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Steering Column ASSY: Overhaul

WARNING: This page is about a different car, the 2004 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. PRECAUTION (SEE  AIR BAG SAFETY PRECAUTIONS  ) 
  2. REMOVE REAR FLOOR BOARD NO.2 (SEE  REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY  ) 
  3. REMOVE DECK FLOOR BOX REAR (SEE  REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY  ) 
  4. REMOVE REAR FLOOR BOARD NO.3 (SEE  REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY  ) 
  5. DISCONNECT BATTERY NEGATIVE TERMINAL (SEE  AIR BAG SAFETY PRECAUTIONS  ) 
  6. PLACE FRONT WHEELS FACING STRAIGHT AHEAD 
  7. REMOVE STEERING WHEEL COVER LOWER NO.2 (SEE  REMOVAL & INSTALLATION  ) 
  8. REMOVE STEERING WHEEL COVER LOWER NO.3 (SEE  REMOVAL & INSTALLATION  ) 
  9. REMOVE HORN BUTTON ASSY (SEE  REMOVAL & INSTALLATION  ) 
  10. REMOVE STEERING WHEEL ASSY 
    1. Remove the nut and put matchmarks on the steering wheel assy and the steering main shaft.
    2. Using SST, remove the steering wheel assy.

      SST 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05021)

    Fig 1: Identifying Matchmarks On Steering Wheel Assy
    G00933892Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. REMOVE TILT LEVER BRACKET 
    1. Remove the 2 screws and the tilt lever bracket.
    Fig 2: Removing Screws And Tilt Lever Bracket
    G00933893Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE STEERING COLUMN COVER 
    1. Disengage the 4 claws, remove the 3 screws, and then remove the steering column cover LWR and the steering column cover UPR.
    Fig 3: Removing Column Cover
    G00933894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE TURN SIGNAL SWITCH ASSY W/SPIRAL CABLE SUB-ASSY 
    1. Remove the clamp and remove the turn signal switch assy w/ spiral cable sub-assy from the steering column assy.
  14. REMOVE FRONT DOOR SCUFF PLATE LH (SEE  OVERHAUL  ) 
  15. REMOVE FRONT DOOR SCUFF PLATE RH (SEE  OVERHAUL  ) 
  16. REMOVE COWL SIDE TRIM BOARD LH (SEE  OVERHAUL  ) 
  17. REMOVE COWL SIDE TRIM BOARD RH (SEE  OVERHAUL  ) 
  18. REMOVE INSTRUMENT PANEL REGISTER ASSY NO.1 (SEE  REPLACEMENT  ) 
  19. REMOVE INSTRUMENT PANEL FINISH PANEL SUB-ASSY LOWER (SEE  REPLACEMENT  ) 
  20. REMOVE INSTRUMENT PANEL FINISH PANEL SUB-ASSY UPPER (SEE  REPLACEMENT  ) 
  21. REMOVE INSTRUMENT PANEL REGISTER ASSY NO.3 (SEE  REPLACEMENT  ) 
  22. REMOVE INSTRUMENT PANEL REGISTER ASSY NO.4 (SEE  REPLACEMENT  ) 
  23. REMOVE INSTRUMENT PANEL REGISTER ASSY NO.2 (SEE  REPLACEMENT  ) 
  24. REMOVE MULTI-DISPLAY ASSY (SEE  REPLACEMENT  ) 
  25. REMOVE GLOVE COMPARTMENT DOOR STOPPER SUB-ASSY (SEE  REPLACEMENT  ) 
  26. REMOVE GLOVE COMPARTMENT DOOR ASSY (SEE  REPLACEMENT  ) 
  27. REMOVE GLOVE COMPARTMENT DOOR (SEE  REPLACEMENT  ) 
