Infiniti QX56 (JA60). Manual - part 963

 

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Infiniti QX56 (JA60). Manual - part 963

 

 

TM-154

< ON-VEHICLE MAINTENANCE >

A/T FLUID COOLER

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 490 - 883 kPa (5 - 9 kg/cm

2

,

71 - 128 psi) through the cooler outlet hose to force any remain-

ing 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-152, "A/T Fluid

Cooler Cleaning"

.

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-15, "Removal and Installation"

.

A/T FLUID COOLER FINAL INSPECTION

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

Inspection

INFOID:0000000005148725

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

SCIA3834E

SCIA2967E

SCIA5659E

STALL TEST

TM-155

< ON-VEHICLE MAINTENANCE >

C

E

F

G

H

I

J

K

L

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A

B

TM

N

O

P

STALL TEST

Inspection and Judgment

INFOID:0000000005148726

A/T FLUID CHECK

Fluid Leakage and Fluid Level Check 

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

TM-148, "Checking the A/T Fluid (ATF)"

.

Fluid Condition Check

Inspect the 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/

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

SCIA1224E

TM-156

< ON-VEHICLE MAINTENANCE >

STALL TEST

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.

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

Stall speed:

2,550 - 2,850 rpm

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

LINE PRESSURE TEST

TM-157

< ON-VEHICLE MAINTENANCE >

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LINE PRESSURE TEST

Inspection and Judgment

INFOID:0000000005148727

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 (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 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 the parking brake so that the tires do not turn.

SCIA2187E

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