oil NISSAN ALMERA 2001 Service Manual

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

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

Tool number
Tool nameDescription
ST3306S001
Differential side bearing
puller set
1 ST33051001
Puller
2 ST33061000
Adapter
NT745
Removing differential side bearing inner race
a: 39 mm (1.54 in) dia.
b: 29.5 mm (1.161 in) dia.
c: 130 mm (5.12 in)
d: 135 mm (5.31 in)
e: 120 mm (4.72 in)
KV381054S0
Puller
NT414
+Removing idler gear bearing outer race
+Removing differential side oil seals
+Removing differential side bearing outer race
+Removing needle bearing from bearing retainer
a: 250 mm (9.84 in)
b: 160 mm (6.30 in)
ST27180001
Puller
NT424
+Removing idler gear
a: 100 mm (3.94 in)
b: 110 mm (4.33 in)
c: M8 x 1.25P
ST30031000
Puller
NT411
Removing reduction gear bearing inner race
a: 90 mm (3.54 in) dia.
b: 50 mm (1.97 in) dia.
ST35272000
Drift
NT426
+Installing reduction gear bearing inner race
+Installing idler gear bearing inner race
a: 72 mm (2.83 in) dia.
b: 35.5 mm (1.398 in) dia.
ST37830000
Drift
NT427
Installing idler gear bearing outer race
a: 62 mm (2.44 in) dia.
b: 39 mm (1.54 in) dia.
PREPARATION
Special Service Tools (Cont'd)
AT-12

Tool number
Tool nameDescription
ST35321000
Drift
NT073
Installing output shaft bearing
a: 49 mm (1.93 in) dia.
b: 41 mm (1.61 in) dia.
ST30633000
Drift
NT073
Installing differential side bearing outer race
a: 67 mm (2.64 in) dia.
b: 49 mm (1.93 in) dia.
ST35271000
Drift
NT115
+Installing idler gear
a: 72 mm (2.83 in) dia.
b: 63 mm (2.48 in) dia.
ST33400001
Drift
NT115
+Installing oil pump housing oil seal
a: 60 mm (2.36 in) dia.
b: 47 mm (1.85 in) dia.
KV38105710
Preload adapter
NT087
+Measuring clearance between side gear and
differential case
KV40104840
Drift
NT108
+Installing output shaft bearing outer race onto
bearing retainer
a: 49 mm (1.93 in) dia.
b: 42 mm (1.65 in) dia.
Commercial Service ToolsNJAT0007
Tool name Description
Puller
NT077
+Removing idler gear bearing inner race
+Removing and installing band servo
piston snap ring
PREPARATION
Special Service Tools (Cont'd)
AT-13

Shift MechanismNJAT0013CONSTRUCTIONNJAT0013S01
SAT998I
1. Torque converter
2. Oil pump
3. Input shaft
4. Brake band
5. Reverse clutch
6. High clutch
7. Front sun gear
8. Front pinion gear9. Front internal gear
10. Front planetary carrier
11. Rear sun gear
12. Rear pinion gear
13. Rear internal gear
14. Rear planetary carrier
15. Forward clutch
16. Forward one-way clutch17. Overrun clutch
18. Low one-way clutch
19. Low & reverse brake
20. Parking pawl
21. Parking gear
22. Output shaft
23. Idle gear
24. Output gear
FUNCTION OF CLUTCH AND BRAKENJAT0013S03
Clutch and brake components Abbr. Function
5Reverse clutch R/C To transmit input power to front sun gear7.
6High clutch H/C To transmit input power to front planetary carrier10.
15Forward clutch F/C To connect front planetary carrier10with forward one-way clutch16.
17Overrun clutch O/C To connect front planetary carrier10with rear internal gear13.
4Brake band B/B To lock front sun gear7.
16Forward one-way clutch F/O.C When forward clutch15is engaged, to stop rear internal gear13from rotat-
ing in opposite direction against engine revolution.
18Low one-way clutch L/O.C To stop front planetary carrier10from rotating in opposite direction against
engine revolution.
19Low & reverse brake L & R/B To lock front planetary carrier10.
OVERALL SYSTEM
Shift Mechanism
AT-22

CLUTCH AND BAND CHARTNJAT0013S04
Shift positionReverse
clutch
5High
clutch
6For-
ward
clutch
15Over-
run
clutch
17Band servo
Forward
one-way
clutch
16Low
one-
way
clutch
18Low &
reverse
brake
19Lock-up Remarks
2nd
apply3rd
release4th
apply
PPARK
POSITION
RjjREVERSE
POSITION
NNEUTRAL
POSITION
D*41stj*1D B B
Automatic
shift
1Û2Û3
Û4 2ndj*1AjB
3rdjj*1A *2C C B *5j
4thjC *3C Cjj
21stjDBBAutomatic
shift
1Û2 2ndjAjB
11stjjBjLocks (held
stationary)
in 1st
speed
1Ü2 2ndjjjB
*1: Operates when overdrive control switch is set in ªOFFº position.
*2: Oil pressure is applied to both 2nd ªapplyº side and 3rd ªreleaseº side of band servo piston. However, brake band does not contract
because oil pressure area on the ªreleaseº side is greater than that on the ªapplyº side.
*3: Oil pressure is applied to 4th ªapplyº side in condition *2 above, and brake band contracts.
*4: A/T will not shift to 4th when overdrive control switch is set in ªOFFº position.
*5: Operates when overdrive control switch is ªOFFº.
j: Operates.
A: Operates when throttle opening is less than 3/16, activating engine brake.
B: Operates during ªprogressiveº acceleration.
C: Operates but does not affect power transmission.
D: Operates when throttle opening is less than 3/16, but does not affect engine brake.
OVERALL SYSTEM
Shift Mechanism (Cont'd)
AT-23

