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Home >> Infiniti >> 2008 >> M35 Base >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> On-Vehicle Service >> Control Valve, TCM and A/T Fluid Temperature Sensor 2 >> Control Valve And TCM Removal And Installation >> Removal

Control Valve And TCM Removal And Installation: Removal

  1. Disconnect the battery cable from the negative terminal.
  2. Drain ATF through drain plug.
  3. Remove bracket (2) from transmission assembly. (for VQ35DE models)
    Fig 1: Identifying Heated Oxygen Sensor Harness And Clips
    G04875906Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Remove heated oxygen sensor 2 harness (B) from clips (1).
  5. Remove snap ring from A/T assembly harness connector.
  6. Disconnect A/T assembly harness connector.
  7. Remove snap ring from A/T assembly harness connector.
    8. Fig 2: Identifying A/T Assembly Harness Connector And Snap Ring
    G04875907Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Push A/T assembly harness connector.
    CAUTION: Be careful not to damage connector.
    Fig 3: Identifying A/T Assembly Harness Connector
    G04875908Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove oil pan, oil pan gasket and clips (VQ35DE models) or oil pan, oil pan gasket, brackets and clips (VK45DE models) according to the following procedures.
    1. VQ35DE models
      1. Remove clips (1).
      2. Remove oil pan (2) and oil pan gasket.
        Fig 4: Locating Oil Pan Gasket And Clips (VQ35DE Models)
        G05213359Courtesy of NISSAN MOTOR CO., U.S.A.
    2. VK45DE models
      1. Remove clips (1) and brackets (2).
      2. Remove oil pan (3) and oil pan gasket.
        Fig 5: Locating Oil Pan Gasket And Clips (VK45DE Models)
        G05213360Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Check foreign materials in oil pan to help determine causes of malfunction. If the ATF 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 ".
      Fig 6: Checking Foreign Materials In Oil Pan
      G04875910Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove magnets from oil pan.
    Fig 7: Identifying Magnets In Oil Pan
    G04875911Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Disconnect A/T fluid temperature sensor 2 connector.
    CAUTION: Be careful not to damage connector.
  13. Straighten terminal clips (←) to free terminal cord assembly A/T fluid temperature sensor 2 harness.
    Fig 8: Identifying A/T Fluid Temperature Sensor Connector
    G04875912Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Disconnect revolution sensor connector.
    CAUTION: Be careful not to damage connector.
    Fig 9: Identifying Revolution Sensor Connector
    G04875913Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Straighten terminal clip to free revolution sensor harness.
    Fig 10: Identifying Terminal Clip
    G04875914Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Remove bolts A, B and C from control valve with TCM.
    BOLTS SPECIFICATIONS

    Bolt symbol Length mm (in) Number of bolts
    A 42 (1.65) 5
    B 55 (2.17) 6
    C 40 (1.57) 1
    Fig 11: Identifying Bolts A, B And C In Control Valve With TCM
    G04901118Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove control valve with TCM from transmission case.
    CAUTION: When removing, be careful with the manual valve notch and manual plate height. Remove it vertically.
    Fig 12: Identifying Manual Valve And Manual Plate
    G04875916Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Remove A/T fluid temperature sensor 2 with bracket from control valve with TCM.
    Fig 13: Identifying A/T Fluid Temperature Sensor
    G04875917Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove bracket from A/T fluid temperature sensor 2.
    Fig 14: Identifying Bracket And A/T Fluid Temperature Sensor
    G04875918Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove O-ring from A/T assembly harness connector.
    Fig 15: Identifying O-Ring In A/T Assembly Harness Connector
    G04875919Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Disconnect TCM connectors.
    CAUTION: Be careful not to damage connectors.
    Fig 16: Connecting TCM Connectors
    G04875920Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Remove A/T assembly harness connector from control valve with TCM using flat-blade screwdriver.
    Fig 17: Identifying A/T Assembly Harness Connector
    G04875921Courtesy of NISSAN MOTOR CO., U.S.A.
  23. Disconnect TCM connector and park/neutral position switch connector
    CAUTION: Be careful not to damage connectors.
    Fig 18: Identifying TCM Connector And Park/Neutral Position Switch Connector
    G04875922Courtesy of NISSAN MOTOR CO., U.S.A.
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