Motronic injection and ignition system (4-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 Significance of exhaust emissions warning lamp
  3
• 1.5 Connecting fault reader V.A.G 1551 and selecting engine control unit
  4
• 2 Fault memory
  8
• 2.1 Fault memory
  8
• 2.2 Interrogating and erasing fault memory
  8
• 2.3 Automatic test sequence
  9
• 3 Fault table: SAE P0 codes
  10
• 3.1 Fault table: SAE P0 codes
  10
• 4 Fault table: SAE P1 codes
  14
• 4.1 Fault table: SAE P1 codes
  14
• 5 Final control diagnosis
  17
• 5.1 Final control diagnosis
  17
• 5.2 Performing final control diagnosis
  17
• 6 Readiness code
  23
• 6.1 Readiness code
  23
• 6.2 Reading readiness code
  23
• 6.3 Generating readiness code
  24
• 7 Measured value blocks
  30
• 7.1 Measured value blocks
  30
• 7.2 Safety precautions
  30
• 7.3 Read measured value block
  30
• 8 Evaluating measured value blocks, display groups 0...9 -Basic functions-
  31
• 8.1 Evaluating measured value blocks, display groups 0...9 -Basic functions-
  31
• 9 Evaluating measured value blocks, display groups 10...29, 212 -Ignition-
  35
• 9.1 Evaluating measured value blocks, display groups 10...29, 212 -Ignition-
  35
• 10 Evaluating measured value blocks, display grps 30...49, 99 -Lambda regulation-
  38
• 10.1 Evaluating measured value blocks, display grps 30...49, 99 -Lambda regulation-
  38
• 11 Evaluating measured value blocks, display groups 50...69 -Speed regulation-
  43
• 11.1 Evaluating measured value blocks, display groups 50...69 -Speed regulation-
  43
• 12 Evaluating measured value blocks, display groups 70...79 -Reducing emissions-
  45
• 12.1 Evaluating measured value blocks, display groups 70...79 -Reducing emissions-
  45
• 13 Evaluating measured value blocks, display groups 80...100 -Readiness code-
  46
• 13.1 Evaluating measured value blocks, display groups 80...100 -Readiness code-
  46
• Mixture preparation, Injection
  48
• 1 Servicing injection system
  48
• 1.1 Servicing injection system
  48
• 1.2 Fitting locations overview
  48
• 1.3 General notes on injection
  52
• 1.4 Removing and installing parts of the injection system
  54
• 1.5 Dismantling and assembling intake manifold - Upper part
  63
• 1.6 Dismantling and assembling intake manifold - lower part
  65
• 1.7 Dismantling and assembling air cleaner
  66
• 1.8 Safety precautions
  67
• 1.9 Rules for cleanliness
  68
• 1.10 Technical data
  68
• 2 Checking components
  69
• 2.1 Checking components
  69
• 2.2 Checking Lambda probe heating for Lambda probe before catalyst
  69
• 2.3 Checking Lambda probe heating for Lambda probe after catalyst
  71
• 2.4 Checking air mass meter
  74
• 2.5 Checking throttle valve control part
  76
• 2.6 Checking coolant temperature sender
  83
• 2.7 Checking intake air temperature sender
  87
• 2.8 Checking engine speed sender
  90
• 2.9 Checking injectors
  92
• 2.10 Checking fuel pressure regulator and holding pressure
  96
• 2.11 Checking intake air system for leaks (unmetered air)
  99
• 3 Checking functions
  100
• 3.1 Checking functions
  100
• 3.2 Idling check
  100
• 3.3 Adapting idling speed
  101
• 3.4 Checking Lambda probe and Lambda regulation before catalyst
  103
• 3.5 Checking Lambda probe and Lambda regulation after catalyst
  106
• 3.6 Checking Lambda probe ageing Lambda probe 1
  111
• 3.7 Checking engine operating mode
  112
• 3.8 Checking intake air preheating
  113
• 4 Engine control unit
  115
• 4.1 Engine control unit
  115
• 4.2 Checking control unit voltage supply
  115
• 4.3 Procedure after voltage supply open circuit
  116
• 4.4 Replacing engine control unit
  117
• 4.5 Coding engine control unit
  117
• 4.6 Adapting engine control unit to throttle valve control part
  119
• 5 Checking additional signals
  120
• 5.1 Checking additional signals
  120
• 5.2 Checking speed signal
  120
• 5.3 Checking signal from/to air conditioning system
  122
• 5.4 Checking driving range signal
  123
• 5.5 Checking data bus
  124
• Ignition system
  126
• 1 Servicing ignition system
  126
• 1.1 Servicing ignition system
  126
• 1.2 General notes on ignition system
  126
• 1.3 Removing and installing parts of the ignition system
  127
• 1.4 Safety precautions
  130
• 1.5 Test data, spark plugs
  131
• 1.6 Installing distributor
  131
• 1.7 Checking and adjusting distributor basic setting
  133
• 1.8 Checking Hall sender
  134
• 1.9 Checking ignition transformer and output stage
  135
• 1.10 Checking knock sensor
  138
• 1.11 Check misfiring recognition
  140