On Board Diagnostic (OBD) - 3.0l v6 Avk Audi A6 C5 рестайлинг

Equipment

1. Data is transmitted between the control module and the VAS5051 tester via operating mode "On Board Diagnostic (OBD)".
2. Diagnostic Trouble Code (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, CHECKING AND ERASING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) .
4. DTC memory must be erased after malfunction is repaired. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, ERASING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__diagnostic-trouble-code-dtc-memory-erasing) .

Note. Readiness code must be regenerated every time DTC memory is erased. See READINESS CODE, GENERATING .

1. If the ECM recognizes malfunctions that lead to a worsening of emissions values, it indicates them by lighting the Malfunction Indicator Lamp (MIL) -K83- in the instrument cluster. Meaning of exhaust Malfunction Indicator Lamp (MIL) -K83-. See «EXHAUST MALFUNCTION INDICATOR LAMP (MIL) IN INSTRUMENT CLUSTER»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__exhaust-malfunction-indicator-lamp-mil-in) .
2. EPC-relevant malfunctions are also indicated by the warning lamp for Electronic Power Control ("EPC warning lamp") in the instrument cluster.

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 AND ERASING .

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 the engine is started again and the 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 DTC memory that relate to the EPC system.

Note. The switch-on signal for Malfunction Indicator Lamp (MIL) is transfered from the Engine Control Module (ECM) to the instrument cluster via CAN -bus. Check data exchange between 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.

1. Battery voltage at least 12.7 V
2. Ground connections on engine and transmission OK.

Scheme 189

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

See operating instructions of vehicle diagnostic, testing and information system VAS5051.

Display on VAS5051

Scheme 190

1. Press "vehicle self-diagnosis" button.

Display on VAS5051

Scheme 191

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 192

Depending on which function is required, see DIAGNOSTIC FUNCTION SELECTION table.

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 193

1. Control module identification of engine control module. See «CONTROL MODULE IDENTIFICATION ENGINE CONTROL MODULE (EXAMPLE)»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) table.
2. Control module identification of immobilizer. See «CONTROL MODULE IDENTIFICATION, IMMOBILIZER (EXAMPLE)»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) table.

CONTROL MODULE IDENTIFICATION ENGINE CONTROL MODULE (EXAMPLE)

CONTROL MODULE IDENTIFICATION, IMMOBILIZER (EXAMPLE)

1. Press --> button.

Display on VAS5051

Scheme 194

1. Selection of diagnostic functions

DIAGNOSTIC FUNCTION SELECTION

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 SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 - Engine electronics". 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 195

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

Display on VAS5051

Scheme 196

1. Contents of DTC memory Malfunctions recognized or X Malfunctions 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 --> button.

Display on VAS5051

Scheme 197

1. Repair DTC(s) as specified in «DIAGNOSTIC TROUBLE CODE (DTC) TABLE»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__diagnostic-trouble-code-dtc-table) .
2. Reselect diagnostic function "02 - Check DTC memory" and erase DTC memory. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, ERASING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__diagnostic-trouble-code-dtc-memory-erasing) .
3. Select diagnostic function "06 - End output" in selection. See «ENDING OUTPUt»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__ending-output) .

B - If no malfunction was recognized

1. Select diagnostic function "06 - End output". See «ENDING OUTPUT»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__ending-output) .

Diagnostic Trouble Code (DTC) memory, erasing

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

Requirements

1. DTC memory checked. See «DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) .
2. All malfunctions repaired.

After DTC memory has been successfully checked

Display on VAS5051

Scheme 198

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

Display on VAS5051

Scheme 199

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.
2. Note: Should the function be carried out? NOTE: Data will be erased! Press "OK" button in display -2-. Exit function "05 - Erase DTC memory" by pressing --> button. 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 disconnected.

