2003 NISSAN TEANA Oil

AT-3
D
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F
G
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MA
B
AT
CONSULT-II Reference Value .............................. 167
Diagnostic Procedure ........................................... 167
TROUBLE DIAGNOSIS FOR SYMPTOMS ............ 168
Wiring Diagram — AT — NONDTC ...................... 168
A/T CHECK Indicator Lamp Does Not Come On . 173
Engine Cannot Be Started in “P” and “N” Position . 175
In “P” Position, Vehicle Moves Forward or Backward
When Pushed ....................................................... 176
In “N” Position, Vehicle Moves ............................. 176
Large Shock. “N” → “R” Position .......................... 177
Vehicle Does Not Creep Backward in “R” Position . 179
Vehicle Does Not Creep Forward in “D”, “3”, “2” or
“1” Position ........................................................... 181
Vehicle Cannot Be Started From D
1 ..................... 182
A/T Does Not Shift: D
1 → D2 or Does Not Kickdown:
D
4 → D2 ............................................................... 184
A/T Does Not Shift: D
2 → D3 ............................... 186
A/T Does Not Shift: D
3 → D4 ............................... 188
A/T Does Not Perform Lock-up ............................ 191
A/T Does Not Hold Lock-up Condition ................. 193
Lock-up Is Not Released ...................................... 195
Engine Speed Does Not Return To Idle (Light Brak-
ing D
4 → D3 ) ....................................................... 195
A/T Does Not Shift: D
4 → 33 , When A/T Selector
Lever “D” → “3” .................................................... 197
A/T Does Not Shift: 3
3 → 22 , When Selector Lever
“3” → “2” Position ................................................. 198
A/T Does Not Shift: 2
2 → 11 , When Selector Lever
“2” → “1” Position ................................................. 200
Vehicle Does Not Decelerate By Engine Brake (D
4
→ 3
3 ) ................................................................... 203
Vehicle Does Not Decelerate By Engine Brake (3
3
→ 2
2 ) ................................................................... 205
Vehicle Does Not Decelerate By Engine Brake (2
2
→ 1
1 ) ................................................................... 208
TCM Self-diagnosis Does Not Activate ................ 210
TRANSMISSION CONTROL MODULE ..................211
Removal and Installation ....................................... 211
SHIFT CONTROL SYSTEM ................................... 213
Control Device Removal and Installation ............. 213
Adjustment of A/T Position ................................... 215
Checking of A/T Position ...................................... 215
A/T SHIFT LOCK SYSTEM .................................... 216
Description ........................................................... 216
Shift Lock System Electrical Parts Location ......... 216
Wiring Diagram — AT — SHIFT ........................... 217
Shift Lock Control Unit Reference Values ............ 221
Component Inspection ......................................... 222
ON-VEHICLE SERVICE ......................................... 225
Control Valve Assembly and Accumulators .......... 225
Park/Neutral Position (PNP) Switch ..................... 230
Differential Side Oil Seal Replacement ................ 231
Revolution Sensor Replacement .......................... 233
Turbine Revolution Sensor (Power Train Revolution
Sensor) Replacement .......................................... 234
AIR BREATHER HOSE .......................................... 236
Removal and Installation [Air Breather Hose (Oil
Catch Tank to Air Duct)] ....................................... 236
Removal and Installation [Oil Catch Tank and Air Breather Hose (A/T assembly to Oil catch tank)] . 239
TRANSAXLE ASSEMBLY ......................................241
Removal and Installation ......................................241
OVERHAUL ............................................................246
Components .........................................................246
Oil Channel ...........................................................252
Locations of Adjusting Shims, Needle Bearings and
Thrust Washers ....................................................253
Locations of Snap Rings .......................................254
DISASSEMBLY .......................................................255
Disassembly .........................................................255
REPAIR FOR COMPONENT PARTS .....................272
Manual Shaft ........................................................272
Oil Pump ...............................................................275
Control Valve Assembly ........................................280
Control Valve Upper Body ....................................289
Control Valve Lower Body ....................................293
Reverse Clutch .....................................................296
High Clutch ...........................................................301
Forward and Overrun Clutches ............................307
Low & Reverse Brake ...........................................315
Rear Internal Gear, Forward Clutch Hub and Over-
run Clutch Hub ......................................................319
Output Shaft, Idler Gear, Reduction Pinion Gear and
Bearing Retainer ...................................................323
Band Servo Piston Assembly ...............................329
Final Drive ............................................................335
ASSEMBLY .............................................................339
Assembly (1) .........................................................339
Adjustment (1) ......................................................340
Assembly (2) .........................................................345
Adjustment (2) ......................................................352
Assembly (3) .........................................................355
SERVICE DATA AND SPECIFICATIONS (SDS) ....362
General Specifications ..........................................362
Vehicle Speed Which Gear Shifting Occurs .........362
Vehicle Speed at When Lock-up Occurs/Releases .362
Stall Revolution .....................................................363
Line Pressure .......................................................363
Adjusting shims, Needle Bearings, Thrust Washers
and Snap Rings ....................................................363
Control Valves ......................................................364
Accumulator ..........................................................365
Clutch and Brakes ................................................366
Final Drive ............................................................367
Planetary Carrier and Oil Pump ............................367
Input Shaft ............................................................367
Reduction Pinion Gear .........................................367
Band Servo ...........................................................368
Output Shaft .........................................................368
Bearing Retainer ...................................................368
Total End Play .......................................................368
Reverse Clutch End Play ......................................368
Removal and Installation ......................................368
Shift Solenoid Valves ............................................368
Solenoid Valves ....................................................368
A/T Fluid Temperature Sensor ..............................368
Revolution Sensor ................................................369

