2007 NISSAN LATIO engine

AT-3
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa Diagnostic Procedure ........................................... 172
Component Inspection ......................................... 175
DTC TURBINE REVOLUTION SENSOR ............... 176
Description ........................................................... 176
CONSULT-II Reference Value .............................. 176
On Board Diagnosis Logic ................................... 176
Possible Cause .................................................... 176
DTC Confirmation Procedure ............................... 176
Wiring Diagram — AT — PT/SEN ........................ 177
Diagnostic Procedure ........................................... 178
CONTROL UNIT (RAM), CONTROL UNIT (ROM) . 182
Description ........................................................... 182
On Board Diagnosis Logic ................................... 182
Possible Cause .................................................... 182
DTC Confirmation Procedure ............................... 182
Diagnostic Procedure ........................................... 182
MAIN POWER SUPPLY AND GROUND CIRCUIT . 183
Wiring Diagram — AT — MAIN ............................ 183
Diagnostic Procedure ........................................... 184
PNP, OD SWITCH AND CLOSED THROTTLE,
WIDE OPEN THROTTLE POSITION SIGNAL CIR-
CUIT ........................................................................ 186
CONSULT-II Reference Value .............................. 186
TCM Terminals and Reference Value ................... 186
Diagnostic Procedure ........................................... 187
Component Inspection ......................................... 191
SHIFT POSITION INDICATOR CIRCUIT ............... 192
Description ........................................................... 192
CONSULT-II Reference Value .............................. 192
Diagnostic Procedure ........................................... 192
TROUBLE DIAGNOSIS FOR SYMPTOMS ............ 193
Wiring Diagram — AT — NONDTC ...................... 193
OD OFF Indicator Lamp Does Not Come On ...... 198
Engine Cannot Be Started in “P” and “N” Position . 200
In “P” Position, Vehicle Moves Forward or Backward
When Pushed ....................................................... 201
In “N” Position, Vehicle Moves ............................. 201
Large Shock “N” → “R” Position ........................... 202
Vehicle Does Not Creep Backward in “R” Position . 203
Vehicle Does Not Creep Forward in “D”, “2” or “1”
Position ................................................................ 205
Vehicle Cannot Be Started from D
1 ...................... 206
A/T Does Not Shift: D
1 → D2 or Does Not Kickdown:
D
4 → D2 ............................................................... 208
A/T Does Not Shift: D
2 → D3 ............................... 210
A/T Does Not Shift: D
3 → D4 ............................... 212
A/T Does Not Perform Lock-up ............................ 214
A/T Does Not Hold Lock-up Condition ................. 215
Lock-up Is Not Released ...................................... 216
Engine Speed Does Not Return to Idle (Light Brak-
ing D
4 → D3 ) ....................................................... 217
A/T Does Not Shift: D
4 → D3 , When OD OFF .... 218
A/T Does Not Shift: D
3 → 22 , When Selector Lever
“D” → “2” Position ................................................ 219
A/T Does Not Shift: 2
2 → 11 , When Selector Lever
“2” → “1” Position ................................................. 221
Vehicle Does Not Decelerate by Engine Brake .... 223
TCM Self-diagnosis Does Not Activate ................ 227TRANSMISSION CONTROL MODULE ..................228
Removal and Installation ......................................228
SHIFT CONTROL SYSTEM ....................................229
Control Device Removal and Installation ..............229
Control Device Disassembly and Assembly .........232
Selector Lever Knob Removal and Installation .....233
Adjustment of A/T Position ...................................233
Checking of A/T Position ......................................234
A/T SHIFT LOCK SYSTEM ....................................235
Description ............................................................235
Shift Lock System Parts Location .........................235
Wiring Diagram — AT — SHIFT ...........................236
Diagnostic Procedure ...........................................237
KEY INTERLOCK CABLE ......................................239
Removal and Installation ......................................239
ON-VEHICLE SERVICE ..........................................242
Control Valve Assembly and Accumulators ..........242
Park/Neutral Position (PNP) Switch .....................246
Revolution Sensor ................................................247
Turbine Revolution Sensor (Power Train Revolution
Sensor) .................................................................248
Differential Side Oil Seal .......................................250
AIR BREATHER HOSE ..........................................252
Removal and Installation ......................................252
TRANSAXLE ASSEMBLY ......................................253
Removal and Installation ......................................253
OVERHAUL ............................................................257
Components .........................................................257
Oil Channel ...........................................................265
Locations of Adjusting Shims, Needle Bearings and
Thrust Washers ....................................................266
Locations of Snap Rings .......................................267
DISASSEMBLY .......................................................268
Disassembly .........................................................268
REPAIR FOR COMPONENT PARTS .....................285
Manual Shaft ........................................................285
Oil Pump ...............................................................289
Control Valve Assembly ........................................293
Control Valve Upper Body ....................................302
Control Valve Lower Body ....................................306
Reverse Clutch .....................................................309
High Clutch ...........................................................314
Forward and Overrun Clutches ............................320
Low & Reverse Brake ...........................................327
Rear Internal Gear and Forward Clutch Hub ........332
Output Shaft, Output Gear, Idler Gear, Reduction
Pinion Gear and Bearing Retainer ........................336
Band Servo Piston Assembly ...............................343
Final Drive ............................................................349
ASSEMBLY .............................................................354
Assembly (1) .........................................................354
Adjustment (1) ......................................................355
Assembly (2) .........................................................361
Adjustment (2) ......................................................366
Assembly (3) .........................................................369
SERVICE DATA AND SPECIFICATIONS (SDS) ....378
General Specifications ..........................................378
Vehicle Speed at Which Gear Shifting Occurs .....378
Vehicle Speed at When Lock-up Occurs/Releases .378