Ending output

Display on VAS5051

Scheme 200

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

Display on VAS5051

Scheme 201

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), 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 the 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 ( Diagnostic Trouble Code (DTC) memory, checking and ERASING ), the readiness code must be regenerated. See READINESS CODE, GENERATING .

DTCs P0010 to P1130, VAG 16394 to 17538

DTCS P0010 TO 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 AND OIL PRESSURE SWITCH, 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).

DTCS P0021 TO 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 AND OIL PRESSURE SWITCH, 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).

DTCS P0036 TO P0058

DTCS P0101 TO P0118

DTCS P0121 TO P0135

DTCS P0136 TO P0141

DTCS P0150 TO P0155

DTCS P0156 TO P0161

DTCS P0170 TO P0172

DTCS P0173 TO P0196

DTCS P0210 TO P0219

DTCS P0221 TO P0265

DTCS P0267 TO P0277

DTCS P0300 TO P0306

DTCS P0321 TO P0333

DTCS P0340 TO P0348

DTCS P0351 TO P0356

DTCS P0365 TO P0393

DTCS P0411 TO P0441

DTCS P0442 TO P0507

DTCS P0513 TO P0600

DTCS P0601 TO P0606

DTCS P0638 TO P0688

DTCS P0704 TO P1060

DTCS P1102 TO P1112

DTCS P1113 TO P1120

DTCS P1121 TO 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

DTCS P1136 TO P1140

Note. add. = additive means that malfunction only has effect during idling

DTCS P1141 TO P1150

DTCS P1171 TO P1215

DTCS P1216 TO P1230

DTCS P1237 TO 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.

DTCS P1296 TO P1330

DTCS P1335 TO P1347

DTCS P1355 TO P1363

DTCS P1364 TO P1372

DTCS P1386 TO P1414

DTCS P1421 TO P1424

DTCS P1427 TO P1435

Note. DTCs P1427, P1428, and P1429 can only occur on vehicles with automatic transmission.

DTCS P1471 TO P1476

DTCS P1479 TO P1517

Note. DTC P1479 can only occur on vehicles with automatic transmission.

DTCS P1519 TO P1539

DTCS P1542 TO P1568

DTCS P1569 TO P1609

DTCS P1610 TO P1628

DTCS P1630 TO P1640

DTCS P1648 TO P1672

DTCS P1682 TO P1914

Note. DTCs P1912, P1913, and P1914 can only occur on vehicles with automatic transmission.

DTCS P1915 TO P1931

DTCS P1996 TO 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). Camshaft adjustment codes: E1 = intake camshaft, bank 1; A1= exhaust camshaft, bank 1; E2 = intake camshaft, bank 2; A2 = exhaust camshaft, bank 2.

DTCS P2101 TO P2181

DTCS P3017 TO P3262

DTCS P3300 TO P3305

Output Diagnostic Test Mode (DTM)

Note. The output DTM 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 DTM the engine must be started and the ignition switched off and on again.

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

ACTIVATION SEQUENCE - 1 OF 2, VEHICLES WITH CONTROL MODULE NO. 8E0 909 ... )

ACTIVATION SEQUENCE - 2 OF 2, VEHICLES WITH CONTROL MODULE NO. 8E0 909 ... )

1. Fuses for engine electronics OK

Test sequence

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

Display on VAS5051

Scheme 202

1. Under -1- select diagnostic function "03 - Output Diagnostic Test Mode".

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

Display on VAS5051

Scheme 203

1. Control element test waiting: Select next step to continue

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

1. Press --> button.

Display on VAS5051

1. Control element test running: Continuation permitted

1. This valve is activated (clicks) at approx. 1 minute intervals 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 FUEL PUMP (FP) RELAY -J17- AND ACTIVATION, CHECKING .

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

1. Check solenoid valve 1 for Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. See «FUEL TANK BREATHER, CHECKING»(/audi/a6/c5-2001-2004/remont/cruise-control-systems/#multiport-fuel-injection-mfi-30l-v6-avk) .

