Engine Controls - on Board Diagnostic (OBD) - 3.0l Avk Audi A4 B6

Equipment

1. Data is transmitted between the control module and the VAS5051 tester via operating mode "On Board Diagnostic (OBD)".
2. DTC memory is designed for permanent memory and is therefore not dependent on voltage supply.
3. Display of stored DTCs occurs after initiation of display mode. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) .
4. DTC memory must be erased after malfunction is repaired. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, ERASING»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__diagnostic-trouble-code-dtc-memory-erasing) .

Exhaust Malfunction Indicator Lamp (MIL) in instrument cluster

If the ECM recognizes malfunctions that lead to a worsening of emissions values, it indicates them by lighting the exhaust Malfunction Indicator Lamp (MIL).

The Engine Control Module (ECM) switches on the exhaust Malfunction Indicator Lamp (MIL) after ignition is switched on. Shortly after engine is started, the exhaust MIL will go out. This requires, first of all, that the Engine Control Module (ECM) does not detect a malfunction that worsens the emissions values and, secondly, that activation of the lamp by the Engine Control Module (ECM) is OK.

If malfunctions that worsen emissions are recognized during operation of the engine, the ECM switches on the exhaust MIL in instrument cluster. An entry is made in DTC memory at the same time.

The Malfunction Indicator Lamp (MIL) can blink or remain lit continuously. DTC memory should be checked in either case. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING .

Continuously lit

There is a malfunction that causes increased emissions. Check DTC memory for Motronic ECM and automatic transmission (if installed).

Check DTC memory if there is a driveability problem or a customer complaint, but the exhaust Malfunction Indicator Lamp (MIL) is not lit. There may be DTCs stored that do not cause the exhaust MIL to light up immediately, but only after engine is started again and malfunction is recognized again.

Blinking

There is a malfunction that causes damage to the catalytic converter in this driving condition (e.g. combustion misfire). In this case, vehicle must only be driven at reduced power!

Function test of warning lamp

1. Switch ignition on. Warning lamp for On Board Diagnostic (Malfunction Indicator Lamp -MIL-) must light up
2. Start engine. Shortly after engine is started, the Malfunction Indicator Lamp (MIL) will go out if there are no malfunctions stored in the DTC memory that relate to the emissions system

Note. The switch-on signal for the Malfunction Indicator Lamp (MIL) is transferred from the Engine Control Module (ECM) to the instrument cluster via CAN-bus. Check data exchange between the Engine Control Module (ECM) and other CAN capable control modules. See DATA EXCHANGE BETWEEN ENGINE CONTROL MODULE AND OTHER CAN-CONTROL MODULES, CHECKING .

Safety precautions

Note. The following points if testers and measuring instruments have to be used during a road test

Test requirements

1. Fuses for engine electronics OK See appropriate System Wiring Diagrams article.
2. Battery voltage at least 12.7 V
3. Ground connections on engine and transmission OK.

Procedure

1. Switch ignition off.
2. Connect up vehicle diagnostic, testing and information system VAS5051 with diagnostic wire VAS5051/1.

Note. A DTC message appears on the display

Display on VAS5051

Scheme 78

1. Press "vehicle self-diagnosis" button.

Display on VAS5051

Scheme 79

Note. The automatic test sequence is carried out by pressing "00 - Check Diagnostic Trouble Code (DTC) memory - Total system" in selection -1-, i.e. the DTC memories of all vehicle systems with On Board Diagnostic (OBD) capability are checked.

Display on VAS5051

Scheme 80

Depending on which function is required "Diagnostic functions" table. See DIAGNOSTIC FUNCTIONS .

1. Switch ignition on. or
2. Start engine.
3. Select vehicle system "01 - Engine electronics" in selection -1-.
4. Wait until next display appears.

Display on VAS5051

Scheme 81

1. Control module identification of engine control module. See «CONTROL MODULE IDENTIFICATION ENGINE CONTROL MODULE»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) .
2. Control module identification of immobilizer. See «CONTROL MODULE IDENTIFICATION, IMMOBILIZER»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) .

CONTROL MODULE IDENTIFICATION, ENGINE CONTROL MODULE (EXAMPLE)

CONTROL MODULE IDENTIFICATION, IMMOBILIZER (EXAMPLE

1. Press -> button.

Display on VAS5051

Scheme 82

1 - Selection of diagnostic functions

DIAGNOSTIC FUNCTIONS

Diagnostic Trouble Code (DTC) memory, checking

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) and select vehicle system "01 - Engine electronics" in selection. Engine should be idling.

Note. If the engine will not start, crank it for at least 5 seconds with the starter and leave the ignition on.

Display on VAS5051

Scheme 83

1. Under -1- select diagnostic function "02 - check DTC memory".

Display on VAS5051

Scheme 84

1. Contents of DTC memory Faults recognized or X Faults recognized
2. Fault Fault code Fault location Fault type

A - If malfunctions were recognized

1. Print out screen content or On Board Diagnostic (OBD) report.
2. Exit function "02 - check DTC memory" by pressing [left arrow] button.

Display on VAS5051

Scheme 85

1. Repair DTC(s) as specified in DTC table. See «DIAGNOSTIC TROUBLE CODE (DTC) TABLE»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__diagnostic-trouble-code-dtc-table) .
2. Reselect diagnostic function "02 - Check DTC memory" and erase the DTC memory. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, ERASING»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__diagnostic-trouble-code-dtc-memory-erasing) .
3. Select diagnostic function "06 - End output" in selection. See «ENDING OUTPUT»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__ending-output) .

B - If no malfunction was recognized

1. Select diagnostic function "06 - End output" in selection. See «ENDING OUTPUT»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__ending-output) .

Diagnostic Trouble Code (DTC) memory, erasing

Note. If it is not possible to erase DTC memory, check it once again and remedy malfunctions.

Requirements

1. DTC memory checked. See «Diagnostic Trouble Code (DTC) memory, checking»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__diagnostic-trouble-code-dtc-memory-checking) .
2. All malfunctions repaired.