  28. REMOVE INSTRUMENT PANEL SPEAKER PANEL SUB-ASSY NO.1 W/CTR SPEAKER (SEE  REPLACEMENT  ) 
  29. REMOVE FRONT PILLAR GARNISH CORNER PIECE LH (SEE  REPLACEMENT  ) 
  30. REMOVE FRONT PILLAR GARNISH CORNER PIECE RH (SEE  REPLACEMENT  ) 
  31. REMOVE FRONT PILLAR GARNISH LH (SEE  REPLACEMENT  ) 
  32. REMOVE FRONT PILLAR GARNISH RH (SEE  REPLACEMENT  ) 
  33. DISCONNECT PASSENGER AIRBAG CONNECTOR (SEE  REPLACEMENT  ) 
  34. REMOVE INSTRUMENT PANEL SUB-ASSY W/PASSENGER AIRBAG ASSY (SEE  REPLACEMENT  ) 
  35. DISCONNECT POWER STEERING ECU ASSY 
    1. Separate the torque sensor wire harness clamp from the bottom surface of the power steering ECU assy.
    2. Separate the torque sensor wire harness clamp from the instrument panel reinforcement.
    3. Disconnect the 2 steering column assy connectors from the power steering ECU assy.
    Fig 4: Disconnecting Power Steering ECU Assy
    G00933895Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  36. REMOVE FRONT FLOOR FOOTREST 
    1. Using a Flathead screwdriver, pull the front floor footrest forward, disengage the 2 clips, and remove the front floor footrest.
  37. REMOVE COLUMN HOLE COVER SILENCER SHEET 
    1. Turn back the floor carpet and remove the 2 clips and the column hole cover silencer sheet.
    Fig 5: Removing Column Hole Cover Silencer Sheet
    G00933896Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  38. REMOVE STEERING INTERMEDIATE SHAFT ASSY NO.2 
    1. Loosen bolt A on the steering sliding yoke sub-assy.
    2. Put matchmarks on the steering intermediate shaft assy and the steering intermediate shaft.
    3. Remove bolt B and separate the steering intermediate shaft assy from the steering intermediate shaft.
    4. Put matchmarks on the steering intermediate shaft assy and the steering column assy.
    5. Remove bolt C and separate the steering intermediate shaft assy from the steering column assy.
    Fig 6: Removing Steering Intermediate Shaft Assy No.2
    G00933897Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  39. REMOVE STEERING SLIDING YOKE SUB-ASSY 
    1. Remove the bolt and remove the steering sliding yoke sub-assy from the steering intermediate shaft assy.
    Fig 7: Removing Bolt And Removing Steering Sliding Yoke Sub-Assy From Steering Intermediate Shaft Assy
    G00933898Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  40. REMOVE STEERING COLUMN ASSY 
    1. Disconnect the connectors and the wire harness clamps from the steering column assy.
    2. Remove the 3 bolts and the steering column assy.
    Fig 8: Disconnecting Connectors
    G00933899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  41. INSPECT STEERING COLUMN ASSY 
    1. Using SST and a torque wrench, measure the main shaft turning torque.