Activating secondary air inlet valve

1. Press --> button.

Display on VAS5051

Scheme 204

1. Control element test waiting: Select next step to continue

1. 2 - Secondary air inlet valve -N112

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

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

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

1. Check secondary air injection (AIR) solenoid valve -N112 -: Repair Manual, 3.0 Liter V6 5V Engine Mechanical, Engine Code(s): AVK, Repair Group 26

Activating secondary air injection (AIR) pump relay

1. Press --> button.

Display on VAS5051

Scheme 205

1. Control element test waiting: Select next step to continue

Scheme 206

1. 3 - Secondary Air Injection (AIR) Pump Relay -J299

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

1. The Secondary Air Injection (AIR) Pump Relay -J299- (in relay carrier in electronics box, plenum chamber, position 2) switches 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.

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/a6/c5-2001-2004/remont/exhaust/#exhaust-system-emission-controls-30l-v6-avk) .

Activation of intake manifold change-over valve

1. Press --> button.

Display on VAS5051

Scheme 207

1. Control element test waiting: Select next step to continue

1. 4 - Intake manifold change -over valve -N156

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

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

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

1. Check intake manifold change-over valve -N156-. See «INTAKE MANIFOLD CHANGE-OVER»(/audi/a6/c5-2001-2004/remont/cruise-control-systems/#multiport-fuel-injection-mfi-30l-v6-avk__intake-manifold-change-over) .

Activating intake camshaft adjustment valve, Bank 1

1. Press --> button.

Display on VAS5051

Scheme 208

1. Control element test waiting: Select next step to continue

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

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

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

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

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(/audi/a6/c5-2001-2004/remont/mechanical/#30l-v6-engine-code-avk__camshaft-adjustment-checking) .

Activating Leak Detection Pump (LDP) tank ventilation system

1. Click on --> button.

Display on VAS5051

Scheme 209

1. Control element test waiting: Select next step to continue

1. 6 - Leak Detection Pump (LDP) tank ventilation system

1. Click on --> - button again.

Display on VAS5051

1. Control element test running: Continuation permitted

1. The Leak detection pump (LDP) -V144- is activated in intervals for approx. 1 minute (clicks), unless --> 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/a6/c5-2001-2004/remont/fuel-system/#fuel-supply-system-all-engines) .

Activating exhaust flap valve

1. Press --> button.

Display on VAS5051

Scheme 210

1. Control element test waiting: Select next step to continue

1. 7 - Exhaust Flap Valve 1 -N321

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

1. This valve (in left storage compartment in luggage compartment) is activated in intervals for approx. 1 minute (clicks), unless --> button is pressed first to switch to the next actuator.

1. Check exahust flap. See «EXHAUST FLAP, CHECKING»(/audi/a6/c5-2001-2004/remont/exhaust/#exhaust-system-emission-controls-30l-v6-avk) .

Activating intake camshaft adjustment valve, Bank 2

1. Press --> button.

Display on VAS5051

Scheme 211

1. Control element test waiting: Select next step to continue

1. 8 - Bank 2, Valve -2- for camshaft adjustment -N208

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

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

If the valve is not activated (does not click)

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(/audi/a6/c5-2001-2004/remont/mechanical/#30l-v6-engine-code-avk__camshaft-adjustment-checking) .

Activating exhaust camshaft adjustment valve, Bank 1

1. Press --> button.

Display on VAS5051

Scheme 212

1. Control element test waiting: Select next step to continue

1. 9 - Bank 1, camshaft adjustment (exhaust)

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

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

If the valve is not activated (does not click)

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(/audi/a6/c5-2001-2004/remont/mechanical/#30l-v6-engine-code-avk__camshaft-adjustment-checking) .

