Section 34 (1.8L - Fuel Injection & Ignition, Engine Code(S): AWD)

• 01 On Board Diagnostic (OBD)
  • On Board Diagnostic (OBD), general information
    • On Board Diagnostic (OBD), characteristics
    • On Board Diagnostic (OBD), technical data
      • Notes
      • Equipment
      • Selectable functions when using VAG1551/1552 or VAS5051
      • Selectable functions (modes) under address word 33, CARB / OBD II
    • Malfunction Indicator Lamp (MIL), significance
    • EPC warning lamp (malfunction lamp for power accelerator activation) in instrument cluster, significance
    • VAG1551 Scan Tool (ST), connecting and selecting "Engine Electronics" address word 01
    • VAS5051 tester, connecting and selecting "Engine Electronics" vehicle system 01
  • Diagnostic Trouble Code (DTC) memory
    • Diagnostic Trouble Code (DTC) memory
    • DTC memory of Engine Control Module (ECM), checking (scan tool function 02) and erasing (scan tool function 05)
    • Automatic test sequence
  • Diagnostic Trouble Code (DTC) table: SAE P0-Codes
    • Diagnostic Trouble Code (DTC) table: SAE P0-Codes
    • DTCs: P0101 to P0606 , VAG 16485 to 16990
  • Diagnostic Trouble Code (DTC) table: SAE P1-Codes
    • Diagnostic Trouble Code (DTC) table: SAE P1-Codes
    • DTCs: P1102 to P1853 , VAG 17510 to 18261
  • Output Diagnostic Test Mode (DTM) (scan tool function 03)
    • Output Diagnostic Test Mode (DTM), initiating
  • Readiness code
    • Readiness code
    • Readiness code, checking
    • Readiness code, generating
  • Measuring value blocks
    • Safety precautions
    • Read Measuring Value Block (scan tool function 08)
  • Measuring value blocks, evaluating, display groups 0-9 (basic functions)
    • Measuring value blocks, evaluating, display groups 0-9 (basic functions)
      • Display group 1 -basic functions-
      • Explanation of 8 digit numeric block
      • Evaluation display group 1, display field 1 - engine speed (idle speed)
      • Display group 2 -basic functions- Mass Air Flow (MAF) sensor
      • Evaluation display group 2, display field 3 - injection timing
      • Evaluation display group 2, display field 4 - mass air taken in
      • Display group 3 -basic function- Mass Air Flow (MAF) sensor
      • Display group 4 -basic functions-
      • Evaluation display group 4, display field 2 - control module voltage supply
      • Evaluation display group 4, display field 3 - coolant temperature
      • Evaluation display group 4, display field 4 - intake air temperature
      • Display group 5 -basic function-
      • Display group 6 -basic function-
  • Measuring value blocks, evaluating, display groups 10-29 (ignition)
    • Measuring value blocks, evaluating, display groups 10-29 (ignition)
      • Display group 10 -ignition-
      • Evaluation display group 10, display field 2 - engine load
      • Evaluation display group 10, display field 3 - throttle valve angle
      • Display group 14 -ignition-, misfire recognition
      • Evaluation display group 14, display field 3 - number of ignition misfires
      • Display group 22 -ignition- knock control
      • Display group 23 -ignition- knock control
      • Evaluation display groups 22/23, display fields 3 and 4 - ignition timing angle retarding
      • Display group 28 -ignition- knock control
  • Measuring value blocks, evaluating, display groups 30-49, 99, 107 (oxygen sensor control)
    • Measuring value blocks, evaluating, display groups 30-49, 99, 107 (oxygen sensor control)
      • Display group 30 -oxygen sensor control-
      • Meaning of 3 digit number block in display fields 1 and 2:
      • Display group 32 -oxygen sensor control- oxygen sensor adaptation values
      • Evaluation display group 32, display field 2 through 4- oxygen sensor adaptation values
      • Display group 33 -oxygen sensor control- oxygen sensor control values
      • Evaluation display group 33, display field 1 - oxygen sensor control before catalytic converter
      • Evaluation display group 33, display field 2 - oxygen sensor voltage before catalytic converter
      • Display group 34 -oxygen sensor control- diagnostic of oxygen sensor before catalytic converter (aging test via monitoring period duration)
      • Display group 36 -operational readiness of -oxygen sensor control behind catalytic converter-
      • Evaluation display group 36, display field 1 - sensor voltage of oxygen sensor behind catalytic converter
      • Display group 37 -oxygen sensor control- dwell time test
      • Display group 41 -oxygen sensor control- oxygen sensor heating
      • Display group 43 -oxygen sensor control- diagnostic of oxygen sensor behind catalytic converter (aging test)
      • Display group 46 -oxygen sensor control- diagnostic of catalytic converter (conversion test)
      • Display group 99 -oxygen sensor control- operating condition oxygen sensor control
      • Display group 107 -oxygen sensor control- fuel system diagnostic
  • Measuring value blocks, evaluating, display groups 50-69 (RPM regulation)
    • Measuring value blocks, evaluating, display groups 50-69 (RPM regulation)
      • Display group 50 -RPM regulation- operating conditions
      • Display group 54 -RPM regulation-
      • Display group 55 -RPM regulation- idle stabilization
      • Explanation of 5-digit indication
      • Display group 56 -RPM regulation- idle stabilization
      • Display group 60 -RPM regulation- adaptation EPC system 1)
      • Display group 61 -RPM regulation- EPC system
      • Display group 62 -RPM regulation- EPC system
      • Vehicles with automatic transmission
      • Vehicles with cruise control
      • Explanation of digits in 4-digit indication, display field 2, switch for brakes, clutch and cruise control.