PREPARATION
AT-9
D
E
F
G
H
I
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K
L
MA
B
AT

PREPARATIONPFP:00100
Special Service ToolsBCS000ZJ
Tool number
Tool nameDescription
KV381054S0
Puller

Removing differential side bearing outer race

Removing idler gear bearing outer race
a: 250 mm (9.84 in)
b: 160 mm (6.30 in)
ST33400001
Drift

Installing differential side oil seal

Installing oil pump housing oil seal
a: 60 mm (2.36 in) dia.
b: 47 mm (1.85 in) dia.
ST2505S001
Oil pressure gauge set
1. ST25051001
Oil pressure gauge
2. ST25052000
Hose
3. ST25053000
Joint pipe
4. ST25054000
Adapter
5. ST25055000
AdapterMeasuring line pressure
ST27180001
PullerRemoving idler gear
a: 100 mm (3.94 in)
b: 110 mm (4.33 in)
c: M8 x 1.25P
ST23540000
Pin punchRemoving and installing parking rod plate and
manual plate retaining pins
a: 2.3 mm (0.091 in) dia.
b: 4 mm (0.16 in) dia.
ST25710000
Pin punchAligning groove of manual shaft and hole of
transaxle case
a: 2 mm (0.08 in) dia.
NT414
NT086
NT097
NT424
NT442
NT410

AT-12
PREPARATION

Commercial Service Tools BCS000ZK
Tool nameDescription
Power toolLoosening bolts and nuts
PullerRemoving idler gear bearing inner race
PullerRemoving reduction pinion gear bearing inner
race
a: 60 mm (2.36 in) dia.
b: 35 mm (1.38 in) dia.
DriftInstalling radial needle bearing on bearing
retainer
a: 36 mm (1.42 in) dia.
DriftInstalling manual shaft oil seal
a: 22 mm (0.87 in) dia.
DriftRemoving radial needle bearing from bearing
retainer
a: 33.5 mm (1.319 in) dia.
PBIC0190E
NT077
NT411
NT083
NT083
NT083

AT-16
A/T CONTROL SYSTEM

A/T CONTROL SYSTEMPFP:31036
Cross-Sectional View BCS000ZN
1. Band servo piston 2. Reverse clutch drum 3. Converter housing
4. Oil pump 5. Brake band 6. Reverse clutch
7. High clutch 8. Front planetary gear 9. Rear planetary gear
10. Forward clutch 11. Overrun clutch 12. Output gear
13. Side cover 14. Idler gear 15. Transaxle case
16. Low & reverse brake 17. Forward one-way clutch 18. Low one-way clutch
19. Reduction pinion gear 20. Final gear 21. Differential case
22. Input shaft 23. Torque converter
SCIA7734E

A/T CONTROL SYSTEM
AT-17
D
E
F
G
H
I
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MA
B
AT

