shaft INFINITI FX35 2008 User Guide
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2008, Model line: FX35, Model: INFINITI FX35 2008Pages: 3924, PDF Size: 81.37 MB
Page 96 of 3924
A/T CONTROL SYSTEMAT-23
< SERVICE INFORMATION >
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“D
2” Position
The forward brake and the forward one-way clutch
regulate reverse rotation of the mid sun gear.
The 3rd one-way clutch regulates reverse rotation of the front sun gear.
The direct clutch is coupled, and the rear carrier and rear sun gear are connected.
During deceleration, the mid sun gear turns forward, so the forward one-way clutch idles and engine brake is
not activated.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
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Page 97 of 3924
AT-24
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
“M2” Position
The front brake fastens the front sun gear.
The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.
The direct clutch is coupled, and the rear carrier and rear sun gear are connected.
The low coast brake fastens the mid sun gear.
During deceleration, the low coast brake regulates forward rotation of the mid sun gear and the engine brake
functions.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
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A/T CONTROL SYSTEMAT-25
< SERVICE INFORMATION >
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“D
3” and “M3” Positions
The front brake fastens the front sun gear.
The direct clutch is coupled, and the rear carrier and rear sun gear are connected.
The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
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Page 99 of 3924
AT-26
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
“D4” and “M4” Positions
The direct clutch is coupled, and the rear carrier and rear sun gear are connected.
The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.
The input clutch is coupled, and the front in ternal gear and mid internal gear are connected.
The drive power is conveyed to the front internal gear, mid internal gear, and rear carrier and the three plan-
etary gears rotate forward as one unit.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
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A/T CONTROL SYSTEMAT-27
< SERVICE INFORMATION >
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“D
5” and “M5” Positions
The front brake fastens the front sun gear.
The input clutch is coupled, and the front internal gear and mid internal gear are connected.
The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
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Page 101 of 3924
AT-28
< SERVICE INFORMATION >
A/T CONTROL SYSTEM
“R” Position
The front brake fastens the front sun gear.
The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.
The reverse brake fastens the rear carrier.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
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A/T CONTROL SYSTEMAT-29
< SERVICE INFORMATION >
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TCM FunctionINFOID:0000000001327135
The function of the TCM is to:
Receive input signals sent from various switches and sensors.
Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating condi tions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
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SENSORS (or SIGNALS)
⇒TCM
⇒ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Manual mode switch signal
Stop lamp switch signal
Turbine revolution sensor
ATF pressure switch Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-III co
mmunication
line
Duet-EA control
CAN system Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch sole-
noid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay
:
Page 124 of 3924
TROUBLE DIAGNOSISAT-51
< SERVICE INFORMATION >
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9. Repeat steps 5 through 8 with selector lever in “R” position.
Judgement of Stall Test
O: Stall speed within standard value position
H: Stall speed higher than standard value
L: Stall speed lower than standard value
Stall test standard value position
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the ATF reaches in range of 50 to 80°C (122 to
176 °F), then inspect the amount of ATF and replenish if necessary.
NOTE:
The A/T fluid temperature rises in range of 50 to 80°C (122 to 176 °F) during 10 minutes of driving.
3. Remove the front propeller shaft from vehicle (with AWD models). Refer to PR-4, "
Removal and Installa-
tion".
4. After warming up remove the oil pressure detection plug and install the oil pressure gauge [ST2505S001(J-34301-C)].
CAUTION:
When using the oil pressure ga uge, be sure to use the O-
ring attached to the oil pressure detection plug.
Selector lever position Expected problem location
“D”, “M” “R”
Stall speed HO
Forward brake
Forward one-way clutch
1st one-way clutch
3rd one-way clutch
O H Reverse brake L L Engine and torque converter one-way clutch
H H Line pressure low
Does not shift-up “D ” or “M” position 1 → 2 Slipping in 2nd, 3rd or 4th gear Direct clutch slippage
Does not shift-up “D ” or “M” position 2 → 3 Slipping in 3rd, 4th or 5th gear High and low reverse clutch slippage
Does not shift-up “D ” or “M” position 3 → 4 Slipping in 4th or 5th gear Input clutch slippage
Does not shift-up “D ” or “M” position 4 → 5 Slipping in 5th gear Front brake slippage
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Page 146 of 3924
TROUBLE DIAGNOSISAT-73
< SERVICE INFORMATION >
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36
Slips/Will
Not En-
gage With selector lever in
“R” position
, accelera-
tion is extremely poor. ON vehicle1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. High and low reverse clutch solenoid valveAT- 1 4 9
5. CAN communication line AT- 9 4
6. PNP switchAT- 1 0 2
7. A/T positionAT- 2 0 7
8. Control valve with TCMAT- 2 1 5
OFF vehicle9. Gear system
AT- 2 4 910. Output shaft AT- 2 6 7
11. Reverse brakeAT- 2 6 7
37While starting off by
accelerating in 1st, en-
gine races or slippage
occurs. ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. CAN communication line AT- 9 4
5. Control valve with TCMAT- 2 1 5
OFF vehicle6. Torque converter
AT- 2 6 7
7. Oil pump assemblyAT- 2 8 5
8. 3rd one-way clutchAT- 2 8 7
9. 1st one-way clutchAT- 2 9 5
10. Gear systemAT- 2 4 9
11. Reverse brakeAT- 2 6 7
12. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to AT-
16, "Cross-Sectional View (2WD Models)", AT- 1 7 , "Cross-
Sectional View (VQ35DE Models for AWD)" or AT- 1 8 , "Cross-
Sectional View (VK45DE Models for AWD)") AT- 2 6 7
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
No. Items Symptom Condition Diagnostic Item
Reference
page
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Page 149 of 3924
AT-76
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
43Slips/Will
Not En-
gage No creep at all.
Refer to
AT- 1 7 5 , "
Ve-
hicle Does Not Creep
Backward in "R" Posi-
tion", AT- 1 7 8 , "Vehicle
Does Not Creep For-
ward in "D" Position"
ON vehicle 1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. Direct clutch solenoid valveAT- 1 4 7
5. PNP switchAT- 1 0 2
6. CAN communication line AT- 9 4
7. A/T positionAT- 2 0 7
8. Control valve with TCMAT- 2 1 5
OFF vehicle9. Torque converter
AT- 2 6 7
10. Oil pump assemblyAT- 2 8 5
11. 1st one-way clutchAT- 2 9 5
12. Gear systemAT- 2 4 9
13. Reverse brakeAT- 2 6 7
14. Direct clutchAT- 3 0 3
15. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to AT-
16, "Cross-Sectional View (2WD Models)", AT- 1 7 , "Cross-
Sectional View (VQ35DE Models for AWD)" or AT- 1 8 , "Cross-
Sectional View (VK45DE Models for AWD)") AT- 2 6 7
16. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
44
Vehicle cannot run in
all positions. ON vehicle1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. PNP switchAT- 1 0 2
4. A/T positionAT- 2 0 7
5. Control valve with TCMAT- 2 1 5
OFF vehicle6. Oil pump assembly
AT- 2 8 57. Gear systemAT- 2 4 9
8. Output shaftAT- 2 6 7
No. Items Symptom Condition Diagnostic Item Reference
page
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