD; ªTCM SELF-DIAGNOSTIC PROCEDURE (No Tools)º, refer
to AT-63.)
Fail-Safe may occur without electrical circuit damage if the vehicle is driven under extreme conditions (such
as excessive wheel spin followed by sudden braking). To recover normal shift pattern, turn the ignition key
ªOFFº for 5 seconds, then ªONº.
The blinking of the O/D OFF indicator lamp for about 8 seconds will appear only once and be cleared. The
customer may resume normal driving conditions.
Always follow the ªWORK FLOWº [Refer to AT-73 (General and except for Euro-OBD), AT-78 (EURO-OBD).]
The SELF-DIAGNOSIS results will be as follows:
The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
TORQUE CONVERTER SERVICENJAT0247S02The 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 engine coolant containing antifreeze.
+Internal failure of stator roller clutch.
+Heavy clutch debris due to overheating (blue converter).
+Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are
worn or damaged Ð indicates that lining material came from converter.
PRECAUTIONS
Precautions (Cont'd)
AT-9

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.
+Transaxle failure did not display evidence of damaged or worn internal parts, steel particles or clutch plate
lining material in unit and inside the fluid filter.
+Vehicle has been exposed to high mileage (only). The exception 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.
EURO-OBD SELF-DIAGNOSIS Ð EURO-OBD ÐNJAT0247S04+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 O/D OFF indicator or the malfunction indicator (MI). Refer to the table on AT-55
for the indicator used to display each self-diagnostic result.
+The self-diagnostic results indicated by the MI are automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure ªHOW TO ERASE DTCº on AT-52 to complete the repair and avoid
unnecessary blinking of the MI.
+The following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when
the O/D OFF indicator lamp does not indicate any malfunctions.
þ PNP switch
þ A/T 1st, 2nd, 3rd, or 4th gear function
*: For details of EURO-OBD, refer to EC-59, ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº.
+Certain systems and components, especially those related to EURO-OBD, may use a new style
slide-locking type harness connector.
For description and how to disconnect, refer to EL-6, ªHARNESS CONNECTORº.
Wiring Diagrams and Trouble DiagnosisNJAT0248When you read wiring diagrams, refer to the following:
+GI-11, ªHOW TO READ WIRING DIAGRAMSº
+EL-10, ªPOWER SUPPLY ROUTINGº
When you perform trouble diagnosis, refer to the following:
+GI-32, ªHOW TO FOLLOW TEST GROUP IN TROUBLE DIAGNOSISº
+GI-21, ªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº
PRECAUTIONS
Service Notice or Precautions (Cont'd)
AT-10

Special Service ToolsNJAT0006
Tool number
Tool nameDescription
ST2505S001
Oil pressure gauge set
1 ST25051001
Oil pressure gauge
2 ST25052000
Hose
3 ST25053000
Joint pipe
4 ST25054000
Adapter
5 ST25055000
Adapter
NT097
Measuring line pressure
KV31103000
Drift
NT105
Installing differential oil seal
(Use with ST35325000.)
a: 59 mm (2.32 in) dia.
b: 49 mm (1.93 in) dia.
ST35325000
Drift
NT417
Installing differential oil seal
(Use with KV31103000.)
a: 215 mm (8.46 in)
b: 25 mm (0.98 in) dia.
c: M12 x 1.5P
KV31103200
Clutch spring compres-
sor
NT423
Removing and installing clutch return spring
a: 320 mm (12.60 in)
b: 174 mm (6.85 in)
ST23540000
Pin punch
NT442
Removing and installing parking rod plate, manual
plate and differential pinion mate shaft retaining
pins
a: 2.3 mm (0.091 in) dia.
b: 4 mm (0.16 in) dia.
KV32101000
Pin punch
NT410
Installing throttle lever and manual shaft retaining
pins
a: 4 mm (0.16 in) dia.
ST25710000
Pin punch
NT410
Aligning groove of manual shaft and hole of trans-
mission case
a: 2 mm (0.08 in) dia.
PREPARATION
Special Service Tools
AT-11