Infiniti FX35 / FX45. Manual - part 21

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< SERVICE INFORMATION >

A/T FLUID

When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one.

e.

Re-insert A/T fluid level gauge into A/T fluid charging pipe as far as it will go.

CAUTION:

To check A/T fluid level, insert the A/T fluid level gauge until the cap contacts the end of the A/T
fluid charging pipe, with the A/T fluid level gauge reversed from the normal attachment conditions.

f.

Remove A/T fluid level gauge and note reading. If reading is at low side of range, add ATF to the A/T fluid
charging pipe.

CAUTION:

Do not overfill.

5.

Drive vehicle for approximately 5 minutes in urban areas.

6.

Make the A/T fluid temperature approximately 65

°

C (149

°

F).

NOTE:
A/T fluid level will be greatly affected by temperature as shown in figure. Therefore, be certain to
perform operation while checking data with CONSULT-III.

a.

Connect CONSULT-III to data link connector.

b.

Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.

c.

Read out the value of “ATF TEMP 1”.

7.

Recheck A/T fluid level at A/T fluid temperatures of approximately 65

°

C (149

°

F) using “HOT” range on A/

T fluid level gauge.

CAUTION:

• When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one.
• To check A/T fluid level, insert the A/T fluid level gauge

until the cap contacts the end of the A/T fluid charging
pipe, with the A/T fluid level gauge reversed from the nor-
mal attachment conditions as shown.

8.

Check A/T fluid condition.
• If ATF is very dark or smells burned, check operation of A/T.

Flush cooling system after repair of A/T.

• If ATF contains frictional material (clutches, bands, etc.),

replace radiator and flush cooler line using cleaning solvent
and compressed air after repair of A/T. Refer to 

CO-13

 (for

VQ35DE) or 

CO-40

 (for VK45DE) and 

AT-13, "A/T Fluid

Cooler Cleaning"

.

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A/T FLUID

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9.

Install the removed A/T fluid level gauge in the A/T fluid charging
pipe.

10. Tighten level gauge bolt.

A/T Fluid Cooler Cleaning

INFOID:0000000001327130

Whenever an A/T is replaced, the A/T fluid cooler mounted in the radiator must be inspected and cleaned.
Metal debris and friction material, if present, can become trapped in the A/T fluid cooler. This debris can con-
taminate the newly serviced A/T or, in severe cases, can block or restrict the flow of ATF. In either case, mal-
function of the newly serviced A/T may result.
Debris, if present, may build up as ATF enters the cooler inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.

A/T FLUID COOLER CLEANING PROCEDURE

1.

Position an oil pan under the A/T's inlet and outlet cooler hoses.

2.

Identify the inlet and outlet A/T fluid cooler hoses.

3.

Disconnect the A/T fluid cooler inlet and outlet rubber hoses
from the steel cooler tubes or bypass valve.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.

4.

Allow any ATF that remains in the cooler hoses to drain into the
oil pan.

5.

Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.

CAUTION:

• Wear safety glasses and rubber gloves when spraying the

Transmission Cooler Cleaner.

• Spray Transmission Cooler Cleaner only with adequate

ventilation.

• Avoid contact with eyes and skin.
• Do not breath vapors or spray mist.

6.

Hold the hose and can as high as possible and spray Transmis-
sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until ATF flows out of the cooler inlet hose for 5 seconds.

Level gauge bolt:

: 5.1 N·m (0.52 kg-m, 45 in-lb)

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< SERVICE INFORMATION >

A/T FLUID

7.

Insert the tip of an air gun into the end of the cooler outlet hose.

8.

Wrap a shop rag around the air gun tip and of the cooler outlet
hose.

9.

Blow compressed air regulated to 5 to 9 kg/cm

2

 (70 to 130 psi)

through the cooler outlet hose for 10 seconds to force out any
remaining ATF.

10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connect the A/T

fluid cooler steel lines to the A/T.

12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the A/T

by spraying Transmission Cooler Cleaner in a continuous stream for 5 seconds.

14. Blow compressed air regulated to 5 to 9 kg/cm

2

 (70 to 130 psi) through each steel line from the cooler

side back toward the transmission for 10 seconds to force out any remaining ATF.

15. Ensure all debris is removed from the steel cooler lines.
16. Ensure all debris is removed from the banjo bolts and fittings.

17. Perform "A/T FLUID COOLER DIAGNOSIS PROCEDURE".

A/T FLUID COOLER DIAGNOSIS PROCEDURE

NOTE:
Insufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification.

1.

Position an oil pan under the A/T's inlet and outlet cooler hoses.

2.

Clean the exterior and tip of the cooler inlet hose.

3.

Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.

CAUTION:

• Wear safety glasses and rubber gloves when spraying the

Transmission Cooler Cleaner.

• Spray Transmission Cooler Cleaner only with adequate

ventilation.

• Avoid contact with eyes and skin.
• Do not breath vapors or spray mist.

4.

Hold the hose and can as high as possible and spray Transmis-
sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until ATF flows out of the cooler inlet hose for 5 seconds.

5.

Tie a common white, basket-type coffee filter to the end of the
cooler inlet hose.

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6.

Insert the tip of an air gun into the end of the cooler outlet hose.

7.

Wrap a shop rag around the air gun tip and end of cooler outlet
hose.

8.

Blow compressed air regulated to 5 to 9 kg/cm

2

 (70 to 130 psi)

through the cooler outlet hose to force any remaining ATF into
the coffee filter.

9.

Remove the coffee filter from the end of the cooler inlet hose.

10. Perform "A/T FLUID COOLER INSPECTION PROCEDURE".

A/T FLUID COOLER INSPECTION PROCEDURE

1.

Inspect the coffee filter for debris.

a.

If small metal debris less than 1 mm (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 1 mm
(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-13

 and 

CO-16

 (for VQ35DE), 

CO-40

 and

CO-44

 (for VK45DE).

A/T FLUID COOLER FINAL INSPECTION

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

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