audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Removing and installing control unit 1 for information electronicsJ794 > < Removing and installing control unit for front display and information control panelJ523 (MMI basic)

A4 Mk3

Removing and installing control unit for front display and information control panelJ523 (up to week 44/08)
Removing and installing control unit for front display and information control panel -J523- (up to week 44/08)
The control unit for front display and information control panel -J523- is located behind dash panel.
Special tools and workshop equipment required
   
t  Protective cap for cable connector -VAS 6223/9-
–  Switch off all electrical equipment.
–  Remove ignition key.
–  When renewing control unit, select „Replacement“ function for appropriate control unit in „Guided Fault Finding“.
To do so, use → Vehicle diagnostic tester.
Removing
–  Remove air conditioner operating unit → Air conditioning system; Rep. gr.87.
–  Remove CD changer -R41- from dash panel → Chapter.
  W00-10202
–  Remove bolts -arrows- and pull control unit for front display and information control panel -J523--1- out of mounting frame in direction of -arrow-.
  A91-10938
–  Release and unplug connector to MOST bus -3-.
  A91-10937
–  Fit protective cap for cable connector -VAS 6223/9--1- onto MOST bus connector -2-.
  A97-0760
–  Unscrew earth connection -2-.
–  Release and unplug connectors -1- and -4- on control unit for front display and information control panel -J523--5-.
–  Turn around control unit for front display and information control panel -J523- together with bracket -5-.
  A91-10937
–  Remove bolts -3- and detach control unit for front display and information control panel -J523--2- from bracket -1-.
Installing
–  Install in reverse sequence of removal.
Tightening torques → Chapter
  A91-11021

Removing and installing control unit 1 for information electronicsJ794 > < Removing and installing control unit for front display and information control panelJ523 (MMI basic)