Isuzu I-280, I-350 2005-06

Multi-Function Switch

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Removal & Installation



  1. Disable the SIR system.
    1. Remove the steering wheel from the steering column by performing the following: Set the front wheels in the straight ahead position.
    2.  
    3. Lock the steering column through the access hole in the lower steering column trim cover using Steering Column Anti-Rotation Pin J-42640.
    4.  
    5. Remove the inflator module.
    6.  
    7. Make an alignment mark in order to note the relationship of the steering wheel to the steering shaft.
    8.  
    9. Loosen the steering wheel nut 2 complete revolutions.
    10.  
    11. Carefully unseat the steering wheel from the steering column.
    12.  
    13. Remove the steering wheel nut.
    14.  
    15. Remove the steering wheel from the steering column.
    16.  

  2.  
  3. Remove the steering column trim covers by performing the following:
    1. If tilt column, remove the tilt lever from the lower trip cover.
    2.  
    3. Remove 2 shoulder tapping screws from the lower trim cover. Remove the lower trim cover.

      Click image to see an enlarged view

      Fig. Removing lower trim cover

    4.  

  4.  
  5. Remove the 3 pan head tapping screws from the multifunction switch/SIR coil assembly.
  6.  
  7. Slide the multifunction switch/SIR coil assembly off of the steering column. Discard the multifunction switch/SIR coil assembly if replacing.

    Click image to see an enlarged view

    Fig. Slide the multifunction switch/SIR coil assembly off the steering column

  8.  

To install:


WARNING
A new multifunction switch/SIR coil assembly will come precentered with a centering tab attached. Do NOT remove the centering tab until installation is complete. Failure to follow procedure will cause a misalignment to the SIR coil and centering will be required.


NOTE
If reusing the existing multifunction switch/SIR coil assembly, you must center the SIR coil. Refer to centering the SIR coil assembly.

  1. Slide the multifunction switch/SIR coil assembly onto the steering column.
  2.  
  3. Screw the 3 pan head tapping screws into the multifunction switch/SIR coil assembly. Tighten the screws to 30 inch lbs. (3 Nm).
  4.  
  5. Route the wire harness assembly down the steering column.
  6.  
  7. Connect the multifunction switch/SIR coil assembly connector at the base of the column.
  8.  
  9. Install the wire harness straps to the wire harness assembly.
  10.  
  11. Remove the centering tab from the multifunction switch/SIR coil assembly.
  12.  
  13. Install the steering column trim covers as follows:
    1. Install the upper trim cover onto the steering column. Install 1 shoulder tapping screw into the upper trim cover. Tighten the screw to 13 inch lbs. (1.5 Nm).
      NOTE
      If column shift, the shift lever seal must be seated in the trim covers.

    2.  
    3. Slide the shift lever seal down the shift lever.
    4.  
    5. Gently snap the lower trim cover to the upper trim cover.

      Click image to see an enlarged view

      Fig. Snapping lower trim cover to the upper trim cover

    6.  
    7. Install 2 shoulder tapping screws into the lower trim cover.

      Tighten screws to 31 inch lbs. (3.5 Nm)
       
      Tighten 1 pan head tapping screw to 18 inch lbs. (2 Nm)
       

    8.  

  14.  
  15. If tilt column, install the tilt lever into the lower trim cover.
  16.  
  17. Install the steering wheel onto the steering column by performing the following:
    1. Position the steering wheel to the steering column
    2.  
    3. Align the marks made during the removal of the steering wheel.
    4.  
    5. Push the steering wheel onto the steering shaft.
    6.  
    7. Install the steering wheel nut to the steering shaft. Tighten the nut to 26 ft. lbs. (35 Nm).
    8.  
    9. Unlock the steering column by removing the Steering Column Anti-Rotation Pin J-42640 from the lower trim cover access hole.
    10.  
    11. Install the inflator module.
    12.  

  18.  
  19. Enable the SIR system.
  20.  

 
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