INDEX FOR DTC
AT-5
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
INDEX FOR DTCPFP:00024
Alphabetical Index UCS005LY
NOTE:
If DTC “CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis for
DTC “CAN COMM CIRCUIT”. Refer to AT- 9 4
.
*1: These numbers is prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
*3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
the same time.Items
(CONSULT-II screen terms)DTC
Reference page
CONSULT-II or GST
*1
A/T 1ST GR FNCTN P0731AT- 11 7
A/T 2ND GR FNCTN P0732AT- 1 2 1
A/T 3RD GR FNCTN P0733AT- 1 2 4
A/T 4TH GR FNCTN P0734AT- 1 2 8
A/T TCC S/V FNCTN P0744AT- 1 3 9
ATF TEMP SEN/CIRC P0710AT- 1 0 2
BATT/FLUID TEMP SEN —AT- 1 7 0
CAN COMM CIRCUIT U1000AT- 9 4
CONTROL UNIT (RAM) —AT- 1 8 2
CONTROL UNIT (ROM) —AT- 1 8 2
ENGINE SPEED SIG P0725AT- 11 3
LINE PRESSURE S/V P0745AT- 1 4 5
OVERRUN CLUTCH S/V P1760AT- 1 6 1
PNP SW/CIRC P0705AT- 9 7
SHIFT SOLENOID/V A*2P0750AT- 1 5 1
SHIFT SOLENOID/V B*2P0755AT- 1 5 6
T/C CLUTCH SOL/V P0740AT- 1 3 4
TURBINE SENSOR —AT- 1 7 6
VHCL SPEED SEN-A/T*3P0720AT- 1 0 7
VHCL SPEED SEN-MTR —AT- 1 6 6

AT-6
INDEX FOR DTC
Revision: June 20062007 Versa
DTC No. IndexUCS005LZ
NOTE:
If DTC “CAN COMM CIRCUIT” is displayed with other DTCs, first perform the trouble diagnosis for
DTC “CAN COMM CIRCUIT”. Refer to AT-9 4
.
*1: These numbers is prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
*3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
the same time.DTC
Items
(CONSULT-II screen terms) Reference page
CONSULT-II or GST
*1
P0705 PNP SW/CIRCAT- 9 7
P0710 ATF TEMP SEN/CIRCAT-102
P0720
VHCL SPEED SEN-A/T*3AT-107
P0725 ENGINE SPEED SIGAT- 11 3
P0731 A/T 1ST GR FNCTNAT- 11 7
P0732 A/T 2ND GR FNCTNAT-121
P0733 A/T 3RD GR FNCTNAT-124
P0734 A/T 4TH GR FNCTNAT-128
P0740 T/C CLUTCH SOL/VAT-134
P0744 A/T TCC S/V FNCTNAT-139
P0745 LINE PRESSURE S/VAT-145
P0750
SHIFT SOLENOID/V A*2AT-151
P0755
SHIFT SOLENOID/V B*2AT-156
P1760 OVERRUN CLUTCH S/VAT-161
U1000 CAN COMM CIRCUITAT- 9 4
— BATT/FLUID TEMP SENAT-170
— CONTROL UNIT (RAM)AT-182
— CONTROL UNIT (ROM)AT-182
— TURBINE SENSORAT-176
— VHCL SPEED SEN-MTRAT-166

AT-8
PRECAUTIONS
Revision: June 20062007 Versa
Precautions for On Board Diagnostic (OBD) System of A/T and EngineUCS005M 2
The 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 OFF and disconnect battery negative cable from battery nega-
tive terminal before any repair or inspection work. The open/short circuit of related switches, sen-
sors, 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 connectors are 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 erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
PrecautionsUCS005M 3

Before connecting or disconnecting the TCM harness con-
nector, turn ignition switch OFF and disconnect the battery
cable from the negative terminal. Failure to do so may dam-
age the TCM. Because battery voltage is applied to TCM
even if ignition switch is turned off.

