NISSAN NAVARA 2005 Repair Repair Manual

TROUBLE DIAGNOSIS
AT-43
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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

AT-44
TROUBLE DIAGNOSIS
CAUTION:
Run the engine at idle for at least 1 minute.
9. Repeat steps 5 through 8 with selector lever in “3”, “2”, “1” and “R” positions.
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(122to
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. After warming up remove the oil pressure detection plug and
install the oil pressure gauge (ST2505S001).
CAUTION:
When using the oil pressure gauge, be sure to use O-ring
attached to the oil pressure detection plug.
Selector lever position
Expected problem location
“D”, “3”, “2”
and “1”“R”
Stall rotationHO
lForward brake
lForward one-way clutch
l1st one-way clutch
l3rd one-way clutch
OH
lReverse brake
LL
lEngine and torque converter one-way clutch
HH
lLine pressure low
Does not shift-up “D” position 1®2 Slipping in 2nd, 3rd or 4th gear Direct clutch slippage
Does not shift-up “D” position 2®3 Slipping in 3rd, 4th or 5th gear High and low reverse clutch slippage
Does not shift-up “D” position 3®4 Slipping in 4th or 5th gear Input clutch slippage
Does not shift-up “D” position 4®5 Slipping in 5th gear Front brake slippage
SCIA2187E
SCIA0574E

TROUBLE DIAGNOSIS
AT-45
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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

AT-46
TROUBLE DIAGNOSIS
ROAD TEST
Description
lThe road test inspects overall performance of A/T and analyzes possible malfunction causes.
lThe road test is perform in the following three stages.
1. Check before engine is started. Refer toAT-46
.
2. Check at idle. Refer toAT-47
.
3. Cruise test.
lInspect all the items from Part 1 to Part 3. Refer toAT-48,AT-50,AT-51.
lBefore beginning the road test, check the test procedure and inspection items.
lTest all inspection items until the symptom is uncovered. Diagnose NG items when all road tests are com-
plete.
CheckBeforeEngineIsStartedECS00FX1
1.CHECK OD OFF INDICATOR LAMP
1. Park vehicle on level surface.
2. Move selector lever to “P” position.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does OD OFF indicator lamp light up for about 2 seconds?
YES >> 1. Turn ignition switch OFF.
2. Perform self-diagnosis and record all NG items onAT-38, "
DIAGNOSTIC WORKSHEET".
Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "TCM SELF-DIAGNOSTIC
PROCEDURE (WITHOUT CONSULT-II)".
3. Go toAT-47, "
Check at Idle".
NO >> Stop the road test and go toAT- 1 7 7 , "
OD OFF Indicator Lamp Does Not Come On".
Stall speedOil pressure does not
rise higher than the oil
pressure for idle.Possible causes include a sensor malfunction or malfunction in the pressure adjustment
function.
For example
lAccelerator pedal position signal malfunction
lTCM malfunction
lLine pressure solenoid malfunction (shorting, sticking in ON state)
lPressure regulator valve or plug sticking
lPilot valve sticking or pilot filter clogged
The pressure rises, but
does not enter the stan-
dard position.Possible causes include malfunctions in the pressure supply system and malfunction in the
pressure adjustment function.
For example
lAccelerator pedal position signal malfunction
lLine pressure solenoid malfunction (sticking, filter clog)
lPressure regulator valve or plug sticking
lPilot valve sticking or pilot filter clogged
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. Judgement Possible cause

TROUBLE DIAGNOSIS
AT-47
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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.

