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ATF Warmer Replacement

NOTE: Replace the ATF warmer with a new one whenever the transmission assembly is replaced.
  1. Drain the engine coolant (see COOLANT CHECK ).
  2. Remove the left side engine compartment cover.
  3. Remove the air intake duct and air cleaner housing.
  4. Remove the harness clamps (A) and harness cover (B) from the harness clamp bracket (C), and remove the bolt securing the bracket.
    Fig 1: Identifying Harness Clamps (A), Harness Cover (B), Clamp Bracket (C), Water Hoses (D) And ATF Warmer (E)
    G03660663Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Disconnect the water hoses (D) from the ATF warmer (E).
  6. Put a shop rugs around the ATF warmer (A) to catch the ATF that flows out.
    Fig 2: Identifying ATF Warmer (A), Bracket (B) And O-Rings (C)
    G03660664Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Remove the bolts securing the ATF warmer and the bracket (B), then remove the ATF warmer from the transmission.
  8. Clean the mounting surfaces and fluid passages. Do not allow dust or other foreign particles to enter the transmission.
  9. Install the new ATF warmer with the new O-rings (C) and the bracket. Do not pinch the O-rings.
  10. Connect the water hoses on the ATF warmer, and secure the hoses with the clips.
  11. Install the harness clamp bracket bolt, and install the harness clamps and harness cover on the bracket.
  12. Install the air intake duct and air cleaner housing.
  13. Install the left side engine compartment cover.
  14. Fill the radiator with the engine coolant, then bleed air from the cooling system (see step 8 on COOLANT CHECK ).
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