After DTC memory has been successfully checked

Display on VAS5051

Scheme 86

1. Under -1- select diagnostic function "05 - Erase DTC memory".

Display on VAS5051

Scheme 87

1. No display (before erasing) or DTC memory erased NOTE: The following message appears in display zone -1-: "DTC memory not yet checked", if the operational sequence was not adhered to exactly. If the DTC memory has been checked beforehand, the DTC memory can only be erased.

1. Press "OK" button in display -2-.
2. Exit function "05 - Erase DTC memory" by pressing [left arrow] button.
3. Check DTC memory again after repair work and erase it if necessary. NOTE: This erases DTCs that have been stored while the malfunction was being fixed, for example, malfunctions that have arisen as a result of connectors being detached.

Ending output

Display on VAS5051

Scheme 88

1. Under -1- select diagnostic function "06 - End output".

Display on VAS5051

Scheme 89

1. Switch ignition off when this display appears and disconnect diagnostic connector.

Diagnostic Trouble Code (DTC) table

Note. If malfunctions occur in the monitored sensors and components, these are stored in the DTC memory together with an indication of type of malfunction. Malfunctions related to EPC are additionally indicated by the warning lamp for the electronic throttle control ("EPC warning lamp") which is situated in the instrument cluster. Notes on EPC system. See ELECTRONIC ENGINE POWER CONTROL (EPC) (ELECTRONIC THROTTLE), CHECKING . Malfunctions that worsen emissions are indicated by an exhaust warning lamp (MIL) that is also located in the instrument cluster. There are malfunctions that cause the exhaust warning lamp to light up immediately after recognition. Malfunctions can also occur that cause the exhaust MIL to light up, but only if malfunction is recognized again after repeated engine starts. Notes for exhaust warning lamp (MIL). See EXHAUST MALFUNCTION INDICATOR LAMP (MIL) IN INSTRUMENT CLUSTER . The DTC table is sorted according to the 5-digit DTC code on the left. Sporadic malfunctions (malfunction occurring from time to time) are indicated as "sporadic" on the display. The word "sporadic" signifies individually occurring, random malfunctions. Do not immediately replace components indicated as faulty by the VAS5051 but: first check the wiring and connectors of these components against the wiring diagram. Check the Ground connections against wiring diagram. This is particularly relevant for malfunctions recorded as "sporadic". After erasing the DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY . The readiness code must be regenerated. See READINESS CODE, GENERATING .

DTCs P0010 to P1130, VAG 16394 to 17538

DIAGNOSTIC TROUBLE CODE (P0010-P0020)

Note. Diagnosis of the camshaft adjustment is influenced by the oil temperature sensor. If the DTC P0196/16580 "Engine Oil Temperature Sensor -G8-, Incorrect signal" is also stored, first check the sensor. In the case of camshaft adjustment malfunctions, check the oil pressure of the engine. See OIL PRESSURE, CHECKING An entry in the DTC memory may also be made due to mechanical problems: running-in process not yet complete (friction), seized camshaft (perform visual check of camshaft bearings).

DIAGNOSTIC TROUBLE CODE (P0021-P0032)

Note. Diagnosis of the camshaft adjustment is influenced by the oil temperature sensor. If the DTC P0196/16580 "Engine oil temperature sensor -G8-, Incorrect signal" is also stored, first check the sensor. In the case of camshaft adjustment malfunctions, check the oil pressure of the engine. See OIL PRESSURE, CHECKING . An entry in the DTC memory may also be made due to mechanical problems: running-in process not yet complete (friction), seized camshaft (perform visual check of camshaft bearings).

DIAGNOSTIC TROUBLE CODE (P0036-P0600)

DIAGNOSTIC TROUBLE CODE (P0601-P1130)

Note. Mult. = multiplicative means that the malfunction occurs throughout the entire speed range and load range.

DTCs P1136 to P3305, VAG 17544 to 19761

DIAGNOSTIC TROUBLE CODE (P1136-P1140)

Note. add. = additive means that malfunction only has effect at idle

DIAGNOSTIC TROUBLE CODE (P1141-P1250)

Note. The malfunction "Fuel level too low" is stored only in conjunction with misfiring or malfunctions concerning oxygen sensor (O2S) control if too little fuel is or was in the tank. The DTC is stored in the control module as static malfunction and is not set as a sporadic DTC even if the vehicle is refuelled in the meantime.

DIAGNOSTIC TROUBLE CODE (P1296-P1539)

DIAGNOSTIC TROUBLE CODE (P1542-P1609)

DIAGNOSTIC TROUBLE CODE (P1610-P1628)

DIAGNOSTIC TROUBLE CODE (P1630-P1999)

Note. Camshaft adjustment diagnostic is influenced by the oil temperature sensor. If the malfunction P0196/16580 "Engine Oil Temperature Sensor -G8-, Incorrect signal" is stored simultaneously, check sensor first. An entry into DTC memory can also occur due to mechanical problems: Running-in process not yet completed (friction), camshaft is seized (perform a visual check of camshaft bearings).

DIAGNOSTIC TROUBLE CODE (P2101-P3305)

Output Diagnostic Test Mode (DTM)

Note. The Output Diagnostic Test Mode (DTM) (shown as Final Control Diagnosis on scan tool) can only be performed with the engine stopped and the ignition switched on. During actuator diagnosis, the individual actuators (with the exception of the injectors) are operated in turn for about one minute unless the next actuator is selected by pressing the => button. The control elements can be checked acoustically or by way of touch. Output Diagnostic Test Mode (DTM) is aborted if it is not switched further after one minute of activation time, the engine is started or an RPM signal is recognized. Before restarting the Output Diagnostic Test Mode (DTM) the engine must be started and the ignition switched off and on again.

Vehicles with control module No. 8E0 909...

OUTPUT DIAGNOSTIC TEST MODE ACTUATION SEQUENCE: VEHICLES WITH CONTROL MODULE NO. 8E0 909...

1. Fuses for engine electronics OK

See appropriate System Wiring Diagram article.

Test sequence

1. Connect vehicle diagnostic, testing and information system VAS5051 and select vehicle system "01-Engine electronics" in selection. Ignition must be switched on.

Display on VAS5051

Scheme 90

1. Under -1- select diagnostic function "03 - Final control diagnosis".

Actuating evaporative emission (EVAP) canister purge regulator valve (tank breather valve)

Display on VAS5051

Scheme 91

A - Control element test waiting: Select next step to continue

1 - Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80

1. Press => button.

Display on VAS5051

A - Control element test running: Continuation permitted

1. This valve is activated (clicks) for approx. 1 minute if the operation is not switched to the next control element by pressing the => button.