AT-48
TROUBLE DIAGNOSIS
6.CHECK “R” POSITION FUNCTIONS
1. Engage the brake.
2. Move selector lever to “R” position.
3. Release the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES >> GO TO 7.
NO >> Enter a check mark at “Vehicle Does Not Creep Backward in “R” Position” onAT-38, "
DIAGNOS-
TIC WORKSHEET", then continue the road test.
7.CHECK “D” POSITION FUNCTIONS
Inspect whether the vehicle creep forward when the A/T is put into the “D” position.
Does the vehicle creep forward in
“D”position?
YES >> Go toAT-48, "Cruise Test - Part 1",AT-50, "Cruise Test - Part 2"andAT-51, "Cruise Test - Part 3"
.
NO >> Enter a check mark at “Vehicle Does Not Creep Forward in “D” Position” onAT-38, "
DIAGNOSTIC
WORKSHEET", then continue the road test. Go toAT-48, "Cruise Test - Part 1",AT-50, "Cruise
Te s t - P a r t 2"andAT-51, "Cruise Test - Part 3".
CruiseTest-Part1ECS00FX3
1.CHECK STARTING OUT FROM D1
1. Drive the vehicle for about 10 minutes to warm up the engine oil and ATF.
Appropriate temperature for the ATF: 50 - 80°C (122 - 176°F)
2. Park the vehicle on a level surface.
3. Move selector lever to “P” position.
4. Start engine.
5. Move selector lever to “D” position.
6. Press accelerator pedal about half-way down to accelerate the vehicle.
With CONSULT-II
Read the gear position. Refer toAT-83, "
DATA MONITOR MODE".
Starts from D
1?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Cannot Be Started from D
1”onAT-38, "DIAGNOSTIC WORK-
SHEET", then continue the road test.
2.CHECK SHIFT-UP D1®D2
Press down accelerator pedal about half-way and inspect if the vehicle shifts up (D1®D2) at the appropriate
speed. Refer toAT-52, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-II
Read the gear position, throttle degree and vehicle speed. Refer toAT-83, "
DATA MONITOR MODE".
Does the A/T shift-up D
1®D2at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T Does Not Shift: D
1®D2”onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test.

TROUBLE DIAGNOSIS
AT-49
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3.CHECK SHIFT-UP D2®D3
Press down accelerator pedal about half-way and inspect if the vehicle shifts up (D2®D3) at the appropriate
speed. Refer toAT-52, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-II
Read the gear position, throttle degree and vehicle speed. Refer toAT-83, "
DATA MONITOR MODE".
Does the A/T shift-up D
2®D3at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at “A/T Does Not Shift: D
2®D3”onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test.
4.CHECK SHIFT-UP D3®D4
Press down accelerator pedal about half-way and inspect if the vehicle shifts up (D3®D4) at the appropriate
speed. Refer toAT-52, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-II
Read the gear position, throttle degree and vehicle speed. Refer toAT-83, "
DATA MONITOR MODE".
Does the A/T shift-up D
3®D4at the correct speed?
YES >> GO TO 5.
NO >> Enter a check mark at “A/T Does Not Shift: D
3®D4”onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test.
5.CHECK SHIFT-UP D4®D5
Press down accelerator pedal about half-way and inspect if the vehicle shifts up (D4®D5) at the appropriate
speed. Refer toAT-52, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-II
Read the gear position, throttle degree and vehicle speed. Refer toAT-83, "
DATA MONITOR MODE".
Does the A/T shift-up D
4®D5at the correct speed?
YES >> GO TO 6.
NO >> Enter a check mark at “A/T Does Not Shift: D
4®D5”onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test.
6.CHECK LOCK-UP
When releasing accelerator pedal (closed throttle position signal: OFF) from D
5, check lock-up from D5to L/
U. Refer toAT-52, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-II
Select “TCC SOLENOID” with “MAIN SIGNALS” mode for “A/T”. Refer toAT-77, "
CONSULT-II REFERENCE
VA L U E".
Does it lock-up?
YES >> GO TO 7.
NO >> Enter a check mark at “A/T Does Not Perform Lock-up” onAT- 3 8 , "
DIAGNOSTIC WORKSHEET"
, then continue the road test.
7.CHECK LOCK-UP HOLD
Check hold lock-up.
With CONSULT-II
Select “TCC SOLENOID” with “MAIN SIGNALS” mode for “A/T”. Refer toAT-77, "
CONSULT-II REFERENCE
VA L U E".
Does it maintain lock-up status?
YES >> GO TO 8.
NO >> Enter a check mark at “A/T Does Not Hold Lock-up Condition” onAT-38, "
DIAGNOSTIC WORK-
SHEET", then continue the road test.

