Audi Workshop Service and Repair Manuals

• ‒ Pull 2-pin connector off secondary air pump motor and connect diode test lamp V.A.G 1527 to disconnected connector using test leads from V.A.G 1594.
      The LED should flash.

If the LED flashes:

• ‒ Renew secondary air pump motor (V101):

=> 6-cylinder engine (5-valve), Mechanics; Repair group 26; Secondary air system; Removing and installing parts of secondary air system

If the LED does not flash but the secondary air pump relay clicks:

• ‒ Check fuse for secondary air pump relay -J299.

=> Current flow diagrams, Electrical fault-finding and Fitting locations

If the fuse is not faulty:

• ‒ Remove secondary air pump relay from relay carrier.

=> Current flow diagrams, Electrical fault-finding and Fitting locations

Notes:

• ◆ If tools are necessary to pull relays or control units out of the relay plate, first disconnect battery earth strap.
• ◆ Before disconnecting battery earth strap obtain code for radios with anti-theft coding.

• ‒ Test voltage supply (terminal 30) to relay using current flow diagram. If necessary, renew secondary air pump relay -J299.

If the LED does not flash and the secondary air pump relay does not click:

• ‒ Switch off ignition.

• ‒ → Connect test box V.A.G 1598/22 to wiring harness for engine control unit=>Page 24-24.
• ‒ Test for open circuit in wiring between socket 30 on test box and contact 6 on relay carrier using the current flow diagram.
      Wiring resistance: max. 1.5ω

If no fault in wire is detected:

• ‒ Renew engine control unit=>Page 24-26.