Volkswagen Workshop Service and Repair Manuals

• 10 Nm
• 25 Nm
• Union nuts
• ◆ To combi valve, 25 Nm
• ◆ To union item 6 ,
  35 Nm
• 25 Nm
• ◆ Renew
• Pipe
• ◆ For secondary air injection
• Union, 35 Nm
• 4-pin connector
• ◆ Black
• ◆ Contacts 3 and 4 gold plated
• ◆ For Lambda probe and Lambda probe heating

• Lambda probe 1 in front of catalyst (G39), 50 Nm
• ◆ Grease only the threads with "G 052 112 A3"; "G 052 112 A3" must not get into the slots on the probe body
• ◆ Remove and install with 3337
• ◆ Checking:
• ◆ Engine codes AFT, AKS:

=> Repair group 24; Simos injection and ignition system; Checking Lambda probe and Lambda control

• ◆ Engine code AEK:

=> Repair group 24; Motronic injection and ignition system; Checking Lambda probe and Lambda control

• ◆ Engine codes ATU, AWF, AWG

=> Repair group 24; Checking functions; Checking Lambda probe and Lambda control in front of catalyst

• 4-pin connector
• ◆ Brown
• ◆ Contacts 3 and 4 gold-plated
• ◆ For Lambda probe and Lambda probe heating

• Lambda probe 2 after catalyst (G130), 50 Nm
• ◆ Engine codes ATU, AWF, AWG
• ◆ Grease only the threads with "G 052 112 A3"; "G 052 112 A3" must not get into the slots on the probe body
• ◆ Remove and install with 3337
• ◆ Checking:

=> Repair group 24; Checking functions; Checking Lambda probe and Lambda regulation behind catalyst

• To centre silencer
• Catalyst
• 25 Nm
• Gasket
• ◆ Renew
• Front exhaust pipe
• 40 Nm
• ◆ Tightening sequence => Fig. 1

• Gasket
• ◆ Renew
• Exhaust manifold
• Warm air collector plate

→ Fig. 1     Tightening sequence exhaust pipe to exhaust manifold