1.8L - Fuel Injection Ignition, Engine Code(S): AWW, AWP (A4 Platform)

• 01 On Board Diagnostic (OBD)
  • On Board Diagnostic (OBD)
    • On Board Diagnostic (OBD), features
    • On Board Diagnostic (OBD), technical data
      • Notes
      • Selectable functions (modes) under address word 33, CARB / OBD II
    • Exhaust gas warning lamp MIL (Malfunction Indicator Lamp), significance
      • Notes
      • Functional check:
    • Electronic Power Control (EPC) warning lamp in instrument cluster, significance
      • Notes
      • Functional check:
    • VAG1551 scan tool, connecting and selecting engine control module
      • Notes
      • Test conditions
      • Work sequence
    • Vehicle Diagnostic, Testing and Information System VAS5051 , connecting and selecting engine control module
      • Notes
      • Test conditions
      • Work sequence
      • Select operating mode:
      • Select vehicle system:
      • Select diagnostic function:
  • Diagnostic Trouble Code (DTC) memory
    • Diagnostic Trouble Code (DTC) memory
    • DTC memory (functions 02 and 05), checking and erasing
      • Notes
      • Work sequence
    • Automatic test sequence
  • Diagnostic Trouble Code (DTC) table: SAE P0 codes
    • Diagnostic Trouble Code (DTC) table: SAE P0 codes
    • DTCs P0010 to P0704, VAG4094 to 17088
    • DTCs P1102 to P1238, VAG17510 to 18570
  • Output Diagnostic Test Mode
    • Output Diagnostic Test Mode (function 03), performing
      • Notes
      • Test conditions
      • Work sequence
      • Activating evaporative emission (EVAP) canister purge regulator valve N80 :
      • Activating secondary air injection (AIR) solenoid valve N112 :
      • Activating secondary air injection (AIR) pump relay J299 :
      • If the LED does not flash but the secondary air injection pump relay clicks:
      • If LED does not flash and secondary air injection pump relay does not click:
      • Activating Wastegate bypass regulator valve N75 :
      • Activate Camshaft Adjustment Valve 1 N205 :
      • Activating leak detection pump (LDP) V144 :
      • Activating Turbocharger Recirculating Valve N249
  • Readiness code
    • Readiness code
    • Readiness code, reading
      • Notes
      • Work sequence
    • Readiness code for engine code AWP, generating
      • Notes
      • Check conditions
      • Work sequence
      • Test conditions
    • Readiness code for engine code AWW, generating
      • Notes
      • Test conditions
      • Work sequence
  • Measuring Value Block
    • Safety precautions
    • Read Measuring Value Block (function 08)
      • Notes
      • Test conditions
      • Work sequence
    • Measuring value blocks, evaluating display groups 0 to 9 (Basic functions)
      • Display group 1 (Basic functions)
      • Significance of 8-digit number block for readiness code
      • Evaluating display group 1, display zone 1 - Engine speed (idling speed)
      • Display group 2 (Basic functions) Mass Air Flow (MAF) sensor
      • Evaluating display group 2, display zone 3 - Injection period
      • Evaluating display group 2, display zone 4 - Air mass drawn in
      • Display group 3 (Basic functions) Mass Air Flow (MAF) sensor
      • Display group 4 (Basic functions)
      • Evaluating display group 4, display zone 2 - Control module voltage supply
      • Evaluating display group 4, display zone 3 - Coolant temperature
      • Evaluating display group 4, display zone 4 - Intake air temperature
      • Display group 5 (Basic functions)
      • Display group 6 (Basic functions)
      • Only engine code AWP with automatic transmission:
    • Measuring value blocks, evaluating display groups 10 to 29 (Ignition)
      • Display group 10 (Ignition)
      • Evaluating display group 10, display zone 2 - Engine load
      • Evaluating display group 10, display zone 3 - Throttle valve angle
      • Display group 14 (Ignition) Misfire recognition
      • Display group 15 -Ignition- Misfire recognition Cyl. 1 to Cyl. 3
      • Display group 16 -Ignition- misfire recognition Cyl.