      SST 09616-00011

      1. Standard turning torque: 0.4 to 1.1 N.m (4 to 11 kgf.cm) (2 sec./turn) 
      Fig 9: Inspecting Steering Column Assy
      G00933900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. If turning torque is out of specification, remove the motor and remeasure.
      1. Reference turning torque: 0.1 to 0.6 N.m (1 to 6 kgf.cm) (2 sec./turn) (motorless) 

      If turning torque is within specification, replace the motor with a new one.

      If turning torque is out of specification, replace the steering column assy with a new one.

  42. REMOVE POWER STEERING MOTOR ASSY 
    1. Remove the 2 clamps from the power steering motor and the torque sensor wire harnesses.
      Fig 10: Removing Power Steering Motor Assy
      G00933901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Do not damage the clamps.
    2. Remove the 2 bolts and the power steering motor assy.
  43. INSTALL POWER STEERING MOTOR ASSY 
    1. Secure the steering column assy in a vise so that the motor installation part is horizontal.
    2. Apply MP grease to the serrated part of the motor and install it to the steering column.
      1. Reference amount: 0.3 g 
    3. Using SST, turn the steering main shaft 2 or 3 turns at a rate of one turn per second to seat the motor, and temporarily tighten the 2 bolts.
      Fig 11: Applying MP Grease To Serrated Part Of The Motor
      G00933902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Make sure that the motor is installed vertically and sits under its own weight.
      • Temporarily tighten the bolts with the motor properly seated.
    4. Fully tighten the 2 bolts.
      1. Torque: 18 N.m (185 kgf.cm, 13 ft.lbf) 
      NOTE: Do not apply force to the motor in the horizontal direction when tightening the bolts.
    5. Hold the wire harness for the power steering motor and the torque sensor wire harness with the 2 clamps and vinyl tape as shown in the illustration.
    Fig 12: Holding Wire Harness For Power Steering Motor
    G00933903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  44. INSTALL STEERING COLUMN ASSY 
    1. Install the steering column assy with the 3 bolts.
      1. Torque: 25 N.m (255 kgf.cm, 18 ft.lbf) 
    2. Connect the connectors and the wire harness clamps to the steering column assy.
    Fig 13: Installing Steering Column Assy With Bolts
    G00933904Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  45. INSTALL STEERING SLIDING YOKE SUB-ASSY 
    1. Temporarily install the steering sliding yoke sub-assy to the steering intermediate shaft assy with the bolt.
    Fig 14: Locating Bolt
    G00933905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  46. INSTALL STEERING INTERMEDIATE SHAFT ASSY NO.2 
    1. Align the matchmarks on the steering intermediate shaft assy and the steering column assy and install them with bolt C.
      1. Torque: 35 N.m (360 kgf.cm, 26 ft.lbf) 
      Fig 15: Installing Steering Intermediate Shaft Assy No.2
      G00933906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Align the matchmarks on the steering intermediate shaft assy and the steering intermediate shaft and install them with bolt B.
      1. Torque: 35 N.m (360 kgf.cm, 26 ft.lbf) 
    3. Tighten bolt A on the steering sliding yoke sub-assy.
      1. Torque: 35 N.m (360 kgf.cm, 26 ft.lbf) 
  47. INSTALL COLUMN HOLE COVER SILENCER SHEET 
  48. INSTALL FRONT FLOOR FOOTREST 
    1. Engage the 2 clips to install the front floor footrest.
  49. CONNECT POWER STEERING ECU ASSY 
    1. Connect the 2 steering column assy connectors to the power steering ECU assy.
    2. Install the clamp holding the power steering motor and the torque sensor wire harnesses on the bottom surface of the power steering ECU assy.
    3. Install the torque sensor wire harness clamp to the instrument panel reinforcement.
    4. Make sure that the power steering motor and the torque sensor wire harnesses do not interfere with other parts while by tilting up and down the steering column assy.
    Fig 16: Connecting Power Steering ECU Assy
    G00933907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  50. INSTALL INSTRUMENT PANEL SUB-ASSY W/PASSENGER AIRBAG ASSY (SEE  REPLACEMENT  ) 
  51. INSTALL TURN SIGNAL SWITCH ASSY W/SPIRAL CABLE SUB-ASSY 
    1. Install the turn signal switch assy w/ spiral cable sub-assy to the steering column assy with the clamp.
  52. ADJUST SPIRAL CABLE SUB-ASSY (SEE  CENTERING SPIRAL CABLE  ) 
  53. INSTALL STEERING COLUMN COVER 
    1. Engage the 4 claws to install the steering column cover UPR and the steering column cover LWR.

      HINT:

      Fully tilt down the steering column assy when installing the steering column cover UPR and fully tilt it up when installing the steering column cover LWR.

  54. INSTALL TILT LEVER BRACKET 
    1. Install the tilt lever bracket with the 2 screws.
      1. Torque: 2.0 N.m (20 kgf.cm, 18 in..lbf) 
  55. INSPECT STEERING WHEEL CENTER POINT 

    HINT:

    When the steering wheel is not properly centered, remove and refit to center.

  56. INSTALL STEERING WHEEL ASSY 
    1. Align the matchmarks on the steering wheel assy and the steering main shaft assy.
    2. Install the steering wheel assy with the set nut.
      1. Torque: 50 N.m (510 kgf.cm, 37 ft.lbf) 
  57. INSPECT HORN BUTTON ASSY (SEE  REMOVAL & INSTALLATION  ) 
  58. INSTALL HORN BUTTON ASSY (SEE  REMOVAL & INSTALLATION  ) 
  59. CONNECT BATTERY NEGATIVE TERMINAL (SEE  BATTERY  ) 
  60. INSTALL REAR FLOOR BOARD NO.3 
  61. INSTALL DECK FLOOR BOX REAR 
  62. INSTALL REAR FLOOR BOARD NO.2 
  63. INSPECT SRS WARNING LIGHT (SEE  DIAGNOSTIC TESTS  ) 
  64. PERFORM CALIBRATION OF TORQUE SENSOR ZERO POINT (SEE  CALIBRATION  ) 
  65. PERFORM INITIALIZATION (SEE  INITIALIZATION  ) 

    HINT:

    When disconnecting the negative battery terminal, it is necessary to initialize other systems.

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