Audi Workshop Service and Repair Manuals

• ‒ Start final control diagnosis and activate glow period warning lamp .

• The warning lamp must blink.

Warning lamp does not blink:

• ‒ Connect test box V.A.G 1598/22 to wiring harness for engine control unit .
• ‒ Connect together sockets 1 and 41 on the test box using an auxiliary cable from V.A.G 1594.
• ‒ Switch the ignition on.

• Specified value: The warning lamp should light up.

If the warning lamp does not light up:

• ‒ Rectify any open/short circuit as necessary.

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations

If the warning lamp lights up now but did not light up during the final control diagnosis:

• ‒ Renew diesel direct-injection system control unit.