Note. Fuel pump must run during activation time, the flow noise at fuel pressure regulator must be clearly audible. If fuel pump does not run, check activation. See CHECKING ACTIVATION OF FUEL PUMP RELAY .

If the valve is not actuated (does not click).

1. Check solenoid valve 1 for Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. See «EVAPORATIVE EMISSION (EVAP) CANISTER PURGE REGULATOR VALVE -N80-, CHECKING»(/audi/a4/b6-2000-2006/remont/fuel-system/#multiport-fuel-injection-mfi-30l-avk) .

Actuating secondary air injection solenoid valve

1. Press => button.

Display on VAS5051

Scheme 92

A - Control element test waiting: Select next step to continue

2 - Secondary Air Injection (AIR) solenoid valve -N112

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. This valve is activated (clicks) for approx. 1 minute if the operation is not switched to the next control element by pressing the => button.

If the valve is not actuated (does not click).

1. Check Secondary Air Injection (AIR) solenoid valve -N112-: See «SECONDARY AIR INJECTION (AIR) SOLENOID VALVE -N112-, CHECKING»(/audi/a4/b6-2000-2006/remont/exhaust/#exhaust-system-emission-controls-30l-avk) .

Actuating secondary air injection pump relay

1. Press => button.

Display on VAS5051

Scheme 93

A - Control element test waiting: Select next step to continue

3 - Secondary Air Injection (AIR) Pump Relay -J299

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. The secondary AIR pump relay -J299- (in relay carrier in electronics box, plenum chamber, position 3) switches the engine for the Secondary Air Injection (AIR) pump motor -V101- on and off at approx. 1 minute intervals if the operation has not been switched to the next control element by pressing the => button.

Scheme 94

If secondary air pump does not run intermittently

1. Check Secondary Air Injection (AIR) pump relay -J299-: See «SECONDARY AIR INJECTION (AIR) PUMP RELAY -J299- AND ACTIVATION, CHECKING»(/audi/a4/b6-2000-2006/remont/exhaust/#exhaust-system-emission-controls-30l-avk) .

Actuation of intake manifold change-over valve

1. Press => button.

Display on VAS5051

Scheme 95

A - Control element test waiting: Select next step to continue

4 - Intake manifold change-over valve -N156

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. This valve is activated (clicks) for approx. 1 minute if the operation is not switched to the next control element by pressing the => button.

If the valve is not actuated (does not click).

1. Check intake manifold change-over valve -N156-. See «INTAKE MANIFOLD CHANGE-OVER, CHECKING»(/audi/a4/b6-2000-2006/remont/fuel-system/#multiport-fuel-injection-mfi-30l-avk__intake-manifold-change-over-checking) .

Actuating intake camshaft adjustment valve, Bank 1

1. Press => button.

Display on VAS5051

Scheme 96

A - Control element test waiting: Select next step to continue

5 - Bank 1, Valve -1- for camshaft adjustment -N205

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. This valve is activated (clicks) for approx. 1 minute if the operation is not switched to the next control element by pressing the => button.

If the valve is not actuated (does not click).

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(ref-197058-S33337724442005101100000) .

Activating Leak Detection Pump (LDP) tank ventilation system

1. Click ==> on button

Display on VAS5051

Scheme 97

A - Control element test waiting: Select next step to continue

6 - Leak Detection Pump (LDP) tank ventilation system

1. Click on => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. The Leak Detection Pump (LDP) -V144- is activated in intervals for approx. 1 minute (clicks), unless the => button is pressed first to switch to the next actuator.

Note. Operating noise of Leak Detection Pump (LDP) is softly audible at left rear wheelhouse.

If Leak Detection Pump (LDP) is not activated (no operating noise audible)

1. Check Leak Detection Pump (LDP): See «LEAK DETECTION PUMP (LDP) -V144-, CHECKING»(/audi/a4/b6-2000-2006/remont/fuel-system/#fuel-supply) .

Actuating intake camshaft adjustment valve, Bank 2

1. Press => button.

Display on VAS5051

Scheme 98

A - Control element test waiting: Select next step to continue

7 - Bank 2, Valve -2- for camshaft adjustment -N208

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. This valve is activated (clicks) for approx. 1 minute if the operation is not switched to the next control element by pressing the => button.

If the valve is not actuated (does not click).

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(ref-197058-S33337724442005101100000) .

Actuating exhaust camshaft adjustment valve, Bank 1

1. Press => button.

Display on VAS5051

Scheme 99

A - Control element test waiting: Select next step to continue

8 - Bank 1, camshaft adjustment (exhaust)

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. This valve is activated (clicks) for approx. 1 minute if the operation is not switched to the next control element by pressing the => button.

If the valve is not actuated (does not click).

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(ref-197058-S33337724442005101100000) .

Actuating exhaust camshaft adjustment valve, Bank 2

1. Press => button.

Display on VAS5051

Scheme 100

A - Control element test waiting: Select next step to continue

9 - Bank 2, camshaft adjustment (exhaust)

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. This valve is activated (clicks) for approx. 1 minute if the operation is not switched to the next control element by pressing the => button.

If the valve is not actuated (does not click).

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(ref-197058-S33337724442005101100000) .

Actuating brake vacuum pump

Only on vehicles with automatic transmission.

1. Press => button.

Display on VAS5051

Scheme 101

A - Control element test waiting: Select next step to continue

10 - Activation of brake vacuum pump

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. The brake servo vacuum pump, left front in engine compartment, must start up for a short time, unless the operation has been switched to the next control element by pressing the => button.

If the brake servo vacuum pump does not start up

1. Check brake servo vacuum pump: See «BRAKE SYSTEM VACUUM PUMP -V192-, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/mechanical-hydraulic/#brakes-hydraulic-components-electric-brake-system-vacuum-pump__brake-system-vacuum-pump-v192-removing) .

