Motronic injection and igni- tion system (1.8 ltr. 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 EPC warning lamp (fault lamp for electronic accelerator) in dash panel insert
  3
• 1.5 Connecting fault reader V.A.G 1551 and selecting engine control unit
  3
• 2 Fault memory
  9
• 2.1 Fault memory
  9
• 2.2 Interrogating and erasing fault memory
  9
• 2.3 Automatic test sequence
  10
• 3 Fault table: SAE P0 codes
  11
• 3.1 Fault table: SAE P0 codes
  11
• 4 Fault table: SAE P1 codes
  14
• 4.1 Fault table: SAE P1 codes
  14
• 5 Final control diagnosis
  22
• 5.1 Final control diagnosis
  22
• 5.2 Performing final control diagnosis
  22
• 6 Readiness code
  33
• 6.1 Readiness code
  33
• 6.2 Reading readiness code
  34
• 6.3 Generating readiness code
  35
• 7 Measured value blocks
  40
• 7.1 Measured value blocks
  40
• 7.2 Safety precautions
  40
• 7.3 Read measured value block
  40
• 8 Evaluating measured value blocks, display groups 0...9 -Basic functions-
  42
• 8.1 Evaluating measured value blocks, display groups 0...9 -Basic functions-
  42
• 9 Evaluating measured value blocks, display groups 10...29 -Ignition-
  46
• 9.1 Evaluating measured value blocks, display groups 10...29 -Ignition-
  46
• 10 Evaluating measured value blocks, display grps 30...49, 99 -Lambda regulation-
  48
• 10.1 Evaluating measured value blocks, display grps 30...49, 99 -Lambda regulation-
  48
• 11 Evaluating measured value blocks, display groups 50...69 -Speed regulation-
  54
• 11.1 Evaluating measured value blocks, display groups 50...69 -Speed regulation-
  54
• 12 Evaluating measured value blocks, display groups 70...79 -Reducing emissions-
  58
• 12.1 Evaluating measured value blocks, display groups 70...79 -Reducing emissions-
  58
• 14 Evaluating measured block values 90...97 -Performance increase-
  59
• 14.1 Evaluating measured block values 90...97 -Performance increase-
  59
• 16 Evaluating measured value blocks, display groups 120...129 -Communication-
  61
• 16.1 Evaluating measured value blocks, display groups 120...129 -Communication-
  61
• Mixture preparation, Injection
  63
• 1 Servicing injection system
  63
• 1.1 Servicing injection system
  63
• 1.2 Fitting locations overview
  63
• 1.3 General notes on injection
  72
• 1.4 Dismantling and assembling air cleaner
  73
• 1.5 Dismantling and assembling fuel rail with injectors
  76
• 1.6 Removing and installing parts of intake manifold change-over
  77
• 1.7 Safety precautions
  80
• 1.8 Rules for cleanliness
  81
• 1.9 Technical data
  81
• 2 Checking components
  82
• 2.1 Checking components
  82
• 2.2 Checking Lambda probe heating for Lambda probe before catalyst
  82
• 2.3 Checking Lambda probe heating for Lambda probe after catalyst
  84
• 2.4 Checking air mass meter
  87
• 2.5 Checking throttle valve control part
  89
• 2.6 Checking coolant temperature sender
  92
• 2.7 Checking intake air temperature sender
  96
• 2.8 Checking engine speed sender
  100
• 2.9 Checking injectors
  101
• 2.10 Checking fuel pressure regulator and holding pressure
  107
• 2.11 Checking intake air system for leaks (unmetered air)
  110
• 3 Checking functions
  111
• 3.1 Checking functions
  111
• 3.2 Idling check
  111
• 3.3 Adapting idling speed
  113
• 3.4 Checking Lambda probe and Lambda regulation before catalyst
  114
• 3.5 Checking Lambda probe and Lambda regulation after catalyst
  117
• 3.6 Checking Lambda probe ageing Lambda probe 1
  122
• 3.7 Checking engine operating mode
  123
• 3.8 Checking intake manifold change-over
  125
• 4 Engine control unit
  126
• 4.1 Engine control unit
  126
• 4.2 Checking control unit voltage supply
  126
• 4.3 Procedure after voltage supply open circuit
  128
• 4.4 Replacing engine control unit
  128
• 4.5 Coding engine control unit
  130
• 4.6 Coding variations of engine control unit
  131
• 4.7 Adapting engine control unit to throttle valve control part
  131
• 4.8 Adapting engine control unit to electronic immobilizer
  133
• 4.9 Learning kick-down point
  134
• 5 Checking additional signals
  135
• 5.1 Checking additional signals
  135
• 5.2 Checking speed signal
  135
• 5.3 Checking signal from/to air conditioning system
  136
• 5.4 Checking signal from clutch pedal switch
  137
• 5.5 Checking signal from brake light switch and brake pedal switch
  140
• 5.6 Checking driving range signal
  142
• 5.7 Checking data bus
  143
• Ignition system
  145
• 1 Servicing ignition system
  145
• 1.1 Servicing ignition system
  145
• 1.2 General notes on ignition system
  145
• 1.3 Removing and installing parts of the ignition system
  146
• 1.4 Safety precautions
  153
• 1.5 Test data, spark plugs
  155
• 1.6 Checking Hall sender
  155
• 1.7 Checking ignition coils with output stage
  156
• 1.8 Checking knock sensor
  161
• 1.9 Check misfiring recognition
  162