4AV injection and ignition system

Chapter overview

• Self-diagnosis
  1
• 1 General to self-diagnosis
  1
• 1.1 General to self-diagnosis
  1
• 1.2 Features of self-diagnosis
  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
• 2 Fault memory
  7
• 2.1 Fault memory
  7
• 2.2 Interrogating and erasing fault memory
  7
• 3 Fault table, fault codes 00263...00524
  9
• 3.1 Fault table, fault codes 00263...00524
  9
• 4 Fault table, fault codes 00525...17978
  13
• 4.1 Fault table, fault codes 00525...17978
  13
• 5 Final control diagnosis
  19
• 5.1 Final control diagnosis
  19
• 5.2 Performing final control diagnosis
  19
• 6 Measured value blocks
  24
• 6.1 Measured value blocks
  24
• 6.2 Safety precautions
  24
• 6.3 Read measured value block
  24
• 6.4 Evaluating measured value blocks
  25
• Mixture preparation, Injection
  34
• 1 Servicing injection system
  34
• 1.1 Servicing injection system
  34
• 1.2 Fitting locations overview
  34
• 1.3 General notes on injection
  36
• 1.4 Removing and installing parts of the injection system
  38
• 1.5 Dismantling and assembling intake manifold
  47
• 1.6 Dismantling and assembling fuel rail with injectors
  49
• 1.7 Dismantling and assembling air cleaner
  52
• 1.8 Safety precautions
  55
• 1.9 Rules for cleanliness
  56
• 1.10 Technical data
  57
• 2 Checking components
  57
• 2.1 Checking components
  57
• 2.2 Checking Lambda probe heating
  57
• 2.3 Checking throttle valve control part
  59
• 2.4 Checking intake manifold pressure sender
  67
• 2.5 Checking intake air temperature sender
  70
• 2.6 Checking coolant temperature sender
  73
• 2.7 Checking engine speed sender
  75
• 2.8 Checking injectors
  77
• 2.9 Checking fuel pressure regulator and holding pressure
  84
• 2.10 Checking intake air system for leaks (unmetered air)
  87
• 2.11 Checking intake air preheating
  88
• 2.12 Wire routing engine wiring loom
  89
• 3 Checking functions
  91
• 3.1 Checking functions
  91
• 3.2 Checking Lambda probe and Lambda control
  91
• 3.3 Checking engine operating mode
  94
• 4 Engine control unit
  95
• 4.1 Engine control unit
  95
• 4.2 Checking control unit voltage supply
  95
• 4.3 Replacing engine control unit
  97
• 4.4 Matching engine control unit to throttle valve control part
  98
• 4.5 Matching engine control unit to electronic immobilizer
  100
• 5 Checking additional signals
  101
• 5.1 Checking additional signals
  101
• 5.2 Checking speed signal
  101
• 5.3 Checking signal from/to air conditioning system
  102
• 5.4 Checking driving range signal
  104
• 5.5 Checking rpm signal
  105
• 5.6 Checking gearbox intervention signal when a gear is shifted
  106
• Ignition system
  109
• 1 Servicing ignition system
  109
• 1.1 Servicing ignition system
  109
• 1.2 General notes on ignition system
  109
• 1.3 Removing and installing parts of the ignition system
  110
• 1.4 Safety precautions
  112
• 1.5 Test data, spark plugs
  113
• 1.6 Checking Hall sender
  114
• 1.7 Checking ignition transformer
  115
• 1.8 Checking knock sensor
  119