Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.

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

Position an oil pan under the A/T inlet and outlet cooler hoses.
Clean the exterior and tip of the cooler inlet hose.
Insert the extension adapter hose of a can of Transmission Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler outlet 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.
- Never breath vapors or spray mist.
Hold the hose and can as high as possible and spray Transmission Cooler Cleaner in a continuous stream into the cooler outlet hose until ATF flows out of the cooler inlet hose for 5 seconds.

Fig 1: Spraying Transmission Cooler Cleaner Into Outlet Hose
Courtesy of NISSAN NORTH AMERICA, INC.
Tie a common white, basket-type coffee filter to the end of the cooler inlet hose.

Fig 2: Connecting Coffee Filter To Radiator/Automatic Transmission Fluid Cooler Inlet Hose
Courtesy of NISSAN NORTH AMERICA, INC.
Insert the tip of an air gun into the end of the cooler outlet hose.
Wrap a shop rag around the air gun tip and end of cooler outlet hose.
Blow compressed air regulated to 5 to 9 kg/cm² (71 to 128 psi) through the cooler outlet hose to force any remaining ATF into the coffee filter.
Remove the coffee filter from the end of the cooler inlet hose.
Perform "INSPECTION PROCEDURE ".

Fig 3: Blowing Compressed Air In To Radiator/Automatic Transmission Fluid Cooler Outlet Hose
Courtesy of NISSAN NORTH AMERICA, INC.