2005 NISSAN NAVARA parking brake

AT-22
A/T CONTROL SYSTEM
“2” and “1” Positions 2nd Gear
lThe front brake fastens the front sun gear.
lThe forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.
lThe direct clutch is coupled, and the rear carrier and rear sun gear are connected.
lThe low coast brake fastens the mid sun gear.
lDuring 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
SCIA1515E

A/T CONTROL SYSTEM
AT-23
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“D” and “3” Positions 3rd Gear
lThe front brake fastens the front sun gear.
lThe direct clutch is coupled, and the rear carrier and rear sun gear are connected.
lThe 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
SCIA1516E

AT-24
A/T CONTROL SYSTEM
“D” Position 4th Gear
lThe direct clutch is coupled, and the rear carrier and rear sun gear are connected.
lThe high and low reverse clutch is coupled and the mid sun gear and rear sun gear are connected.
lThe input clutch is coupled and the front internal gear and mid internal gear are connected.
lThe drive power is conveyed to the front internal gear, mid internal gear, and rear carrier and the three
planetary 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
SCIA1517E

A/T CONTROL SYSTEM
AT-25
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“D” Position 5th Gear
lThe front brake fastens the front sun gear.
lThe input clutch is coupled and the front internal gear and mid internal gear are connected.
lThe 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
SCIA1518E

AT-26
A/T CONTROL SYSTEM
“R” position
lThe front brake fastens the front sun gear.
lThe high and low reverse clutch is coupled and the mid sun gear and rear sun gear are connected.
lThe 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
SCIA1519E

TROUBLE DIAGNOSIS
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Inspections Before Trouble DiagnosisECS00FX0
A/T FLUID CHECK
A/T Fluid Leakage and A/T Fluid Level Check
Inspect for A/T fluid leakage and check the A/T fluid level. Refer toAT-12, "Checking A/T Fluid".
A/T Fluid Condition Check
Inspect the A/T fluid condition.
STALL TEST
Stall Test Procedure
1. Inspect the amount of engine oil. Replenish the engine oil if necessary.
2. Drive for about 10 minutes to warm up the vehicle so that the A/
Tfluidtemperatureis50to80°C(122to176°F). Inspect the
amount of ATF. Replenish if necessary.
3. Securely engage the parking brake so that the tires do not turn.
4. Engine start, apply foot brake, and place selector lever in “D”
position.
5. While holding down the foot brake, gradually press down the
accelerator pedal.
6. Quickly read off the stall speed, then quickly remove your foot
from the accelerator pedal.
CAUTION:
Do not hold down the accelerator pedal for more than 5 sec-
onds during this test.
7. Move selector lever to the “N” position.
8. Cool down the ATF.
Fluid condition Conceivable Cause Required Operation
Varnished (viscous
varnish state)Clutch, brake
scorchedReplace the ATF and check the A/T
main unit and the vehicle for mal-
functions (wire harnesses, cooler
pipes, etc.)
Milky white or cloudy Water in the fluidReplace the ATF and check for
places where water is getting in.
Large amount of
metal powder mixed
inUnusual wear of
sliding parts within
A/TReplace the ATF and check for
improper operation of the A/T.
SAT638A
SAT647B
SAT513G
Stall speed: 2,700 - 3,100 rpm
SAT514G

TROUBLE DIAGNOSIS
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4. Securely engage the parking brake so that the tires do not turn.
5. Start the engine, then measure the line pressure at both idle and
the stall speed.
CAUTION:
lKeep the brake pedal pressed all the way down during
measurement.
lWhen measuring the line pressure at the stall speed.
Refer toAT-43, "
STALL TEST".
6. After the measurements are complete, install the oil pressure
detection plug and tighten to the specified torque. Refer toAT-
251, "Components".
CAUTION:
lDo not reuse O-ring.
lApply ATF to O-ring.
Line Pressure
Judgement of Line Pressure Test
SAT513G
SAT493G
Engine speedLine pressure [kPa (bar, kg/cm
2,psi)]
“R” position “D” position
At idle speed 425 - 465 (4.3 - 4.6, 4.3 - 4.7, 62 - 67) 379 - 428 (3.8 - 4.3, 3.9 - 4.4, 55 - 62)
At stall speed 1,605 - 1,950 (16.0 - 19.5, 16.4 - 19.9, 233 - 283) 1,310 - 1,500 (13.1 - 15.0, 13.4 - 15.3, 190 - 218)
Judgement Possible cause
Idle speedLow for all positions
(“P”, “R”, “N” and “D”)Possible causes include malfunctions in the pressure supply system and low oil pump output.
For example
lOil pump wear
lPressure regulator valve or plug sticking or spring fatigue
lOil strainer
oil pump
pressure regulator valve passage oil leak
lEngine idle speed too low
Only low for a specific
positionPossible causes include an oil pressure leak in a passage or device related to the position
after the pressure is distributed by the manual valve.
HighPossible causes include a sensor malfunction or malfunction in the line pressure adjustment
function.
For example
lAccelerator pedal position signal malfunction
lA/T fluid temperature sensor malfunction
lLine pressure solenoid malfunction (sticking in OFF state, filter clog, cut line)
lPressure regulator valve or plug sticking

TROUBLE DIAGNOSIS
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Check at IdleECS00FX2
1.CHECK STARTING THE ENGINE
1. Park vehicle on level surface.
2. Move selector lever to “P” or “N” position.
3. Turn ignition switch OFF.
4. Start engine.
Does the engine start?
YES >> GO TO 2.
NO >> Stop the road test and go toAT- 1 7 7 , "
Engine Cannot Be Started in“P”or“N”Position".
2.CHECK STARTING THE ENGINE
1. Turn ignition switch ON.
2. Move selector lever in “D”, “3”, “2”, “1” or “R” position.
3. Start engine.
Does the engine start in any positions?
YES >> Stop the road test and go toAT- 1 7 7 , "Engine Cannot Be Started in“P”or“N”Position".
NO >> GO TO 3.
3.CHECK “P” POSITION FUNCTIONS
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Release the parking brake.
4. Push the vehicle forward or backward.
5. Engage the parking brake.
When you push the vehicle with the parking brake released, does it move?
YES >> Enter a check mark at “In “P” Position Vehicle Moves When Pushed” onAT-38, "DIAGNOSTIC
WORKSHEET", then continue the road test.
NO >> GO TO 4.
4.CHECK “N” POSITION FUNCTIONS
1. Start engine.
2. Move selector lever to “N” position.
3. Release the parking brake.
Does vehicle move forward or backward?
YES >> Enter a check mark at “In “N” Position Vehicle Moves” onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test.
NO >> GO TO 5.
5.CHECK SHIFT SHOCK
1. Engage the brake.
2. Move selector lever to “D” position.
When the A/T is shifted from
“N”to“D”, is there an excessive shock?
YES >> Enter a check mark at “Large Shock (“N” to “D” Position)” onAT-38, "DIAGNOSTIC WORK-
SHEET"the diagnosis worksheet, then continue the road test.
NO >> GO TO 6.