Digifant injection and ignition system (4-valve)

Chapter overview

• Self diagnosis
  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 and erasing fault memory
  4
• 1.6 Fault table Digifant 3.0
  5
• 1.7 Fault table Digifant 3.2
  7
• 1.8 Final control diagnosis
  10
• 1.9 Read measured value block and basic settings
  13
• 1.10 Display group overview Digifant 3.0
  13
• 1.11 Display group overview Digifant 3.2
  15
• Mixture preparation, Injection
  17
• 1 Digifant injection and ignition system
  17
• 1.1 Digifant injection and ignition system
  17
• 1.2 Fitting locations overview
  17
• 1.3 Servicing injection part
  20
• 1.4 Dismantling and assembling intake manifold upper part
  27
• 1.5 Dismantling and assembling intake manifold lower part
  30
• 1.6 Dismantling and assembling air cleaner
  32
• 1.7 Safety precautions
  34
• 1.8 Rules for cleanliness
  34
• 1.9 Technical data
  35
• 1.10 Performing basic setting
  35
• 1.11 Checking Lambda probe and Lambda control
  37
• 1.12 Checking Lambda probe heating
  40
• 1.13 Checking idling stabilization
  42
• 1.14 Checking acceleration/full throttle enrichment and overrun cut-off
  43
• 1.15 Checking engine operating mode
  44
• 1.16 Checking throttle valve potentiometer
  45
• 1.17 Checking coolant temperature sender
  48
• 1.18 Checking intake air temperature sender
  50
• 1.19 Checking engine speed sender
  53
• 1.20 Checking idling switch
  55
• 1.21 Replacing and adjusting idling switch
  58
• 1.22 Checking control unit voltage supply
  59
• 1.23 Matching engine electronic control unit to electronic immobilizer
  60
• 1.24 Checking starter signal
  61
• 1.25 Checking injectors
  62
• 1.26 Checking fuel pressure regulator and holding pressure
  64
• 1.27 Checking intake air system for leaks (unmetered air)
  66
• 1.28 Checking intake air preheating
  67
• Ignition system
  69
• 1 Digifant injection and ignition system
  69
• 1.1 Digifant injection and ignition system
  69
• 1.2 Servicing ignition part
  69
• 1.3 Dismantling and assembling distributor
  73
• 1.4 Safety precautions
  74
• 1.5 Test data, spark plugs
  75
• 1.6 Checking ignition timing control
  75
• 1.7 Checking No. 1 Cyl. recognition sender/Hall sender
  76
• 1.8 Checking ignition transformer
  77
• 1.9 Checking ignition transformer output stage
  77
• 1.10 Checking knock sensors
  80
• 1.11 Renewing rotor arm
  81