      • Evaluating display group 14, display zone 3 - Total number of misfires
      • Display group 22 (Ignition) Knock control
      • Display group 23 (Ignition) Knock control
      • Evaluating display groups 22/23, display zones 3 and 4 - Retardation of ignition
      • Display group 28 (Ignition) knock control
    • Measuring value blocks, evaluating display groups 30 to 49, 99, 107 (oxygen sensor control)
      • Display group 30 (oxygen sensor control)
      • Significance of 3 digit number block in display zones 1 and 2
      • Display group 32 (oxygen sensor control) Oxygen sensor learned values
      • Evaluating display zone 32, display zones 1 and 2 - Oxygen sensor learned values
      • Display group 33 (oxygen sensor control) Oxygen sensor control values
      • Evaluating display group 33, display zone 1 - oxygen sensor regulator before catalyst
      • Display group 34 (oxygen sensor control) oxygen sensor diagnostic before catalyst (checking age via cycle duration monitoring)
      • Display group 36 (oxygen sensor control) Operational readiness of oxygen sensor after catalyst
      • Evaluating display group 36, display zone 1 - Oxygen sensor voltage, oxygen sensor after catalyst
      • Display group 37 (oxygen sensor control) oxygen sensor - dwell period test
      • Display group 41 (oxygen sensor control) oxygen sensor heating
      • Display group 43 (oxygen sensor control) oxygen sensor diagnostic after catalyst (ageing check)
      • Display group 46 (oxygen sensor control) Catalyst diagnostic (conversion test)
      • Display group 99 -Oxygen sensor control - oxygen sensor operating condition
      • Display group 107 -Oxygen sensor control- Diagnostic of fuel system
    • Measuring value blocks, evaluating display groups 50 to 69 (Speed regulation)
      • Display group 50 (Speed regulation) Operating condition
      • Display group 54 (Speed regulation)
      • Display group 55 (Speed regulation) Idling stabilization
      • Significance of 5 digit number block
      • Display group 56 (Speed regulation) Idling speed stabilization
      • Display group 60 (Speed regulation) Adaptation EPC system * See note
      • Display group 61 (Speed regulation) Electronic Power Control (EPC)
      • Display group 62 (Speed regulation) Electronic Power Control (EPC)
      • Vehicles with automatic transmissions
      • Vehicles with engine code AWP and cruise control system (CCS)
      • Significance of the numbers in the 8-digit display, display field 2, brake and cruise control switch
      • Significance of the numbers in the 8-digit display, display field 4, cruise control switch
      • Display group 66 -Cruise control system
      • Significance of the figures in the 4 digit display, display zone 2, brakes, clutch and CCS switches position
      • Significance of the figures in the 4 digit display, display zone 4, CCS control switches
    • Measuring value blocks, evaluating display groups 70 to 79 (emission reduction)
      • Display group 70 (emission reduction) Evaporative Emission (EVAP) system diagnostic (fuel tank venting system)
      • Display group 71 -Exhaust reduction- Leak diagnostic system
      • Display group 77 (emission reduction) Secondary air system diagnostic
    • Measured value blocks, evaluating display groups 86 to 89, 100 (Readiness code)
      • Display group 89 -Trip odometer- Exhaust Malfunction Indicator Lamp (MIL) on
      • Display group 100 (Readiness code)
      • Significance of 8 digit number block for readiness code
    • Measuring value blocks, evaluating display groups 90 to 97 (Performance increase)
      • Display group 91 (Performance increase) Camshaft adjustment
      • Display group 94 (Performance increase) Camshaft adjustment
    • Measuring value blocks, evaluating display groups 110 to 119 (Charge pressure control)
      • Display group 111 - Charge pressure control - adaptation valves for boost pressure limitation
      • Display group 113 - Charge pressure control
      • Evaluating display group 113, display zone 4 - atmospheric pressure
      • Display group 114 (Charge pressure control)
      • Display group 115 (Charge pressure control)
      • Display group 116 - Charge pressure control
      • Display group 117 - Charge pressure control
      • Display group 118 - Charge pressure control
      • Display group 119 (Charge pressure control)
    • Measuring value blocks, evaluating display groups 120 to 129 (Communication)
      • Display group 120 -Traction control -ASR-
      • Display group 122 -Transmission (automatic only)
      • Display group 125 -Communication -data bus messages-
      • Display group 126 -Communication -data bus messages-
• 24 Multiport Fuel Injection (MFI)
  • Injection system, servicing
    • Component locations, overview
    • Injection, general notes
    • Injection system components, removing and installing
    • Air cleaner, disassembling and assembling
    • Fuel rail with injectors, disassembling and assembling
    • Safety precautions
    • Rules of cleanliness
    • Technical data
  • Components, checking
    • Oxygen sensor heating for oxygen sensor before catalyst, checking
      • Notes
      • Check conditions
      • Test sequence
    • Oxygen sensor heating for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC), checking
      • Notes
      • Check conditions
      • Test sequence
    • Mass Air Flow (MAF) Sensor G70 , checking
      • Notes
      • Check conditions
      • Test sequence
      • Checking voltage supply for Mass Air Flow (MAF) sensor
      • Testing signal and Ground (GND) wires for Mass Air Flow (MAF) sensor
    • Throttle valve control module, checking
      • Notes
      • Test conditions
      • Test sequence