Actuating coolant fan control

1. Press => button.

Display on VAS5051

Scheme 102

A - Control element test waiting: Select next step to continue

11 - Coolant FC (Fan Control) activation 1

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. Coolant FC (Fan Control) Control Module -J293- (top right on fan frame -arrow-) slowly regulates coolant fan once up to maximum RPM, unless the => button is pressed first, to switch to the next actuator.

If the fan does not start

1. Check coolant fan and Coolant FC (Fan Control) Control Module -J293-.

Actuating relay for coolant run-on pump

only in vehicles with hot-country function

1. Press => button.

Display on VAS5051

Scheme 103

A - Control element test waiting: Select next step to continue

12 - Coolant Circulation Pump Relay -J151

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. The Coolant Circulation Pump Relay -J151- switches the pump for coolant run -on on and off at one minute intervals unless the => button is first pressed to switch to the next control element.

If the after-run coolant pump does not start

1. Check whether hot-country function is coded. See «LOGIN PROCEDURE OR CODING II»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__login-procedure-or-coding-ii) .

Scheme 104

Note. The injectors are actuated according to the ignition sequence: cyl. 1, cyl. 4, cyl. 3, cyl. 6, cyl. 2, cyl. 5.

1. Press => button.

A - Control element test waiting: Select next step to continue

13 - Cylinder 1 Fuel Injector -N30

1. Press => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. After pressing the => button the injector must click five times.

1. Use this procedure to check all injectors in sequence.

If one of the injectors is not actuated (does not click)

1. Test injectors. See «FUEL INJECTORS, CHECKING»(/audi/a4/b6-2000-2006/remont/fuel-system/#multiport-fuel-injection-mfi-30l-avk) .
2. After activating last injector (cylinder 5) press => button.

Display on VAS5051

Scheme 105

A - Control element test waiting: Select next step to continue

14 - Cylinder 4 Fuel Injector -N33

1. Click on => button again.

A - Control element test running: Continuation permitted

1. Fuel injector must click 5 times after => button is pressed.

1. Click on => button

Display on VAS5051

Scheme 106

A - Control element test waiting: Select next step to continue

15 - Cylinder 3 Fuel Injector -N32

1. Click on => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. Fuel injector must click 5 times after => button is pressed.

1. Click on => button

Display on VAS5051

Scheme 107

A - Control element test waiting: Select next step to continue

16 - Cylinder 6 Fuel Injector -N84

1. Click on => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. Fuel injector must click 5 times after => button is pressed.

1. Click on => button

Display on VAS5051

Scheme 108

A - Control element test waiting: Select next step to continue

17 - Cylinder 2 Fuel Injector -N31

1. Click on => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. Fuel injector must click 5 times after => button is pressed.

1. Click on => button

Display on VAS5051

Scheme 109

A - Control element test waiting: Select next step to continue

18 - Cylinder 5 Fuel Injector -N83

1. Click on => button again.

Display on VAS5051

A - Control element test running: Continuation permitted

1. Fuel injector must click 5 times after => button is pressed.

If one of the fuel injectors is not activated (does not click).

1. Check fuel injectors. See «FUEL INJECTORS, CHECKING»(/audi/a4/b6-2000-2006/remont/fuel-system/#multiport-fuel-injection-mfi-30l-avk) .
2. Click on => button

Display on VAS5051

Scheme 110

A - control element test is completed

1. Exit function "03 - Final control diagnosis" by pressing <= button.

Note. Before restarting the Output Diagnosis Test Mode (DTM) the engine must be started and the ignition switched off and on again.

With engine stopped and ignition switched on, the following operation can be carried out with the function "04 - Basic setting"

1. Adaptation of the throttle valve control module to the engine control module display group 060 (See «THROTTLE VALVE CONTROL MODULE -J338-, ADAPTATION»(/audi/a4/b6-2000-2006/remont/fuel-system/#multiport-fuel-injection-mfi-30l-avk__throttle-valve-control-module-j338-adaptation) .)
2. Vehicles with automatic transmission: Adaptation of kick down function of accelerator position sensor to engine control module Display group 063 (See «KICKDOWN FUNCTION, ADAPTING»(/audi/a4/b6-2000-2006/remont/fuel-system/#multiport-fuel-injection-mfi-30l-avk__kickdown-function-adapting) )

With the engine running, the following operations can be performed with the basic setting function

1. Generation of readiness code (mixture adaptation. See «READINESS CODE, GENERATING»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) )
2. Performance of mixture preparation system test (See «VACUUM SYSTEM, CHECKING FOR LEAKS»(/audi/a4/b6-2000-2006/remont/fuel-system/#multiport-fuel-injection-mfi-30l-avk) )

Test conditions for operations with engine running

1. No DTCs stored in DTC memory
2. Engine coolant temperature (ECT) at least 80 °C.
3. Electrical accessories switched off (coolant fan must not run during the test).
4. Air conditioning switched off.
5. Vehicles with automatic transmission: Selector lever in position P or N.

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Select vehicle system "01- Engine electronics" in selection. Ignition must be switched on.
2. Start engine.

Display on VAS5051

Scheme 111

1. Under -1- select diagnostic function "04 - Basic setting".

Display on VAS5051

Scheme 112

1 - Enter display group

1. Enter desired display group number (three figures) in zone -2- and confirm entry by pressing -Q- button.

Example

1. Enter "001" for "display group number 001" and confirm entry with -Q- button.

Display on VAS5051

Scheme 113

1. Measured values not in basic setting
2. Measured values in basic setting
3. Display group X

A - Activate basic setting

Note. Basic setting is initiated after pressing the -A- button.

Display on VAS5051

Scheme 114

1. Display zone 1
2. Display zone 2
3. Display zone 3
4. Display zone 4 Exit function "04 - Basic setting" by pressing <= button.

Control module, coding

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) and select vehicle system "01 - Engine electronics" in selection. Ignition must be switched on.

Display on VAS5051

Scheme 115

1. Under -1- select diagnostic function "07 - Code control module".

Display on VAS5051

Scheme 116

1 - Enter code word

1. Enter 7-digit control module code in zone -2- in accordance with coding table. See «CODING TABLE»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__coding-table) .

