Nissan Pathfinder (2010 year). Manual — part 629

TM-160

< ON-VEHICLE MAINTENANCE >

A/T FLUID

8. Insert the tip of an air gun into the end of the cooler outlet hose.
9. Wrap a shop rag around the air gun tip and end of cooler outlet

hose.

10. Blow compressed air regulated to 5 - 9 kg/cm

2

(70 - 130 psi)

through the cooler outlet hose to force any remaining A/T fluid

into the coffee filter.

11. Remove the coffee filter from the end of the cooler inlet hose.
12. Perform A/T fluid cooler inspection. Refer to

TM-155, "Checking

the A/T Fluid (ATF)"

.

A/T FLUID COOLER INSPECTION PROCEDURE

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 fluid cooler is not serviceable. The A/T fluid

cooler/radiator must be replaced and the inspection procedure is

ended. Refer to

CO-16, "Removal and Installation"

for

(VQ40DE)

CO-44, "Removal and Installation"

for (VK56DE).

A/T FLUID COOLER FINAL INSPECTION

After performing all procedures, ensure that all remaining oil is cleaned from all components.

SCIA3834E

SCIA2967E

SCIA5659E

2010 Pathfinder

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

TM-161

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INSPECTIONS BEFORE TROUBLE DIAGNOSIS

Fluid Condition Check

INFOID:0000000005258174

A/T FLUID CHECK

Fluid Leakage and Fluid Level Check

• Inspect for fluid leakage and check the fluid level. Refer to

TM-157, "Changing the A/T Fluid (ATF)"

.

Fluid Condition Check

Inspect the fluid condition.

Stall Test

INFOID:0000000005258175

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/

T fluid temperature is 50 to 80

°

C (122 to 176

°

F). Inspect the

amount of ATF. Replenish if necessary.

3. Securely engage the parking brake so that the tires do not turn.

Fluid condition

Conceivable Cause

Required Operation

Varnished (viscous
varnish state)

Clutch, brake
scorched

Replace 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 fluid

Replace the ATF and check for plac-
es where water is getting in.

Large amount of
metal powder mixed
in

Unusual wear of
sliding parts within
A/T

Replace the ATF and check for im-
proper operation of the A/T.

SAT638A

SAT647B

SCIA7463E

2010 Pathfinder

TM-162

< ON-VEHICLE MAINTENANCE >

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

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 the selector lever to the “N” position.
8. Cool down the ATF.

CAUTION:

Run the engine at idle for at least one minute.

9. Repeat steps 5 through 8 with selector lever in “R” position.

Judgment 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

INFOID:0000000005258176

LINE PRESSURE TEST

Line Pressure Test Port

Line Pressure Test Procedure

1. Inspect the amount of engine oil and replenish if necessary.

Stall speed:

TM-280, "Stall Speed"

SAT514G

Selector lever position

Expected problem location

D

R

Stall rotation

H

O

• 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 position 1

→

2

Slipping in 2GR, 3GR, 4GR

Direct clutch slippage

Does not shift-up D position 2

→

3

Slipping in 3GR, 4GR, 5GR

High and low reverse clutch slippage

Does not shift-up D position 3

→

4

Slipping in 4GR, 5GR

Input clutch slippage

Does not shift-up D position 4

→

5

Slipping in 5GR

Front brake slippage

SCIA2187E

2010 Pathfinder

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

TM-163

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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 automatic 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(J-34301-C)].

CAUTION:

When using the oil pressure gauge, be sure to use the O-

ring attached to the oil pressure detection plug.

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:

• Keep the brake pedal pressed all the way down during

measurement.

• When measuring the line pressure at the stall speed, refer

to “STALL TEST”.

6. After the measurements are complete, install the oil pressure

detection plug and tighten to the regulation torque below.

CAUTION:

• Do not reuse the O-ring.

• Apply ATF to O-ring.