Activating exhaust camshaft adjustment valve, Bank 2

1. Press --> button.

Display on VAS5051

Scheme 213

1. Control element test waiting: Select next step to continue

1. 10 - Bank 2, camshaft adjustment (exhaust)

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

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

If the valve is not activated (does not click)

1. Check camshaft adjustment valves: See «CAMSHAFT ADJUSTMENT, CHECKING»(/audi/a6/c5-2001-2004/remont/mechanical/#30l-v6-engine-code-avk__camshaft-adjustment-checking) .

Activating brake vacuum pump

Brake vacuum pump is only on vehicles with automatic transmission.

1. Press --> button.

Display on VAS5051

Scheme 214

1. Control element test waiting: Select next step to continue

1. 11 - Activation of brake vacuum pump

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

1. The brake booster 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 booster vacuum pump does not start up

1. Check brake booster vacuum pump: See «ELECTRIC VACUUM PUMP»(/audi/a6/c5-2001-2004/remont/mechanical-hydraulic/#brake-system__electric-vacuum-pump) .

Activating coolant fan control

1. Press --> button.

Display on VAS5051

Scheme 215

1. Control element test waiting: Select next step to continue

1. 12 - Coolant FC (Fan Control) activation 1

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

1. Coolant FC (Fan Control) Control Module -J293- (engine compartment in front) slowly regulates coolant fan once up to maximum RPM, unless --> - 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-.

Activating relay for coolant run-on pump

Note. Coolant run-on pump is ONLY in vehicles with hot-country function. See HOT-COUNTRY FUNCTION, ACTIVATING / DEACTIVATING .

1. Press --> button.

Display on VAS5051

Scheme 216

1. Control element test waiting: Select next step to continue

1. 13 - Coolant Circulation Pump Relay -J151

1. Press --> button again.

Display on VAS5051

1. 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/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__login-procedure-or-coding-ii) .

Activating injectors

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

1. Press --> button.

Display on VAS5051

Scheme 217

1. Control element test waiting: Select next step to continue

1. 14 - Cylinder 1 Fuel Injector -N30

1. Press --> button again.

Display on VAS5051

1. Control element test running: Continuation permitted

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

1. Press --> button.

Display on VAS5051

Scheme 218

1. Control element test waiting: Select next step to continue

1. 15 - Cylinder 4 Fuel Injector -N33

1. Click on --> - button again.

Display on VAS5051

1. 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 219

1. Control element test waiting: Select next step to continue

1. 16 - Cylinder 3 Fuel Injector -N32

1. Click on --> - button again.

Display on VAS5051

1. 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 220

1. Control element test waiting: Select next step to continue

1. 17 - Cylinder 6 Fuel Injector -N84

1. Click on --> - button again.

Display on VAS5051

1. 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 221

1. Control element test waiting: Select next step to continue

1. 18 - Cylinder 2 Fuel Injector -N31

1. Click on --> - button again.

Display on VAS5051

1. 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 222

1. Control element test waiting: Select next step to continue

1. 19 - Cylinder 5 Fuel Injector -N83

1. Click on --> - button again.

Display on VAS5051

1. 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 «INJECTORS, CHECKING»(/audi/a6/c5-2001-2004/remont/cruise-control-systems/#multiport-fuel-injection-mfi-30l-v6-avk) .
2. Click on --> - button

Scheme 223

Display on VAS5051

1. control element test is completed

1. Exit function "03 - Output Diagnostic Test Mode" by pressing --> button.

Note. Before restarting the output DTM the engine must be started and the ignition switched off and on again.

Basic setting

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

1. Adapt throttle valve control module to the engine control module display group 060. See «THROTTLE VALVE CONTROL MODULE, ADAPTATION»(/audi/a6/c5-2001-2004/remont/cruise-control-systems/#multiport-fuel-injection-mfi-30l-v6-avk__throttle-valve-control-module-adaptation) .
2. Vehicles with automatic transmission: Adaptation of kick down function of accelerator position sensor to engine control module. Display group 063 ( «KICKDOWN FUNCTION, ADAPTATION»(/audi/a6/c5-2001-2004/remont/cruise-control-systems/#multiport-fuel-injection-mfi-30l-v6-avk__kickdown-function-adaptation) )

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/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) )
2. Performance of mixture preparation system test, see «VACUUM SYSTEM, CHECKING FOR LEAKS»(/audi/a6/c5-2001-2004/remont/cruise-control-systems/#multiport-fuel-injection-mfi-30l-v6-avk) .