Key to code

CONTROL MODULE KEY CODE

CODING EXAMPLE

Coding table

CODING

1. Confirm entry with -Q- button.

Display on VAS5051

Scheme 117

1 - Coding is being performed

1. Wait until next display appears.

Display on VAS5051

Scheme 118

1. Coding performed in vehicle system
2. Control module identification with new code

(previous code in brackets)

1. Exit function "07 - Coding control module" by pressing <= button.
2. Switch ignition off and then switch on again after 15 seconds.

Note. The next time the ignition is switched on the newly entered code will be activated. If the ignition is not switched off and on after the correct code has been entered, it will not be possible to erase DTC "01044 Control module incorrectly coded"). In the case of non-hot country vehicles, the hot-country function (activation of the pump for coolant run-on) must be deactivated in function 11 - Login, or function 11 - Coding II. See HOT-COUNTRY FUNCTION, ACTIVATING/DEACTIVATING . After installation of the new control module, a DTC memory entry is made.

1. Engine coolant temperature at least 80 °C.
2. Electrical accessories switched off (coolant fan must not run during the test).
3. Air conditioning switched off.

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Select vehicle system "01 - Engine electronics" in selection. Ignition must be switched on.

or after each required process

1. Start engine.

Display on VAS5051

Scheme 119

1. Under -1- select diagnostic function "08 - Read measured value block".

Display on VAS5051

Scheme 120

1 - Enter display group: max. input value = 255

1. Enter desired display group number (three figures) in zone -2- and confirm entry by pressing -Q- button.

Note. The choice of display group depends on the particular functions and components to be tested.

Display on VAS5051

Scheme 121

1. Read Measured Value Block
2. Display zone 1 Display zone 2 Display zone 3 Display zone 4
3. Display group X Exit function "08 - Read measured value block" by pressing <= button.

Note. If no display follows, a display field is not assigned. To switch to a different display group, proceed as follows

1. Press <= button to end function "08 - Read measuring value block".

Adaptation

Note. The idling speed can be decreased or increased by using the "Adaptation" function, channel 01. Only perform the idling speed adaptation described in the following: in order to eliminate vibration noises or they are the cause of a customer complaint.

Scheme 122

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Select vehicle system "01 - Engine electronics" in selection. Engine must be running at idling speed. Display on VAS5051
2. Under -1- select diagnostic function "10 - Adaptation".

Display on VAS5051

Scheme 123

1. Enter channel number Enter "01" for "Adaptation channel 011" and confirm by pressing -Q- button.

Display on VAS5051

Scheme 124

1. 1 - Read out and test channel X
2. 2 - Display text of selected channel or No display
3. 5 - The scroll bar indicates the current adaptation value

Note. Adaptation value 128 is the factory-set idling speed, Adaptation can be performed by moving the scroll bar. See A - CHANGING ADAPTATION VALUE USING SCROLL BAR or by simply entering the new adaptation value. See B - ADAPTATION BY DIRECT ENTRY .

A - Changing adaptation value using scroll bar

Display on VAS5051

Scheme 125

1. Move scroll bar -5- in desired direction or click on area next to scroll bar, which will move it in desired direction.
2. Press "Save" button -4-.

ENGINE SPEED ADAPTION VALUES: USING SCROOL BAR

Display on VAS5051

Scheme 126

1. 1 - Save channel X
2. 2 - Display text of selected channel or No display
3. 4 - Original value X New value X

1. Confirm new adaptation value by pressing "Accept" button -3-.

Display on VAS5051

Scheme 127

1. Channel X Value X stored Exit function "10 - Adaptation" by pressing <= button. NOTE: An engine speed decrease follows immediately, an increase in engine speed is only effective after briefly pressing the accelerator pedal.

B - Adaptation by direct entry

Display on VAS5051

Scheme 128

1. Press "Keypad" button -3-.

Display on VAS5051

Scheme 129

1. Enter adaptation value

1. Enter desired 5-digit adaptation value in zone -2- and confirm entry by pressing -Q- button.

ENGINE SPEED ADAPTION VALUES: DIRECT ENTRY

Display on VAS5051

Scheme 130

1. 1 - Save channel X
2. 2 - Display text of selected channel or No display
3. 4 - original value X new value X

1. Confirm new adaptation value by pressing "Accept" button -3-.

Display on VAS5051

Scheme 131

1. Channel X Value X saved

1. Exit function "10 - Adaptation" by pressing <= button.

Note. Immediately following an engine speed decrease, an increase in engine speed is only effective after briefly pressing the accelerator pedal.

Login procedure or coding II

With engine stopped and ignition switched on, the following operations can be carried out with the function "11 - Login, or function 11 - Coding II

1. Activation and deactivation of the cruise control system (CCS). See «CRUISE CONTROL SYSTEM, ACTIVATING/DEACTIVATING»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__cruise-control-system-activatingdeactivating) .
2. Activation and deactivation of the hot-country function (coolant run-on pump for hot countries). See «HOT-COUNTRY FUNCTION, ACTIVATING/DEACTIVATING»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk__hot-country-function-activatingdeactivating) .

Cruise control system, activating/deactivating

Note. Vehicles equipped with CCS, the CCS function must be activated after replacement of the engine control module. If the CCS function is activated in the engine control module of a vehicle without CCS, a DTC memory entry is made. If this is the case, the CCS function must be deactivated.

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Select vehicle system "01 - Engine electronics" in selection. Ignition must be switched on.

Display on VAS5051

Scheme 132

1. Under -1- select diagnostic function "11 - Coding II".

All models

Display on VAS5051

Scheme 133

1. Enter code word

Activate CCS

1. Enter "11463" in zone -2- and confirm entry by pressing -Q- button.

Deactivate CCS

1. Enter "16167" in zone -2- and confirm the entry by pressing -Q- button.
2. Exit function "11 - Login, or function 11 - Coding II" by pressing <= button.

Display on VAS5051

Scheme 134

1. Under -1- select diagnostic function "08 - Read measured value block".

Display on VAS5051

Scheme 135

1. Enter display group

1. Enter "066" for "display group number 066" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 136

1. Check indication in display field -2-.

DISPLAY GROUP 066: SIGNALS TO ENGINE CONTROL MODULE

1. Exit function "08 - Read measured value block" by pressing <= button.
2. Press "06 - End output".
3. Switch ignition off.

