clutch NISSAN TIIDA 2008 Service User Guide

A/T FLUID
AT-15
< SERVICE INFORMATION >
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A/T FLUID
Checking A/T FluidINFOID:0000000001703158
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-48, "
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-16, "
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.
Changing A/T FluidINFOID:0000000001703159
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.
SCIA3451E
SMA051D
Drain plug: Refer to AT-230, "Component".

AT-18
< SERVICE INFORMATION >
A/T FLUID
1. Inspect the coffee filter for debris.
a. If small metal debris less than 1mm (0.040 in) in size or metal
powder is found in the coffee filter, this is normal. If normal
debris is found, the A/T fluid cooler/radiator can be re-used and
the procedure is ended.
b. If one or more pieces of debris are found that are over 1mm
(0.040 in) in size and/or peeled clutch facing material is found in
the coffee filter, the A/T fluid cooler is not serviceable. The A/T
fluid cooler/radiator must be replaced and the inspection proce-
dure is ended. Refer to CO-11
.
A/T FLUID COOLER FINAL INSPECTION
After performing all procedures, ensure that all remaining oil is cleaned from all components.
SCIA2967E
SCIA5659E

A/T CONTROL SYSTEM
AT-19
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A/T CONTROL SYSTEM
Cross-Sectional ViewINFOID:0000000001703161
Shift MechanismINFOID:0000000001703162
CONSTRUCTION
1. Converter housing 2. Oil pump 3. Brake band
4. Reverse clutch 5. High clutch 6. Front planetary gear
7. Low one-way clutch 8. Rear planetary gear 9. Forward clutch
10. Overrun clutch 11. Low & reverse brake 12. Output gear
13. Band servo piston 14. Reverse clutch drum 15. 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
SCIA7938E

AT-20
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
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
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 en-
gine revolution.
19Low & reverse brake L & R/B To lock front planetary carrier 10.
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 re-
lease4th ap-
ply
PPA R K
POSITION
RREVERSE
POSITION
NNEUTRAL
POSITION
D*4 1st *1D B B

A/T CONTROL SYSTEM
AT-21
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• *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 “progressive” 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
21stBB
Automatic
shift
1 ⇔ 2 ⇐ 3 2ndB
3rd *2C C B
11stBB
Locks (held
stationary)
in 1st speed
1 ⇐ 2 ⇐ 3 2ndB
3rd *2C C B 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 re-
lease4th ap-
ply
SAT991I

AT-22
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
“D1” 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 brakeAs 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 clutchRear 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 throttle 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.

A/T CONTROL SYSTEM
AT-23
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P “D
2”, “22” and “12” Positions
*: Overrun clutch remains in engaged condition when throttle opening is less than 1/16.
SAT377J
•Forward clutch
•Forward one-way
clutch
•Brake bandRear sun gear drives rear planetary carrier and combined front internal gear. Front internal gear now rotates
around front sun gear accompanying front planetary carrier.
As front planetary carrier transfers the power to rear internal gear through forward clutch and forward one-
way clutch, this rotation of rear internal gear increases the speed of rear planetary carrier compared with
that of the 1st speed.
Overrun clutch
engagement conditionsD
2: OD OFF (OD OFF indicator lamp is on) and throttle opening is less than specification*
2
2 and 12: Always engaged

AT-24
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
“D3”, “23” and “13” Positions
*: Overrun clutch remains in engaged condition when throttle opening is less than 1/16.
SAT378J
•High clutch
•Forward clutch
•Forward one-way
clutchInput power is transmitted to front planetary carrier through high clutch. And front planetary carrier is con-
nected to rear internal gear by operation of forward clutch and forward one-way clutch.
This rear internal gear rotation and another input (the rear sun gear) accompany rear planetary carrier to
turn at the same speed.
Overrun clutch
engagement conditionsD
3: OD OFF (OD OFF indicator lamp is on) and throttle opening is less than specification*
2
3 and 13: Always engaged

A/T CONTROL SYSTEM
AT-25
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P “D
4” (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 brakeAt D
4 position, there is no one-way clutch in the power transaxle line and engine brake
can be obtained when decelerating.

AT-26
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
“R” Position
SAT380J
•Reverse clutch
•Low & reverse brakeFront planetary carrier is stationary because of the operation of low and reverse brake.
Input power is transmitted to front sun gear through reverse clutch, which drives front
internal gear in the opposite direction.
Engine brakeAs there is no one-way clutch in the power transaxle line, engine brake can be obtained
when decelerating.