Line Pressure

Judgment of Line Pressure Test

SCIA5309E

SCIA7463E

:7.3 N·m (0.74 kg-m, 65 in-lb)

SAT493G

Engine speed

Line pressure [kPa (kg/cm

2

, psi)]

“R” position

“D” position

At idle speed

TM-280, "Line Pressure"

At stall speed

2010 Pathfinder

TM-164

< ON-VEHICLE MAINTENANCE >

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

Judgment Possible

cause

Idle speed

Low for all positions
(P, R, N, D)

Possible causes include malfunctions in the pressure supply system and low oil pump output.
For example
• Oil pump wear
• Pressure regulator valve or plug sticking or spring fatigue
• Oil strainer

⇒

oil pump

⇒

pressure regulator valve passage oil leak

• Engine idle speed too low

Only low for a spe-
cific position

Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.

High

Possible causes include a sensor malfunction or malfunction in the line pressure adjustment func-
tion.
For example
• Accelerator pedal position signal malfunction
• ATF temperature sensor malfunction
• Line pressure solenoid malfunction (sticking in “OFF” state, filter clog, cut line)
• Pressure regulator valve or plug sticking

Stall speed

Oil 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
• Accelerator pedal position signal malfunction
• TCM breakdown
• Line pressure solenoid malfunction (shorting, sticking in“ ON” state)
• Pressure regulator valve or plug sticking
• Pilot valve sticking or pilot filter clogged

The pressure rises,
but does not enter
the standard posi-
tion.

Possible causes include malfunctions in the pressure supply system and malfunction in the pres-
sure adjustment function.
For example
• Accelerator pedal position signal malfunction
• Line pressure solenoid malfunction (sticking, filter clog)
• Pressure regulator valve or plug sticking
• Pilot valve sticking or pilot filter clogged

Only low for a spe-
cific position

Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.

2010 Pathfinder

ROAD TEST

TM-165

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ROAD TEST

Check Before Engine Is Started

INFOID:0000000005258177

1.

CHECK O/D OFF INDICATOR LAMP (WITHOUT MANUAL MODE) OR A/T CHECK INDICATOR LAMP

(WITH MANUAL MODE)

1. Park vehicle on level surface.

2. Move selector lever to “P” position.

3. Turn ignition switch to “OFF” position and wait at least 10 seconds.

4. Turn ignition switch to “ON” position. (Do not start engine.)
Does O/D OFF indicator lamp or A/T CHECK indicator lamp light up for about 2 seconds?

YES

>> 1. Turn ignition switch “OFF”.

2. Perform self-diagnostics and record all NG items on the

TM-7, "Diagnostic Work Sheet"

.

Refer to

TM-36, "CONSULT-III Function (TRANSMISSION)"

,

TM-41, "Diagnosis Procedure

without CONSULT-III"

.

3. Go to

TM-165, "Check at Idle"

.

NO

>> Stop the test and go to

TM-127, "Symptom Chart"

.

Check at Idle

INFOID:0000000005258178

1.

CHECK STARTING THE ENGINE

1. Park vehicle on level surface.

2. Move selector lever to “P” or “N” position.

3. Turn ignition switch to “OFF” position.

4. Turn ignition switch to “START” position.
Does the engine start?

YES

>> GO TO 2.

NO

>> Stop the road test and go to

TM-127, "Symptom Chart"

.

2.

CHECK VEHICLE EQUIPMENT

Is vehicle equipped with manual mode shifter?
YES or NO?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK STARTING THE ENGINE

1. Turn ignition switch to “ON” position.

2. Move selector lever in “D”, "M" and “R” position.

3. Turn ignition switch to “START” position.
Does the engine start in either position?

YES

>> Stop the road test and go to

TM-127, "Symptom Chart"

.

NO

>> GO TO 5.

4.

CHECK STARTING THE ENGINE

1. Turn ignition switch to “ON” position.

2. Move selector lever in “D”, “3”, “2”, “1” or “R” position.

3. Turn ignition switch to “START” position.
Does the engine start in either position?

YES

>> Stop the road test and go to

TM-127, "Symptom Chart"

.

NO

>> GO TO 5.

5.

CHECK “P” POSITION FUNCTIONS

Without manual mode

1. Move selector lever to “P” position.

2. Turn ignition switch to “OFF” position.

3. Release the parking brake.

4. Push the vehicle forward or backward.

2010 Pathfinder

TM-166

< ON-VEHICLE MAINTENANCE >

ROAD TEST

5. Engage the parking brake.
When you push the vehicle with disengaging the parking brake, does it move?

YES

>> Record the malfunction, GO TO 6.

