Audi Workshop Service and Repair Manuals

Notes:

• ◆ Final control diagnosis can only be performed with vehicle stationary and engine stopped.
• ◆ The navigation system must be switched on.
• ◆ If final control diagnosis detects a fault, locate and eliminate cause of problem if necessary.
• ◆ Final control diagnosis can only be performed once. Ignition must be switched off and on again if final control diagnosis is to be repeated.

Performing final control diagnosis:

• ‒ Press keys 0 and 3 to select "Final control diagnosis" function.

• ‒ Confirm entry with Q key.

The hands-free loudspeaker receives a brief electrical pulse (inaudible). The hands-free loudspeaker is only connected directly to the navigation control unit if no radio system is fitted. This final control element test is only of practical use under those circumstances.

If a radio system (without BOSE) is fitted, the front left loudspeaker is used for voice output. On vehicles with BOSE sound system voice output is via the radio to the hands-free loudspeaker.

Note:

The "mutual wire shorting" fault category can only be detected for the hands-free loudspeaker by way of this final control element test. If this fault occurs, it is stored in the fault memory (00851).

• ‒ Press ⇒key.

A noise is emitted for about three seconds from the loudspeaker output (hands-free loudspeaker or loudspeaker at front left). The noise will be spoken phrases (if speech is loaded into the navigation system) or otherwise a crackling noise.

• ‒ Press ⇒key.

Dash panel insert displays the following test pattern:

The test pattern covers the entire display.

The display changes between normal and inverse every 4 seconds.

• ‒ Press ⇒ key.

• ‒ Press ⇒key.
• ‒ Tester returns to basic function.