Audi A4


Audi A4 (AEB) Safety Precautions

Audi A4 (AEB) Safety Precautions

Safety Precautions Audi A4 WARNING The use of nails, paper clips, or another unauthorized materials to back-probe electrical harness connectors is strictly prohibited and may cause damage to the electrical harness connectors, terminal ends or damage to a component. Use only the manufacturers test lead kit or an equivalent aftermarket test lead kit for back-probing all electrical harness connectors. WARNING The fuel system is under pressure! Before opening the system, place rags around the..

Audi A4 (AEB) Spark Plug Test Data

Audi A4 (AEB) Spark Plug Test Data

Spark Plug Test Data Audi A4 Engine code AEB (1.8L / 125 kW Turbo-FSI engine) Engine Control Module (ECM) System identification Motronic ME 5.9 Engine idle speed FWD :740 to 860 RPM (not adjustable)AWD: 760-880 RPM (not adjustable) Engine speed (RPM) limitation Starting at approx. 6800 RPM Ignition sequence 1-3-4-2 Ignition timing Not adjustable, regulated by Electronic control module Ignition system Single coil ignition system with 4 ignition coils (output stages integrate..

Audi A4 (AEB) Speedometer Vehicle Speed Sensor, Checking

Audi A4 (AEB) Speedometer Vehicle Speed Sensor, Checking

Speedometer Vehicle Speed Sensor, Checking Audi A4 The following procedure requires a test drive. Observe all safety precautions. Special tools and workshop equipment required Multimeter . Wiring diagram. Test requirements The Speedometer G21 OK. The Engine Control Module (ECM) fuses OK. Battery voltage at least 12.5 volts. All electrical consumers such as, lights and rear window defroster, switched off. A/C switched off. Ground (GND) connections between engine/transmission..

Audi A4 (AEB) Technical Data

Audi A4 (AEB) Technical Data

Technical Data Audi A4 Engine Code AEB Idle speed (Not adjustable) 820-920 RPM Engine Control Module (ECM) System identification Motronic ME 5.9 Terminals at Engine Control Module (ECM) 80 Replacement part number ETKA (electronic parts catalog) Engine speed (RPM) limitation starting at approx. 6500 RPM Fuel System Pressure at Idle (vacuum hose connected) Approx. 3.5 bar (50 PSI) Fuel System Pressure at Idle (vacuum hose disconnected) Approx. 4.0 bar (58 PSI..

Audi A4 (AEB) Three Way Catalytic Converter, Checking

Audi A4 (AEB) Three Way Catalytic Converter, Checking

Three Way Catalytic Converter, Checking Audi A4 Test requirements Battery voltage at least 12.5 volts. Oxygen Sensors OK. No leaks or damage to exhaust system. Function test Perform the function test in Diagnostic Mode 06. Refer to Go to article . End diagnosis and switch the ignition off. If the specified values are exceeded: Check the exhaust system for leaks. If necessary, repair the leak in the exhaust system. Erase the DTC memory. Refer to Go to article . Perform a road test to..

Audi A4 (AEB) Throttle Valve Control Module, Checking

Audi A4 (AEB) Throttle Valve Control Module, Checking

Throttle Valve Control Module, Checking Audi A4 Note Use only gold-plated terminals when servicing terminals in harness connector of Throttle Valve Control Module J338 . ComponentsThe Throttle Valve Control Module J338 is made up of the following components: Throttle Drive (for Electronic Power Control (EPC)) G186 Throttle Drive Angle Sensor 1 (for Electronic Power Control (EPC)) G187 Throttle liition (TP) Sensor G69 Closed Throttle liition (CTP) Switch F60 ..

Audi A4 (AEB) Voltage Supply, Checking

Audi A4 (AEB) Voltage Supply, Checking

Voltage Supply, Checking Audi A4 Special tools and workshop equipment required Multimeter . Wiring diagram. Test requirements The Motronic Engine Control Module (ECM) J220 fuses OK. Battery voltage at least 12.5 volts. All electrical consumers such as, lights and rear window defroster, switched off. Vehicles with automatic transmission, selector lever in liition “P” or “N”. A/C switched off. Ground (GND) connections between engine/transmission/chassis OK. Ignition switched o..

Audi A4 (AEB) Wastegate Bypass Regulator Valve, Checking

Audi A4 (AEB) Wastegate Bypass Regulator Valve, Checking

Wastegate Bypass Regulator Valve, Checking Audi A4 Special tools and workshop equipment required Multimeter . Wiring diagram. Test requirements Fuse S229 OK. The ignition switched off. Note The voltage for the Wastegate Bypass Regulator Valve N75 is supplied by the Fuel Pump Relay J17 . Test procedure Perform a preliminary check to verify the customers complaint. Refer to Go to article . Start diagnosis Remove the engine cover. Checking internal resistance Disconnect ..

Audi A4 (AEB,ATW) Cooling System Components, Removing and Installing

Audi A4 (AEB,ATW) Cooling System Components, Removing and Installing

Cooling System Components, Removing and Installing Audi A4 WARNING The cooling system is pressurized when the engine is warm. When opening the expansion tank, wear gloves and other appropriate protection, cover the cap using a cloth, and open carefully to relieve system pressure slowly. Note Cooling system is under pressure when engine is warm. If necessary reduce pressure before repair. Secure all hose connections using production-type clamps. Refer to parts catalog. pliers VAG1921 ..

Audi A4 (AEB,ATW) Crankshaft, Removing and Installing

Audi A4 (AEB,ATW) Crankshaft, Removing and Installing

Crankshaft, Removing and Installing Audi A4 Note For engine disassembly and assembly, mount engine to an assembly stand using holding fixture VW540 . Main bearing shells 1, 2, 4 and 5 Install shell without lubrication groove in main bearing cap Install shell with lubrication groove in cylinder block Do not interchange used main bearing shells (mark accordingly) Main bearing cap bolts Always replace 65 Nm plus 1/4 turn (90°) To measure radial play in crankshaft, tighten to 65 N..




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