Class ification:

Refere nc e:

Date :

AT13-006

ITB13-025

July 19, 2013

2013 JX; CVT FLUID LEAK AT COOLER HOSE
APPLIED VEHICLE: 2013 JX (L50)

IF YOU CONFIRM:
CVT fluid is leaking from the transmission to radiator cooler hose:
•

At the connection of the hose to line fitting on the radiator.

•

Or the hose has become detached while the vehicle was driving.

NOTE: If CVT fluid is leaking from any other location, this bulletin does not apply. Refer to the Electronic
Service Manual (ESM) for further Diagnosis.

ACTION:
If CVT fluid is leaking, please refer to the flow chart on page 3 to determine the correct ACTION.

IMPORTANT: The purpose of "ACTION" (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to successfully
completing this repair.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe
that a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti dealer to determine if this
applies to your vehicle.

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PARTS INFORMATION
DESCRIPTION
HOSE - AUTO TRANSMISSION OIL COOLER
(main hose)
CLAMP-HOSE (spring clamp)

PART #

QUANTITY

21631-3JA0A

1

01558-00751

2

CLAMP-HOSE (double wire clamp)
01555-00801
RADIATOR ASSY
21460-3JA0E
CVT
(1)
(1) Reference the electronic parts catalog (FAST) for applicable part number.
* Refer to Service Procedure to confirm if required.

1
1
1*

CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
OPERATION
OP CODE
PFP
Replace Radiator

CD10AA

Replace Oil Cooler Pipe

CB16AA

21631-3JA0A

SYM DIA FRT
ZE

32

(1)

(1) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated flat rate time.
Or
Submit a Primary Part (PP) type line claim using the following claims coding:
OPERATION
OP CODE
PFP
Replace Radiator

CD10AA

Replace Oil Cooler Pipe

CB16AA

R&I Automatic CVT Transaxle Assy

JD01AA

RPL Automatic CVT Transaxle Assy

JD023A

21631-3JA0A

SYM DIA FRT

ZE

32

(1)

(1) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated flat rate time.

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ITB13-025

FLOW CHART

If CVT fluid is leaking at the radiator:
•

From the transmission cooler hose directly routed from the CVT.

Yes

Was the CVT cooler
hose detached while
driving?

Replace the:
• CVT
• Radiator
And
• Parts listed in PARTS
INFORMATION table.

No

Replace the:
• Radiator
And
• Parts listed in PARTS
INFORMATION table.
Proceed to Step 2 of SERVICE
PROCEDURE

Proceed to Step 1 of SERVICE
PROCEDURE

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ITB13-025

SERVICE PROCEDURE
Write down customer’s radio station presets (presets may be lost during this procedure).
Presets
A
B
C
SAT

1

2

3

4

5

6

1. If the “CVT to radiator” transmission cooler hose was detached from the radiator while the vehicle was
being driven:
•

Replace the CVT, and then proceed to step 2.

•

If the “CVT to radiator” transmission cooler hose was not detached while driving,
do not replace the CVT and proceed to step 2.
NOTE: Refer to:
• The appropriate section of the ESM for the procedure to remove and reinstall the CVT.
• Additional services for CVT replacement. “D: TRANSMISSION & DRIVELINE / TM-Transaxle &
Transmission / CVT: RE0F10E / BASIC INSPECTION / ADDITIONAL SERVICE WHEN
REPLACING TRANSAXLE ASSEMBLY”.

2. Replace the radiator.
NOTE: Refer to the appropriate section of the
ESM for the procedure to remove and reinstall
the radiator.
3. Re-attach the engine coolant hoses to the new
radiator, and only the “auxiliary cooler to radiator
hose” (CVT Fluid Cooler Hose C).
•

Leave this hose loose.
It will be replaced.

Leave the “transmission to radiator cooler
hose” loose at this time (CVT Fluid Cooler
Hose A/B Assembly, Figure 1).

Figure 1
4. On the CVT, slide the “transmission to radiator
cooler hose” spring clamp back onto the hose,
away from the fitting, and then remove the hose
from the fitting (Figure 2).
•

Disconnect the two hose support clips to
radiator fan shroud.

•

Discard this hose and related clamps. They
will be replaced with the parts from the
PARTS INFORMATION table.

Fitting and
hose capped

Leave old spring
clamp on hose
Figure 2
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ITB13-025

5. Slide two clamps onto the radiator side (Figure 3), and then one spring clamp onto the CVT side cooler line
fittings (Figure 4).
•

On the radiator side a double wire clamp is installed first, followed by a spring clamp.

Picture taken with radiator
out of vehicle for reference

Place one new spring
clamp on CVT outlet
Double wire clamp first
Figure 3

Figure 4

6. Clean the outer surfaces of both the radiator and the CVT fittings with an alcohol wipe from the Squeak and
Rattle Kit (or Nissan brake cleaner 999MP-A3042P).
7. Install the new hose from the PARTS INFORMATION table onto the CVT and radiator fittings and reattach
the two hose support clips to radiator fan shroud.
NOTE: Refer to “D: TRANSMISSION & DRIVELINE / TM-Transaxle & Transmission / CVT: RE0F10E /
REMOVAL AND INSTALLATION / CVT FLUID COOLER SYSTEM” for correct positioning of cooler hoses
onto fittings.
8. Position the spring clamps at the CVT and radiator cooler (Figures 5 and 6) as close to the fitting bulge as
possible, and then release them.
NOTE: Confirm that the clamps are not on top of the fitting bulge or on an angle.

Correct position

Bulge indicating fitting barb

Figure 5

Figure 6

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ITB13-025

Positioned next
to spring clamp

9. Position the double wire clamp next to the spring
clamp, and then tighten the screw all the way
down (Zero Gap).
•

Make sure the clamp is on the straight
portion of the fitting and not on the bend.
Do not position
on fitting bend
Zero gap
Figure 7

10. Check CVT fluid level and add as needed.
11. Reset the customer’s radio presets.
12. Test drive the vehicle for proper operation and recheck the CVT cooler hose connections for any leaks.

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ITB13-025