AT-50
TROUBLE DIAGNOSIS
8.CHECK LOCK-UP RELEASE
Check lock-up cancellation by depressing brake pedal lightly to decelerate.
With CONSULT-II
Select “TCC SOLENOID” with “MAIN SIGNALS” mode for “A/T”. Refer toAT-77, "
CONSULT-II REFERENCE
VA L U E".
Does lock-up cancel?
YES >> GO TO 9.
NO >> Enter a check mark at “Lock-up Is Not Released” onAT-38, "
DIAGNOSTIC WORKSHEET",then
continue the road test.
9.CHECK SHIFT-DOWN D5®D4
Decelerate by pressing lightly on brake pedal.
With CONSULT-II
Read the gear position and engine speed. Refer toAT-83, "
DATA MONITOR MODE".
When the A/T shift-down D
5®D4, does the engine speed drop smoothly back to idle?
YES >> 1. Stop the vehicle.
2. Go toAT-50, "
Cruise Test - Part 2".
NO >> Enter a check mark at “Engine Speed Does Not Return to Idle” onAT-38, "
DIAGNOSTIC WORK-
SHEET", then continue the road test. Go toAT-50, "Cruise Test - Part 2".
CruiseTest-Part2ECS00FX4
1.CHECK STARTING FROM D1
1. Move selector lever to “D” position.
2. Accelerate at half throttle.
With CONSULT-II
Read the gear position. Refer toAT-83, "
DATA MONITOR MODE".
Does it start from D
1?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Cannot Be Started from D
1”onAT-38, "DIAGNOSTIC WORK-
SHEET", then continue the road test.
2.CHECK SHIFT-UP D1®D2
Press accelerator pedal down all the way and inspect whether or not the A/T shifts up (D1®D2)atthecor-
rect speed. Refer toAT-52, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-II
Read the gear position, throttle degree and vehicle speed. Refer toAT-83, "
DATA MONITOR MODE".
Does the A/T shift-up D
1®D2at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T Does Not Shift: D
1®D2”onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test.
3.CHECK SHIFT-UP D2®D3
Press accelerator pedal down all the way and inspect whether or not the A/T shifts up (D2®D3)atthecor-
rect speed. Refer toAT-52, "
Vehicle Speed at Which Gear Shifting Occurs".
With CONSULT-II
Read the gear position, throttle degree and vehicle speed. Refer toAT-83, "
DATA MONITOR MODE".
Does the A/T shift-up D
2®D3at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at “A/T Does Not Shift: D
2®D3”onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test.

TROUBLE DIAGNOSIS
AT-51
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4.CHECK SHIFT-UP D3®D4AND ENGINE BRAKE
When the A/T changes speed D
3®D4, return accelerator pedal.
With CONSULT-II
Read the gear position. Refer toAT-83, "
DATA MONITOR MODE".
Does the A/T shift-up D
3®D4and apply the engine brake?
YES >> 1. Stop the vehicle.
2. Go toAT-51, "
Cruise Test - Part 3".
NO >> Enter a check mark at “A/T Does Not Shift: D
3®D4”onAT-38, "DIAGNOSTIC WORKSHEET",
then continue the road test. Go toAT-51, "
Cruise Test - Part 3".
Cruise Test - Part 3ECS00FX5
1.CHECK SHIFT-DOWN
1. Confirm overdrive control switch is ON position.
2. Confirm gear selector lever is in “D” position.
3. Accelerate vehicle using half-throttle to D
5.
4. Release accelerator pedal.
5. Set overdrive control switch to OFF position while driving in D
5.
With CONSULT-II
Read the gear position. Refer toAT-83, "
DATA MONITOR MODE".
Does A/T shift from D
5to D4(OD OFF)?
YES >> GO TO 2.
NO >> Enter a check mark at “A/T does not shift: 5th gear®4th gear” on theAT-38, "
DIAGNOSTIC
WORKSHEET", then continue the road test.
2.CHECK SHIFT-DOWN
During D
4driving, is downshift from “D”®“3”®“2”®“1” performed?
With CONSULT-II
Read the gear position. Refer toAT-83, "
DATA MONITOR MODE".
Is downshifting correctly performed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T does not shift” at the corresponding position (4th®3rd, 3rd®2nd,
2nd®1st) on theAT-38, "
DIAGNOSTIC WORKSHEET", then continue the road test.
3.CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in 1
1position?
YES >> 1. Stop the vehicle.
2. Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diag-
nostic Procedure Without CONSULT-II".
NO >> Enter a check mark at “Vehicle Does Not Decelerate by Engine Brake” on theAT-38, "
DIAGNOS-
TIC WORKSHEET", then continue trouble diagnosis.

