4LV injection / 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 Significance of EPC warning lamp (fault lamp for electronic accelerator) in dash panel insert
  2
• 1.5 Significance of exhaust emissions warning lamp
  3
• 1.6 Connecting fault reader
  4
• 2 Fault memory
  7
• 2.1 Fault memory
  7
• 2.2 Interrogating and erasing fault memory
  7
• 3 Fault table: from V.A.G code 16486 / SAE P0 codes
  9
• 3.1 Fault table: from V.A.G code 16486 / SAE P0 codes
  9
• 4 Fault table: from V.A.G code 17510 / SAE P1 codes
  13
• 4.1 Fault table: from V.A.G code 17510 / SAE P1 codes
  13
• 5 Final control diagnosis
  21
• 5.1 Final control diagnosis
  21
• 5.2 Performing final control diagnosis
  21
• 6 Readiness code
  28
• 6.1 Readiness code
  28
• 6.2 Reading readiness code
  28
• 6.3 Generating readiness code
  29
• 7 Measured value blocks
  33
• 7.1 Measured value blocks
  33
• 7.2 Safety precautions
  33
• 7.3 Read measured value block
  33
• 8 Evaluating measured value blocks, display groups 0...6 -Basic functions
  35
• 8.1 Evaluating measured value blocks, display groups 0...6 -Basic functions
  35
• 9 Evaluating measured value blocks, display groups 10...29 -Ignition-
  39
• 9.1 Evaluating measured value blocks, display groups 10...29 -Ignition-
  39
• 11 Evaluating measured value blocks, display groups 50...69 -Speed regulation-
  48
• 11.1 Evaluating measured value blocks, display groups 50...69 -Speed regulation-
  48
• 13 Evaluating measured value blocks, display group 100 -Readiness code-
  52
• 13.1 Evaluating measured value blocks, display group 100 -Readiness code-
  52
• 14 Evaluating measured value blocks, display groups 120...129 -Communication-
  52
• 14.1 Evaluating measured value blocks, display groups 120...129 -Communication-
  52
• Mixture preparation, Injection
  54
• 1 Servicing injection system
  54
• 1.1 Servicing injection system
  54
• 1.2 Fitting locations overview
  54
• 1.3 General notes on injection
  58
• 1.4 Removing and installing parts of the injection system
  59
• 1.5 Dismantling and assembling intake manifold
  69
• 1.6 Dismantling and assembling fuel rail with injectors
  72
• 1.7 Dismantling and assembling air cleaner
  75
• 1.8 Safety precautions
  78
• 1.9 Rules for cleanliness
  79
• 1.10 Technical data
  80
• 2 Checking components
  80
• 2.1 Checking components
  80
• 2.2 Checking Lambda probe heating for Lambda probe before catalyst
  80
• 2.3 Checking Lambda probe heating for Lambda probe after catalyst
  83
• 2.4 Checking throttle valve control part
  85
• 2.5 Checking intake manifold pressure sender
  87
• 2.6 Checking intake air temperature sender
  90
• 2.7 Checking coolant temperature sender
  94
• 2.8 Checking engine speed sender
  98
• 2.9 Checking injectors
  100
• 2.10 Checking fuel pressure regulator and holding pressure
  107
• 2.11 Checking intake air system for leaks (unmetered air)
  110
• 2.12 Checking intake air preheating
  111
• 3 Checking functions
  112
• 3.1 Checking functions
  112
• 3.2 Idling check
  112
• 3.3 Adapting idling speed
  114
• 3.4 Checking Lambda probe and Lambda regulation before catalyst
  115
• 3.5 Checking Lambda probe and Lambda regulation after catalyst
  118
• 3.6 Checking engine operating mode
  122
• 4 Engine control unit
  123
• 4.1 Engine control unit
  123
• 4.2 Checking control unit voltage supply
  123
• 4.3 Procedure after voltage supply open circuit
  125
• 4.4 Replacing engine control unit
  126
• 4.5 Coding engine control unit
  127
• 4.6 Coding variants of engine control unit
  128
• 4.7 Adapting engine control unit to throttle valve control part
  128
• 4.8 Adapting engine control unit to electronic immobilizer
  130
• 5 Checking additional signals
  131
• 5.1 Checking additional signals
  131
• 5.2 Checking speed signal
  131
• 5.3 Checking signal from/to air conditioning system
  133
• 5.4 Checking signal from brake light switch and brake pedal switch
  134
• 5.5 Checking driving range signal
  136
• 5.6 Checking rpm signal
  137
• 5.7 Checking data bus
  138
• Ignition system
  140
• 1 Servicing ignition system
  140
• 1.1 Servicing ignition system
  140
• 1.2 General notes on ignition system
  140
• 1.3 Removing and installing parts of the ignition system
  141
• 1.4 Safety precautions
  143
• 1.5 Test data, spark plugs
  144
• 1.6 Checking Hall sender
  145
• 1.7 Checking ignition transformer
  147
• 1.8 Checking knock sensor
  150
• 1.9 Check misfiring recognition
  152