Motronic injection and ignition system (1.8 l 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 the exhaust gas warning lamp
  2
• 1.5 Significance of EPC warning lamp (fault lamp for electronic accelerator) in dash panel insert
  3
• 1.6 Connecting fault reader
  4
• 2 Fault memory
  7
• 2.1 Fault memory
  7
• 2.2 Automatic test sequence
  7
• 2.3 Interrogating and erasing fault memory
  8
• 3 Fault table: SAE P0 codes
  9
• 3.1 Fault table: SAE P0 codes
  9
• 4 Fault table: SAE P1 codes
  15
• 4.1 Fault table: SAE P1 codes
  15
• 5 Readiness code
  24
• 5.1 Readiness code
  24
• 5.2 Reading readiness code
  24
• 5.3 Generating readiness code
  25
• 6 Final control diagnosis
  32
• 6.1 Final control diagnosis
  32
• 6.2 Performing final control diagnosis
  32
• 7 Measured value blocks
  42
• 7.1 Measured value blocks
  42
• 7.2 Safety precautions
  42
• 7.3 Read measured value block
  42
• 8 Evaluating measured value blocks, display groups 0...9 -Basic functions-
  43
• 8.1 Evaluating measured value blocks, display groups 0...9 -Basic functions-
  43
• 9 Evaluating measured value blocks, display groups 10...29 -Ignition-
  47
• 9.1 Evaluating measured value blocks, display groups 10...29 -Ignition-
  47
• 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 value blocks, display groups 120...129 -Communication-
  61
• 14.1 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
  67
• 1.4 Removing and installing parts of the injection system
  67
• 1.5 Dismantling and assembling air cleaner
  73
• 1.6 Dismantling and assembling fuel rail with injectors
  74
• 1.7 Safety precautions
  75
• 1.8 Rules for cleanliness
  76
• 1.9 Technical data
  77
• 2 Checking components
  77
• 2.1 Checking components
  77
• 2.2 Checking Lambda probe heating for Lambda probe before catalyst
  77
• 2.3 Checking Lambda probe heating for Lambda probe after catalyst
  80
• 2.4 Checking air mass meter
  83
• 2.5 Checking throttle valve control part
  86
• 2.6 Checking coolant temperature sender
  89
• 2.7 Checking intake air temperature sender
  93
• 2.8 Checking engine speed sender
  96
• 2.9 Checking injectors
  98
• 2.10 Checking fuel pressure regulator and holding pressure
  104
• 2.11 Checking intake air system for leaks (unmetered air)
  108
• 3 Checking functions
  109
• 3.1 Checking functions
  109
• 3.2 Idling check
  109
• 3.3 Checking Lambda probe and Lambda regulation before catalyst
  111
• 3.4 Checking Lambda probe and Lambda regulation after catalyst
  113
• 3.5 Checking Lambda probe ageing, Lambda probe before catalyst
  117
• 3.6 Checking Lambda probe ageing, Lambda probe after catalyst
  118
• 3.7 Checking engine operating mode
  119
• 4 Engine control unit
  121
• 4.1 Engine control unit
  121
• 4.2 Checking control unit voltage supply
  121
• 4.3 Procedure after voltage supply open circuit
  123
• 4.4 Replacing engine control unit
  123
• 4.5 Adapting engine control unit to throttle valve control part and EGR valve
  124
• 4.6 Learning kick-down point
  126
• 4.7 Checking data bus matching resistor
  127
• 5 Checking additional signals
  128
• 5.1 Checking additional signals
  128
• 5.2 Checking speed signal
  128
• 5.3 Checking signal from/to air conditioning system
  129
• 5.4 Checking signal from clutch pedal switch
  131
• 5.5 Checking signal from brake light switch and brake pedal switch
  133
• 5.6 Checking driving range signal
  135
• Ignition system
  137
• 1 Servicing ignition system
  137
• 1.1 Servicing ignition system
  137
• 1.2 General notes on ignition system
  137
• 1.3 Removing and installing parts of the ignition system
  137
• 1.4 Safety precautions
  139
• 1.5 Test data, spark plugs
  140
• 1.6 Checking Hall sender
  140
• 1.7 Checking ignition coils with output stage
  142
• 1.8 Checking knock sensor
  145
• 1.9 Check misfiring recognition
  147