      • Voltage supply and wiring to control module, checking
    • Engine Coolant Temperature (ECT) sensor G62 , checking
      • Notes
      • Test conditions
      • Test sequence
      • 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
      • Test sequence
      • Continuation of check when display reads approx. -48 ° C:
      • Continuation of check when display reads approx. 143 ° C:
      • Checking wiring
    • Engine speed (RPM) sensor G28 , checking
      • Notes
      • Test sequence
    • Injectors, checking
      • Notes
      • Check conditions
      • Test sequence
      • Checking resistance of injectors
      • Checking voltage supply
      • Checking activation and voltage supply
      • Check injectors for leaks and quantity injected
        • Notes
        • Test conditions
        • Test sequence
        • Checking for leaks
        • Checking injected quantity
    • Fuel pressure regulator and holding pressure, checking
      • Notes
      • Test sequence
    • Intake air system (unmetered air), checking for leaks
      • Checking with engine leak detector spray G 001 800 A1
      • Test conditions
      • Test sequence
  • Checking functions
    • Idling check
      • Notes
      • Check conditions
      • Test sequence
      • Checking idling speed
    • Idling speed, adapting
      • Notes
      • Test conditions
      • Work sequence
    • Oxygen sensor and oxygen sensor control before catalyst, checking
      • Notes
      • Check conditions
      • Functional check
      • Significance of 3 digit number block in display zone 1:
      • Checking oxygen sensor wiring
    • Oxygen sensor and oxygen sensor control after catalyst, checking
      • Notes
      • Check conditions
      • Functional check
      • Significance of 3 digit number block in display zone 1:
      • Possible causes of malfunction if sensor control frequency is too slow:
      • Checking basic voltage
      • Checking oxygen sensor wiring, oxygen sensor 2
    • Oxygen sensor aging, oxygen sensor before catalyst for engine code AWP, checking
      • Notes
      • Test conditions
      • Functional check
    • Oxygen sensor aging, oxygen sensor before catalyst for engine code AWW, checking
      • Notes
      • Test conditions
      • Functional check
    • Oxygen sensor aging, oxygen sensor after catalyst for engine code AWP, checking
      • Notes
      • Test conditions
      • Functional check
    • Oxygen sensor aging, oxygen sensor after catalyst for engine code AWW, checking
      • Notes
      • Test conditions
      • Functional check
    • Operational readiness of oxygen sensor after catalyst, checking
      • Notes
      • Test conditions
      • Functional check
    • Engine operating mode, checking
      • Notes
      • Test conditions
      • Test sequence
  • Engine Control Module (ECM)
    • Control module voltage supply, checking
      • Notes
      • Check conditions
      • Test sequence
      • Checking voltage supply terminal 30
      • Checking voltage supply terminal 15
    • Procedure after voltage supply open circuit
      • Notes
      • Work sequence
    • Engine control module, replacing
      • Notes
      • Work sequence
    • Engine control module, coding
      • Notes
      • Work sequence
    • Coding variations of engine control module
    • Engine control module, adapting to throttle valve control module
      • Notes
      • Test conditions
      • Work sequence
    • Engine control module, adapting to electronic immobilizer
      • Notes
      • Conditions
      • Work sequence
    • Kick-down point, learning
      • Notes
      • Test conditions
      • Test sequence
  • Additional signals, checking
    • Vehicle speed signal, checking
      • Notes
      • Check conditions
      • Test sequence
    • Signal from/to air conditioning system, checking
      • Notes
      • Test conditions
      • Test sequence
    • Signal from clutch pedal switch for engine code AWP, checking
      • Notes
      • Check conditions
      • Test sequence
    • Signal from clutch pedal switch for engine code AWW, checking
      • Notes
      • Check conditions
      • Test sequence
    • Signal from brake light switch and brake pedal switch, checking
      • Notes
      • Check conditions
      • Test sequence
    • Signal from power steering pressure switch, checking
      • Notes
      • Check conditions
      • Test sequence
      • Checking wiring connections
    • Cruise Control System (CCS), checking
      • Notes
      • Check conditions
      • Test sequence
    • Driving range signal, checking
      • Notes
      • Test conditions
      • Test sequence
    • Data bus, checking
      • Notes
      • Test conditions
      • Test sequence
      • If resistance measurement is outside specified range:
      • If resistance value is within specified range:
• 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 G40 , checking
      • Notes
      • Check conditions
      • Test sequence
    • Ignition coils with output stage, checking
      • Notes
      • Check conditions
      • Test sequence
        • Checking voltage supply
        • Checking activation
        • Checking wiring
    • Knock sensor, checking
      • Notes
      • Test conditions
      • Checking function
      • Continuation:
      • Checking resistance of knock sensors
      • Checking wiring
    • Misfiring recognition, checking
      • Notes
      • Test conditions
      • Test sequence
        • Notes
        • Evaluating display group 14, display zone 3 - total number of exhaust damaging misfires
        • Evaluating display groups 15, display zones 1 to 3 and display group 16, display zone 1 - total number of exhaust damaging misfires Cyl. 1 to Cyl. 4