Digifant injection and ignition system (2.5 ltr. engine)

Chapter overview

• Self diagnosis, Electrical check
  1
• 1 Self diagnosis
  1
• 1.1 Self diagnosis
  1
• 1.2 Function
  1
• 1.3 Technical data of self diagnosis
  1
• 1.4 Connecting fault reader V.A.G 1551 and selecting engine electronics control unit
  2
• 1.5 Interrogating fault memory
  4
• 1.6 Fault table
  5
• 1.7 Erasing fault memory
  7
• 1.8 Final control diagnosis
  8
• 1.9 Reading measuring value block
  10
• 1.10 Display group overview for vehicles >09.91
  11
• 1.11 Display group overview for vehicles 10.91>
  12
• 1.12 Read individual measuring value
  13
• 1.13 Checking voltage supply for fault reader V.A.G 1551
  13
• 2 Electrical check
  14
• 2.1 Electrical check
  14
• 2.2 Wiring and component check with test box V.A.G 1598
  14
• 2.3 Checking on wiring loom plug
  15
• 2.4 Test table
  15
• 2.5 Checks with Digifant control unit connected
  19
• 2.6 Test table
  19
• Mixture preparation, Injection
  21
• 1 Digifant injection and ignition system
  21
• 1.1 Digifant injection and ignition system
  21
• 1.2 Fitting locations overview
  21
• 1.3 Servicing injection part
  25
• 1.4 Safety precautions
  41
• 1.5 Rules for cleanliness
  42
• 1.6 Technical data
  42
• 1.7 Idling check
  42
• 1.8 Checking idling stabilization
  46
• 1.9 Checking Lambda probe and Lambda control
  48
• 1.10 Checking and adjusting throttle closing damper
  50
• 1.11 Checking acceleration/full throttle enrichment and overrun cut-off
  50
• 1.12 Checking throttle valve potentiometer
  51
• 1.13 Checking coolant temperature sender
  53
• 1.14 Checking intake air temperature sender
  53
• 1.15 Checking CO potentiometer
  55
• 1.16 Checking intake manifold pressure sender
  56
• 1.17 Checking and adjusting idling switch
  57
• 1.18 Checking fuel pressure regulator and holding pressure
  57
• 1.19 Checking cold start valve
  59
• 1.20 Removing and installing injectors
  60
• 1.21 Checking injectors
  62
• 1.22 Checking intake air system for leaks (unmetered air)
  65
• 1.23 Checking intake air preheating
  65
• 1.24 Basic throttle valve setting
  66
• Ignition system
  68
• 1 Digifant injection and ignition system
  68
• 1.1 Digifant injection and ignition system
  68
• 1.2 Servicing ignition part
  68
• 1.3 Dismantling and assembling distributor
  75
• 1.4 Safety precautions
  76
• 1.5 Test and adjustment data, spark plugs
  77
• 1.6 Installing distributor
  77
• 1.7 Checking and adjusting ignition timing
  78
• 1.8 Checking ignition timing control
  80
• 1.9 Checking Hall sender
  81
• 1.10 Checking ignition transformer
  82
• 1.11 Checking ignition transformer output stage
  83