Test conditions for operations with engine running

1. No DTCs stored in DTC memory
2. Coolant temperature 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.

Vehicles with control module No. 8E0 909... , go to TEST SEQUENCE .

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 - Engine electronics". For this purpose, ignition must be switched on.

or after each required process

1. Start engine.

Display on VAS5051

Scheme 224

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

Display on VAS5051

Scheme 225

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 226

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 227

1. Display zone 1
2. Display zone 2
3. Display zone 3
4. Display zone 4

1. Exit function "04 - Basic setting" by pressing --> button.

Engine Control Module (ECM), coding

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 - Engine electronics". Ignition must be switched on.

Display on VAS5051

Scheme 228

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

Display on VAS5051

Scheme 229

1. Enter code word

Vehicles with control module No. 8E0909...

1. Enter 7-digit control module code in zone -2- in accordance with «ENCODING TABLE»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__coding-procedure) .

Scheme 230

EXAMPLE OF ECM ENCODING

Scheme 231

Coding procedure

1. Confirm entry with -Q- button.

Display on VAS5051

Scheme 232

1. Encoding is being performed

1. Wait until next display appears.

Display on VAS5051

Scheme 233

1. Encoding performed in vehicle system
2. Control module identification with new code (previous code in brackets)

1. Exit function "07 - Encoding 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. 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 SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 - Engine electronics". Ignition must be switched on.

or after each required process

1. Start engine.

Display on VAS5051

Scheme 234

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

Display on VAS5051

Scheme 235

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 236

1. Read Measured Value Block
2. Display zone 1 Display zone 2 Display zone 3 Display zone 4
3. Display group X

1. 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

Scheme 237

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 if they are the cause of a customer complaint.

Procedure

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 - Engine electronics". Engine must be running at idling speed.

Display on VAS5051

Scheme 238

1. Under -1- select diagnostic function "10 - Adaptation".

Display on VAS5051

Scheme 239

1. Enter channel number

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

Display on VAS5051

Scheme 240

1. Read out and test channel X
2. Display text of selected channel or No display

1. 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 ( A - CHANGING THE ADAPTATION VALUE USING THE SCROLL BAR ) or by simply entering the new adaptation value ( B - ADAPTATION BY DIRECT ENTRY ).

A - Changing the adaptation value using the scroll bar

Display on VAS5051

Scheme 241

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

Display on VAS5051

Scheme 242

1. Save channel X
2. Display text of selected channel or No display

1. Original value X New value X

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

Scheme 243

Display on VAS5051

1. Channel X Value X stored

1. 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 244

1. Press "Keypad" button -3-.

Display on VAS5051

Scheme 245

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

Display on VAS5051

Scheme 246

1. Save channel X
2. Display text of selected channel or No display

1. original value X new value X

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

Display on VAS5051

Scheme 247

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 (CCS), ACTIVATING / DEACTIVATING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__cruise-control-system-ccs-activatingdeactivating)
2. Activation and deactivation of the hot-country function (coolant run -on pump for hot countries), see «HOT-COUNTRY FUNCTION, ACTIVATING / DEACTIVATING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk__hot-country-function-activating-deactivating)

Cruise Control System (CCS), 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 SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 - Engine electronics". Ignition must be switched on.

Display on VAS5051

Scheme 248

Vehicles with control module No. 8E0909...

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

All models

Display on VAS5051

Scheme 249

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 entry by pressing -Q- button.
2. Exit function "11 - Login, or function 11 - Coding II" by pressing --> button.