Shift MechanismBCS000ZO
CONSTRUCTION
FUNCTION OF CLUTCH AND BRAKE
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 gear 9. 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 clutch 17. Overrun clutch 18. Low one-way clutch
19. Low & reverse brake 20. Parking pawl 21. Parking gear
22. Output shaft 23. Idler gear 24. Output gear
SAT998I
Clutch and brake components Abbr. Function
5Reverse clutch R/C To transmit input power to front sun gear 7 .
6High clutch H/C To transmit input power to front planetary carrier 10 .
15Forward clutch F/C To connect front planetary carrier 10 with forward one-way clutch 16 .
17Overrun clutch O/C To connect front planetary carrier 10 with rear internal gear 13 .
4Brake band B/B To lock front sun gear 7 .
16Forward one-way clutch F/O.CWhen forward clutch 15 is engaged, to stop rear internal gear 13 from rotating
in opposite direction against engine revolution.
18Low one-way clutch L/O.CTo stop front planetary carrier 10 from rotating in opposite direction against
engine revolution.
19Low & reverse brake L & R/B To lock front planetary carrier 10 .

AT-18
A/T CONTROL SYSTEM

CLUTCH AND BAND CHART

*1: Oil pressure is applied to both 2nd “apply” side and 3rd “release” side of band servo piston. However, brake band does not con-
tract because oil pressure area on the “release” side is greater than that on the “apply” side.

*2: Oil pressure is applied to 4th “apply” side in condition *1 above, and brake band contracts.

: Operates.

A: Operates when throttle opening is less than 3/16, activating engine brake.

B: Operates during “progressive” 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. 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
release4th
apply
PPA R K
POSITION
RREVERSE
POSITION
NNEUTRAL
POSITION
1st D B B
D2nd A BAutomatic
shift
3rd A *1C C B1 ⇔ 2 ⇔ 3
⇔ 4
4th C *2C C
31st D B B
Automatic
shift
1 ⇔ 2 ⇔ 3 2nd A B
3rd A *1C C B
21stBB
Automatic
shift
1 ⇔ 2 ⇐ 3 2ndB
3rd *1C C B
11stBB
Locks (held
stationary)
in 1st speed
1 ⇐ 2 ⇐ 3 2ndB
3rd *1C C B

AT-30
A/T CONTROL SYSTEM

CONTROL OF SHIFT VALVES A AND B
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 figure above shows the operation of shift valve B. When the shift solenoid valve is “ON”, pilot pressure
applied to the end face of the shift valve overcomes spring force, moving the valve upward.
Lock-up ControlBCS000ZU
The 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 pressure signal which controls the torque converter clutch piston.
CONDITIONS FOR LOCK-UP OPERATION
When vehicle is driven in 3rd and 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.
TORQUE CONVERTER CLUTCH SOLENOID VALVE CONTROL
Lock-up Control System Diagram
SAT009J
Selector lever “D” position “3” position
Gear position D
4 , D333
Vehicle speed sensor More than set value
accelerator pedal position sensor Less than set opening
Closed throttle position signal OFF
A/T fluid temperature sensor More than 20°C (68°F)
SCIA5623E

A/T CONTROL SYSTEM
AT-33
D
E
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H
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MA
B
AT

Control ValveBCS000ZW
FUNCTION OF CONTROL VALVES
Valve name Function
Pressure regulator valve, plug and sleeve
plugRegulates oil discharged from the oil pump to provide optimum line pressure for all driv-
ing conditions.
Pressure modifier valve and sleeve Used as a signal supplementary valve to the pressure regulator valve. Regulates pres-
sure-modifier pressure (signal pressure) which controls optimum line pressure for all
driving conditions.
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 three oil circuits using output pressure of shift solenoid valve A
to meet driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and upshifting (1st → 2nd → 3rd → 4th gears/4th →
3rd → 2nd → 1st gears) in combination with shift valve B.
Shift valve B Simultaneously switches two oil circuits using output pressure of shift solenoid valve B in
relation to driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and upshifting (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 downshift-
ing from the 1st position 1
2 to 11 .
Overrun clutch reducing valve Reduces oil pressure directed to the overrun clutch and prevents engine-brake shock.
In the 1st and 2nd 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 Lessens the shock find when the 2nd gear band servo contracts, and provides smooth
shifting.
3-2 timing valve Switches the pace that oil pressure is released depending on vehicle speed; maximizes
the high clutch release timing, and allows for soft downshifting.
Shuttle valve Determines if the overrun clutch solenoid valve should control the 3-2 timing valve or the
overrun clutch control valve and switches between the two.
Cooler check valve At low speeds and with a small load when a little heat is generated, saves the volume of
cooler flow, and stores the oil pressure for lock-up.