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Pin assignment on steering column electronics control unitJ527 > < Removing and installing steering column switch module

A4 Mk3

Removing and installing steering column electronics control unitJ527
Removing and installing steering column electronics control unit -J527-
Airbag coil connector and return ring with slip ring -J527- and steering angle sender -F138- are integrated in steering column electronics control unit -G85-.
–  When renewing control unit select „Replacement“ function for appropriate control unit in „Guided Fault Finding“ or „Guided Functions“ → Vehicle diagnostic tester.
Removing
  Note
Return ring with slip ring must be removed/installed in centre position (wheels in straight ahead position).
–  Move steering wheel down and to rear as far as possible, making use of full range of steering column adjuster.
–  Remove driver's airbag → Rep. gr.69.
–  Remove steering wheel → Rep. gr.48.
–  Remove steering column trim → Rep. gr.68.
   
–  Remove bolt -1-.
–  Carefully release retaining hooks -arrows- and pull airbag coil connector and return ring with slip ring -F138--item 2- off steering column switch module -3-.
  A94-10491
–  Release electrical connectors at airbag coil connector and return ring with slip ring -F138--item 3-; to do so, position screwdriver at retaining hooks -2- and -4-, as shown, and carefully release connectors -1- and -5- in direction of -arrows A-.
–  Detach airbag coil connector and return ring with slip ring -F138- at steering column switch module.
Installing
Installation is carried out in the reverse order; note the following:
–  Make sure all fasteners and the electrical connectors are properly engaged.
–  Install steering column trim → Rep. gr.68.
–  Install steering wheel → Rep. gr.48.
–  Install driver's airbag → Rep. gr.69.
–  Perform calibration of steering angle sender in „Guided Fault Finding“ or „Guided Functions“ mode after renewing return ring with slip ring → Vehicle diagnostic tester.
  A94-10708

Pin assignment on steering column electronics control unitJ527 > < Removing and installing steering column switch module