Display on VAS5051

Scheme 250

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

Display on VAS5051

Scheme 251

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 252

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 - Exit 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 activated 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 DTC memory entry is made.

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 - Engine electronics". Ignition must be switched on.

Display on VAS5051

Scheme 253

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

Display on VAS5051

Scheme 254

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.

Activating hot-country function

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

Scheme 255

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

Display on VAS5051

Scheme 256

1. Enter display group

1. Enter "132" for "display group number 132" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 257

1. Check indication in display field -4-.

DISPLAY GROUP 132: COOLING

1. Exit function "08 - Read measured value block" by pressing --> button.
2. Press "06 - Exit 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. For checking Diagnostic Trouble Code (DTC) memory, see DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING .

The readinesss 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 disconnected, 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.

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) , and select vehicle system "01 -Engine electronics". Engine must be running at idling speed.

Display on VAS5051

Scheme 258

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

Display on VAS5051

Scheme 259

1. Enter display group

1. Enter "086" for "display group number 086" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 260

1. Check indication in display field -1-.

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 .

Scheme 261

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

1. Generate readiness code. See «READINESS CODE, GENERATING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) .

Requirements

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. Coolant temperature 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 SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) . «OPERATION 9: DIAGNOSIS OF TANK SEAL AND OXYGEN SENSOR INTERCHANGE RECOGNITION BEHIND CATALYTIC CONVERTER»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-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

1. Connect vehicle diagnostic, testing and information system VAS5051. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) and select vehicle system "01 -Engine electronics". Ignition must be switched on.

Display on VAS5051

Scheme 262

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

Display on VAS5051

Scheme 263

1. Contents of DTC memory: Malfunctions recognized or X Malfunctions recognized
2. DTC DTC code DTC location DTC type

If a malfunciton is stored

1. Repair malfunction and erase DTC memory. Perform a road test and check DTC memory again.

If no DTC is stored

1. Press --> button.
2. Perform next operation.

1. Engine stopped, ignition switched on

Display on VAS5051

Scheme 264

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 265

1. No display (before erasing) or DTC memory erased
2. Note: Should the function be carried out? Data will be erased!

1. Press "OK" button in display -2-.
2. Press --> button.
3. Perform next operation.

1. Engine stopped, ignition switched on

Display on VAS5051

Scheme 266

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

Display on VAS5051

Scheme 267

1. Enter display group

1. Enter "060" for "display group number 060" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 268

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: Adaptation of the kick down function

Note. Only on vehicles with automatic transmission.

1. Engine stopped, ignition switched on

Display on VAS5051

Scheme 269

1. Enter display group

1. Enter "063" for "display group number 063" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 270

1. Activate basic setting by pressing -A- button.

Note. Instruction now says: "Operate kick down".

1. 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.

1. Check indication in display field -4-.

DISPLAY GROUP 063: ADAPTATION OF 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 (O2S) 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 271

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 272

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 sooner. The "heated oxygen sensor (HO2S) status" indicates the condition of the oxygen sensor (O2S) control and the heated oxygen sensors (HO2S).

DISPLAY GROUP 030: HEATED OXYGEN SENSOR (HO2S) 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 (O2S) control for heated oxygen sensor (HO2S) 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 heated oxygen sensor (HO2S) aging before catalytic converter

Display on VAS5051

Scheme 273

1. Enter display group

max. input value = 255

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

Display on VAS5051

Scheme 274

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

Test conditions

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

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)

If specified values "B1-S1 OK" and "B2-S1 OK" are obtained

1. Press --> button.

Operation 7: Diagnosis of heated oxygen sensor (HO2S) condition behind catalytic converter

Display on VAS5051

Scheme 275

1. Enter display group

1. Enter "193" for "display group number 193" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 276

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 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 277