      • Explanation of digits in the 4-digit indication, display field 4, operating switch for cruise control
  • Measuring value blocks, evaluating, display groups 70-79 (emissions reduction)
    • Measuring value blocks, evaluating, display groups 70-79 (emissions reduction)
      • Display group 70 (emissions reduction) EVAP canister system diagnostic (tank vent system)
      • Display group 71 -emissions reduction- leak diagnostic system
      • Display group 77 -emissions reduction- secondary air system diagnostic
  • Measuring value blocks, evaluating, display groups 86-89, 100 (readiness code)
    • Measuring value blocks, evaluating, display groups 86-89, 100 (readiness code)
      • Display group 89 -trip odometer- exhaust MIL on
      • Display group 100: -readiness code-
      • Explanation of 8-digit readiness code
  • Measuring value blocks, evaluating, display groups 110-119 (charge pressure control)
    • Measuring value blocks, evaluating, display groups 110-119 (charge pressure control)
      • Display group 111 -charge pressure regulation- adaptation values for charge pressure limitation
      • Display group 113 -charge pressure regulation-
      • Evaluation display group 113, display field 4 - atmospheric pressure
      • Display group 114 -charge pressure regulation-
      • Display group 115 -charge pressure regulation-
      • Display group 116 -charge pressure regulation-
      • Display group 117 -charge pressure regulation-
      • Display group 118 -charge pressure regulation-
      • Display group 119 -charge pressure regulation-
  • Measuring value blocks, evaluating, display groups 120-129 (communication)
    • Measuring value blocks, evaluating, display groups 120-129 (communication)
      • Display group 120 -Anti-Slip Regulation- ASR-
      • Display group 122 -transmission (only automatic)
      • Display group 125 -communication -databus messages-
• 24 Multiport Fuel Injection (MFI)
  • Injection system, servicing
    • Component locations, overview
    • General notes on injection
    • Injection system components, removing and installing
    • Air cleaner, disassembling and assembling
    • Fuel rail with injectors, disassembling and assembling
    • Safety precautions
    • Rules for cleanliness
    • Technical data
  • Components, checking
    • Oxygen sensor heating for Heated Oxygen Sensor (HO2S) -G39-, checking
    • Oxygen sensor heating for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-, checking
    • Mass Air Flow (MAF) sensor -G71-, checking
      • Notes
      • Checking voltage supply for Mass Air Flow (MAF) sensor
      • Testing signal and Ground wires for Mass Air Flow (MAF) sensor
    • Throttle valve control module -J338-, checking
      • Notes
      • Checking voltage supply and wiring to control module
    • Engine Coolant Temperature (ECT) sensor -G62-, checking
      • Notes
      • Continuation of check when display approx. -48 ° C:
      • Continuation of check when display approx. 143 ° C:
      • Checking wiring
    • Intake Air Temperature (IAT) sensor -G42-, checking
      • Notes
      • Continuation of check when display reads approx. -48 ° C
      • Continuation of check when display reads approx. 143 ° C
      • Checking wiring
    • Engine speed (RPM) sensor, checking
    • Injectors, checking
      • Notes
      • Check injectors for leaks and quantity injected
    • Fuel pressure regulator and holding pressure, checking
    • Intake air system, checking for leaks (unmetered air)
  • Functions, checking
    • Idle, checking
    • Idle speed, adaptation
    • Oxygen Sensor (O2S) and Oxygen sensor control before catalyst, checking
      • Notes
      • Checking basic voltage
      • Checking Oxygen sensor wiring
    • Oxygen Sensor (O2S) and Oxygen sensor control after catalyst, checking
      • Notes
      • Checking basic voltage
      • Checking Oxygen sensor wiring, Oxygen sensor 2
    • Oxygen sensor aging for Heated Oxygen Sensor (HO2S) -G39-, checking
    • Oxygen sensor aging for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-, checking
    • Operational readiness of Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-, checking
    • Engine operating modes, checking
  • Engine Control Module (ECM)
    • Control module voltage supply, checking
    • Procedure after voltage supply open circuit
    • Engine Control Module (ECM), replacing
    • Code control module (scan tool function 07)
    • Engine Control Module, coding variations
    • Throttle valve control module, adapting to engine control module
    • Electronic immobilizer, adapting to engine control module
    • Kick-down position, learning
  • Auxiliary signals, checking
    • Vehicle speed signal, checking
    • Signal from/to air conditioning system, checking
    • Signal from clutch pedal position switch, checking
    • Signal from brake light switch and brake pedal switch, checking
    • Signal from power steering pressure switch, checking
      • Notes
      • Checking wiring connections
    • Driving range signal, checking
    • Data bus, checking
• 28 Ignition/Glow plug system
  • Ignition system, servicing
    • General notes on ignition system
    • Ignition system components, removing and installing
    • Safety precautions
    • Test data, spark plugs
    • Camshaft Position (CMP) sensor 2 -G163-, checking
    • Ignition coils with output stage, checking
      • Notes
      • Checking activation
      • Checking wiring
    • Knock sensors, checking
    • Misfiring recognition, checking