audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Wiring and component check with test box V.A.G 1598/22 > < Removing and installing throttle valve control part

A4 Mk1

Motronic injection and ignition system (6-cylinder)
Servicing Motronic injection system
Vacuum connections
 
A24-0144

Upper part of illustration: rear of engine

Lower part of illustration: engine seen from above

  • Hose to combination valve for
    secondary air system
  • T-piece
  • To Y-piece
    • ◆ Item 15
  • Hose to combination valve for
    secondary air system
  • Secondary air inlet valve
    -N112
  • To T-piece on variable intake manifold
    • ◆ Item 17
 
A24-0144
  • Non-return valve
  • Combination valve for secondary air system
    • ◆ Combination valve 1 for Bank 1
    • ◆ Combination valve 2 for Bank 2
  • To T-piece on variable intake manifold
    • ◆ Item 17
  • Fuel pressure regulator
  • Hose to vacuum reservoir in left-hand wheel housing
  • Intake manifold change-over valve -N156
  • Vacuum booster
  • To vacuum unit for intake manifold changeover function
 
A24-0144
  • Y piece
  • Hose to secondary air inlet valve
    -N112
    • ◆ Item 5
  • T-piece on variable intake manifold
  • Hose to connection for variable intake manifold
  • Hose to activated charcoal filter

Wiring and component check with test box V.A.G 1598/22 > < Removing and installing throttle valve control part