2011 NISSAN LATIO engine

A/T FLUIDAT-17
< SERVICE INFORMATION >
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A/T FLUID
Checking A/T FluidINFOID:0000000005928070
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 : Front side
• B : Reverse side
•C : Add
• D : OK
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 l evel 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 ga uge 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 ga uge 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-51, "
Inspections Before Trouble
Diagnosis". If the A/T fluid contains frictional material (clutches, bands, etc.), or if the A/T is repaired, over-
hauled, or replaced, inspect and clean the A/T fluid cooler mounted in the radiator. Refer to AT-18, "
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 gaug e to the A/T fluid charging pipe using the stopper attached.
Changing A/T FluidINFOID:0000000005928071
1. Warm up A/T fluid.
2. Stop engine.
3. Drain A/T fluid by removing the drain plug. Re install 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.
AWDIA0660GB
SMA051D
Drain plug: Refer to AT-237, "Component".
Revision: May 2010 2011 Versa

AT-18
< SERVICE INFORMATION >
A/T FLUID
5. Run engine at idle speed for 5 minutes.
6. Check A/T fluid level and condition. Refer to AT-17, "
Checking A/T Fluid".
A/T Fluid Cooler CleaningINFOID:0000000005928072
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 becom e trapped in the A/T fluid cooler. This debris can con-
taminate the newly serviced A/T or, in severe cases, can bloc k 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 c ooler 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 breathe 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 t he cooler inlet hose for 5 seconds.
7. Insert the tip of an air gun into the end of the cooler outlet hose.
8. Wrap a shop rag around the air gun tip and end of cooler outlet hose.
9. Blow compressed air regulated to 5 - 9 kg/cm
2 (490 - 883 kPa, 71 - 128 psi) through the cooler outlet hose
for 10 seconds to force out any remaining A/T fluid.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connec t the A/T fluid cooler steel lines to the A/T.
12. Remove the banjo bolts. Fluid grade and capacity: Refer to
MA-14
.
SCIA5628E
SCIA5629E
SCIA5630E
Revision: May 2010 2011 Versa

A/T CONTROL SYSTEMAT-21
< SERVICE INFORMATION >
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A/T CONTROL SYSTEM
Cross-Sectional ViewINFOID:0000000005928073
HR16DE engine models
SCIA7651J
1. Converter housing 2. Oil pump3. Brake band
4. Reverse clutch 5. High clutch6. Front planetary gear
7. Low one-way clutch 8. Rear planetary gear9. Forward clutch
10. Overrun clutch 11. Low & reverse brake12. Output gear
13. Band servo piston 14. Reverse clutch drum15. Side cover
16. Idler gear 17. Forward one-way clutch 18. Transaxle case
19. Reduction pinion gear 20. Final gear 21. Differential case
22. Input shaft 23. Torque converter
Revision: May 2010 2011 Versa

AT-22
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
MR18DE engine models
Shift MechanismINFOID:0000000005928074
CONSTRUCTION
SCIA7938E
1. Converter housing2. Oil pump3. Brake band
4. Reverse clutch 5. High clutch6. Front planetary gear
7. Low one-way clutch 8. Rear planetary gear9. Forward clutch
10. Overrun clutch 11. Low & reverse brake12. Output gear
13. Band servo piston 14. Reverse clutch drum15. Side cover
16. Idler gear 17. Forward one-way clutch 18. Transaxle case
19. Reduction pinion gear 20. Final gear21. Differential case
22. Input shaft 23. Torque converter
Revision: May 2010 2011 Versa

A/T CONTROL SYSTEMAT-23
< SERVICE INFORMATION >
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FUNCTION OF CLUTCH AND BRAKE
CLUTCH AND BAND CHART
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
SAT998I
Clutch and brake components Abbr. Function
5 Reverse clutch R/C To transmit input power to front sun gear 7 .
6 High clutch H/C To transmit input power to front planetary carrier 10.
15 Forward clutch F/C To connect front planetary carrier 10 with forward one-way clutch 16.
17 Overrun clutch O/C To connect front planetary carrier 10 with rear internal gear 13 .
4 Brake band B/B To lock front sun gear 7.
16 Forward one-way clutch F/O.C When forward clutch 15
is engaged, to stop rear internal gear 13 from rotating in
opposite direction against engine revolution.
18 Low one-way clutch L/O.CTo stop front planetary carrier
10 from rotating in opposite direction against en-
gine revolution.
19 Low & reverse brake L & R/B To lock front planetary carrier 10.
Shift posi-
tion R/C
5 H/C
6 F/C
15 O/C
17 Band servo
F/O.C
16 L/O.C
18 L&R/B
19 Lock-
up Remarks
2nd
apply 3rd re-
lease 4th ap-
ply
P PA R K
POSITION
R REVERSE
POSITION
N NEUTRAL
POSITION
D*4 1st *1DB B
Revision: May 2010 2011 Versa

AT-24
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
• *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 “pro gressive” 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
2 1st
BB
Automatic
shift
1 ⇔ 2 ⇐ 3
2nd
B
3rd *2C CB
1 1st
BB
Locks (held
stationary)
in 1st speed 1 ⇐ 2 ⇐ 3
2nd
B
3rd *2C CB
Shift posi-
tion R/C
5 H/C
6 F/C
15 O/C
17 Band servo
F/O.C
16 L/O.C
18 L&R/B
19 Lock-
up Remarks
2nd
apply 3rd re-
lease 4th ap-
ply
SAT991I
Revision: May 2010 2011 Versa

A/T CONTROL SYSTEMAT-25
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“D
1” and “21” Positions
*: Overrun clutch remains in engaged condition when throttle opening is less than 1/16. •
Forward clutch
• Forward one-way clutch
• Overrun clutch
• Low & reverse brake As overrun clutch engages, rear internal gear is locked by the operation of low and re-
verse brake.
This is different from that of D
1 and 21.
Engine brake Overrun clutch always engages, therefore engine brake can be obtained when deceler-
ating.
SCIA1816E
• Forward one-way clutch
• Forward clutch
• Low one-way clutch Rear internal gear is locked to rotate counterclockwise because of the functioning of these three
clutches.
Overrun clutch
engagement conditions
(Engine brake) D
1: OD OFF (OD OFF indicator lamp is on) and th
rottle opening is less than specification*
2
1: Always engaged
At D
1 and 21 positions, engine brake is not activated due to free turning of low one- way clutch.
Revision: May 2010 2011 Versa

AT-28
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
“D4” (OD) Position
SAT379J
•High clutch
• Brake band
• Forward clutch (Does not affect power
transmission) Input power is transmitted to front carrier through high clutch.
This front carrier turns around the sun gear which is fixed by brake band and makes
front internal gear (output) turn faster.
Engine brake At D
4 position, there is no one-way clutch in the power transaxle line and engine brake
can be obtained when decelerating.
Revision: May 2010 2011 Versa