Volkswagen Workshop Service and Repair Manuals

The final control diagnosis is part of the electrical check.

The fault memory must be interrogated after the final control diagnosis.

Initiating final control diagnosis

Notes:

• ◆ If the engine is running or the vehicle moving the dash panel insert final control diagnosis cannot be initiated/will be interrupted.
• ◆ The -C- key can be used to exit the test sequence at any time.

• ‒ Connect fault reader V.A.G 1551, select operating mode 1 "Rapid data transfer", switch on ignition and enter address word 56 "Radio".

• ‒ Press keys 0 and 3 (03 selects the "final control diagnosis" function).

• ‒ Confirm entry with key Q.

The loudspeakers are tested with a test current.

If a loudspeaker circuit is recognized by the system as defective then a fault message is stored in the fault memory.

When final control diagnosis is OK:

• ‒ Press ⇒ key.

• ‒ Press ⇒ key.

• ‒ Press keys 0 and 2. (The function "Interrogate fault memory" is selected with 02.)

• ‒ Confirm entry with key Q.

• ‒ Service wiring or loudspeaker if necessary, erase fault memory and repeat final control diagnosis.
• ‒ Finally "End output" .