Nissan Frontier D40. Manual - part 1092

TM-266

< ON-VEHICLE MAINTENANCE >

[5AT: RE5R05A]

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-261, "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

(QR25DE) 

CO-43, "Removal and Installation"

 for (VQ40DE).

A/T FLUID COOLER FINAL INSPECTION

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

SCIA3834E

SCIA2967E

SCIA5659E

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

TM-267

< ON-VEHICLE MAINTENANCE >

[5AT: RE5R05A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

Fluid Condition Check

INFOID:0000000005274194

A/T FLUID CHECK

Fluid Leakage and Fluid Level Check 

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

TM-263, "Changing the A/T Fluid (ATF)"

.

Fluid Condition Check

Inspect the fluid condition.

Stall Test

INFOID:0000000005274195

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

TM-268

< ON-VEHICLE MAINTENANCE >

[5AT: RE5R05A]

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:0000000005274196

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-383, "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

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

TM-269

< ON-VEHICLE MAINTENANCE >

[5AT: RE5R05A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

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-383, "Line Pressure"

At stall speed