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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> On-Vehicle Service >> Control Valve Assembly >> Removal
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Control Valve Assembly: Removal

  1. Disconnect the negative battery terminal.
  2. Drain ATF through drain plug.
  3. Disconnect heated oxygen sensor 2 harness connector.
  4. Remove oil pan and oil pan gasket.
    Fig 1: Locating Oil Pan Bolts & Drain Plug
    G00750891Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Check foreign materials in oil pan to help determine causes of malfunction. If the A/T fluid is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and clutches to stick and can inhibit pump pressure.
    • If frictional material is detected, perform A/T fluid cooler cleaning. Refer to A/T Fluid Cooler Cleaning  under A/T FLUID.
  6. Remove magnets from oil pan.
    Fig 2: Locating Oil Pan Magnets
    G00750893Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Disconnect terminal cord assembly connectors.
    CAUTION: Be careful not to damage connector.
    Fig 3: Locating Terminal Cord Connectors
    G00750894Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Disconnect A/T fluid temperature sensor 2 connector.
    CAUTION: Be careful not to damage connector.
    Fig 4: Locating A/T Fluid Temperature Sensor 2 Connector
    G00750895Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove terminal cord assembly connectors from bracket.
    CAUTION: Be careful not to damage connector.
    Fig 5: Identifying Terminal Cord Connectors & Bracket
    G00750896Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Disconnect revolution sensor connector.
    CAUTION: Be careful not to damage connector.
    Fig 6: Locating Revolution Sensor Connector
    G00750897Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Straighten terminal clips to free terminal cord assembly and revolution sensor harness then remove terminal clips.
    CAUTION: Hang down terminal cord assembly and revolution sensor harness toward outside so as not to disturb removal of control valve assembly.
    Fig 7: Locating Terminal Clips
    G00750898Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove bolts A, B and C from control valve assembly.
    Fig 8: Locating Control Valve Assembly Bolts
    G00750900Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 9: Control Valve Assembly Bolt Legend
    G00750899Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove control valve assembly from transmission case.
    CAUTION: When removing, be careful with the manual valve notch and manual plate height. Remove it vertically.
    Fig 10: Locating Manual Plate & Manual Valve
    G00750901Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Remove A/T fluid temperature sensor 2 with bracket from control valve assembly.
    Fig 11: Locating A/T Fluid Temperature Sensor 2 Connector & Bracket
    G00750902Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Remove bracket from A/T fluid temperature sensor 2.
    Fig 12: Removing A/T Fluid Temperature Sensor 2 Connector Bracket
    G00750903Courtesy of NISSAN MOTOR CO., U.S.A.
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