Motronic injection and ignition system (6-Cyl. engine)

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
  5
• 2.1 Fault memory
  5
• 2.2 Interrogating and erasing fault memory
  5
• 2.3 Fault table
  7
• 2.4 Fault code 00281 ... 00525
  7
• 2.5 Fault code 00527 ... 00553
  10
• 2.6 Fault code 00561 ... 01177
  12
• 2.7 Fault code 01242 ... 65535
  15
• 3 Final control diagnosis
  18
• 3.1 Final control diagnosis
  18
• 3.2 Performing final control diagnosis
  18
• 4 Measured value blocks
  22
• 4.1 Measured value blocks
  22
• 4.2 Safety precautions
  22
• 4.3 Read measured value block
  22
• 4.4 Evaluating measured value blocks, display groups 001 - 003
  23
• 4.5 Evaluating measured value blocks, display groups 004 - 099
  27
• Mixture preparation, Injection
  32
• 1 Servicing injection system
  32
• 1.1 Servicing injection system
  32
• 1.2 Fitting locations overview
  32
• 1.3 General notes on injection
  35
• 1.4 Removing and installing parts of the injection system
  37
• 1.5 Dismantling and assembling air cleaner
  40
• 1.6 Dismantling and assembling fuel rail with injectors
  43
• 1.7 Removing and installing throttle valve control part
  46
• 1.8 Safety precautions
  51
• 1.9 Rules for cleanliness
  52
• 1.10 Technical data
  52
• 2 Checking components
  52
• 2.1 Checking components
  52
• 2.2 Checking Lambda probe heating
  52
• 2.3 Checking air mass meter
  55
• 2.4 Checking throttle valve control part
  58
• 2.5 Checking throttle valve potentiometer
  65
• 2.6 Checking coolant temperature sender
  67
• 2.7 Checking intake manifold temperature sender
  70
• 2.8 Checking engine speed sender
  73
• 2.9 Checking fuel pressure regulator and holding pressure
  74
• 2.10 Checking intake air system for leaks (unmetered air)
  76
• 2.11 Matching engine electronic control unit to electronic immobilizer
  77
• 2.12 Removing and installing injectors
  78
• 2.13 Checking injectors
  79
• 2.14 Checking and adjusting throttle closing damper
  83
• 3 Checking functions
  84
• 3.1 Checking functions
  84
• 3.2 Idling check
  84
• 3.3 Checking Lambda control
  86
• 3.4 Checking engine operating mode
  89
• 3.5 Checking driving characteristics after a cold start
  91
• 4 Engine control unit
  92
• 4.1 Engine control unit
  92
• 4.2 Checking control unit voltage supply
  92
• 4.3 Procedure after voltage supply open circuit
  94
• 4.4 Replacing engine control unit
  95
• 4.5 Coding engine control unit
  95
• 4.6 Matching engine control unit to throttle valve control part
  96
• 4.7 Matching engine control unit to electronic immobilizer
  97
• 5 Checking additional signals
  99
• 5.1 Checking additional signals
  99
• 5.2 Checking speed signal
  99
• 5.3 Checking air conditioner compressor signal
  100
• 5.4 Checking driving range signal
  102
• Ignition system
  104
• 1 Servicing ignition
  104
• 1.1 Servicing ignition
  104
• 1.2 General notes on ignition system
  104
• 1.3 Removing and installing parts of the ignition system
  105
• 1.4 Safety precautions
  109
• 1.5 Test data, spark plugs
  109
• 1.6 Checking Hall sender
  109
• 1.7 Checking ignition transformer
  111
• 1.8 Checking knock sensors
  114