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.

Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly
or not. (See page AT- 7 8 , "
TCM Terminals and Reference
Va l u e".)

After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) Confirmation Procedure”.
The DTC should not be displayed in the “DTC Confirmation
Procedure” 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 operation of the A/T.

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.
SEF 2 89 H
AAT4 7 0A
MEF040DA

PRECAUTIONS
AT-9
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa

Gaskets, seals and O-rings should be replaced any time the A/T 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 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 place 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
Refer to .

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
converter 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 - 1 7 , "
Changing A/T Fluid" , AT- 1 6 , "Checking A/T Fluid" .
Service Notice or PrecautionsUCS005M4
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 Service Bulletins for latest A/T oil cooler cleaning pro-
cedure. For radiator replacement, refer to Refer to CO-11, "
RADIATOR" .
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 engine 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 fluid 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
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.

AT-16
A/T FLUID
Revision: June 20062007 Versa
A/T FLUIDPFP:KLE40
Checking A/T FluidUCS005M 8
1. Warm up engine.
2. Check for A/T fluid leakage.
3. Before driving, A/T fluid level can be checked at A/T fluid tem-
peratures of 30 to 50°C (86 to 122°F) using the “COLD” range
on A/T fluid level gauge.
a. Park vehicle on level surface and set parking brake.
b. Start engine and move selector lever through each gear posi-
tion. Leave selector lever in “P” position.
c. Check A/T fluid level with engine idling.
d. Remove A/T fluid level gauge and wipe clean with lint-free cloth.
CAUTION:
When wiping the A/T fluid level gauge, always use lint-free
cloth.
e. Re-insert A/T fluid level gauge into A/T fluid charging pipe as far
as it will go.
CAUTION:
Firmly fix the A/T fluid level gauge to the A/T fluid charging
pipe using the stopper attached.
f. Remove A/T fluid level gauge and note reading. If reading is at
low side of range, add A/T fluid to the A/T fluid charging pipe.
CAUTION:
Do not overfill.
4. Drive vehicle for approximately 5 minutes.
5. Re-check A/T fluid level at A/T fluid temperatures of 50 to 80°C (122 to 176°F) using “HOT” range on A/T
fluid level gauge.
CAUTION:

When wiping the A/T fluid level gauge, always use lint-free cloth.

Firmly fix the A/T fluid level gauge to the A/T fluid charging pipe using the stopper attached.
6. Check A/T fluid condition and make any necessary repairs. Refer to AT- 5 3 , "
Fluid Condition Check" . If the
A/T fluid contains frictional material (clutches, bands, etc.), or if the A/T is repaired, overhauled, or
replaced, inspect and clean the A/T fluid cooler mounted in the radiator. Refer to AT- 1 7 , "
A/T Fluid Cooler
Cleaning" .
7. Install the removed A/T fluid level gauge into the A/T fluid charging pipe.
CAUTION:
Firmly fix the A/T fluid level gauge to the A/T fluid charging pipe using the stopper attached.
SCIA3451E
SM A05 1D

A/T FLUID
AT-17
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
Changing A/T FluidUCS005M9
1. Warm up A/T fluid.
2. Stop engine.
3. Drain A/T fluid by removing the drain plug. Reinstall the drain plug to the specified torque.
CAUTION:
Do not reuse drain plug gasket.
4. Refill the transaxle with new specified A/T fluid through the A/T fluid charging pipe. Always refill the tran-
saxle with the same volume of A/T fluid that was drained out.
5. Run engine at idle speed for 5 minutes.
6. Check A/T fluid level and condition. Refer to AT- 1 6 , "
Checking A/T Fluid" .
A/T Fluid Cooler CleaningUCS006KH
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 become trapped in the A/T fluid cooler. This debris can con-
taminate the newly serviced A/T or, in severe cases, can block 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 cooler 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 breath 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 the cooler
inlet hose for 5 seconds. Drain plug: Refer to AT- 2 5 7 , "
Components" .
Fluid grade and capacity: Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
SCIA5628E
SCIA5629E

A/T CONTROL SYSTEM
AT-21
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
Shift MechanismUCS005M B
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. Idle gear 24. Output gear
SAT9 9 8I
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 .