Hot-country function, activating/deactivating

Note. Vehicles for hot countries are equipped with a coolant run-on pump which is actuated by the engine control module. In the case of non-hot country vehicles, the hot-country function must be deactivated after installation of a new control module, as otherwise a fault memory entry is made.

Scheme 137

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Select vehicle system "01 - Engine electronics" in selection. Ignition must be switched on. Display on VAS5051
2. Under -1- select diagnostic function "11 - Coding II".

Display on VAS5051

Scheme 138

1 - Enter code word

Deactivating hot-country function

1. Enter "50000" for "deactivate hot-country function" in zone -2- and confirm by pressing -Q- button.

Scheme 139

1. Enter "60000" for "activate hot-country function" in zone -2- and confirm by pressing -Q- button.
2. Exit function "11 - Login, or function 11 - Coding II" by pressing <= button. Display on VAS5051
3. Under -1- select diagnostic function "08 - Read measured value block".

Display on VAS5051

Scheme 140

1 - Enter display group

Scheme 141

1. Press buttons -1-, -3-, and -2- for "display group number 132" in zone -2- and confirm entry by pressing -Q- button. Display on VAS5051
2. Check indication in display field -4-.

DISPLAY GROUP 132: COOLING

1. Exit function "08 - Read measured value block" by pressing <= button.
2. Press "06 - End output".
3. Switch ignition off.

Readiness code

The readiness code appears as an 8-digit display on measured value block 086, display zone 1. Each of the 8 digits is allocated to a particular emission-related system.

The function of each of these systems is checked by the On Board Diagnostic (OBD) and the relevant position for the system in the 8-digit display is changed from "1" to "0" in a test sequence which must be fully completed.

The readiness code produced after successful completion of the test sequence is then "0 0 0 0 0 0 0 0" (measured value block 086, display zone 1).

If an individual test has been completed, but is "not OK", a DTC is entered in the DTC memory. Checking Diagnostic Trouble Code (DTC) memory. See Diagnostic Trouble Code (DTC) memory, checking .

The readiness code is set to "1 1 1 0 0 1 0 1" if

1. The DTC memory has been erased.
2. The voltage supply to the engine control module has been interrupted (e.g. the connector detached, battery disconnected).
3. A new engine control module has been installed.

In this case the readiness code must be reproduced. See READINESS CODE, GENERATING .

Note. When driving with varying loads the exhaust tests are initiated by the control module and the readiness code generates itself. In this case the concluding control is possibly omitted, i.e. it is not obvious whether the vehicle was handed over to the customer without any malfunctions.

Scheme 142

Scheme 143

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Select vehicle system "01 - Engine electronics" in selection. Engine must be running at idling speed. Display on VAS5051
2. Under -1- select diagnostic function "08 - Read measured value block". Display on VAS5051: 1 - Enter display group
3. Enter "086" for "display group number 086" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 144

1. Check indication in display field -1-. Specified value: 0 0 0 0 0 0 0 0

DISPLAY GROUP 086: READINESS CODE

Note on display zone 1

Display zone 1 is the most important. This display indicates which system has been checked by the On Board Diagnostic (OBD) since the last time the DTC memory was erased or since installation of a new control module. After erasing the DTC memory, all testable values are set to "1" and then to "0" after successful completion of the test.

Note. The readiness code is only produced when all display digits in display zone 1 are set to "0".

If the specification "0 0 0 0 0 0 0 0" is achieved in display zone 1

1. Press <= button. If specified value is not obtained
2. Generate readiness code. See «READINESS CODE, GENERATING»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) .

1. Vehicle stationary.
2. Vehicles with automatic transmission: Selector lever in position P or N.
3. Electrical accessories switched off (coolant fan must not run during the test).
4. Air conditioning switched off.
5. Engine coolant temperature (ECT) at least 80 °C (display group 004, display zone 3). IMPORTANT: Warm up engine by means of a road test.
6. Engine control module version checked. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Operation 9, see «OPERATION 9: DIAGNOSIS OF TANK SEAL AND OXYGEN SENSOR INTERCHANGE RECOGNITION BEHIND CATALYTIC CONVERTER»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Requires different procedures depending on ECM Part No./software version number.

Note. If the test result is immediately displayed as "OK" after selecting a display group during an operation, the test has already been performed and you can continue with the next operation.

Test conditions

1. Engine stopped, ignition switched on

Scheme 145

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECT FUNCTIONS»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . Select vehicle system "01 - Engine electronics" in selection. Ignition must be switched on. Display on VAS5051
2. Under -1- select diagnostic function "02 - Check DTC memory".

Display on VAS5051

Scheme 146

1. Contents of fault memory: Faults recognized or X Faults recognized
2. Fault Fault code Fault location Fault type

If a fault is stored

1. Repair malfunction and erase DTC memory. Perform a road test and check DTC memory again.
2. Press <= button.
3. Perform next operation.

1. Engine stopped, ignition switched on

Display on VAS5051

Scheme 147

1. Under -1- select diagnostic function "05 - Erase DTC memory". NOTE: The readiness code is reset when the DTC memory is erased and must be reproduced.

Display on VAS5051

Scheme 148

1. No display (before erasing) or DTC memory erased
2. Note: Should the function be carried out? NOTE: Data will be erased! Press "OK" button in display -2-. Press <= button. Perform next operation.

1. Engine stopped, ignition switched on

Display on VAS5051

Scheme 149

Scheme 150

1. Under -1- select diagnostic function "04 - Basic setting". Display on VAS5051: 1 - Enter display group
2. Enter "060" for "display group number 060" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 151

1. Activate basic setting by pressing -A- button.
2. Check indication in display fields -3- and -4-.

DISPLAY GROUP 060: ADAPTATION OF THROTTLE VALVE CONTROL MODULE

Note on display zone 3

During adaptation, various digits are displayed in display zone 3 which represent the relevant adaptation status. The most crucial factor is not the way in which the adaptation stage counter (display zone 3) behaves during the adaptation process, but that the specification "ADP OK" is displayed after adaptation in display zone 4.

If specification "ADP OK" is obtained

1. Press <= button.
2. Perform next operation.

Operation 4: Adapting kick down function

Only on vehicles with automatic transmission.

