A/T Fluid Cooler Diagnosis Procedure

WARNING: This page is about a different car, the 2005 Nissan Quest. 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 automatic transaxle's 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 cooler cleaner only with adequate ventilation.
- Avoid contact with eyes and skin.
- Do not 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 fluid flows out of the cooler inlet hose for 5 seconds.

Fig 1: Inserting Extension Adapter Hose Of A Can Of Transmission Cooler Cleaner Into Cooler Outlet Hose
Courtesy of NISSAN MOTOR CO., U.S.A.
Tie a common white, basket-type coffee filter to the end of the cooler inlet hose.

Fig 2: Tying A Common White, Basket-Type Coffee Filter To End Of Cooler Inlet Hose
Courtesy of NISSAN MOTOR CO., U.S.A.
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 - 9 kg/cm² (70 - 130 psi) through the cooler outlet hose to force any remaining A/T fluid into the coffee filter.

Fig 3: Applying Air Pressure Into Cooler Out Let Hose
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove the coffee filter from the end of the cooler inlet hose.
Perform "A/T FLUID COOLER INSPECTION PROCEDURE ".