NO

>> GO TO 6.

6.

CHECK “N” POSITION FUNCTIONS

1. Start the engine.

2. Move selector lever to “N” position.

3. Release the parking brake.
Does vehicle move forward or backward?

YES

>> Record the malfunction, GO TO 7.

NO

>> GO TO 7.

7.

CHECK SHIFT SHOCK

1. Engage the brake.

2. Move selector lever to “D” position.
When the transmission is shifted from “N” to “D”, is there an excessive shock?

YES

>> Record the malfunction, GO TO 8.

NO

>> GO TO 8.

8.

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 9.

NO

>> Record the malfunction, GO TO 9.

9.

CHECK “D” POSITION FUNCTIONS

Inspect whether the vehicle creep forward when the transmission is put into the “D” position.
Does the vehicle creep forward in the “D” positions?

YES

>> Go to

TM-166, "Cruise Test - Part 1"

.

NO

>> Record the malfunction and go to

TM-166, "Cruise Test - Part 1"

.

Cruise Test - Part 1

INFOID:0000000005258179

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 the engine.

5. Set overdrive control switch to ON position (without manual mode).

6. Move selector lever to “D” position.

7. Press the accelerator pedal about half way down to accelerate the vehicle.

With CONSULT-III

Read off the gear positions.
Starts from D1?

YES

>> GO TO 2.

NO

>> Record the malfunction, GO TO 2.

2.

CHECK SHIFT-UP D1

→

D2

Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D1

→

D2) at the appropri-

ate speed.

• Refer to

TM-279, "Vehicle Speed at Which Gear Shifting Occurs"

.

With CONSULT-III

Read the gear position, throttle degree of opening, and vehicle speed.

2010 Pathfinder

ROAD TEST

TM-167

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Does the A/T shift-up D1

→

D2 at the correct speed?

YES

>> GO TO 3.

NO

>> Record the malfunction, GO TO 3.

3.

CHECK SHIFT-UP D2

→

D3

Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D2

→

D3) at the appropri-

ate speed.

• Refer to

TM-279, "Vehicle Speed at Which Gear Shifting Occurs"

.

With CONSULT-III

Read the gear position, throttle degree of opening, and vehicle speed.
Does the A/T shift-up D2

→

D3 at the correct speed?

YES

>> GO TO 4.

NO

>> Record the malfunction, GO TO 4.

4.

CHECK SHIFT-UP D3

→

D4

Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D3

→

D4) at the appropri-

ate speed.

• Refer to

TM-279, "Vehicle Speed at Which Gear Shifting Occurs"

.

With CONSULT-III

Read the gear position, throttle degree of opening, and vehicle speed.
Does the A/T shift-up D3

→

D4 at the correct speed?

YES

>> GO TO 5.

NO

>> Record the malfunction, GO TO 5.

5.

CHECK SHIFT-UP D4

→

D5

Press down the accelerator pedal about half way and inspect if the vehicle shifts up (D4

→

D5) at the appropri-

ate speed.

• Refer to

TM-279, "Vehicle Speed at Which Gear Shifting Occurs"

.

With CONSULT-III

Read the gear position, throttle degree of opening, and vehicle speed.
Does the A/T shift-up D4

→

D5 at the correct speed?

YES

>> GO TO 6.

NO

>> Record the malfunction, GO TO 6.

6.

CHECK LOCK-UP

When releasing accelerator pedal from D5 (closed throttle position signal: OFF), check lock-up from D5 to L/U.

• Refer to

TM-280, "Vehicle Speed at Which Lock-up Occurs/Releases"

.

With CONSULT-III

Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “TRANSMISSION”.
Does it lock-up?

YES

>> GO TO 7.

NO

>> Record the malfunction, GO TO 7.

7.

CHECK LOCK-UP HOLD

Check hold lock-up.

With CONSULT-III

Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “TRANSMISSION”.
Does it maintain lock-up status?

YES

>> GO TO 8.

NO

>> Record the malfunction, GO TO 7.

8.

CHECK LOCK-UP RELEASE

Check lock-up cancellation by depressing brake pedal lightly to decelerate.

With CONSULT-III

Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “TRANSMISSION”.
Does lock-up cancel?

2010 Pathfinder