Pilot pressure generated by the operation of shift solenoid valves
A and B is applied to the end face of shift valves A and B.
The drawing above shows the operation of shift valve B. When the
shift solenoid valve is ªONº, pilot pressure applied to the end face
of the shift valve overcomes spring force, moving the valve upward.
LOCK-UP CONTROLNJAT0015S03The torque converter clutch piston in the torque converter is locked
to eliminate torque converter slip to increase power transmission
efficiency. The solenoid valve is controlled by an ON-OFF duty
signal sent from the TCM. The signal is converted to an oil pres-
sure signal which controls the torque converter clutch piston.
Conditions for Lock-up OperationNJAT0015S0301When vehicle is driven in 4th gear position, vehicle speed and
throttle opening are detected. If the detected values fall within the
lock-up zone memorized in the TCM, lock-up is performed.
Overdrive control switch ON OFF
Selector lever ªDº position
Gear position D
4D3
Vehicle speed sensor More than set value
Throttle position sensor Less than set opening
Closed throttle position switch OFF
A/T fluid temperature sensor More than 40ÉC (104ÉF)
SAT010J
Torque Converter Clutch Solenoid Valve ControlNJAT0015S0302The torque converter clutch solenoid valve is controlled by the
TCM. The plunger closes the drain circuit during the ªOFFº period,
and opens the circuit during the ªONº period. If the percentage of
OFF-time increases in one cycle, the pilot pressure drain time is
reduced and pilot pressure remains high.
The torque converter clutch piston is designed to slip to adjust the
ratio of ON-OFF, thereby reducing lock-up shock.
SAT011J
OFF-time INCREASING
¯
Amount of drain DECREASING
¯
Pilot pressure HIGH
¯
Lock-up RELEASING
OVERALL SYSTEM
Control Mechanism (Cont'd)
AT-35

SAT015J
Overrun Clutch Solenoid Valve ControlNJAT0015S0402The overrun clutch solenoid valve is operated by an ON-OFF sig-
nal transmitted by the TCM to provide overrun clutch control
(engine brake control).
When this solenoid valve is ªONº, the pilot pressure drain port
closes. When it is ªOFFº, the drain port opens.
During the solenoid valve ªONº pilot pressure is applied to the end
face of the overrun clutch control valve.
SAT016J
Overrun Clutch Control Valve OperationNJAT0015S0403When the solenoid valve is ªONº, pilot pressure is applied to the
overrun clutch control valve. This pushes up the overrun clutch
control valve. The line pressure is then shut off so that the clutch
does not engage.
When the solenoid valve is ªOFFº, pilot pressure is not generated.
At this point, the overrun clutch control valve moves downward by
spring force. As a result, overrun clutch operation pressure is pro-
vided by the overrun clutch reducing valve. This causes the over-
run clutch to engage.
In the 1 position, the overrun clutch control valve remains pushed
down so that the overrun clutch is engaged at all times.
Control ValveNJAT0016FUNCTION OF CONTROL VALVESNJAT0016S01
Valve name Function
Pressure regulator valve, plug
and sleeveRegulates oil discharged from the oil pump to provide optimum line pressure for all driving
conditions.
Pressure modifier valve and
sleeveUsed as a signal supplementary valve to the pressure regulator valve. Regulates pressure-
modifier pressure (signal pressure) which controls optimum line pressure for all driving condi-
tions.
Pilot valve Regulates line pressure to maintain a constant pilot pressure level which controls lock-up
mechanism, overrun clutch, shift timing.
Accumulator control valve Regulates accumulator back-pressure to pressure suited to driving conditions.
Manual valve Directs line pressure to oil circuits corresponding to select positions.
Hydraulic pressure drains when the shift lever is in Neutral.
Shift valve A Simultaneously switches four oil circuits using output pressure of shift solenoid valve A to
meet driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and up-shifting (1st®2nd®3rd®4th gears/4th®3rd®
2nd®1st gears) in combination with shift valve B.
OVERALL SYSTEM
Control Mechanism (Cont'd)
AT-37

Valve name Function
Shift valve B Simultaneously switches three oil circuits using output pressure of shift solenoid valve B in
relation to driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and up-shifting (1st®2nd®3rd®4th gears/4th®3rd®
2nd®1st gears) in combination with shift valve A.
Overrun clutch control valve Switches hydraulic circuits to prevent engagement of the overrun clutch simultaneously with
application of the brake band in D
4. (Interlocking occurs if the overrun clutch engages during
D
4.)
1st reducing valve Reduces low & reverse brake pressure to dampen engine-brake shock when down-shifting
from the ª1º position 1
2to 11.
Overrun clutch reducing valve Reduces oil pressure directed to the overrun clutch and prevents engine-brake shock.
In ª1º and ª2º positions, line pressure acts on the overrun clutch reducing valve to increase
the pressure-regulating point, with resultant engine brake capability.
Torque converter relief valve Prevents an excessive rise in torque converter pressure.
Torque converter clutch control
valve, plug and sleeveActivates or inactivates the lock-up function.
Also provides smooth lock-up through transient application and release of the lock-up system.
1-2 accumulator valve and piston Dampens the shock encountered when 2nd gear band servo contracts, and provides smooth
shifting.
3-2 timing valve Switches oil pressure with 3-2 timing valve according to throttle opening.
Shuttle control valve Reduces shock when down-shifting from 3rd to 2nd and regulates overrun clutch.
Cooler check valve Regulates oil pressure which causes lock-up when driving at low speeds.
OVERALL SYSTEM
Control Valve (Cont'd)
AT-38