Motronic injection and ignition system (5-cyl.)

Chapter overview

• Self-diagnosis
  1
• 1 Self-diagnosis
  1
• 1.1 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 control unit
  2
• 1.5 Interrogating and erasing fault memory
  4
• 1.6 Fault table
  6
• 2 Measured value blocks
  16
• 2.1 Measured value blocks
  16
• 2.2 Safety precautions
  16
• 2.3 Read measured value block
  17
• 2.4 Display group overview
  18
• 3 Final control diagnosis
  29
• 3.1 Final control diagnosis
  29
• Mixture preparation, Injection
  37
• 1 Servicing injection system
  37
• 1.1 Servicing injection system
  37
• 1.2 Fitting locations overview
  37
• 1.3 Servicing injection system
  40
• 1.6 Dismantling and assembling fuel rail
  56
• 1.7 Dismantling and assembling air cleaner
  58
• 1.8 Safety precautions
  60
• 1.9 Rules for cleanliness
  60
• 1.10 Technical data
  60
• 2 Check components and functions
  61
• 2.1 Check components and functions
  61
• 2.2 Idling check
  61
• 2.3 Checking Lambda probe and Lambda control
  63
• 2.4 Checking Lambda probe heating
  66
• 2.5 Checking engine operating mode
  68
• 2.6 Checking air mass meter
  70
• 2.7 Checking throttle valve control part
  73
• 2.8 Checking coolant temperature sender
  80
• 2.9 Checking intake manifold temperature sender
  82
• 2.10 Checking engine speed sender
  85
• 2.11 Checking engine control unit voltage supply
  87
• 2.12 Checking injectors
  88
• 2.13 Removing and installing injectors
  93
• 2.14 Checking fuel pressure regulator and holding pressure
  94
• 2.15 Checking intake manifold change-over valve
  96
• 2.16 Checking intake air system for leaks (unmetered air)
  97
• 3 Replacing, coding and adapting engine control unit
  98
• 3.1 Replacing, coding and adapting engine control unit
  98
• 3.2 Replacing engine control unit
  98
• 3.3 Coding engine control unit
  100
• 3.4 Matching engine control unit to throttle valve control part
  101
• 3.5 Matching engine control unit to electronic immobilizer
  103
• 4 Checking additional signals
  104
• 4.1 Checking additional signals
  104
• 4.2 Checking air conditioner and air conditioner compressor signals
  104
• 4.3 Checking selector lever position on automatic gearbox
  106
• 4.4 Testing speed signal
  107
• 4.5 Checking engine speed signal
  109
• Ignition system
  110
• 1 Servicing ignition system
  110
• 1.1 Servicing ignition system
  110
• 1.2 General notes on ignition system
  110
• 1.3 Removing and installing parts of the ignition system
  111
• 1.4 Safety precautions
  115
• 1.5 Test data, spark plugs
  116
• 1.6 Checking Hall sender
  116
• 1.7 Checking knock sensors
  118
• 1.8 Checking ignition coils with output stage
  120