1. Engine stopped, ignition switched on

Display on VAS5051

Scheme 152

1 - Enter display group

Scheme 153

1. Enter "063" for "display group number 063" in zone -2- and confirm entry by pressing -Q- button. Display on VAS5051
2. Activate basic setting by pressing -A- button. NOTE: You will now be instructed to: "Operate kick down".
3. Fully depress accelerator pedal beyond kickdown point and keep it pressed. NOTE: During the kickdown point adaptation process, "Kickdown ADP running" is shown on the display. After successful adaptation of the kickdown point "Kickdown ADP OK" appears on the display.
4. Check indication in display field -4-.

DISPLAY GROUP 063: ADAPTING KICKDOWN FUNCTION

Note on display zone 4

If "ERROR" can be displayed, if e.g. accelerator pedal is not pressed when instructed by tester, or if accelerator pedal was released while adaptation was already running but process was not yet complete. In both cases it is necessary to exit the "Basic setting" mode and restart the adaptation process.

If specification "ADP OK" is obtained

1. Press <= button.
2. Perform next operation.

Operation 5: Checking operating status of oxygen sensor control

1. Start engine (for vehicles with manual transmission: press clutch pedal). NOTE: If necessary, after the engine starts reselect vehicle system "01 - Engine electronics" and diagnostic function "04 - Basic setting".

1. Engine running at idling speed

Display on VAS5051

Scheme 154

1 - Enter display group

max. input value = 255

1. Enter "030" for "display group number 030" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 155

1. Activate basic setting by pressing -A- button.
2. Check indication in display fields -1- to -4-.

Note. By increasing the engine speed the specified values are achieved more quickly. The "oxygen sensor status" indicates the condition of the oxygen sensor control and the oxygen sensors.

DISPLAY GROUP 030: OXYGEN SENSOR STATUS

SIGNIFICANCE OF LAST 3 DIGITS IN READOUT OF DISPLAY GROUP 030

Note. The first digit of the relevant 3-digit display (heating) fluctuates between 0 and 1. The oxygen sensor control for oxygen sensor behind catalytic converter (Bank 1, Sensor 2 and Bank 2, Sensor 2) is not active without engine load, i.e. the last digit of the 3-digit display is 0.

1. Continue test when displays have achieved "111" in display zones 1 and 3 and "110" in display zones 2 and 4.
2. Press <= button.
3. Perform next operation.

Operation 6: Diagnosis of oxygen sensor aging before catalytic converter

Display on VAS5051

Scheme 156

1 - Enter display group

max. input value = 255

1. Enter "197" for "display group 197" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 157

1. Activate basic setting by pressing -A- button.
2. Press accelerator and brake pedal simultaneously. Engine speed increases to approx. 2200 rpm.

1. Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2200 rpm.

1. Check specification in display zone -4-.

1. Check indication in display fields -2- and -4-. DISPLAY GROUP 197: DIAGNOSTIC OF OXYGEN SENSOR AGING (BANK 1, SENSOR 1 - BANK 2, SENSOR 1) Display zones 1 2 3 4 Display group 197: Diagnostic of oxygen sensor aging (Bank 1, Sensor 1 - Bank 2, Sensor 1) Display x.x - x.x - Display Dynamic factor Bank 1, Sensor 1 Diagnosis status Dynamic factor Bank 2, Sensor 1 Diagnosis status Range Test OFF Test ON B1-S1 OK B1-S1 NOK Test OFF Test ON B2-S1 OK B2-S1 NOK Specif. value B1-S1 OK B2-S1 OK Note If "B1-S1 NOK" is displayed: Check DTC memory. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . If "B2-S1 NOK" is displayed: Check DTC memory. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . If specified values "B1-S1 OK" and "B2-S1 OK" are obtained
2. Press <= button.

Operation 7: Diagnosis of oxygen sensor operational readiness behind catalytic converter

Display on VAS5051

Scheme 158

1 - Enter display group

Scheme 159

1. Enter "193" for "display group number 193" in zone -2- and confirm entry by pressing -Q- button. Display on VAS5051
2. Activate basic setting by pressing -A- button.
3. Press accelerator and brake pedal simultaneously. Engine speed increases to approx. 2200 rpm.

1. Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2200 rpm.

1. Check indication in display fields -2- and -4-.

DISPLAY GROUP 193: OPERATIONAL READINESS OF OXYGEN SENSORS (BANK 1, SENSOR 2 AND BANK 2, SENSOR 2)

If specification "B1-S2 OK" and "B2-S2 OK" are obtained

1. Press <= button.
2. Perform next operation.

Test requirement

1. Engine running at idle.

Display on VAS5051

Scheme 160

1 - Enter display group

Scheme 161

1. Enter "195" for "display group number 195" in zone -2- and confirm entry by pressing -Q- button. Display on VAS5051
2. Activate basic setting by pressing -A- button.
3. Check indication in display field -4-.

DISPLAY GROUP 195: DIAGNOSIS OF TANK VENTILATION VALVE

If specification "Syst. OK" is obtained

1. Press <= button.

For ECM up to Part No. 8E0 909 559D, software version D0003

1. Engine running at idling speed For ECM Part No. 8E0 909 559D, from software version D0004 and ECM 8E0 909 559E, from software version D0001
2. Accelerator and brake pedals fully pressed simultaneously and held in this position until a test result is displayed

Display on VAS5051

Scheme 162

1 - Enter display group

Scheme 163

1. Enter "196" for "display group number 196" in zone -2- and confirm entry by pressing -Q- button. Display on VAS5051
2. Activate basic setting by pressing -A- button.
3. Check indication in display fields -1- and -4-.

Note. Tank leak diagnostic lasts longer than the oxygen sensor interchange recognition. In case diagnostic leak test is not started, open fuel filler cap briefly (to release pressure).

DISPLAY GROUP 196: TANK LEAK DIAGNOSIS AND OXYGEN SENSOR INTERCHANGE RECOGNITION (BANK 1, SENSOR 2 - BANK 2, SENSOR 2)

If the specified value "Syst. OK" is obtained

1. Press <= button.
2. Perform next operation.

Operation 10: Diagnosis of oxygen sensor aging behind catalytic converter

Display on VAS5051

Scheme 164

1 - Enter display group

Scheme 165

1. Enter "194" for "display group number 194" in zone -2- and confirm entry by pressing -Q- button. Display on VAS5051
2. Activate basic setting by pressing -A- button.
3. Press accelerator and brake pedal simultaneously, engine speed increases to approx. 2200 rpm.

1. Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2200 rpm.

1. Check indication in display fields -3- and -4-.

DISPLAY GROUP 194: DIAGNOSIS OF OXYGEN SENSOR AGING (BANK 1, SENSOR 2 - BANK 2, SENSOR 2)

If the specified values "B1-S2 OK" and "B2-S2 OK" is obtained

1. Press <= button.

1. Engine running at idling speed

Display on VAS5051

Scheme 166

1 - Enter display group

Scheme 167

1. Enter "198" for "display group number 198" in zone -2- and confirm entry by pressing -Q- button. Display on VAS5051
2. Activate basic setting by pressing -A- button.
3. Press accelerator and brake pedal simultaneously. Engine speed increases to approx. 2200 rpm.

1. Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2200 rpm.

1. Check indication in display fields -2- and -4-. DISPLAY GROUP 198: DIAGNOSIS OF CATALYTIC CONVERTER (BANK 1 AND BANK 2) Display zones 1 2 3 4 Display group 198: Diagnosis of catalytic converter (Bank 1 and Bank 2) Display x.xx - x.xx - Display Measured value catalytic converter - conversion, Bank 1 Diagnosis status Measured value catalytic converter - conversion, Bank 2 Diagnosis status Range Test OFF Test ON Cat. B1 OK Cat. B1 NOK Test OFF Test ON Cat. B2 OK Cat. B2 NOK Specif. value 0...0.35 Cat. B1 OK 0...0.35 Cat. B2 OK Note: If "Cat. B1 NOK" is displayed: Check DTC memory. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . If no DTC is stored, replace catalytic converter . If "Cat. B2 NOK" is displayed: Check DTC memory. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) . If no DTC is stored, replace catalytic converter .

If specified value "Cat. B1 OK" is obtained

1. Press <= button.
2. Depress accelerator pedal completely (swiftly) and then release it (brief acceleration to at least 4000 RPM). WARNING: Test procedure cannot continue successfully without this brief acceleration!
3. Perform next operation.

1. Engine running at idling speed

Display on VAS5051

Scheme 168

1 - Enter display group

Scheme 169

1. Enter "199" for "display group number 199" in zone -2- and confirm entry by pressing -Q- button.
2. Depress gas pedal completely (swiftly) two times and then release it (brief acceleration of at least 4000 RPM). Display on VAS5051
3. Activate basic setting by pressing -A- button. NOTE: During the diagnosis of the secondary air system the secondary air pump runs several seconds.
4. Check indication in display field -4-.

DISPLAY GROUP 199: DIAGNOSIS OF SECONDARY AIR INJECTION SYSTEM (BANK 1 AND BANK 2)

If specification "Syst. OK" is obtained

1. Press <= button.
2. Perform next operation.

Operation 13: Reading readiness code

1. Read readiness code. See «READING READINESS CODE»(/audi/a4/b6-2000-2006/remont/testing-diagnostics/#engine-controls-on-board-diagnostic-obd-30l-avk) .

See also:
• DATA EXCHANGE BETWEEN ENGINE CONTROL MODULE AND OTHER CAN-CONTROL MODULES, CHECKING
• ELECTRONIC ENGINE POWER CONTROL (EPC) (ELECTRONIC THROTTLE), CHECKING
• MASS AIR FLOW (MAF) SENSOR -G70-, CHECKING
• INTAKE AIR TEMPERATURE (IAT) SENSOR -G42-, CHECKING
• COOLANT THERMOSTAT, REMOVING, INSTALLING AND CHECKING
• THROTTLE VALVE CONTROL MODULE -J338-, CHECKING
• OXYGEN SENSORS AND OXYGEN SENSOR CONTROL BEHIND CATALYTIC CONVERTER, CHECKING
• FUEL PRESSURE REGULATOR AND HOLDING PRESSURE (VEHICLES UP TO 06.03), CHECKING
• ANGLE SENSOR FOR THROTTLE VALVE ACTUATOR, CHECKING
• FUEL PUMP (FP) RELAY -J17- AND ACTIVATION, CHECKING
• KNOCK CONTROL STOP, CHECKING
• SECONDARY AIR SYSTEM
• SECONDARY AIR INJECTION (AIR) SOLENOID VALVE -N112-, CHECKING
• EVAPORATIVE EMISSIONS (EVAP) SYSTEM DIAGNOSTIC LEAK TEST
• THROTTLE VALVE CONTROL MODULE -J338-, ADAPTATION
• ENGINE CONTROL MODULE (ECM) (WITHOUT METAL ANTI-THEFT HOUSING), REPLACING
• INTAKE MANIFOLD CHANGE-OVER, CHECKING
• CHECKING OXYGEN SENSOR LEARNED VALUES AND OXYGEN SENSOR CONTROL
• CHECK PHASE POSITION OF CMP SENSOR
• ELECTRIC BRAKE SYSTEM VACUUM PUMP
• CHECKING ACTIVATION OF FUEL PUMP RELAY
• BRAKE SYSTEM VACUUM PUMP -V192-, REMOVING AND INSTALLING
• KICKDOWN FUNCTION, ADAPTING
• DIAGNOSTIC TROUBLE CODE (DTC) MEMORY
• DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, ERASING
• EXHAUST MALFUNCTION INDICATOR LAMP (MIL) IN INSTRUMENT CLUSTER
• DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING
• SAFETY PRECAUTIONS
• CONTROL MODULE, CODING
• OUTPUT DIAGNOSTIC TEST MODE (DTM)
• ENDING OUTPUT
• ADAPTATION
• LOGIN PROCEDURE OR CODING II
• DIAGNOSTIC TROUBLE CODE (DTC) TABLE
• READINESS CODE
• CRUISE CONTROL SYSTEM, ACTIVATING/DEACTIVATING
• HOT-COUNTRY FUNCTION, ACTIVATING/DEACTIVATING
• CODING TABLE
• A - CHANGING ADAPTATION VALUE USING SCROLL BAR
• B - ADAPTATION BY DIRECT ENTRY