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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 61 (Automatic Transmission -- G37 Coupe) >> Periodic Maintenance >> A/T Fluid Cooler >> Cleaning >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE: Insufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification.
  1. Position an oil pan under the A/T 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 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 breathe vapors or spray mist.
      Fig 1: Spraying Transmission Cooler Cleaner To Cooler Outlet Hose
      G07173887Courtesy of NISSAN MOTOR CO., U.S.A.
  4. 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.
  5. Tie a common white, basket-type coffee filter to the end of the cooler inlet hose.
    Fig 2: Attaching Common White Basket-Type Coffee Filter To End Of Cooler Inlet Hose
    G07173888Courtesy of NISSAN MOTOR CO., U.S.A.
  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/cm2 (71 to 128 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 "INSPECTION PROCEDURE".
    Fig 3: Blowing Compressed Air Into Cooler Outlet Hose
    G07173889Courtesy of NISSAN MOTOR CO., U.S.A.