Nissan Teana J32. Instruction — part 1155

TM-144

< ON-VEHICLE MAINTENANCE >

[CVT: RE0F09B]

STALL TEST

STALL TEST

Inspection and Judgment

INFOID:0000000003849078

INSPECTION

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
CVT fluid temperature is 50 to 80

°

C (122 to 176

°

F). Inspect the

amount of CVT fluid. Replenish if necessary.

3.

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

4.

Install a tachometer where it can be seen by driver during test.
NOTE:
It is good practice to mark the point of specified engine rpm on
indicator.

5.

Start engine, apply foot brake, and move selector lever to “D”
position.

6.

Gradually press down accelerator pedal while holding down the
foot brake.

7.

Quickly read off the stall speed, and then quickly remove your
foot from accelerator pedal.

CAUTION:

Never hold down accelerator pedal for more than 5 seconds
during this test.

8.

Move selector lever to “N” position.

9.

Cool down the CVT fluid.

CAUTION:

Run the engine at idle for at least 1 minute.

10. Repeat steps 6 through 9 with selector lever in “R” position.

JUDGMENT

SAT647B

SCIA7463E

Stall speed

: Refer to

TM-174, "Stall Speed"

.

SAT514G

Selector lever position

Expected problem location

“D”

“R”

Stall rotation

H

O

• Forward clutch

O

H

• Reverse brake

L

L

• Engine and torque converter one-way clutch

H

H

• Line pressure low
• Primary pulley
• Secondary pulley
• Steel belt

STALL TEST

TM-145

< ON-VEHICLE MAINTENANCE >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

O: Stall speed within standard value position.

H: Stall speed is higher than standard value.

L: Stall speed is lower than standard value.

TM-146

< ON-VEHICLE MAINTENANCE >

[CVT: RE0F09B]

LINE PRESSURE TEST

LINE PRESSURE TEST

Inspection and Judgment

INFOID:0000000003849079

INSPECTION

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 CVT fluid reaches in the range of 50 to 80

°

C

(122 to 176

°

F). Then inspect the amount of CVT fluid and replenish if necessary.

NOTE:
The CVT fluid temperature rises in the range of 50 to 80

°

C (122 to 176

°

F) during 10 minutes of driv-

ing.

3.

After warming up CVT, remove the oil pressure detection plug
and install the joint pipe adapter (SST: KV31103600), adapter
(SST: 25054000), oil pressure gauge set (commercial service
tool).

CAUTION:

When using the oil pressure gauge, be sure to use the O-
ring attached to the oil pressure detection plug.

4.

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

5.

Start the engine, and then measure the line pressure at both idle
and the stall speed.

CAUTION:

• Keep brake pedal pressed all the way down during mea-

surement.

• When measuring the line pressure at the stall speed.

Refer to

TM-144, "Inspection and Judgment"

.

6.

Install oil pressure detection plug and tighten to the specified
torque below after the measurements are complete.

CAUTION:

• Never reuse O-ring.
• Apply CVT fluid to O-ring.

JUDGMENT

SCIA7972E

SCIA7463E

Line pressure

: Refer to

TM-174, "Line Pressure"

.

: 7.5 N·m (0.77 kg-m, 66 in-lb)

SAT493G

LINE PRESSURE TEST

TM-147

< ON-VEHICLE MAINTENANCE >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Judgment Possible

cause

Idle speed

Low for all positions
(“P”, “R”, “N”, “D”, “L”)

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 specific
position

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

High

Possible causes include a sensor malfunction or malfunction in the line pressure adjustment
function.
For example
• Accelerator pedal position signal malfunction
• CVT fluid temperature sensor malfunction
• Pressure control solenoid A (line pressure solenoid) malfunction (sticking in OFF state, filter

clog, cut line)

• Pressure regulator valve or plug sticking

Stall speed

Line pressure does not
rise higher than the line
pressure for idle.

Possible causes include a sensor malfunction or malfunction in the pressure adjustment func-
tion.
For example
• Accelerator pedal position signal malfunction
• TCM malfunction
• Pressure control solenoid A (line pressure solenoid) malfunction (shorting, sticking in ON

state)

• Pressure regulator valve or plug sticking

The pressure rises, but
does not enter the
standard position.

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

Only low for a specific
position

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