AT-52
TROUBLE DIAGNOSIS
Vehicle Speed at Which Gear Shifting Occurs
ECS00FX6
2WD MODELS
lAt half throttle, the accelerator opening is 4/8 of the full opening.
4WD MODELS
lAt half throttle, the accelerator opening is 4/8 of the full opening.
Vehicle Speed at Which Lock-up Occurs/ReleasesECS00FX7
2WD MODELS
lAt closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)
lAt half throttle, the accelerator opening is 4/8 of the full opening.
4WD MODELS
lAt closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)
lAt half throttle, the accelerator opening is 4/8 of the full opening.Tire sizeThrottle
positionVehicle speed [km/h (MPH)]
D
1®D2D2®D3D3®D4D4®D5D5®D4D4®D3D3®D2D2®D1
255/65 R17
255/70 R16Full
throttle41 - 45
(25 - 28)66 - 72
(41 - 45)103 - 113
(64 - 70)148 - 164
(92 - 102)144 - 160
(89 - 99)92 - 102
(57 - 63)53 - 59
(33 - 37)23 - 24
(14 - 15)
Half
throttle34 - 38
(21 - 24)55 - 61
(34 - 38)86 - 96
(53 - 60)118 - 130
(73 - 81)88 - 98
(55 - 61)60 - 66
(37 - 41)39 - 43
(24 - 27)10 - 11
(6 - 7)
Tire sizeThrottle
positionVehiclespeed [km/h(MPH)]
D1®D2D2®D3D3®D4D4®D5D5®D4D4®D3D3®D2D2®D1
255/65 R17
255/70 R16Full
throttle38 - 42
(24 - 26)62 - 68
(39 - 42)97 - 107
(60 - 66)141 - 155
(88 - 96)137 - 151
(85 - 94)87 - 97
(54 - 60)50 - 56
(31 - 35)22 - 24
(14 - 15)
Half
throttle32 - 36
(20 - 22)52 - 58
(32 - 36)82 - 90
(51 - 56)117 - 129
(73 - 80)83 - 91
(52 - 57)57 - 63
(35 - 39)37 - 41
(23 - 25)10 - 11
(6 - 7)
265/70 R16LTFull
throttle40 - 44
(25 - 27)65 - 71
(40 - 44)101 - 111
(63 - 69)145 - 161
(90 - 100)142 - 156
(88 - 97)90 - 100
(56 - 62)52 - 58
(32 - 36)23 - 25
(14 - 16)
Half
throttle33 - 37
(21 - 23)54 - 60
(34 - 37)85 - 93
(53 - 58)121 - 133
(75 - 83)85 - 95
(53 - 59)59 - 65
(37 - 40)38 - 42
(24 - 26)10 - 11
(6 - 7)
Tire size Throttle positionVehicle speed [km/h (MPH)]
Lock-up ON Lock-up OFF
255/65 R17
255/70 R16Closed throttle 73 - 81 (45 - 50) 70 - 78 (44 - 48)
Half throttle 141 - 155 (88 - 96) 130 - 144 (81 - 89)
Tire size Throttle positionVehicle speed [km/h (MPH)]
Lock-up ON Lock-up OFF
255/65 R17
255/70 R16Closed throttle 69 - 77 (43 - 48) 66 - 74 (41 - 46)
Half throttle 134 - 148 (83 - 92) 123 - 137 (76 - 85)
265/70 R16LTClosed throttle 72 - 80 (45 - 50) 69 - 77 (43 - 48)
Half throttle 139 - 153 (86 - 95) 128 - 142 (80 - 88)