1. Enter display group

1. Enter "195" for "display group number 195" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 278

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

DISPLAY GROUP 195: DIAGNOSIS OF TANK VENTILATION VALVE

If specification "Syst. OK" is obtained

1. Press --> button.
2. Perform next operation.

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

1. Accelerator and brake pedals fully pressed simultaneously and held in this position until a test result if displayed.

Display on VAS5051

Scheme 279

1. Enter display group

1. Enter "196" for "display group number 196" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 280

1. Activate basic setting by pressing -A- button.
2. 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 heated oxygen sensor (HO2S) aging behind catalytic converter

Display on VAS5051

1. Enter display group

1. Enter "194" for "display group number 194" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 281

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 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 282

1. Enter display group

1. Enter "198" for "display group number 198" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051

Scheme 283

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

DISPLAY GROUP 198: DIAGNOSIS OF CATALYTIC CONVERTER (BANK 1 AND BANK 2)

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).

1. Perform next operation.

1. Engine running at idling speed

Display on VAS5051

Scheme 284

1. Enter display group

1. Enter "199" for "display group number 199" in zone -2- and confirm entry by pressing -Q- button.
2. Depress accelerator pedal completely (swiftly) two times and then release it (brief acceleration of at least 4000 RPM).

Display on VAS5051

Scheme 285

1. Activate basic setting by pressing -A- button.

Note. During the diagnosis of the secondary air system the secondary air pump runs several seconds.

1. Check indication in display field -4-.

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

If specification "Syst. OK" is obtained

1. Press --> button.
2. Perform next operation.

Operation 13: Read readiness code

1. Read readiness code. See «READINESS CODE, READING»(/audi/a6/c5-2001-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-30l-v6-avk) .

See also:
• DATA EXCHANGE BETWEEN ENGINE CONTROL MODULE AND OTHER CAN-CONTROL MODULES, CHECKING
• ELECTRONIC ENGINE POWER CONTROL (EPC), CHECKING
• CAMSHAFT ADJUSTMENT, CHECKING
• OIL PRESSURE AND OIL PRESSURE SWITCH, CHECKING
• INTAKE AIR TEMPERATURE (IAT) SENSOR -G42-, CHECKING
• COOLANT REGULATOR, 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, CHECKING
• KNOCK CONTROL STOP, CHECKING
• SECONDARY AIR SYSTEM
• SECONDARY AIR INJECTION (AIR) SOLENOID VALVE -N112- CHECKING
• FUEL SUPPLY SYSTEM - ALL ENGINES
• THROTTLE VALVE CONTROL MODULE, ADAPTATION
• ENGINE CONTROL MODULE (ECM), REPLACING
• INTAKE MANIFOLD CHANGE-OVER
• CHECKING HEATED OXYGEN SENSOR (HO2S) LEARNED VALUES AND OXYGEN SENSOR (O2S) CONTROL
• CHECK PHASE POSITION OF CMP SENSOR
• ELECTRIC VACUUM PUMP
• DIAGNOSTIC LEAK TEST, PERFORMING
• ANTI-THEFT IMMOBILIZER
• KICKDOWN FUNCTION, ADAPTATION
• DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING
• DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, ERASING
• EXHAUST MALFUNCTION INDICATOR LAMP (MIL) IN INSTRUMENT CLUSTER
• Safety precautions
• ENGINE CONTROL MODULE (ECM), CODING
• OUTPUT DIAGNOSTIC TEST MODE (DTM)
• BASIC SETTING
• ENDING OUTPUT
• ADAPTATION
• LOGIN PROCEDURE OR CODING II
• DIAGNOSTIC TROUBLE CODE (DTC) TABLE
• READINESS CODE
• CRUISE CONTROL SYSTEM (CCS), ACTIVATING / DEACTIVATING
• HOT-COUNTRY FUNCTION, ACTIVATING / DEACTIVATING
• ENCODING TABLE
• A - CHANGING THE ADAPTATION VALUE USING THE SCROLL BAR
• B - ADAPTATION BY DIRECT ENTRY